The Babolat Racket Station can use the 20mm height riser side, as seen here, and many other machines can probably use that height as well.
Another 1000 Word Picture!
What happens to a string if it gets scuffed or slightly damaged in terms of properties?
We know the string will not go in the clients’ racquet, but how bad is it, really?
The chart below shows exactly what happens to each string until both fail. We can see precisely how the scuffing affects the string. Both strings behave nearly the same through the three (3) cycles to 50 pounds. We then see that the scuffed string gives up a little earlier than the clean string by about 15%.
So, what’s the Difference?
However, the failure force for both of these strings is very high! Only a handful of strings we have tested exhibit this tensile strength.
So we know this string would never be used in a client racquet, but you could certainly use it for some “experimentation!” And, of course, depending on how many and where the “rough” spots are you can cut that portion away!
A Picture is Worth a 1000 Words?
Yesterday @ the World Headquarters was full of interesting stringing! So we decided to do some testing of some of the strings that were just waiting to be broken!
The chosen strings are Ashaway MonoGut ZX Pro 17, Tecnifibre Triax 17, and Volkl V-Star 18—three totally different materials. Our purpose is to determine a string’s properties before it goes into a tennis racquet. Our testing quantifies these properties, and then the “feel” component comes from the player.
A 1000 Words?
We normally do not do more than two (2) overlays because it is a little messy, but these strings begged to be compared, so here it is!
Our Questron can cycle automatically, so the stop points are pretty precise. All strings are cycled from two (2) pounds to fifty (50) pounds and then until they fail or ultimate tensile strength (UTS).
In the Displacement axis (X), the shorter the distance in mm to 50 ponds, the stiffer the string. The straighter the line is to fail, the more consistent the feeling until failure.
The testing confirms that Tecnifibre Triax does contain some stiffer fibers. The other strings are monofilaments, so there are no fibers.
Racquet Quest uses a bunch of each of these strings for obvious reasons and, of course, depending on the player.
Head TK293.1 XL Retro Review
Head TK293.1
This is the selection of “retro” racquets that will be included in our “Retro Review” series.
The following data is based on the XL version disguised as the “Auxetic” model. I imagine Auxetic was just a dream when these racquets were made.
While we are on Head Prestige racquets, I am surprised that more players avoid this series!
Especially now with the new Prestige MPL added to the mix.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head TK293.1 XL |
| Reference Tension | 54 |
| String | |
| Machine Used | True Tension Pro |
| String Pattern | 16x19 |
| String Bed Stiffness - RDC | 52 |
| String Bed Stiffness -FlexFour | 59.1 |
| String Bed Stiffness - SBS | 46 |
| String Bed Stiffness - ERT | 34 |
| Racquet Flex, RDC | 64 |
| Racquet Flex, FlexFour | 46 |
| Racquet - In Plane Stiffness | 434.6 |
| Effective Stiffness | 28.7 |
| Weight, Grams | 335 |
| Weight, Ounces | 11.82 |
| Balance, mm | 328 |
| Balance, Inch | 12.91 |
| Length, Cm | 69.8 |
| Length, Inch | 27.48 |
| COP (inches from end) | 21.7 |
| Head Width | 9.44 |
| Head Length | 12.82 |
| Head Area, cm2 | 613.1 |
| Head Area, Sq. Inch | 95.0 |
| Beam Height @ Grip, mm | 22.5 |
| Beam Height @ Mid, mm | 20.4 |
| Beam Height @ Tip | 20.3 |
| Beam Width @ Grip, mm | 10.6 |
| Beam Width @ Throat, mm | 10.3 |
| Beam Width @ Mid, mm | 11.4 |
| Beam Width @ Tip, mm | 11.3 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .620 |
| Main String Grid Inch/mm | 7.25/184.1 |
| Cross String Grid Inch/mm | 9.06/230.1 |
| Density (% of head filled with string) | .687 |
| Average Cross String Space | .477 |
| Average Main String Space | .451 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.2 |
| First Moment, Nm | .848 |
| Polar Moment | 358 |
| Torsional Stability | 13 |
| Swing Weight, Kg/cm2 | 345 |
| Swing Weight, Ounces | 12.17 |
| Swing Weight Calculated | 360.4 |
| Power, RDC | 54 |
| Control, RDC | 47 |
| Manueverability, RDC | 58 |
| Power, Calculated | 2182.2 |
| Head Points | 6.61 |
| Head Weight, % | 47.0% |
| Dwell Time, ms | 6.49 ms |
| K, Lb/In | 166.7 |
| Recoil Weight | 173.29 |
| Twist Weight | 224.33 |
| End Weight | 132.2 |
| Tip Weight | 202.3 |
| 9 O'Clock | 95.6 |
| 3 O'Clock | 94.8 |
| Butt Cap | 145.2 |
| COF, Main | .484 |
| COF, Cross | .332 |
Head TGK238.1 Retro Review
Well, it is not often we do a review on racquets not made in this century, however, it is not often we get brand-new ones to work on! Remember that the graphics pack, sometimes called “paint job” may not reflect the actual racquet.
Our good friend and client Christian sent us these incredible racquets we will review in the coming days.
Head TGK238.1
Most of the racquets we will review from Christian would be referred to as “Pro Stock”.
By having this data we can probably set up a current racquet to feel very close to the “Pro Stock” units.
There is a lot that goes on under the “paint job” that very few know in detail, such as fiber layup, resin system, material percentages, and more.
So let’s enjoy what we can determine from these racquets.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head TGK238.1 |
| Reference Tension | 56 |
| String | Luxilon/Hawk |
| Machine Used | True Tension Pro |
| String Pattern | 18x20 |
| String Bed Stiffness - RDC | 52 |
| String Bed Stiffness -FlexFour | 60.2 |
| String Bed Stiffness - SBS | 50 |
| String Bed Stiffness - ERT | 38 Kg/Cm |
| Racquet Flex, RDC | 64 |
| Racquet Flex, FlexFour | 50 |
| Racquet - In Plane Stiffness | 417.9 |
| Effective Stiffness | 28.7 |
| Weight, Grams | 339.1 |
| Weight, Ounces | 11.96 |
| Balance, mm | 325 |
| Balance, Inch | 12.80 |
| Length, Cm | 68.6 |
| Length, Inch | 27.00 |
| COP (inches from end) | 20.9 |
| Head Width | 9.44 |
| Head Length | 12.87 |
| Head Area, cm2 | 615.7 |
| Head Area, Sq. Inch | 95.4 |
| Beam Height @ Grip, mm | 22.0 |
| Beam Height @ Mid, mm | 20.4 |
| Beam Height @ Tip | 20.3 |
| Beam Width @ Grip, mm | 10.3 |
| Beam Width @ Throat, mm | 10.8 |
| Beam Width @ Mid, mm | 11.0 |
| Beam Width @ Tip, mm | 11.2 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio | .629 |
| Main String Grid Inch/mm | 7.25/184.1 |
| Cross String Grid Inch/mm | 9.80/248.9 |
| Density (% of head filled with string) | .745 |
| Average Cross String Space | .490 |
| Average Main String Space | .403 |
| Dynamic Tension, Kp, ERT | 38 |
| Dynamic Tension, Lbs/in | 212.5 |
| First Moment, Nm | .851 |
| Polar Moment | 346 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 330 |
| Swing Weight, Ounces | 11.64 |
| Swing Weight Calculated | 359.1 |
| Power, RDC | 47 |
| Control, RDC | 53 |
| Manueverability, RDC | 67 |
| Power, Calculated | 2035.6 |
| Head Points | 5,67 |
| Head Weight, % | 47.4% |
| Dwell Time, ms | 6.49 ms |
| K, Lb/In | 166.7 |
| Recoil Weight | 160.3 |
| Twist Weight | 227.6 |
| End Weight | 136.9 |
| Tip Weight | 201.8 |
| 9 O'Clock | 96.3 |
| 3 O'Clock | 95.4 |
| Butt Cap | 147.6 |
| COF, Main | .342 |
| COF, Cross | .317 |
Pre-Stretching String…Why and How?
Every string we put into a tennis racquet is “pre-stretched”…not just sometimes but every time! This is an old post but worth seeing again I believe.
Why?
Pre-Stretching slows down the “creep” process that reduces string bed stiffness, (tension loss) and to feel what the string is doing while being stretched, and making some strings easier to handle during the stringing process. Some strings stretch a lot and some strings don’t. We can tell a lot about how the string should be handled (and the application) based on pre-stretching.
How?
Most stringing machines have a pre-stretch feature, including ours, however, we prefer the entire length method. All forty (40) feet of it! If you have a room, that is forty feet long, or a perfect outdoor spot use it!
The proper tools and proper technique make pre-stretching an easy and performance-enhancing procedure.
Parallel Plier
The object is to pull the string straight. The plier needs to grab the string as shown.
The arm and wrist should be in the neutral position as shown so the stress is on the string, not your body.
The other end of the string can be secured through a hole with a “starting clamp” as you will see below. These clamps are rated to hold 90 pounds so it is not in danger of letting loose!
Trust me, a 40-foot string hitting you in the face is painful!
Tree Hole
We probably hold the string at tension for 30 to 40 seconds after applying four or five quick short stretches.
For many years we used a high-tech device to measure how much force we apply during the stretching procedure. The force we apply is between 35 and 40 pounds using this rig…
This scale is rated to 100 pounds. The string is inserted through a hole in the bracket and secured by a starting clamp, then using two hands grab the handle and begin to stretch the string while reading the force on the scale. After using this device for a while it will become a matter of “feeling” not measuring the force.
Stretch Scale
The Long & The Short of it!
One of our most requested racquet modifications is for extending the racquet or if it is a full custom racquet cutting off an uncut racquet!
This post is going to present the Wilson Blade 98 v9 in the standard length and the extended length. This is not a direct comparison because one is 16×19 and one is 18×20. The focus here is on the effect of the extension on dynamic properties.
A knowledgeable racquet technician, and current extended racquet user, will know that an extended retail racquet will not necessarily be the same as a “manufactured” racquet. This is likely due to the different weight placement and amount used by the manufacturer.
Briefly, then, an extended racquet will likely be a more powerful racquet… but let’s take a look at two (2) of the properties that contribute to power:
Now look at the “Power, Calculated” data to see how the other two (2) properties contribute.
First the retail extended racquet
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Blade 98 v9 18x20 Extended |
| Reference Tension | 46 |
| String | Volkl V-Star 18 |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 48 |
| String Bed Stiffness -FlexFour | 59.5 |
| String Bed Stiffness - SBS | 45.4 |
| String Bed Stiffness - ERT | 33 Kg/Cm |
| Racquet Flex, RDC | 62 |
| Racquet Flex, FlexFour | 45.1 |
| Racquet - In Plane Stiffness | 397.4 |
| Weight, Grams | 353 |
| Weight, Ounces | 12.45 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 69.9 |
| Length, Inch | 27.520 |
| Head Width | 9.61 |
| Head Length | 12.85 |
| Head Area, cm2 | 625.5 |
| Head Area, Sq. Inch | 96.9 |
| Beam Height @ Grip, mm | 23.0 |
| Beam Height @ Mid, mm | 21.0 |
| Beam Height @ Tip | 21.0 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.0 |
| Beam Width @ Mid, mm | 12.0 |
| Beam Width @ Tip, mm | 13.0 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio | .673 |
| Main String Grid Inch/mm | 7.75/196.8 |
| Cross String Grid Inch/mm | 10.00/254.4 |
| Density (% of head filled with string) | .799% |
| Average Cross String Space | .500 |
| Average Main String Space | .431 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .890 |
| Polar Moment | 376 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 358 |
| Swing Weight, Ounces | 12.63 |
| Swing Weight Calculated | 377.5 |
| Power, RDC | 59 |
| Control, RDC | 38 |
| Manueverability, RDC | 48 |
| Power, Calculated | 2259.4 |
| Head Points | 7.09 |
| Head Weight, % | 46.8% |
| Center of Percussion | 21.5 |
| Dwell Time, ms | 6.76ms |
| Efective Stiffness - lbs | 27.1 |
| K, Lb/In | 153.85 |
| Recoil Weight | 178.66 |
| Twist Weight | 244.25 |
| End Weight | 141.2 |
| Tip Weight | 210.4 |
| 9 O'Clock | 99.7 |
| 3 O'Clock | 97.2 |
| Butt Cap | 155.0 |
| COF, Main | .332 |
| COF, Cross | .296 |
Now the retail standard racquet
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Blade 98 v9 16x19 Standard |
| Reference Tension | 56 |
| String | PEEK 7710 |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 50 |
| String Bed Stiffness -FlexFour | 58.2 |
| String Bed Stiffness - SBS | 39.5 |
| String Bed Stiffness - ERT | 33 Kg/Cm |
| Racquet Flex, RDC | 62 |
| Racquet Flex, FlexFour | 39.5 |
| Racquet - In Plane Stiffness | 425.5 |
| Weight, Grams | 328 |
| Weight, Ounces | 11.57 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 68.6 |
| Length, Inch | 27.00 |
| Head Width | 9.62 |
| Head Length | 12.87 |
| Head Area, cm2 | 627.0 |
| Head Area, Sq. Inch | 97.2 |
| Beam Height @ Grip, mm | 23.0 |
| Beam Height @ Mid, mm | 21.0 |
| Beam Height @ Tip | 21.0 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.0 |
| Beam Width @ Mid, mm | 10.3 |
| Beam Width @ Tip, mm | 12 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .629 |
| Main String Grid Inch/mm | 7.25/184.1 |
| Cross String Grid Inch/mm | 9.44/239.7 |
| Density (% of head filled with string) | .704 |
| Average Cross String Space | .497 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .827 |
| Polar Moment | 334 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 318 |
| Swing Weight, Ounces | 11.25 |
| Swing Weight Calculated | 350.7 |
| Power, RDC | 49 |
| Control, RDC | 53 |
| Manueverability, RDC | 74 |
| Power, Calculated | 1941.4 |
| Head Points | 5.05 |
| Head Weight, % | 47.7% |
| Center of Percussion | 20.8 |
| Dwell Time, ms | 6.62ms |
| Efective Stiffness - lbs | 27.2 |
| K, Lb/In | 160.25 |
| Recoil Weight | 152.36 |
| Twist Weight | 227.34 |
| End Weight | 131.9 |
| Tip Weight | 196.9 |
| 9 O'Clock | 92.4 |
| 3 O'Clock | 92.1 |
| Butt Cap | 144.0 |
| COF, Main | .388 |
| COF, Cross | .354 |
Monofilament Material Comparison
Most monofilament tennis strings are polyester, a blend of polyester, or PEEK.
As you know, we believe there is no wrong string, just wrong applications. The graph will show the comparative stiffness of three (3) materials. The string is pulled at a rate of 1mm per second. The resultant spreadsheet for this particular test is about 5300 rows long.
With our spreadsheet, we have access to every mm of data. Maybe sometime we can post some of the individual data points.
Blast is polyester, V-Star is a unique blend of material (I do not know what it is), and MonogutZX is PEEK (polyetheretherketone).
The graph shows the cycle from 0 to 50 pounds three (3) times, then to failure (UTS). The quicker (shorter distance) the string reaches the 50-pound mark, the stiffer it is. MonoGut ZX did not fail in the 180mm excursion. You can see, in this case, the stiffer string fails at a higher force but shorter excursion.
Stiffer strings deliver less power and have a higher shock value. The midrange stiffness shows exactly what would be expected, and the softest string also indicates expected results.
Let’s get up to Speed!
The new Head Speed 2024 series is here! This series comprises the Pro, the MP, the MPL, and the Team.
The 2024 Speed series retains the white and black graphics pack, however, the finish “feels” different. Don’t worry! It is not the finish that falls off or turns to sticky stuff!
We will start with the MP, for no reason, except it is the one I picked up!
Head Speed 2024 Series
From our perspective, the Speed series is the most popular of all the Head series but not by a huge margin!
We believe this is a factor of proper stiffness and powerful head geometry.
As you read the numerical reviews this will become clear.
The first clue that this is going to be a powerhouse is the swing weight of 343! This property reminds me of many years ago when car dealers would use their most powerful cars for demonstration purposes! Very impressive!
Sort of the same principle applies here being that heavier racquets will perform much better than light racquets, however, 343 is a little more than we would recommend for most players. We will update this property as we setup more Speed MP 2024’s!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Speed MP 2024 |
| Reference Tension | 53 |
| String | 7710 1.32 Natural |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 49 |
| String Bed Stiffness -FlexFour | 56.0 |
| String Bed Stiffness - SBS | 40 |
| String Bed Stiffness - ERT | 33 Kg/Cm |
| Racquet Flex, RDC | 63 |
| Racquet Flex, FlexFour | 40 |
| Racquet - In Plane Stiffness | 416.7 |
| Weight, Grams | 333 |
| Weight, Ounces | 11.75 |
| Balance, mm | 336 |
| Balance, Inch | 13.19 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.65 |
| Head Length | 13.04 |
| Head Area, cm2 | 637.8 |
| Head Area, Sq. Inch | 98.9 |
| Beam Height @ Grip, mm | 21.3 |
| Beam Height @ Mid, mm | 23.3 |
| Beam Height @ Tip | 23.5 |
| Beam Width @ Grip, mm | 13.4 |
| Beam Width @ Throat, mm | 10.4 |
| Beam Width @ Mid, mm | 11.4 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .623 |
| Main String Grid Inch/mm | 7.51 / 191 |
| Cross String Grid Inch/mm | 10.62 / 269 |
| Density (% of head filled with string) | 81.1% |
| Average Cross String Space | .562 |
| Average Main String Space | .469 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .865 |
| Polar Moment | 359 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 343 |
| Swing Weight, Ounces | 12.10 |
| Swing Weight Calculated | 373.7 |
| Power, RDC | 60 |
| Control, RDC | 37 |
| Manueverability, RDC | 58 |
| Power, Calculated | 2136.1 |
| Head Points | 2.36 |
| Head Weight, % | 48.9% |
| Center of Percussion | 21.2 |
| Dwell Time, ms | 6.69 |
| Efective Stiffness - lbs | 27.6 |
| K, Lb/In | 157.05 |
| Recoil Weight | 161.6 |
| Twist Weight | 232.4 |
| End Weight | 129.4 |
| Tip Weight | 204.9 |
| 9 O'Clock | 105.0 |
| 3 O'Clock | 103.3 |
| Butt Cap | 123.7 |
| COF, Main | .370 |
| COF, Cross | .306 |
Very Special Racquets!
-
- Head Prestige Pro 2024 16×19 Full Custom
-
- Head Auxetic Speed Full Custom
-
- Head Boom Pro Full Custom
-
- Head Extreme MP Full Custom
Are you looking for something unique or extraordinary?
If you are in the “extraordinary” category, we have some racquets that are just that!
These racquets are full custom racquets that need to be built to your specifications; therefore, they transcend the current or future cosmetics of racquets of the model!
Each racquet can be configured to a 27.8-inch length, with grip sizes from 1 to 5, with either leather or synthetic grips.
Of course, swing weight is the primary performance metric, which is entirely up to you (our recommendations notwithstanding). Overall weight is again your decision! These are completely custom.
Of particular interest is the Head Prestige Pro 2023 16×19 string pattern! The retail version of this model uses a “dense” 18×20 string pattern so we decided to have some with the more “open” pattern which will appeal to more players. The pictures do not so justice to the incredible look of this racquet!
Whichever one you choose, these racquets represent the “ultimate very special” tennis racquet!
Please go here to read more about Full Custom Racquet!
Full Custom (Pro Stock) Tennis Racquet (FCPS)
Realize Your Tennis Potential: The Magnificent Full Custom (Pro Stock) Tennis Racquet!
The Full Custom (Pro Stock) Tennis Racquet offered by Racquet Quest, LLC, is not only about customization, but also about utilizing cutting-edge technology. The racquet’s frame is designed to provide excellent stability (control + power) and vibration damping, ensuring a comfortable and controlled feel with each swing. The deign and cosmetics will be a variation of the retail model.
Serve Up a Winning Game: Discover the Benefits of the Full Custom (Pro Stock) Tennis Racquet!
To truly unleash the full potential of the Racquet Quest Full Custom (Pro Stock) Tennis Racquet, it is essential to work closely with a professional racquet technician. We will help analyze your playing style and recommend the ideal customization options for you. By fine-tuning the racquet to your unique needs, you can exploit its full capabilities and elevate your game. With the Full Custom (Pro Stock) Tennis Racquet in your hands, victory will become your regular companion on the tennis court.
The Racquet Quest Full Custom (Pro Stock) Tennis Racquet is a remarkable piece of equipment that has the power to transform your tennis game. With its unparalleled level of customization, this racquet allows you to unleash your tennis potential!
Take a look this post showing the full custom racquet models we have remaining!
Head Prestige Tour 2023
This racquet, the Head Prestige Tour 2023, is the epitome of performance racquets!
The first clue is the 95-inch head size. Then comes the thin beam and slightly stiffer flex! Plus, you know it is a Prestige because of the full cap grommet system! This system is one of the greatest features of all time on any racquet!
You will see all of the specifications in the table that follows. Now, we can talk about the visuals. As with the entire Prestige 2023 series, there is a combination of matt and shiny finishes, and the shiny “purple” is great and does not seem out of place on this racquet.
The beam geometry is slightly different than the Head Prestige Pro to add a little stiffness to the shaft.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Prestige Tour 2023 16x19 Retail |
| Reference Tension | 54 |
| String | 7710 Spool 5 |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 50 |
| String Bed Stiffness -FlexFour | 63.3 |
| String Bed Stiffness - SBS | 44 |
| String Bed Stiffness - ERT | 35 Kg/Cm |
| Racquet Flex, RDC | 64 |
| Racquet Flex, FlexFour | 31 |
| Racquet - In Plane Stiffness | 376.3 |
| Weight, Grams | 335 |
| Weight, Ounces | 11.82 |
| Balance, mm | 329.0 |
| Balance, Inch | 12.95 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.360 |
| Head Length | 12.77 |
| Head Area, cm2 | 608.87 |
| Head Area, Sq. Inch | 94.4 |
| Beam Height @ Grip, mm | 21 |
| Beam Height @ Mid, mm | 22 |
| Beam Height @ Tip | 22 |
| Beam Width @ Grip, mm | 13.1 |
| Beam Width @ Throat, mm | 13 |
| Beam Width @ Mid, mm | 12 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .619 |
| Main String Grid | 7.20 |
| Cross String Grid | 9.06 |
| Density (% of head filled with string) | 72.6% |
| Average Cross String Space | .493 |
| Average Main String Space | .457 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .851 |
| Polar Moment | 346 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 330 |
| Swing Weight, Ounces | 11.64 |
| Swing Weight Calculated | 362.6 |
| Power, RDC | 54 |
| Control, RDC | 47 |
| Manueverability, RDC | 67 |
| Power, Calculated | 2012.8 |
| Head Points | 4.412 |
| Head Weight, % | 48.0% |
| Center of Percussion | 20.9 |
| Dwell Time, ms | 6.62 |
| Efective Stiffness - lbs | 28.1 |
| K, Lb/In | 160.26 |
| Recoil Weight | 165.7 |
| Twist Weight | 222.53 |
| End Weight | 132.0 |
| Tip Weight | 202.0 |
| 9 O'Clock | 101.5 |
| 3 O'Clock | 102.4 |
| Butt Cap | 129.5 |
| .376 | .383 |
| COF, Cross | .306 |
Wilson H-22
We have a few Wilson H-22 at the World Headquarters!
These are custom racquets, so any resemblance to retail racquets is cosmetic! These racquets are cut to a length of 27 inches (68.6mm) and have no grip, and the butt cap is not stapled to the pallet! This means it is ready for a Wilson Leather grip (or standard synthetic) and some minor length adjustment if necessary.
Wilson H-22
There is a well-deserved mysticism around this iconic racquet model! This racquet has been in the hands of many top professionals over the years and probably many right now! The relatively thin beam and box cross-section create a predictable and consistent racquet.
These racquets are customizable to achieve the perfect hitting experience for the player seeking a “companion” not just a racquet!
Lets compare the Head Prestige Pro 16×19 v Head Prestige Pro 18×20
The following graphic will show clearly why the pro stock (SMU) racquets are very important in our quest to enhance the performance of all players!
A primary reason we work with custom racquets is the length of the racquet as we receive it, which allows us to create up to 28 inches (71cm) long. We can extend racquets however reducing the length is the preferred option.
Of course, we can customize the SMU to match the specifications of the retail (27-inch) racquet but with a 16×19 string pattern.
If you look closely you will recognize the tremendous possibilities beginning with a lighter, more flexible racquet for players of all physical abilities!
The supply of the 16×19 racquets is limited, however, demos are available for both.
Head Prestige Pro 18×20 2023 Retail
This Head Prestige Pro 18×23 Retail version offers a high performance racquet ready for serious play! However, we offer the custom version for players who prefer a slightly more open string pattern and some customization.
As you will see on the specifications, this racquet is serious, but most players can use this racquet if they get over the idea that these are stiff racquets!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Prestige Pro 2023 18x20 Retail |
| Reference Tension | 52 |
| String | MonoGut ZX Pro (PEEK) |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 54 |
| String Bed Stiffness -FlexFour | 56.4 |
| String Bed Stiffness - SBS | 44 |
| String Bed Stiffness - ERT | 35 Kg/Cm |
| Racquet Flex, RDC | 58 |
| Racquet Flex, FlexFour | 44 |
| Racquet - In Plane Stiffness | 342.9 |
| Weight, Grams | 340 |
| Weight, Ounces | 11.99 |
| Balance, mm | 3234 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.476 |
| Head Length | 13.052 |
| Head Area, cm2 | 626.7 |
| Head Area, Sq. Inch | 97.1 |
| Beam Height @ Grip, mm | 20.8 |
| Beam Height @ Mid, mm | 20.0 |
| Beam Height @ Tip | 20.0 |
| Beam Width @ Grip, mm | 10.7 |
| Beam Width @ Throat, mm | 10.8 |
| Beam Width @ Mid, mm | 11.5 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio | .655 |
| Main String Grid | 7.56 |
| Cross String Grid | 10.25 |
| Density (% of head filled with string) | 71.4% |
| Average Cross String Space | .513 |
| Average Main String Space | ,453 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .844 |
| Polar Moment | 335 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 319 |
| Swing Weight, Ounces | 11.25 |
| Swing Weight Calculated | 354.7 |
| Power, RDC | 44 |
| Control, RDC | 57 |
| Manueverability, RDC | 74 |
| Power, Calculated | 1811.3 |
| Head Points | 6.3 |
| Head Weight, % | 47.1% |
| Center of Percussion | 20.5 |
| Dwell Time, ms | 6.125 |
| Efective Stiffness - lbs | 28.0 |
| K, Lb/In | 173.08 |
| Recoil Weight | 152.3 |
| Twist Weight | 229.34 |
| End Weight | 139.8 |
| Tip Weight | 198.9 |
| 9 O'Clock | 100 |
| 3 O'Clock | 101.7 |
| Butt Cap | 137.4 |
| COF, Main | .383 |
| COF, Cross | .204 |
Head Prestige Pro 2023 16×19 SMU
I told you something special is coming soon! Soon is here now! And it is special!
Head Prestige Pro 16×19 2023 SMU
We have a limited number of Head Prestige Pro 2023 with a custom 16×19 string pattern instead of the standard 18×20 (we have those as well). These are full custom racquets, meaning they need some customization, and are usually referred to as “Pro Stock” racquets.
These racquets have a different finish than the retail version, primarily shiny instead of a matt finish anywhere.
We receive these in “raw” form, meaning they are not cut or have any post-manufacturing additives, i.e., swing weight and overall weight.
This means we can make a “full custom” version of the retail model up to 27.8 inches long (70.6 mm) except with a more open 16×19 string pattern!
However, to get things started, we will post the specifications of each racquet “as is.”
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Prestige Pro 2023 16x20 SMU |
| Reference Tension | 52 |
| String | MonoGut ZX Pro (PEEK) |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 49.0 Units |
| String Bed Stiffness -FlexFour | 59.5 pounds |
| String Bed Stiffness - SBS | 43.0 pounds |
| String Bed Stiffness - ERT | 35 Kg/Cm |
| Racquet Flex, RDC | 57 - After stringing |
| Racquet Flex, FlexFour | 43.0 |
| Racquet - In Plane Stiffness | 346.1 lbs/Inch |
| Weight, Grams | 296 |
| Weight, Ounces | 10.44 |
| Balance, mm | 331 |
| Balance, Inch | 13.03 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.476 |
| Head Length | 13.052 |
| Head Area, cm2 | 626.7 |
| Head Area, Sq. Inch | 97.1 |
| Beam Height @ Grip, mm | 20.0 |
| Beam Height @ Mid, mm | 20.0 |
| Beam Height @ Tip | 20.0 |
| Beam Width @ Grip, mm | 10.7 |
| Beam Width @ Throat, mm | 10.8 |
| Beam Width @ Mid, mm | 11.5 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .611 |
| Main String Grid | 7.25 |
| Cross String Grid | 10.0 |
| Density (% of head filled with string) | 74.6% |
| Average Cross String Space | .526 |
| Average Main String Space | ,453 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .758 |
| Polar Moment | 299.0 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 285.0 |
| Swing Weight, Ounces | 10.05 |
| Swing Weight Calculated | 324.3 |
| Power, RDC | 37 |
| Control, RDC | 64 |
| Manueverability, RDC | 97 |
| Power, Calculated | 1593.8 |
| Head Points | 3.78 |
| Head Weight, % | 48,3% |
| Center of Percussion | 20.3 |
| Dwell Time, ms | 6.048 |
| Efective Stiffness - lbs | 26.3 |
| K, Lb/In | 157.05 |
| Recoil Weight | 129.23 |
| Twist Weight | 199.70 |
| End Weight | 117.0 |
| Tip Weight | 179.2 |
| 9 O'Clock | 89.5 |
| 3 O'Clock | 90.0 |
| Butt Cap | 116.6 |
| COF, Main | .412 |
| COF, Cross | .331 |
Now for some GOOD news!
It seems that I am recovering from this cold or whatever it is, so now we can return to a relatively normal schedule!
Happy!
Am I very happy? Yes!
I want to start with some comments from Willie B. regarding string. After you read Willie’s comments, we can talk about the string and why it does what it does: to allow players of any level to play without discomfort.
Here is from Willie:
“FYI, my inability to play tennis more than 1-twice a week due to the pain for over 4 years impacted my game. The last time I was ranked was 5.0, but now at 47, probably more like 4.5 (No tournament for the previous 5 years)
The good news is that with the feel of those strings, I can hit back (I practiced with a top player last Sunday, and he even felt it as I am not scared to go big… I have played with him for over a decade)”.
Willie’s racquet technician is Henry Hamels of String MD. Thank you, Henry, for sharing!
If you have not already guessed, the string material is PEEK, polyetheretherketone, which was marketed as Zyex by Ashaway under the MonoGut ZX and ZX Pro models! This monofilament format offers an alternative to stiffer monofilament strings while providing, in most cases, better performance and durability!
- The raw material is expensive.
- Some
racquet techniciansstringers simply don’t know how to handle PEEK.- The high elongation of PEEK is a surprise to the first-time stringer.
- Marketing hype is not strong.
- Very few players and stringers know about this alternative.
- See Marketing Hype above!
- Stringers may have had a poor experience before and are wary.
- The material does not change shape; therefore, knots are not as tiny as some stringers prefer.
- PEEK will “tighten” its own knots.
- Beginning stringers may over-tighten the knot, causing failure…never to be used again!
- Currently, the material is available in two (2) colors, tan and black.
- MonoGut ZX is 16 gauge
- MonoGut ZX Pro is 17 gauge
Depending on the player’s tennis intentions, we may start them on PEEK at age nine (9) but no later than twelve (12).
Thank you, Willie, for your comments!
To see if this material will benefit your game now and for the long term, ask your racquet technician.
- Please text us if you need additional information: 407.491.4755
- Comment on this site, and we will respond to specific questions.
- If, based on our player history, your application may not be the best, we will tell you.
- Very beginning players and those players experimenting with various strokes creating mis-hits need to be recognized.
Visitors to the World Headquarters
Racquet Quest, LLC World Headquarters was a very busy place recently! It is always busy doing racquet work but this “busyness” was to share some time with visitors from around the world!
Albert Murata, from Hawaii, and his wife Heather were in town to play the 55’s at the USTA Campus, happily, they took the time to come by and chat about stinging stuff. You can reach Albert here.
AM Stringing
Also here was Randy St Pierre from the UK. Randy stops by about twice a year and we always have vibrant discussions.
Coming from Lyon, France was Eric Ferrazzi, Carine, and Camille! This is our French Family and it is always wonderful to have them here with us!
Eric Ferrazzi, Lyon, France
Since all of us are in the tennis business we have a lot to talk about.
It seems our discussions normally start with strings! Imagine that! Why do we talk about string, because it breaks and we replace it. Why does it break? There are several reasons but for right now we are focused on the grommet set in the racquet. Some grommets around the top of the racquet have very shallow grooves and the string can be exposed to court and fail. Not after one altercation with the court but over time for sure!
Racquet Characteristics are always popular to discuss with stiffness being one of the top subjects. You can see some racquet stiffnesses here.
Nothing is off limits so we always have a good time.
Welcome!
We welcome you to stop by, wherever you are from!
Head Prestige 2023
The Head Prestige 2023 series is here!
| Model | Head Size | String Pattern | Unstrung Weight | Unstrung Swing Weight | RDC Stiffness |
|---|---|---|---|---|---|
| Head Prestige Pro 2023 | 98 | 18x20 | 318 | 284 | 61 |
| Head Prestige Tour 2023 | 95 | 16x19 | 313 | 295 | 66 |
| Head Prestige MP L 2023 | 99 | 16x19 | 303 | 285 | 64 |
There is much to be said about these new Prestige 2023 models and the first thing that needs to be clear is that these are not “stiff” racquets. Of course, a Prestige Mid 93 strung with poly at 55 pounds will be ultra stiff on impact! I think that is not the fault of the racquet!
You can approximate the strung weight by adding 17-20 grams to the weight and adding about 30 units to the swing weight.
Racquet stiffness can be mitigated by adjusting the Effective stiffness for the player.
| Racquet Model | Head Size | RDC Stiffness |
|---|---|---|
| Yonex V-Core 98 | 98 | 66 |
| Yonex Percept 100 | 100 | 68 |
| Wilson Shift 99L | 99 | 71 |
| Wilson Pro Staff 97 v14 | 97 | 68 |
| Wilson Pro Staff 97L | 97 | 70 |
| Wilson H22 | 97 | 65 |
| Head Boom Pro | 98 | 69 |
| Head Extreme MP | 100 | 70 |
| Babolat Pure Drive | 100 | 71 |
| Babolat Pure Aero | 100 | 67 |
Wilson Shift 99L Yes it is HERE!
This could be the Shift you are waiting for!
The Wilson Shift 99 L
The same new technology in a slightly lighter package!
We will post all the specifications soon but we wanted to let you know they are here!
I believe this will be a great platform for future growth! The swing weight is a little low. However, that can be changed as necessary to achieve the growth in performance. The stiffness of this racquet does lend to the power shown in the specifications, but the lateral bending will benefit those looking for comfort.
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Shift 99L |
| Reference Tension | 55 |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 52.0 |
| String Bed Stiffness -FlexFour | 60.0 |
| String Bed Stiffness - SBS | 46.0 |
| String Bed Stiffness - ERT | 36 kg/cm |
| Racquet Flex, RDC | 68 After Stringing |
| Racquet Flex, FlexFour | 46.0 |
| Racquet - In Plane Stiffness | 403.2 Lbs/In |
| Weight, Grams | 312 |
| Weight, Ounces | 11.01 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.82 |
| Head Length | 12.74 |
| Head Area, cm2 | 633.6 |
| Head Area, Sq. Inch | 98.2 |
| Beam Height @ Grip, mm | 23.0 |
| Beam Height @ Mid, mm | 24.0 |
| Beam Height @ Tip | 24.0 |
| Beam Width @ Grip, mm | 12.3 |
| Beam Width @ Throat, mm | 13.3 |
| Beam Width @ Mid, mm | 11.0 |
| Beam Width @ Tip, mm | 13.0(including bumper) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .617 |
| Main String Grid | 7.25 |
| Cross String Grid | 10.87 |
| Density (% of head filled with string) | 71.6% |
| Average Cross String Space | .494 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT MasterTensometer | 36 kg/cm |
| Dynamic Tension, Lbs/in | 201.35 |
| First Moment, Nm | .774 |
| Polar Moment | 311 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 297 |
| Swing Weight, Ounces | 10.48 |
| Swing Weight Calculated | 325.5 (full-length) |
| Power, RDC | 51.0 |
| Control, RDC | 50.0 |
| Manueverability, RDC | 74.0 |
| Power, Calculated | 2003.2 |
| Head Points | 6.30 |
| Head Weight, % | 47.1% |
| Center of Percussion | 20.7 |
| Dwell Time, ms | 6.03 |
| Dwell Time, Spin, ms | 8.82 |
| Effective Stiffness | 29.5 |
| K, Lb/In | 166.67 |
| Recoil Weight | 144.06 |
| Twist Weight | 224.76 |
| End Weight | 128.1 |
| Tip Weight | 182.9 |
| 9 O'Clock | 94.7 |
| 3 O'Clock | 94.3 |
| Butt Cap | 123.5 |
| COF, Main | .315 |
| COF, Cross | .346 |
Wilson SHIFT 99 PRO – Jason’s Racquet Review
HIGHLIGHTS:
Fun racquet to try! Very different in both looks and feel, from the usual Wilson offerings. More suited to the advanced player, and aggressive baseliners who play with fast swing speeds, and a lot of spin.
FIRST IMPRESSIONS:
The most noticeable impression, on first pick up, of the PRO version, was the slightly thicker beam, and overall heft of the racquet. At 327g swing weight, this racquet is definitely in the heavyweight category, but it had a good feel in the hand, and generally good maneuverability, both at the baseline and at the net. As for looks, the contemporary aesthetics are very different from the usual Wilson look, and the string bed looks noticeably tighter than I’m used to.
CONTROL:
The sweet spot on this racquet feels small, suiting it to a more advanced player. Faster swing speeds seemed to produce more control, but with the smaller sweet spot, and low dwell time, I experienced some balls flying when I didn’t expect them to. The tight string bed does produce a lower trajectory, but I didn’t find that this prevented those occasional wayward balls. At the net, the racquet had a damper feel than I’m used to, and again, I felt I was in control as long as I hit the sweet spot.
SPIN:
I was looking forward to testing this racquet because of the new increased horizontal bending in the head of the racquet, which should generate more spin. Hitting my regular strokes, I didn’t notice any extra spin being produced naturally. However, when I really tried to increase the swing speed, and increase the spin myself, the racquet responded well and would allow for great spin creation.
POWER:
The thick beam gave the racquet a very solid and stable feel, and with the weight of the racquet, it was very powerful coming off the sweet spot. Great on days you’re playing well, but if you miss the sweet spot the racquet had a dull, non-responsive feel. Solid on returns and good momentum, but the flatter hitter may struggle for control.
OVERALL:
This is a very different racquet that takes a while to get used to. It would be well suited to an advanced player, who swings fast, and already plays with a lot of spin. Don’t expect this racquet to transform flat strokes into heavy topspin. I tested at 55 lbs but would string a little tighter than this if using it again.
I did also test the non-pro version of the Shift. With the more open string bed and lighter weight, I experienced even more balls flying long than with the pro version. It was definitely more forgiving on the arm, and easier to maneuver, but the trade-off was less control. Would be well suited to a more intermediate player. I feel an advanced player would have to add some extra weight, and string tighter.
Are you ready for a peek at the NOIR SIDE?
Are you ready for the Dark Side?
Do you dare? Of course you do!
Of course you’re ready! You have been hitting with the Wilson Blade for a while but always wanted a Noir racquet!
But why?
These Noir Series racquets represent the pinnacle of style!
When combined with the performance of the Blade and Pro Staff models the Noir aesthetic projects your determination to anyone standing in your way of success on the court!
These racquets are duplicates of the current “rust” Pro Staff and the “green” Blade so you are assured of the performance and feel of the Blade or Pro Staff you are currently using which means all you need to do is buy one…then visit the Dark Side. We have a few remaining!
Compare Wilson Shift 99/300 to Shift 99/315
Comparisons are fun and can be informative as one of the steps in selecting a tennis racquet that is right for you!
If you have read the individual reviews of these two (2) racquets you may wonder about some of the numbers.
This comparison table makes it easy to see the properties.
- You will notice very little difference in these racquets’ overall weight and swing weight. Typically tolerances will be in the plus/minus 7-gram range.For example:
- A 300-gram racquet can weigh from 293 to 307 grams.
- A 315-gram racquet can weigh from 308 to 322 grams.
- Different model racquets can be the same weight.
- Same-model racquets can be an ounce different in weight.
So, when multiple racquets are received at the World Headquarters they are characterized to match similar racquets within a model.
Wilson Shift 99/315 Pro
The Wilson Shift has introduced a new movement in racquet design, and the Shift 99/315 Pro rounds out the two (2) racquet series for now!
If you read the review of the 99/300 Shift, you have a good idea about the concept: on the impact, the ball moves the head down, and before the ball can leave the strings, the head moves up!
It is like you are swinging from low to high! It sounds simple, but there is more to it than that.
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Shift 99/315 Pro |
| Reference Tension | 50 |
| String | Babolat Xalt 130 |
| Machine Used | Babolat Racquet Station |
| String Bed Stiffness - RDC | 60.0 |
| String Bed Stiffness -FlexFour | 64.6 |
| String Bed Stiffness - SBS | 45.0 |
| String Bed Stiffness - ERT | 38 kg/cm |
| Racquet Flex, RDC | 70 After Stringing |
| Racquet Flex, FlexFour | 45.0 |
| Racquet - In Plane Stiffness | 383.6 Lbs/In |
| Weight, Grams | 338 |
| Weight, Ounces | 11.92 |
| Balance, mm | 321 |
| Balance, Inch | 12.64 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.79 |
| Head Length | 12.74 |
| Head Area, cm2 | 632.1 |
| Head Area, Sq. Inch | 98.0 |
| Beam Height @ Grip, mm | 23.0 |
| Beam Height @ Mid, mm | 24.0 |
| Beam Height @ Tip | 24.0 |
| Beam Width @ Grip, mm | 12.75 |
| Beam Width @ Throat, mm | 12.8 |
| Beam Width @ Mid, mm | 11.1 |
| Beam Width @ Tip, mm | 13.0(including bumper) |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .692 |
| Main String Grid | 7.13 |
| Cross String Grid | 10.44 |
| Density (% of head filled with string) | 76.0 % |
| Average Cross String Space | .522 |
| Average Main String Space | .396 |
| Dynamic Tension, Kp, ERT MasterTensometer | 38 kg/cm |
| Dynamic Tension, Lbs/in | 212.54 |
| First Moment, Nm | .832 |
| Polar Moment | 341.0 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 324 |
| Swing Weight, Ounces | 11.43 |
| Swing Weight Calculated | 346.3 (full-length) |
| Power, RDC | 49.0 |
| Control, RDC | 51.0 |
| Manueverability, RDC | 74.0 |
| Power, Calculated | 2244.1 |
| Head Points | 6.93 |
| Head Weight, % | 46.8% |
| Center of Percussion | 21.0 |
| Dwell Time, ms | 5.94 |
| Dwell Time, Spin, ms | 8.21 |
| Efective Stiffness - lbs | 32.3 |
| K, Lb/In | 192.31 |
| Recoil Weight | 161.30 |
| Twist Weight | 242.30 |
| End Weight | 135.9 |
| Tip Weight | 193.8 |
| 9 O'Clock | 98.2 |
| 3 O'Clock | 99.0 |
| Butt Cap | 130.4 |
| COF, Main | .396 |
| COF, Cross | .319 |
A Players Perspective
We are really happy to have Jason Harne join us to review and add his comments on tennis racquets and tennis strings!
I think you will agree that Jason will be a great addition to racquetquest.com based on the following tennis bio:
Jason Harne – Tennis
- Pro tennis – futures tournaments and satellites
- Stirling University, Scotland. One of the first players to be awarded the British Universities Tennis Bursary Colors Award (equivalent to All-American)
- International home nations tournament, representing Scotland, player of the tournament award.
- England county cup, division one, representing Yorkshire County.
- Spain and UK, national league tennis
- High Point University, Big South Conference, 22-2 record.
- U21 guardian direct British futures, national champion, and fastest UK serve.
- Teaching pro, UK and Spain, high-performance players
This is very impressive but the most important component for us, and you, is Jason’s incredible interest in new things! Jason is willing to try, and honestly comment on, any performance tennis equipment.
Jason will be commenting on the new Wilson Shift series later this week.
Please leave a comment or question for Jason.
Wilson Shift 99/300
After the success of the Wilson Labs version of the Shift technology, Wilson decided to make a retail version. We have received the retail version of the unique racquets and certainly want to share!
Just looking at the racquet, you may ask, “What is unique about it?” Even though the term AI is overused, in this case, it was just used! Some of the concepts of the designers were fed to AI, and it went to work!
Wilson Shift 300
We don’t know the details of the AI prompts, but we do know the very wide throat will accommodate the in-plane flexure of the shaft, which lets the head move downward upon impact and then move back while the ball is in contact with the string, therefore, contributing to “spin.”
This 99-square-inch racquet comes in two (2) versions, the 300-gram and 315-gram “Pro,” with an 18×20 string pattern.
We can feel some flex in the shaft; however, the real test is hitting with this concept, so come in and try the demo. In the meantime, take a look at the numbers.
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Shift 300 |
| Reference Tension | 58 |
| String | PEEK 7710 |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 53.0 |
| String Bed Stiffness -FlexFour | 63.5 |
| String Bed Stiffness - SBS | 43.0 |
| String Bed Stiffness - ERT | 35 kg/cm |
| Racquet Flex, RDC | 69 After Stringing |
| Racquet Flex, FlexFour | 43.0 |
| Racquet - In Plane Stiffness | 400.0 Lbs/In |
| Weight, Grams | 330 |
| Weight, Ounces | 11.64 |
| Balance, mm | 325 |
| Balance, Inch | 12.80 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.82 |
| Head Length | 12.75 |
| Head Area, cm2 | 634.0 |
| Head Area, Sq. Inch | 98.3 |
| Beam Height @ Grip, mm | 23.0 |
| Beam Height @ Mid, mm | 24.0 |
| Beam Height @ Tip | 24.0 |
| Beam Width @ Grip, mm | 12.75 |
| Beam Width @ Throat, mm | 12.8 |
| Beam Width @ Mid, mm | 11.1(PWS) |
| Beam Width @ Tip, mm | 13.0(including bumper) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .616 |
| Main String Grid | 7.25 |
| Cross String Grid | 10.81 |
| Density (% of head filled with string) | 71.7 % |
| Average Cross String Space | .494 |
| Average Main String Space | .446 |
| Dynamic Tension, Kp, ERT MasterTensometer | 35 kg/cm |
| Dynamic Tension, Lbs/in | 195.78 |
| First Moment, Nm | .826 |
| Polar Moment | 337.0 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 320 |
| Swing Weight, Ounces | 11.29 |
| Swing Weight Calculated | 348.6 (full-length) |
| Power, RDC | 54.0 |
| Control, RDC | 48.0 |
| Manueverability, RDC | 73.9 |
| Power, Calculated | 2191.7 |
| Head Points | 5.67 |
| Head Weight, % | 47.4% |
| Center of Percussion | 20.9 |
| Dwell Time, ms | 8.74 |
| Efective Stiffness - lbs | 30.0 |
| K, Lb/In | 159.87 |
| Recoil Weight | 155.31 |
| Twist Weight | 237.78 |
| End Weight | 133.1 |
| Tip Weight | 194.6 |
| 9 O'Clock | 98.4 |
| 3 O'Clock | 100.6 |
| Butt Cap | 129.0 |
| COF, Main | .396 |
| COF, Cross | .319 |
An Inside Look at String Evaluation
In this series, we will look at the various characteristics of tennis string without the tennis racquet!
Racquet Quest evaluates every string we use plus strings submitted from other sources. These evaluations are “No Prep” and “Prep”, which simply means the Prep string has been pre-stretched in the entire length. It has not been through a tennis racquet…yet!
The following images represent a string that has not been “prepped.” After these plots are fully understood we will do the same string in the”prepped” format to see if there is a difference.
Ultimate Tensile Strength
What we notice immediately is the string is very “soft” as seen in the deflection of 47.8 mm to reach 50 pounds. Also, the elasticity, the ability to recover to the original length, is fairly low.
The area under the 50-pound and 47.8 mark is the stress/strain curve that shows how the string behaves in three (3) cycles. The load and number of cycles can be changed.
The long run (linearity) from the 50-pound mark to failure is quite good and suggests consistency.
The UTS, the ultimate tensile strength, of 127.1 pounds is good for this thin string.
The following plot shows the knot strength of this string.
Knot Strength
This plot is overlayed on the previous image so a quick comparison can be made. It is common for knot strength to be lower than un-knotted string. Knot strength is primarily important to the person tying the knot. Knots rarely fail after they are successfully tied. Pulling a knot too tight or jerking can break a knot.
This plot says to us that this string needs to be handled carefully when it comes to knots! We would expect a knot strength of at least 80 pounds for typical monofilament strings, however, if this string exhibits extraordinary play characteristics anyone can learn to tie the knots!
Based on this information we would suggest this string for a player looking for extraordinary comfort, power, and relatively short life!
So, here IS the difference!
This table will clarify the differences between the Pro Staff Six-One and Pro Staff X models. While numbers are important, it is equally important to actually hit with the racquet(s) setup as you will be using them.
Pro Staff Six-One versus Pro Staff X
Click here to see the Wilson Pro Staff X
Click here to see the Wilson Pro Staff Six-One data
Pro Stock Limited Reserve
This is a high-performance string that has gone unnoticed for a while and I don’t know why!
Pro Stock Limited Reserve is a string we purchased because it has interesting characteristics that appealed to us however the client base is small. Recently, however, with the number of players that are moving away from a polyester string, this has become a popular alternative!
Pro Stock Limited Reserve
In a word, this plot looks very much like that of natural gut, and whatever you think natural gut is still considered the best performance material for racquet string!
What are we seeing here:
- Linearity, the more linear the string the more consistent (predictable)
- Elongation, at 33.1 mm at 50 pounds
- Elasticity, 71.9 %
- This is the area where the advantages of pre-stretching will be seen.
- The curve will become essentially one line meaning the string returns to a nominal length after stretching.
- Ultimate Tensile Strength, 163.6 pounds to fail (high), @107.2 mm deflection
- Knot strength, @102.4 pounds, and surpasses natural gut in this property.
What we can’t see in the plot is the construction of this multifilament string. Each strand is a thin, flat ribbon of polyolefin material. The ribbons are much like the natural gut.
The plot below is a comparison of natural gut string and is included as a visual to compare to Pro Stock Limited Reserve and show how much natural gut fibers are the same for any string manufacturer. Of course, manufacturing techniques, bonding agents, and coatings make the difference between a good gut and a not-so-good gut!
If you compare the Pro Stock Limited Reserve to natural gut you can quickly see why it may be a good string to try!
So, what IS the difference?
Wilson has presented us with a couple of choices when it comes to choosing a 100-square-inch racquet!
Later we will have a comparison table showing the pertinent property data, but now we can see the graphics difference between the two racquets:
Pro Staff Six-One 100
ProStaff X v14 100
The Pro Staff Six-One 100 has a very shiny rust color. The Pro Staff X is the matt finish used on most of the v14 Pro Staff models.
In addition to the “shining,” the Six-One has the “normal” elliptical cross-section, while the “X” has a “box beam” geometry which is a little more narrow.
The string spacing on the “X” is slightly more open, which may contribute to the power calculation being a bit higher.
The flex of the “X” is a little greater in the shaft area.
That is enough talk!”
Let’s look at the numbers:
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Pro Staff X 100, v14 |
| Reference Tension | 55 |
| String | PEEK 7710 |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 50.0 Units |
| String Bed Stiffness -FlexFour | 61.0 Pounds |
| String Bed Stiffness - SBS | 47.0 pounds |
| String Bed Stiffness - ERT | 38 Kg/Cm |
| Racquet Flex, RDC | 64 - After Stringing |
| Racquet Flex, FlexFour | 47.0 |
| Racquet - In Plane Stiffness | 467.9 Lbs/Inch |
| Weight, Grams | 340 |
| Weight, Ounces | 11.99 |
| Balance, mm | 322 |
| Balance, Inch | 12.68 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.73 |
| Head Length | 13.06 |
| Head Area, cm2 | 643.4 |
| Head Area, Sq. Inch | 99.7 |
| Beam Height @ Grip, mm | 22.3 |
| Beam Height @ Mid, mm | 22.0 |
| Beam Height @ Tip | 22.0 |
| Beam Width @ Grip, mm | 11.00 |
| Beam Width @ Throat, mm | 11.00 |
| Beam Width @ Mid, mm | 12.00(PWS) |
| Beam Width @ Tip, mm | 12.00(including bumper) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .627 |
| Main String Grid | 7.50 |
| Cross String Grid | 10.81 |
| Density (% of head filled with string) | 81.2% |
| Average Cross String Space | .569 |
| Average Main String Space | .469 |
| Dynamic Tension, Kp, ERT MasterTensometer | 38 |
| Dynamic Tension, Lbs/in | 212.54 |
| First Moment, Nm | .841 |
| Polar Moment | 341.0 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 324 |
| Swing Weight, Ounces | 11.43 |
| Swing Weight Calculated | 352.2 (full-length) |
| Power, RDC | 53.0 |
| Control, RDC | 47.0 |
| Manueverability, RDC | 71.0 |
| Power, Calculated | 2088.8 |
| Head Points | 6.61 |
| Head Weight, % | 46.9% |
| Center of Percussion | 20.8 |
| Dwell Time, ms | 9.00 |
| Efective Stiffness - lbs | 28.1 |
| K, Lb/In | 160.26 |
| Recoil Weight | 158.85 |
| Twist Weight | 240.78 |
| End Weight | 141.3 |
| Tip Weight | 198.9 |
| 9 O'Clock | 102.5 |
| 3 O'Clock | 101.9 |
| Butt Cap | 135.6 |
| COF, Main | .529 |
| COF, Cross | .499 |
Click here to see the Comparison Table
Wrong Planet?
Yesterday a good friend was in the World Headquarters, and as usual, our discussion turned to player training, the necessity, and the over-training of players, mainly juniors!
This training may include the wrong equipment setup, unnecessarily stiff strings, and sometimes stiff, light racquets. This may cause injuries at every level of player from recreational to professional!
My friend, by the way, is a Collegiate All-American, a professional player, and a coach!
After we discussed how to change this behavior, she said something quite interesting;
“John, you are on a different planet!”
Yikes!
So two things can happen;
- Abandon my planet
- Invite you to join our planet!
We have chosen number 2!
- to invite you to our planet!
There will be no need for interplanetary travel right now, but we do need to pick a name for our planet, so, the person presenting the best name will be the Mayor of our planet (your name here)…for a while.
We hope you will join us and make our planet a place we can all go to discover, learn, share, and understand as much as we can about tennis equipment, customization, stringing, and “best practices”.
Please use the “Leave Comment” tab below to submit your name for our new planet!
Wilson Pro Staff Six One 100, v14
As you know the Wilson Pro Staff Six One franchise has been around about as long as wooden racquets have been gone! A long time!
Many racquets have come and gone. Some should not have “come” and some should not have “gone”, in my opinion.
This racquet, to me, is the epitome of the Pro Staff Six One series for a few reasons.
- The 100-square-inch head size is ideal.
- The thin 22mm beam is perfect.
- The Shiny Rust finish is the best of all Pro Staffs!
- The geometry and proportions are perfect.
- The stiffness (flex) is satisfyingly low.
Wilson shiny Rust Pro Staff Six One 100
The specifications will tell us more about the racquet, but here are some things that don’t appear on the “spec” sheet.
- This is a foam-filled racquet.
- The FORTY-FIVE layup is used in this racquet.
- The grommet barrels are large enough to allow string movement.
- The bumper guard “string valley” is very deep.
Let’s take a look at the specifications.
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Pro Staff Six One |
| Reference Tension | 55 |
| String | PEEK 7710 |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 52.0 Units |
| String Bed Stiffness -FlexFour | 58.6 Pounds |
| String Bed Stiffness - SBS | 50.6 pounds |
| String Bed Stiffness - ERT | 35 Kg/Cm |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 50.0 |
| Racquet - In Plane Stiffness | 487.2 Lbs/Inch |
| Weight, Grams | 332 |
| Weight, Ounces | 11.71 |
| Balance, mm | 330 |
| Balance, Inch | 12.99 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.87 |
| Head Length | 12.82 |
| Head Area, cm2 | 641.2 |
| Head Area, Sq. Inch | 99.4 |
| Beam Height @ Grip, mm | 22.0 |
| Beam Height @ Mid, mm | 22.0 |
| Beam Height @ Tip | 22.0 |
| Beam Width @ Grip, mm | 12.85 |
| Beam Width @ Throat, mm | 12.65 |
| Beam Width @ Mid, mm | 12.38 (PWS) |
| Beam Width @ Tip, mm | 12.27 (including bumper) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .648 |
| Main String Grid | 7.20 |
| Cross String Grid | 10.06 |
| Density (% of head filled with string) | 72.9% |
| Average Cross String Space | .529 |
| Average Main String Space | .450 |
| Dynamic Tension, Kp, ERT MasterTensometer | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .847 |
| Polar Moment | 343.0 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 327 |
| Swing Weight, Ounces | 11.53 |
| Swing Weight Calculated | 361.5 (full-length) |
| Power, RDC | 51.0 |
| Control, RDC | 50.0 |
| Manueverability, RDC | 69.0 |
| Power, Calculated | 2067.9 |
| Head Points | 4.00 |
| Head Weight, % | 48.1 % |
| Center of Percussion | 20.8 |
| Dwell Time, ms | 8.82 |
| Efective Stiffness - lbs | 28.5 |
| K, Lb/In | 166.67 |
| Recoil Weight | 153.88 |
| Twist Weight | 241.58 |
| End Weight | 131.0 |
| Tip Weight | 201.5 |
| 9 O'Clock | 100.9 |
| 3 O'Clock | 102.3 |
| Butt Cap | 128.6 |
| COF, Main | .340 |
| COF, Cross | .366 |
What If?
What if you change string tension (reference) from 57 to 47?
Well, let’s see!
The client wanted to go down to 47 from 57 using the same string and, of course, in the same racquet. Here is what happens:
First, the previous data (57) was explored, and the RDC string bed stiffness was 59 when fresh.
The same racquet at 47 had an RDC string bed stiffness of 45 when fresh. That is a 23.7% decrease in string bed stiffness…fresh v fresh.
However, at the time of this stringing, due to tension loss, the 57 tension setting RDC string bed stiffness was 45, so let’s see how the 47 compares to the “used” string bed stiffness.
The RDC string bed stiffness (fresh) of the 47 is 45! So right now, both racquets have essentially the same string bed stiffness.
This will change, of course; however, if the point is to achieve a “softer” string bed right now, it would require a tension setting of less than 47!
String Shape
How’s the shape of your string?
Is it round, square, hexagonal, octagonal, triangular, or something else?
The string pictured here is square. The dimension across the flat sides is roughly .048 inches/1.22mm, which means the largest dimension is about .063 inches/1.6mm but due to the rounded edges it is less than that. The wear is happening on the “flat” side (.048/1.22),
A flat-sided string shape can create some issues when trying to achieve consistent string tension.
Side View of Fail
Flat Side Wear
String Bed View
This is expected because the string will want to align with the flat side, not the edges. This may cause the string to twist and create added friction when tensioning.
So, we can expect the “edges” to be exposed to the ball, and the “edges can create friction on the ball, which causes rotation!
Yea! How much and for how long is hard to know.
I believe it is safe to say “square” is a good “shape” for your string to be in for polyester monofilaments which we are looking at here.
Solinco Confidential (string)
As you know, Racquet Quest, LLC does not promote polyester string to most tennis players. We do, however, test any racquet string we can. This really helps us understand what happens during play and helps make a better performance selection for the player!
All of the information shown in the table is interesting but the most important data is Power Potential.
We have added three (3) Solinco strings to the Power Potential table, so take a look here
Head Gravity 2023 Team , MP, and Pro Comparison
Moving between several reviews to compare racquets is tiresome, for sure, and inefficient!
We don’t want you to be tired or inefficient, so we include our Three Racquet Comp Data for the new Head Gravity 2023 models!
A word about “dwell time”. To get a more accurate view of the racquet we have elimiiated the player from the “slow” dwell time. This allows us to see excatly what happens when the ball is “dropped” on the string bed without any external force (your swing)!
Head Gravity Pro 2023
Head Gravity Pro 2023
Here comes the new Head Gravity Pro 2023, which brings some good stuff! Like a 100 square inch head with a string pattern of 18×20!
You will see more goodies when you look at the specifications!
This new Gravity Pro has a different “vibe” than last year’s model. Maybe it is the muted graphics!
Hint: Swing Weight=338
You need to try this demo soon! Trust me!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Gravity Pro 2023 |
| Reference Tension | 53 |
| String | MonoGut ZX Pro (PEEK) |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 58.0 Units |
| String Bed Stiffness -FlexFour | 66.9 pounds |
| String Bed Stiffness - SBS | 52.4 pounds |
| String Bed Stiffness - ERT | 37 Kg/Cm |
| Racquet Flex, RDC | 64 - After stringing |
| Racquet Flex, FlexFour | 42.5 |
| Racquet - In Plane Stiffness | 467.9 lbs/Inch |
| Weight, Grams | 344 |
| Weight, Ounces | 12.13 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.849 |
| Head Length | 12.85 |
| Head Area, cm2 | 643.5 |
| Head Area, Sq. Inch | 99.7 |
| Beam Height @ Grip, mm | 21.2 |
| Beam Height @ Mid, mm | 20.5 |
| Beam Height @ Tip | 20.5 |
| Beam Width @ Grip, mm | 11.3 |
| Beam Width @ Throat, mm | 11.3 |
| Beam Width @ Mid, mm | 11.0 |
| Beam Width @ Tip, mm | 12.5 (includes bumper) |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .693 |
| Main String Grid | 7.87 |
| Cross String Grid | 9.75 |
| Density (% of head filled with string) | 71.4% |
| Average Cross String Space | .488 |
| Average Main String Space | .406 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .867 |
| Polar Moment | 353 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 338 |
| Swing Weight, Ounces | 11.92 |
| Swing Weight Calculated | 367.8 |
| Power, RDC | 48 |
| Control, RDC | 52 |
| Manueverability, RDC | 61 |
| Power, Calculated | 2179.2 |
| Head Points | 5.04 |
| Head Weight, % | 47.7% |
| Center of Percussion | 21.0 |
| Dwell Time, ms | 8.35 |
| Efective Stiffness - lbs | 30.4 |
| K, Lb/In | 185.90 |
| Recoil Weight | 163.23 |
| Twist Weight | 251.11 |
| End Weight | 138.2 |
| Tip Weight | 206.0 |
| 9 O'Clock | 104.5 |
| 3 O'Clock | 104.1 |
| Butt Cap | 133.9 |
| COF, Main | .370 |
| COF, Cross | .309 |
Head Gravity Team 2023
The new Head Gravity Team 2023 is last year’s Gravity S, a stellar racquet for many players! The 104 square-inch head fits a particular niche, and the modest stiffness will appeal to many!
The head shape on this 104-inch head is more round and nicely proportioned, which adds to the approachability of this model.
This is a great option if you want something over 100 square inch head!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Gravity Team 2023 |
| Reference Tension | 53 |
| String | MonoGut ZX Pro (PEEK) |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 50.0 Units |
| String Bed Stiffness -FlexFour | 58.6 pounds |
| String Bed Stiffness - SBS | 46.0 pounds |
| String Bed Stiffness - ERT | 34 Kg/Cg |
| Racquet Flex, RDC | 60 - After stringing |
| Racquet Flex, FlexFour | 46.0 |
| Racquet - In Plane Stiffness | 394.2 lbs/Inch |
| Weight, Grams | 310 |
| Weight, Ounces | 10.93 |
| Balance, mm | 335 |
| Balance, Inch | 13.23 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 10.125 |
| Head Length | 13.14 |
| Head Area, cm2 | 674.1 |
| Head Area, Sq. Inch | 104.5 |
| Beam Height @ Grip, mm | 22.5 |
| Beam Height @ Mid, mm | 24.2 |
| Beam Height @ Tip | 24.2 |
| Beam Width @ Grip, mm | 10.8 |
| Beam Width @ Throat, mm | 10.5 |
| Beam Width @ Mid, mm | 11.0 |
| Beam Width @ Tip, mm | 12.2 (includes bumper) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .616 |
| Main String Grid | 7.87 |
| Cross String Grid | 10.50 |
| Density (% of head filled with string) | 75.1% |
| Average Cross String Space | .506 |
| Average Main String Space | .484 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.16 |
| First Moment, Nm | .809 |
| Polar Moment | 324 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 308 |
| Swing Weight, Ounces | 10.86 |
| Swing Weight Calculated | 350.0 |
| Power, RDC | 47 |
| Control, RDC | 55 |
| Manueverability, RDC | 81 |
| Power, Calculated | 1950.2 |
| Head Points | 2.20 |
| Head Weight, % | 49.0% |
| Center of Percussion | 20.5 |
| Dwell Time, ms | 9.00 |
| Efective Stiffness - lbs | 27.3 |
| K, Lb/In | 160.26 |
| Recoil Weight | 137.68 |
| Twist Weight | 236.44 |
| End Weight | 116.9 |
| Tip Weight | 191.3 |
| 9 O'Clock | 96.6 |
| 3 O'Clock | 97.1 |
| Butt Cap | 114.5 |
| COF, Main | .412 |
| COF, Cross | .309 |
Head Gravity MP 2023
Close behind the new Head Radical comes the new Head Gravity 2023! Not one but three (3!). The Gravity Pro, the Gravity MP, and the Gravity Team!
This Gravity MP 2023 demo racquet is ready to hit today! If you have not hit with a Gravity you will be intrigued by the weight distribution.
We are starting with the Gravity MP 2023.
Head Gravity has always used a multi-color graphic package with one color on one side and another color on the other side. This was clever, and many players liked the look.
The new models use a “color-shifting” graphic that you can see here. The colors are subtly different depending on how you look at the racquet.
And the graphic starts at the butt end on one side and starts at the tip on the other! So it has a lot going on.
The racquet is a 100-square-inch head with a fairly thin beam and deep throat shaft.
The string pattern is 16×20, which fills up the hitting area and produces a fairly dense pattern in the center of the racquet. This may contribute to a slightly longer string life.
You may notice the stiffness of this racquet should be perfect for the control component of your game and be very arm friendly (see effective stiffness).
Head Gravity MP 2023
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Gravity MP 2023 |
| Reference Tension | 53 |
| String | MonoGut ZX Pro (PEEK) |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 50.0 Units |
| String Bed Stiffness -FlexFour | 60.8 pounds |
| String Bed Stiffness - SBS | 49.6 pounds |
| String Bed Stiffness - ERT | 35 Kg/Cm |
| Racquet Flex, RDC | 57 - After stringing |
| Racquet Flex, FlexFour | 39.0 |
| Racquet - In Plane Stiffness | 397.4 lbs/Inch |
| Weight, Grams | 318 |
| Weight, Ounces | 11.22 |
| Balance, mm | 335 |
| Balance, Inch | 13.19 |
| Length, Cm | 68.6 |
| Length, Inch | 27.03 |
| Head Width | 9.91 |
| Head Length | 12.86 |
| Head Area, cm2 | 645.9 |
| Head Area, Sq. Inch | 100.1 |
| Beam Height @ Grip, mm | 21.2 |
| Beam Height @ Mid, mm | 22.5 |
| Beam Height @ Tip | 22.5 |
| Beam Width @ Grip, mm | 10.6 |
| Beam Width @ Throat, mm | 10.6 |
| Beam Width @ Mid, mm | 11.0 |
| Beam Width @ Tip, mm | 12.3 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .617 |
| Main String Grid | 7.70 |
| Cross String Grid | 10.25 |
| Density (% of head filled with string) | 70.0% |
| Average Cross String Space | .515 |
| Average Main String Space | .425 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .827 |
| Polar Moment | 338 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 324 |
| Swing Weight, Ounces | 11.43 |
| Swing Weight Calculated | 356.9 |
| Power, RDC | 46 |
| Control, RDC | 56 |
| Manueverability, RDC | 71 |
| Power, Calculated | 1867.4 |
| Head Points | 2.68 |
| Head Weight, % | 48.8% |
| Center of Percussion | 21.0 |
| Dwell Time, ms | 9.00 |
| Efective Stiffness - lbs | 26.6 |
| K, Lb/In | 160.26 |
| Recoil Weight | 150.77 |
| Twist Weight | 233.27 |
| End Weight | 122.3 |
| Tip Weight | 197.8 |
| 9 O'Clock | 98.9 |
| 3 O'Clock | 99.7 |
| Butt Cap | 119.8 |
| COF, Main | .426 |
| COF, Cross | .378 |
Wilson Pro Staff v14
Wilson Pro Staff 97 v14
Wilson Pro Staff v14
The initial response to the new Wilson Pro Staff 97 v14 graphics pack is similar to the Blade shifting color graphics…you either like it, or you don’t! There seems to be very little “in-between.”
Wilson Pro Staff v14
We care about the racquet’s appearance, but we really care about the specifications!
So here we go…
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Pro Staff 97 v14 |
| Reference Tension | 55 |
| String | PEEK 1.25mm |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 51.0 Units |
| String Bed Stiffness -FlexFour | 64.1 pounds |
| String Bed Stiffness - SBS | 49.0 pounds |
| String Bed Stiffness - ERT | 34 Kg/Cm |
| Racquet Flex, RDC | 66 - After stringing |
| Racquet Flex, FlexFour | 49.0 |
| Racquet - In Plane Stiffness | 447.2 lbs/Inch |
| Weight, Grams | 330 |
| Weight, Ounces | 11.64 |
| Balance, mm | 324 |
| Balance, Inch | 12.76 |
| Length, Cm | 68.57 |
| Length, Inch | 27.00 |
| Head Width | 9.438 |
| Head Length | 12.80 |
| Head Area, cm2 | 623.0 |
| Head Area, Sq. Inch | 94.9 |
| Beam Height @ Grip, mm | 21.0 |
| Beam Height @ Mid, mm | 21.8 |
| Beam Height @ Tip | 21.8 |
| Beam Width @ Grip, mm | 11.1 |
| Beam Width @ Throat, mm | 11.0 |
| Beam Width @ Mid, mm | 11.0 |
| Beam Width @ Tip, mm | 12.8 (includes bumper guard) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .621 |
| Main String Grid | 7.25 |
| Cross String Grid | 10.13 |
| Density (% of head filled with string) | 77.4% |
| Average Cross String Space | .533 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.16 |
| First Moment, Nm | .822 |
| Polar Moment | 336 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 322 |
| Swing Weight, Ounces | 11.36 |
| Swing Weight Calculated | 346.4 |
| Power, RDC | 53 |
| Control, RDC | 47 |
| Manueverability, RDC | 72 |
| Power, Calculated | 2036.6 |
| Head Points | 5.98 |
| Head Weight, % | 47.2% |
| Center of Percussion | 21.1 |
| Dwell Time, ms | 8.91 |
| Efective Stiffness - lbs | 28.8 |
| K, Lb/In | 163.46 |
| Recoil Weight | 158.78 |
| Twist Weight | 220.98 |
| End Weight | 134.0 |
| Tip Weight | 195.9 |
| 9 O'Clock | 100.8 |
| 3 O'Clock | 100.5 |
| Butt Cap | 128.1 |
| COF, Main | .323 |
| COF, Cross | .323 |
Numbers, numbers, numbers! What do they mean?
With each of our racquet reviews a long list of numbers is included. It has been a few years since we explained what these numbers mean so here it is;
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Radical MP 2023 |
| Reference Tension | 55 (what you tell the stingers to set the stringing machine). This should be replaced by String Bed Stiffness (SBS) |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 53.0 Units (Babolat RDC) |
| String Bed Stiffness -FlexFour | 64.9 pounds (Flex Four) |
| String Bed Stiffness - SBS | 51.8 pounds (Racquet Quest string bed stiffness SBS Master) |
| String Bed Stiffness - ERT | 35 Kg/Cm (previously Beer's ERT1000) |
| Racquet Flex, Babolat RDC | 65 - After stringing (unstrung racquets will be slightly stiffer. Loaded from the tip) |
| Racquet Flex, FlexFour | 44.5 (Loaded from the COP) |
| Racquet - In Plane Stiffness | 379.7 lbs/Inch (stiffness across the 3 ad 9 o'clock positions of the racquet head) |
| Weight, Grams | 326 |
| Weight, Ounces | 11.50 |
| Balance, mm | 333 |
| Balance, Inch | 13.11 |
| Length, Cm | 68.57 |
| Length, Inch | 27.00 |
| Head Width | 9.63 |
| Head Length | 12.79 |
| Head Area, cm2 | 623.0 |
| Head Area, Sq. Inch | 96.7 |
| Beam Height @ Grip, mm | 21.0 (how thick the racquet is looking at the side) |
| Beam Height @ Mid, mm | 22.5 (how thick the racquet is looking at the side) |
| Beam Height @ Tip | 20.5 (how thick the racquet is looking at the side) |
| Beam Width @ Grip, mm | 12.5 (how thick the racquet is looking at the front or face view) |
| Beam Width @ Throat, mm | 11.5 (how thick the racquet is looking at the front or face view) |
| Beam Width @ Mid, mm | 12.8 (how thick the racquet is looking at the front or face view) |
| Beam Width @ Tip, mm | 12.8 (how thick the racquet is looking at the front or face view) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .634 ( typically the natural ratio) |
| Main String Grid | 7.18 (the distance between the two outer most main strings) |
| Cross String Grid | 9.44 (the distance between the two outer most cross strings) |
| Density (% of head filled with string) | 69.6% (how much of the head area is filled with string) |
| Average Cross String Space | .494 (how far apart the strings are). The farther apart the quicker the wear. |
| Average Main String Space | .449 (how far apart the strings are). The farther apart the quicker the wear. |
| Dynamic Tension, Kp, ERT | 35 (string bed stiffness in kilos per centimeter) |
| Dynamic Tension, Lbs/in | 195.76 (DT converted to pounds per inch) |
| First Moment, Nm | .841 (sometimes called pickup weight) |
| Polar Moment | 347 (torsional weight) |
| Torsional Stability | 16 ( resistance to twisting on off center hits) |
| Swing Weight, Kg/cm2 | 331 (the dynamic weight and the most significant property) |
| Swing Weight, Ounces | 11.68 |
| Swing Weight Calculated | 361.5 (calculated from the butt end to the tip) |
| Power, RDC | 52 (property calculated by Babolat RDC) |
| Control, RDC | 49 (property calculated by Babolat RDC) |
| Manueverability, RDC | 66 (property calculated by Babolat RDC) |
| Power, Calculated | 2101.4 (calculation based on several racquet properties) |
| Head Points | 3.15 ( a point is generally consider to be .125 inches/3.18mm) |
| Head Weight, % | 48.5% |
| Center of Percussion | 21.1 (highest COR) |
| Dwell Time, ms | 8.74 (length of time the ball is in contact with the string without a swing) |
| Efective Stiffness - lbs | 29.2 ( the calculated combined stiffness of the racquet and sting bed) |
| K, Lb/In | 169.87 (string bed stiffness in pounds/inch) |
| Recoil Weight | 156.44 (resistance to twisting about the grip) |
| Twist Weight | 226.48 (resistance to twisting about the neutral axis) |
| End Weight | 126.0 (two scale system to calculate CG) |
| Tip Weight | 197.7 (two scale system to calculate CG) |
| 9 O'Clock | 105.1 (three scale system to assure symmetry) |
| 3 O'Clock | 104.7(three scale system to assure symmetry) |
| Butt Cap | 115.6 (three scale system to assure symmetry) |
| COF, Main | .416 (the stickiness of the string bed sliding the ball with the main strings) |
| COF, Cross | .388(the stickiness of the string bed sliding the ball with the cross strings) |
What is wrong with this picture?
Actually, it is going to be two (2) pictures! One with no narrative and one with an explanation of what is wrong!
Did you see what was wrong with this picture? If you did, congratulations are in order!
If you didn’t know what was wrong with this picture, here it is! If you receive a freshly strung racquet that looks like this, take a close look at the strings and do not accept it if there is a “mis-weave” in the string bed!
Sometimes this condition is not easy to spot, so take a good look.
Some Time Off!
We are taking a few days off!
We are spending some time with one of our daughters and grandson…finally!
Thank you!
Head Radical MP 2023
You have seen the pretty pictures; now see the specs of this new Radical series!
We are starting our property review with the Head Radical MP 2023. The MP version will probably be the most popular due to the very lovely weight and “player” style head size of 98 inches!
Head Radical MP 2023
As you look at the following specifications you may notice the addition of some “numbers”, specifically “beam width”.
We have been taking this number for many years but now believe it is time to expose it to you, the readers.
Briefly, the beam height-to-width ratio contributes to in-plane stiffness which is important for consistent string bed stiffness (SBS).
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Radical MP 2023 |
| Reference Tension | 55 |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 53.0 Units |
| String Bed Stiffness -FlexFour | 64.9 pounds |
| String Bed Stiffness - SBS | 51.8 pounds |
| String Bed Stiffness - ERT | 35 Kg/Cm |
| Racquet Flex, RDC | 65 - After stringing |
| Racquet Flex, FlexFour | 44.5 |
| Racquet - In Plane Stiffness | 379.7 lbs/Inch |
| Weight, Grams | 326 |
| Weight, Ounces | 11.50 |
| Balance, mm | 333 |
| Balance, Inch | 13.11 |
| Length, Cm | 68.57 |
| Length, Inch | 27.00 |
| Head Width | 9.63 |
| Head Length | 12.79 |
| Head Area, cm2 | 623.0 |
| Head Area, Sq. Inch | 96.7 |
| Beam Height @ Grip, mm | 21.0 |
| Beam Height @ Mid, mm | 22.5 |
| Beam Height @ Tip | 20.5 |
| Beam Width @ Grip, mm | 12.5 |
| Beam Width @ Throat, mm | 11.5 |
| Beam Width @ Mid, mm | 12.8 |
| Beam Width @ Tip, mm | 12.8 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .634 |
| Main String Grid | 7.18 |
| Cross String Grid | 9.44 |
| Density (% of head filled with string) | 69.6% |
| Average Cross String Space | .494 |
| Average Main String Space | .449 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .841 |
| Polar Moment | 347 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 331 |
| Swing Weight, Ounces | 11.68 |
| Swing Weight Calculated | 361.5 |
| Power, RDC | 52 |
| Control, RDC | 49 |
| Manueverability, RDC | 66 |
| Power, Calculated | 2101.4 |
| Head Points | 3.15 |
| Head Weight, % | 48.5% |
| Center of Percussion | 21.1 |
| Dwell Time, ms | 8.74 |
| Efective Stiffness - lbs | 29.2 |
| K, Lb/In | 169.87 |
| Recoil Weight | 156.44 |
| Twist Weight | 226.48 |
| End Weight | 126.0 |
| Tip Weight | 197.7 |
| 9 O'Clock | 105.1 |
| 3 O'Clock | 104.7 |
| Butt Cap | 115.6 |
| COF, Main | .416 |
| COF, Cross | .388 |
Head…just when you thought it couldn’t get any better
The Head Radical has always been one of the best performance racquets available and doesn’t require much in the way of annual changes!
We think this new group is right on target! Adding Auxetic in the throat brings this series into the overall success of the Auxetic component!
We will be doing full reviews very soon, but in the meantime, take a look at these new Radicals!
The Team is the new “S” in the Radical Series! Based on our initial testing, we think this model has a trick up its sleeve!
Clamp Riser…your friend!
The Clamp Riser eliminates the need to pull two main strings to start a string job! There is really no need to use that procedure.
Sold as a set of 2. Can be used at a 20mm or 30mm rise depending on rotation.
1⃝ Any stringing machine with long, rotating string clamps is too low to capture the string properly for the first tension pull. The Clamp Riser fits under the clamp and raises it!
2⃝ The clamp holds the string securely at the proper height for the first pull, one string at a time!
Simply rotate the clamp riser depending on whether you need 20mm of height or 30mm.
We have found that Baiardo prefers the 30mm height, as seen here. The riser height must be enough to allow the clamp base to “lock”.
Charges for shipping outside the US will be added to the total cost minus the US shipping charge.
The Same but Different!
How can two totally different things be the same in so many ways?
Here is a good example:
Wilson Sensation 16, natural v Wilson Sensation Plus 17, black.
Same but Different!
Looking a the stress/strain portion of the graph, it is nearly impossible to see any difference!
Both strings exhibit good elongation and elasticity.
Finally, when it comes to UTS the Sensation is a little stronger, as you would expect, for a 1.33mm string.
The Sensation Plus measures 1.26mm! So, the UTS is pretty good!
If you have been using Sensation but would like a black, thin string from Wilson simply use Sensation Plus!
ZUS Tennis
Never heard of them? I hadn’t either until yesterday!
ZUS is a Chicago-based company that offers several racquets with various specifications available.
A ZUS Custom Sven Goth Design came in for work, so we had a great opportunity to get all of the specifications and include them in a “racquet review”!
First, the racquet seems to be a well-made version of the Wilson Pro Staff RF, with an ever so slightly thinner modified box section beam. the geometry is very much like the Wilson Pro Staff RF, as is the weight.
This racquet has a bunch of weight at the rear end, plus a shrink sleeve to increase the grip size, so it is loaded up with weight down there, which is OK!
Rear Weight
The racquet is foamed, probably the entire tube, which may contribute a more muted feel than a non-foamed racquet. The Pro Staff RF is also foam filled.
The small oval piece is a lead or steel, weight sandwiched between the two halves of the shaft. This construction makes it impossible to remove that weight if you want to, but it is good to have it there!
| Manufacturer | ZUS |
|---|---|
| Racquet Model | ZUS Custom Sven Goth Design |
| Reference Tension | 50 |
| String | Prince Tour XR 16 |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 53.0 Units |
| String Bed Stiffness -FlexFour | 59.1 pounds |
| String Bed Stiffness - SBS | 50.6 pounds |
| String Bed Stiffness - ERT | 35 Kg/Cm |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 41.0 |
| Racquet - In Plane Stiffness | 438.0 lbs/Inch |
| Weight, Grams | 354 |
| Weight, Ounces | 12.49 |
| Balance, mm | 316 |
| Balance, Inch | 12.44 |
| Length, Cm | 68.57 |
| Length, Inch | 27.00 |
| Head Width | 9.41 |
| Head Length | 12.80 |
| Head Area, cm2 | 610.1 |
| Head Area, Sq. Inch | 94.6 |
| Beam Height @ Grip, mm | 20.5 |
| Beam Height @ Mid, mm | 20.2 |
| Beam Height @ Tip | 20.6 |
| Beam Width @ Grip, mm | 10.8 |
| Beam Width @ Throat, mm | 10.8 |
| Beam Width @ Mid, mm | 11.6 |
| Beam Width @ Tip, mm | 12.4 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .619 |
| Main String Grid | 7.25 |
| Cross String Grid | 9.68 |
| Density (% of head filled with string) | .742 |
| Average Cross String Space | .509 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .854 |
| Polar Moment | 348 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 330 |
| Swing Weight, Ounces | 11.64 |
| Swing Weight Calculated | 353.5 |
| Power, RDC | 51 |
| Control, RDC | 49 |
| Manueverability, RDC | 67 |
| Power, Calculated | 1965.9 |
| Head Points | 8.46 |
| Head Weight, % | 46.1% |
| Center of Percussion | 20.9 |
| Dwell Time, ms | 8.74 |
| Efective Stiffness - lbs | 28.8 |
| K, Lb/In | 169.87 |
| Recoil Weight | 167.26 |
| Twist Weight | 235.57 |
| End Weight | 151.7 |
| Tip Weight | 197.9 |
| 9 O'Clock | 105.5 |
| 3 O'Clock | 108.1 |
| Butt Cap | 137.1 |
| COF, Main | .382 |
| COF, Cross | .306 |
Surprise, surprise!
In all of my many years of tennis racquet work, two things happened this very month that I have never seen before!
How can this happen? One surprise is amazing, but two?
You can click here to read about “Failure by Fruit”
You can click here to read about the “ZUS tennis racquet” and see some specs so you will be really informed!
We wonder what surprises are waiting for us!
Don’t be Beanie-less!
RQ Beanies!
Bag your beanie at Racquet Quest World Headquarters while supplies last. These are awesome!
Don’t be without a beanie for your chilly early morning tennis that is coming soon! Yes, even in Florida!
If you can’t stop by the World Headquarters we can send it. Just tell us where!
Bag a Beanie!
My chat with Oscar!
It is a rare opportunity to chat with one of the greatest basketball players of all time! I am happy to share our conversation with all of you on our Racquet Quest Podcast!
Our podcast is available on Apple, Spotify, YouTube, and Twitter, or you can simply click the episode on the left side of the home page and listen without going anywhere!
This is a really fun conversation, and I hope you will listen and comment if you want.
Thank you, Oscar, for sharing, and thank you, Tia, for bringing us together!
Failure by Fruit!
Tennis strings fail for several reasons… but fruit!
I have been doing tennis racquet work for many years. However, this is a first for me!
Failure by Fruit
So what actually happened here? This player carries everything she needs to compete at tournaments, including fruit. In this case, it was bananas!
Well, bananas don’t last long, and these decided to go and take some very good sting with them!
The racquets were placed in the bag and remained there while the bananas did what bananas do…go bad!
Apparently, where the bananas contacted the string, the chemicals in the decomposing banana were enough to eat the string in not one but two racquets!
So, if you are considering sharing your bag with bananas, be sure they are separated from the racquets!
We are preparing to work on these racquets, and I can say they do smell good!
Solinco Black Out 300XTD
Solinco is not new to the tennis racquet business but the new offerings have some excellent features that I don’t remember on the previous ones we saw.
The two (2) racquets being reviewed are the Black Out 300XTD and White Out 305 XTD
Solinco Black Out
Cleverly, one is all black and one is all white! I mention this because the graphics are minimal which I think is a very good design platform.
We will start the review with the Black Out. As you might have guessed the 300XTD is a 300-gram, 27.5-inch-long racquet having a 100-square-inch hitting area.
This racquet comes with three (3) butt caps for adding much-needed weight! Pop out the 0-gram standard and pop in a 5 or 10-gram replacement! When you pop out the butt cap you will see this is a non-filled (hollow) racquet, and, there is nothing wrong with that. You will also see that the grip pallet is a molded foam pallet, allowing for minor size and shape changes.
That is enough narrative. Take a look at the specifications below:
| Manufacturer | Solinco |
|---|---|
| Racquet Model | Solinco Black Out 300XTD |
| Reference Tension | 42 |
| String | Volkl V-Star 18 |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 42.0 Units |
| String Bed Stiffness -FlexFour | 39.0 pounds |
| String Bed Stiffness - SBS | 41.3 pounds |
| String Bed Stiffness - ERT | 28 Kg/Cm |
| Racquet Flex, RDC | 70 - After stringing |
| Racquet Flex, FlexFour | 49.0 |
| Racquet - In Plane Stiffness | 377.4 lbs/Inch |
| Weight, Grams | 330 |
| Weight, Ounces | 11.64 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 69.9 |
| Length, Inch | 27.52 |
| Head Width | 9.81 |
| Head Length | 12.98 |
| Head Area, cm2 | 645.3 |
| Head Area, Sq. Inch | 100.0 |
| Beam Height @ Grip, mm | 23.3 |
| Beam Height @ Mid, mm | 24.5 |
| Beam Height @ Tip | 23.7 |
| Beam Width @ Grip, mm | 16.0 |
| Beam Width @ Throat, mm | 15.7 |
| Beam Width @ Mid, mm | 11.0 |
| Beam Width @ Tip, mm | 12.8 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .637 |
| Main String Grid | 7.70 |
| Cross String Grid | 10.68 |
| Density (% of head filled with string) | .822 |
| Average Cross String Space | .562 |
| Average Main String Space | .481 |
| Dynamic Tension, Kp, ERT | 30 |
| Dynamic Tension, Lbs/in | 167.79 |
| First Moment, Nm | .819 |
| Polar Moment | 332 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 317 |
| Swing Weight, Ounces | 11.18 |
| Swing Weight Calculated | 344.3 |
| Power, RDC | 60 |
| Control, RDC | 36 |
| Manueverability, RDC | 75 |
| Power, Calculated | 2330.5 |
| Head Points | 8.35 |
| Head Weight, % | 46.2% |
| Center of Percussion | 20.9 |
| Dwell Time, ms | 10.19 |
| Efective Stiffness - lbs | 25.0 |
| K, Lb/In | 125.00 |
| Recoil Weight | 155.24 |
| Twist Weight | 237.60 |
| End Weight | 136.4 |
| Tip Weight | 192.7 |
| 9 O'Clock | 100.4 |
| 3 O'Clock | 101.3 |
| Butt Cap | 127.5 |
| COF, Main | .370 |
| COF, Cross | .332 |
Solinco White Out 305XTD
Solinco is not new to the tennis racquet space but this model is a much better effort than the ones we have seen previously.
Solinco White Out
This White Out 305XTD is a 305-gram, 27 ½ long, 98-square-inch hitting area, thin beam racquet, that happens to be foam filled. The White Out is basically white…which is very good! The grip pallet is a molded foam format that will allow minor size and shape modifications.
The standard butt cap can be replaced with a 5 or 10-gram unit for needed weight.
We have added the beam height and beam width to the specification sheet. Beam height is the thickness of the racquet when looking a the side and beam width is the thickness of the racquet when looking at the face.
Take a look at all the specifications:
| Manufacturer | Solinco |
|---|---|
| Racquet Model | Solinco White Out 305XTD |
| Reference Tension | 42 |
| String | Volkl V-Star 18 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 39.0 |
| ASPS, FlexFour | 50.5 |
| Racquet Flex, RDC | 67 - After stringing |
| Racquet Flex, FlexFour | 50.0 |
| Racquet - In Plane Stiffness | 350.9 lbs/Inch |
| Weight, Grams | 330 |
| Weight, Ounces | 11.64 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 69.9 |
| Length, Inch | 27.52 |
| Head Width | 9.62 |
| Head Length | 12.95 |
| Head Area, cm2 | 631.5 |
| Head Area, Sq. Inch | 97.9 |
| Beam Height @ Grip, mm | 22.0 |
| Beam Height @ Mid, mm | 22.0 |
| Beam Height @ Tip | 22.3 |
| Beam Width @ Grip, mm | 11.6 |
| Beam Width @ Throat, mm | 13.0 |
| Beam Width @ Mid, mm | 10.8 |
| Beam Width @ Tip, mm | 12.5 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .626 |
| Main String Grid | 7.70 |
| Cross String Grid | 10.56 |
| Density (% of head filled with string) | .831 |
| Average Cross String Space | .556 |
| Average Main String Space | .481 |
| Dynamic Tension, Kp, ERT | 30 |
| Dynamic Tension, Lbs/in | 167.79 |
| First Moment, Nm | .819 |
| Polar Moment | 334 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 320 |
| Swing Weight, Ounces | 11.29 |
| Swing Weight Calculated | 344.3 |
| Power, RDC | 57 |
| Control, RDC | 40 |
| Manueverability, RDC | 73 |
| Power, Calculated | 2203.6 |
| Head Points | 8.35 |
| Head Weight, % | 46.2% |
| Center of Percussion | 21.1 |
| Dwell Time, ms | 10.19 |
| Efective Stiffness - lbs | 24.7 |
| K, Lb/In | 125.00 |
| Recoil Weight | 158.24 |
| Twist Weight | 229.13 |
| End Weight | 100.1 |
| Tip Weight | 191.2 |
| 9 O'Clock | 100.1 |
| 3 O'Clock | 100.6 |
| Butt Cap | 128.4 |
| COF, Main | .362 |
| COF, Cross | .300 |
Comparing Racquets (for real)
The Racquet Quest podcast recently aired a session on comparing racquets, so, to be fair I wanted to post that same data here. If you listened to the podcast this will sound familiar.
These racquets are not random. These racquets are owned by a client that is seeking an upgrade without going overboard!
Here is what Jess has to say:
“Hey, John –
Jess definitely likes the VS more than the Rafa. She said that she gets more easy power and stability with the Rafa but she’s able to accelerate faster on the forehand side with the VS.
She also felt like the VS was more maneuverable at the net. She said that if she’s in control of the point that she can really whip her forehand for a winner. She definitely noticed the lighter swing weight and liked that.
However, she also said that sometimes it feels a little unstable – like the VS is getting pushed around a bit. For example, she noticed that the head of the racquet can twist sometimes if her opponent nails a hard ball at her.
She has more control for sure with the VS – felt like she blasted more balls out with the Rafa. Overall, she likes the racquet- just would like a little more stability.”
By the way, Jess had not seen the racquet data prior to her hitting. So, there you have it. I believe you can see how much numbers help us find the right performance characteristics for a racquet.
Let’s Compare
We publish many racquet reviews that include comprehensive data to be used to speed up the selection process for players looking to review racquets and possibly demo them.
We thought it might be fun to do a little comparison of racquets in a simple format and we are starting with this one!
When considering racquets there is one “weight” that outweighs them all and that is swing weight! Swing weight is also described as inertia which is, in our discussions, the term used to describe the momentum of a tennis racquet. Once it gets going it does not want to stop which equals power (sort of F=MA)
We will be adding groups of three (3) racquets whenever possible and when new racquets are introduced.
Our Questron in Action!
As you know, Racquet Quest is a data-driven business, and data requires numbers. To generate those numbers, we have designed and built several devices.
One device is the Questron!
The Questron is used to test every string we receive, and the data is compiled to understand where that particular string fits.
So, instead of talking about it we have included a short video!
Thank you for watching our Questron in Action! If you have a question, or a particular string of interest, please let us know. We may have already taken the data! On GASP.network there are many graphs of previous tests. GASP.network is a membership ($40.00 one time) site.
Are Last Years Racquets Worth…Less?
It happens every year.
You know, introducing “new and Improved” tennis racquet(s)! Not one, but many!
How much better can they be? Make no mistake, new materials are always available, and those can be beneficial to the properties of a tennis racquet; however, in my opinion, and history, most of those properties will not be a significant “positive” to the player, and in some cases may be less than “desirable”.
So are last year’s racquets worthless? Absolutely not!
To make room at retail for the new racquets, last year’s models are substantially reduced. Sometimes to an unreasonably low price for the product! This is “good news” for manufacturers and online giants but not necessarily for your local tennis specialty shop. So what, you say!
This is “what”
From what we see at the World Headquarters of Racquet Quest, the online and other non-tennis specific outlets’ preparation of the racquet(s) may be sub-standard, and in fact, sometimes the racquets are not the desired model (another story for another time). We don’t believe this is intentional, but it does create issues for the purchaser and maybe the seller.
The business model of Racquet Quest has always been to provide the very best preparation for every tennis racquet! We recognize that players want the best possible deal on everything purchased. However, we keep a supply of outstanding tennis racquets that are best sellers of last year, and maybe two years ago! These racquets will not be relegated to the scrap heap, nor will they be “given away”! They are valuable!
Of course, our “full custom” racquets are always available for those demanding the very best and are willing to invest what it takes to get there! It may be less than you think, and it may be a racquet that is not a “current” model.
All we ask is that you take the time to confirm what you intend to get and that you consider using your local tennis specialty shop for preparation!
Thank you!
Wondering about the ThermoPen ONE?
If you were wondering why the ThermopPen ONE was on this site I don’t blame you! I was surprised to see it there myself!
Here is why…
A good client and friend is in the food supply service and we are constantly talking about food and string! He used VS Touch by the way. Anyway, I asked about a food thermometer and he recommended this one, and I went to the ThermPen site while working on this one.
String Savers
String savers are on my mind today for several reasons so I thought I would post something about them that may be of interest. Let’s see!
String Savers are tiny little pieces of material that are “grooved” to cradle the string and provide a tiny barrier between rubbing strings, therefore creating a longer, happier life!
String Savers are normally used when stringing your tennis racquet with natural gut string to help the $75.00 job last longer.
But what else do string savers do?
Well, in the case we see here it increases the swing weight from 332 to 341! So 286 of these tiny things have an impact on swing weight!
Probably the typical reaction would be an increase in string bed stiffness but that is not the case, plus the string bed stiffness is ever-changing anyway.
Searching for something?
The Racquet Quest website has always had a “search” function. However, you may not know where it is!
I didn’t because I usually don’t search from the “home” page.
To search the entire site for any word, go to the “Search RQ” field on the left side of the page, not too far from the top.
Type in what you are looking for, and soon you will have the content you want!
String Frequency Calculator on your iOS or Android Phone!
We are happy to announce our popular SFC application can now be carried around on your phone and tablet!
String Frequency Calculator
Scan this QR code, and the application will be on your phone whenever you need to know when to string your racquet!
If you are not demanding peak performance for your game right now, you can eliminate your “player style,” which will increase the time between suggested stringing.
The current “player styles” are beg, rec, club, and tour.
A “tour” player would want peak performance, but it is also essential that we, at any level, should expect our string to help us!
The “Value/Playability ratio is subjective (a little) but it places a value on the enjoyment, and comfort, and we know that playing with Natural Gut is more enjoyable than polyester, therefore the favorable ratio.
Our String Frequency Calculator application will help us enjoy tennis more, knowing that we maximize the racquet!
The Racquet Quest ‘String Frequency Calculator’ app as well as other apps we plan on releasing in the near future, are hosted by and available free to users via our partner “Open as App”.
Steps to download and use our free apps:
- When you scan our app QR code, you will be prompted to download the Open as App iOS or Android app to your device and create an account. Alternatively, you can simply sign in using your Microsoft 365, Google, or Apple account.
- You will then see the app you scanned a QR code for in Open as App.
- Once you open the String Frequency Calculator app within Open as App, you will be able to add it to your iOS or Android home screen, avoiding having to open Open as App every time to access our apps.
To do so, follow the simple steps explained below:
- Open on your phone the mobile application “Open as App”
- Tap on the app of interest (eg. “Stringing Frequency Calculator”)
- Tap on the three vertical dots at the top-right of the screen
- Tap “Add to Home screen”
- Confirm by tapping “Add”
- Done! You should now see the application directly on the home screen of your device!
Congratulations, Mustangs!
The New Washington Mustangs tennis has grown from five (5) to twelve (12) players in just one year! Fantastic!
New Washington Mustangs
The team is playing Jeffersonville in the Sectionals which will be a tough match! The Mustangs #! Doubles won their conference so don’t be surprised at how well they do against anyone!
The only name I know in the picture is Rafael, the coach on the left. Rafael moved from Florida to Indiana and took his love of tennis with him! It looks like his team is poised to do great things!
Maybe we will see them at the USTA Campus sometime!
Way to go team!
SBS Update
We have gone through our string bed stiffness device (SBS) and are nearly settled on the final design! We have been using this device for several months, and we are very excited!
As discussed before, Racquet Quest, LLC believes string bed stiffness is the most efficient and accurate way to communicate how we want our racquet to feel…not reference tension!
We are on this mission for that reason!
There have been, and still are, several devices that are used for that, but what is needed is a player, coach, technician, and supplier consortium to make it happen!
The device will be 100% mechanical, light and fit in a tennis bag, easy and fun to use, and accurate! That is a lot to ask from a single device, but I think we have achieved it!
Oh, yes, it must be financially acceptable to every tennis player, which it will be!
The first pre-production units may be available for testing before general release.
We Need You!
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Congratulations, Redbug Topspinners!
Redbug Topspinners
A big Thank You to your Captain, Reggie, for sharing this news with us!
We are anxious to hear how you do in the new season so please keep us informed!
Good luck!
The Elephant in the Room!
I suspect we all have heard that expression!
It means there is something that everyone tries to ignore, but it is too large to do so!
I recently read an article in Racquet Sports Industries authored by Georgetta L. Morque. The title is “Tackling Tennis Elbow.” Tennis elbow is an important topic and deserves much attention. Georgetta is writing about ways to mitigate tennis elbow after the fact.
Let’s try to prevent tennis elbow, so it does not need to be treated!
When we say stiff, it means a string with less than 4% elongation at 60 pounds which is our testing parameter. Most strings, and for this discussion, strings exhibiting that property will be monofilament PET-based (polyester).
Fully understanding this required a lot of testing, both lab and play, for many playing styles and racquets. To make a long story short, as a racquet technologies business, we decided not to promote polyester strings for most players. That sounds silly, but why take a chance when you don’t have to!
Our success is based on helping you, the player, perform the best you can, so it does not make sense to promote something contrary to that philosophy. Probably 75% of our clients have come to us for something different, so we have a “head start.”
So why do so many players use it or want to use it?
We believe it is because they have not been exposed to alternative string materials. Some outstanding players at the pro level use it, so it must be good, and it is for about 10-11 games. Of course, manufacturers and marketers of polyester string stand to make a nice profit! It is in their best interest to promote products by adding some terminology and material to make the string less stiff.
A polyester string is deficient in power and needs to be walloped, and the harder it is hit, the stiffer it becomes, which is the problem. Developing bodies can’t tolerate that level of impact for long.
Head Boom Team L 2022
Like the Head Boom Team 2022, the Head Team L 2022 has been much anticipated!
Finally, a 107 square inch head without the ridiculous thick beam and ultra-lightweight, a legitimate “tweener”!
The Boom Team L has the highest power level assigned to recent Head racquets coming in at “900”, compared to the Boom Team at 800 and the Boom Pro at 400. If a power racquet is what you are looking for, this may be a good choice!
The Boom Team L is a slightly longer racquet at 27.35 inches. This increase in length increases the swing weight without adding weight. You can think of swing weight as “leverage.”
The Boom Team L incorporates all the newest materials and design chops of the viral Boom Pro and Boom MP.
The specifications will give you a better idea of where this racquet may fit your game.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Boom Team L 2022 |
| Reference Tension | 56 lbs - 25.4 kg |
| String | Head Reflex MLT 17 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 45.0 |
| ASPS, FlexFour | 55.0 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 46.0 |
| Racquet - In Plane Stiffness | 339.8 lbs/Inch |
| Weight, Grams | 290 |
| Weight, Ounces | 10.23 |
| Balance, mm | 353 |
| Balance, Inch | 13.90 |
| Length, Cm | 69.5 |
| Length, Inch | 27.362 |
| Head Width | 10.15 |
| Head Length | 13.25 |
| Head Area, cm2 | 679.5 |
| Head Area, Sq. Inch | 105.6 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .643 |
| Main String Grid | 7.90 |
| Cross String Grid | 10.56 |
| Density (% of head filled with string) | .792 |
| Average Cross String Space | .556 |
| Average Main String Space | .494 |
| Dynamic Tension, Kp, ERT | 31 |
| Dynamic Tension, Lbs/in | 173.39 |
| First Moment, Nm | .805 |
| Polar Moment | 331 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 313 |
| Swing Weight, Ounces | 11.04 |
| Swing Weight Calculated | 361.4 |
| Power, RDC | 53 |
| Control, RDC | 48 |
| Manueverability, RDC | 78 |
| Power, Calculated | 2139.2 |
| Head Points | -1.73 |
| Head Weight, % | 50.8% |
| Center of Percussion | 20.7 |
| Dwell Time, ms | 9.48 |
| Efective Stiffness - lbs | 26.3 |
| K, Lb/In | 144.23 |
| Recoil Weight | 129.71 |
| Twist Weight | 221.11 |
| End Weight | 97.7 |
| Tip Weight | 192.3 |
| 9 O'Clock | 93.0 |
| 3 O'Clock | 92.8 |
| Butt Cap | 103.8 |
Head Boom Team 2022…BOOM!
It is here, and I bet you heard another big BOOM recently!
The Head Boom Team 2022 has arrived and is ready for you to try! The Boom Team is a valuable addition to the Head lineup.
For years players have been asking for a 102 square inch racquet that has the “player” characteristics they wanted.
Player characteristics can mean different things to different players, but here is what the Head Boom Team 2022 has:
A fairly thin beam
A thin head cross-section
A modified box beam shaft cross-section
This racquet continues with Graphene and fresh Auxetic material that has been popular in the Boom Pro and Boom MP!
All specifications are in the chart below but suffice to say; this is a significant step in the right direction!
Looking at the inside of the shaft, you will notice the transitional shape from a thin box beam into a slightly thicker trapezoidal beam.
The head shape also continues with the broader upper section like the Boom Pro and Boom MP. Most “aggressive” shots are hitting the string bed in this area, so giving it more energy makes sense!
The density of the string in that area should contribute to good string life.
The first thing you notice upon pickup (first moment) is the weight distribution. While this is still a “headlight” model (see the specs below), the weight is toward the tip of the racquet.
We have had great results with the Boom Pro and Boom MP in both “retail” and full custom racquets, so, If you are considering a racquet upgrade, this one should be on your list!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Boom Team 2022 |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Head Reflex MLT 17 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 48.0 |
| ASPS, FlexFour | 64 |
| Racquet Flex, RDC | 61 - After stringing |
| Racquet Flex, FlexFour | 45.0 |
| Racquet - In Plane Stiffness | 389.6 lbs/Inch |
| Weight, Grams | 300 |
| Weight, Ounces | 10.58 |
| Balance, mm | 337 |
| Balance, Inch | 13.27 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.97 |
| Head Length | 13.065 |
| Head Area, cm2 | 659.7 |
| Head Area, Sq. Inch | 102.3 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .642 |
| Main String Grid | 7.80 |
| Cross String Grid | 10.80 |
| Density (% of head filled with string) | .845 |
| Average Cross String Space | .568 |
| Average Main String Space | .500 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .786 |
| Polar Moment | 320 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 305 |
| Swing Weight, Ounces | 10.76 |
| Swing Weight Calculated | 340.7 |
| Power, RDC | 46 |
| Control, RDC | 54 |
| Manueverability, RDC | 83 |
| Power, Calculated | 1921.4 |
| Head Points | 1.89 |
| Head Weight, % | 49.1% |
| Center of Percussion | 20.8 |
| Dwell Time, ms | 9.18 |
| Efective Stiffness - lbs | 26.9 |
| K, Lb/In | 153.85 |
| Recoil Weight | 138.76 |
| Twist Weight | 222.21 |
| End Weight | 114.3 |
| Tip Weight | 187.8 |
| 9 O'Clock | 91.5 |
| 3 O'Clock | 93.6 |
| Butt Cap | 114.8 |
Sign Up For Good Communication!
Over the past few years, telephone communication has become more frustrating due to robocalls!
I know how frustrating this can be for you because it also happens to us…so we are trying to do something about it.
We are activating a new SMS service that will allow us to communicate more quickly and efficiently. SMS is simply a text message sent to your phone instead of e-mail.
To get this to work, we need you to “opt In”! On the home page of this site are two “sigh-up” buttons, one on the right and one on the left! That is how important we believe this communication is! Two buttons!
Please join us in this new communication service to keep you informed about the “Spring Cleaning” going on now, plus other exciting things planned for the future!
We will not send you too much stuff or share your information!
Goodbye, Russell
Our Friend Russell Williams succumbed to his three (3) year battle with ALS on the 29th of March.
I include an obituary for Russell because it includes a link to support the University of Florida ALS research program.
Russell was an avid tennis player, as he was by all accounts quite good. We have forty (40) of his sixty (60) or so Babolat Pure Control racquets that he loved so much. Russell kept the racquets in top shape, so he would never consider switching!
Sophie, Russells’ daughter, is quite an accomplished tennis player and will be going to UF, where she has signed to play tennis!
Goodbye, our friend!
Barbara planted a Reed Begonia for Russell. If you are near The Leu Botanical Garden in Orlando you can find Russell’s begonia in the White Garden.
“I planted a white reed begonia in the White Garden. We will watch it grow and flower and think of all of you.”
SBS…what is it and why should we care?
We have made several posts regarding SBS, which is “String Bed Stiffness” and this is another one!
If you read this post we really need your comment(s), really!
String bed stiffness is the “feeling” when the ball hits the string on a tennis racquet. Due to the various string materials there will be “soft” and “hard” feelings. But wait, there’s more!
The string bed is made up of several strings, some longer called the Main string (M)and some shorter called the Cross string(X). Using “reference” tension each of the sets of string will be pulled at the same machine setting! It the machine is set at 50 pounds the tension head will stop pulling when it feels 50 pounds of resistance, regardless of what he tension inside the racquet head may be.
Let’s say you come into the world headquarters and we ask you what SBS you would like to have? Would you know? Probably not and not many would! We have grown up using the term “reference tension”, not SBS.
Reference tension is “number” you would ask your racquet technician to set the stringing machine tension system on. That number will probably be between 30 and 60 pounds (≈13 to 26 Kilo).
So, depending on many other variables, such as string material, string pattern, stringing machine, stringer technique, etc., you can end up with may different versions of the same “reference tension”.
A better way, and one we have been using for over thirty (30) years, is SBS but not everyone has bought into the concept, even though a qualified racquet technician will have a way to measure SBS! Maybe because it is too much trouble to figure out what your desired SBS from machine X would be from machine A! It is not!
There have been several really good SBS data collection devices but they have been difficult to use, and pricy! Not to mention gigantic!
A call to action!
So here is where you come in,
Would you purchase a SBS data collection device?
How much would you pay for such a device?
Would you prefer a mechanical device or an electronic device?
The device must be portable, that is easily carried in a racquet bag or backpack
Yes or It doesn’t matter
It must be easy to use.
If you use an SBS device would you use a racquet technician that did not know what SBS is or how to measure it?
Thank you for adding your comments to this discussion! It is important stuff!
New Head Racquet Names
There is a need for clear descriptions of tennis racquets so you, and we can make good buying decisions.
Head has applied this to the Prestige 2021 Series and it is a little confusing, maybe. So here is the information as we know it right now and according to the racquets in stock is correct:
New Head Prestige Names
You can see the entire Prestige 2021 Line-Up including additional data here
…then there was this big BOOM!
Boom Pro
The big BOOM you heard was the arrival of the new Head Boom MP and Boom Pro racquets at the World Headquarters!
Head Boom MP
This is very exciting news for those that have been waiting!
The wait is over!
For those that pre-ordered, your racquet will be prepared for you quickly. For those that have not yet tried the new Boom series…what are you waiting for?
We also offer Full Custom Boom MP and Boom Pro racquets that are built for you including longer length if desired.
Either way, we think you will be hearing more big Booms very soon!
Head Lynx Touch! Two for One?
Several weeks ago we received the first sets of Head Lynx Touch 17 gauge strings. Yesterday we received the Lynx Touch 16 gauge version and want to share the differences…numerically!
Quickly, this string is composed of two (2) separate but “combined” filaments. So, is this a monofilament or a multifilament? The numbers indicate it reacts like a monofilament as we have become familiar with it.
Head Lynx Touch
Let’s start with the 17 gauge version:
Lynx Touch 17
The area under the heavy red lines is the “stress/strain” curve and we see that this string takes 23.5mm to reach the 50-pound mark. This is just a number unless it is compared to other strings so it is neither good nor bad, right now!
You can see that the string will hold up to 149.8 pounds before it breaks. This is tensile strength and may be important when considering the amount of “notching” that can occur. The “knot” strength of this version is 132.4 pounds.
Now let’s look at the 16 gauge version:
Lynx Touch 16
The difference is subtle. The 16 gauge version is a little stiffer (expected) and a little stronger in tension (also expected). The “knot” strength of this version is 133.6 pounds.
What is interesting is the “grouping” of the stress/strain cycles on both strings. They indicate a good elasticity. The closer to the “zero” point on unloading the better!
In our opinion, both versions of the string would be considered “stiff” and suitable for the player looking for a stiff but stable string as our creep test confirmed.
If you currently use stiff strings and would like better consistency this would definitely be a candidate ./
We Believe!
In addition to our commitment to full custom racquets, we also believe in racquets that have been pushed aside by newer models just because it is the thing to do each year!
Of course, there can be material and design changes to racquets that make them desirable and that is always a good thing but maybe not every year! Our experience has been that a typical consumer will use a racquet for about three (3) years. But we also know that there are those players that want the very latest of everything!
We know the Head Speed Graphene Touch is an extraordinary tennis racquet! The shared hole string pattern was around for a short time but it is a good pattern…so we have some of those!
The Head Prestige Tour Graphene 360+ is another incredible tennis racquet that should not be overlooked even though the Auxetic Prestige series is here. The Prestige Tour features a 99 square inch head size with an 18×19 string pattern. This is a real “players” racquet, to use the common descriptive, although anyone can play with this racquet. We have these!
The Yonex V-Core without the VDM is another example of a good racquet being replaced before its time, and the same goes for the V-Core Pro 97 and 100! Some players prefer the feedback of the non-VDM racquets. We have those.
The previous version of the Wilson Ultra 100 is preferred by some due to the grip pallet configuration and construction.
So what is the point, here?
Very simply it is to let everyone know that there is life after new models by opting for an older model, and, letting those that prefer previous models know that some are available. These racquets will not be “dumped”, they are too good for that!
Of course, there are not many of the “special” racquets so use the “Easy Order” tab to let us know you are thinking about one or more!
Do You Need Something Special – Update
Happy New Year!
We have begun to receive additional full custom racquets and components so this update will let you know what is available now.
Full Custom Racquet Components
For 2022 we have added:
Head Prestige Pro (Auxetic) 98, Thin beam: 21, 20, 20mm, String Pattern: 18×20
Head Boom Pro (Auxetic) 98, Thin beam: 22mm, String Pattern: 16×19
Head Boom MP (Auxetic) 100, Thinish beam: 21, 24, 23.5mm, String Pattern: 16×19
Head Extreme Tour (big picture above) 98, Thin beam: 21, 23, 22mm, String Pattern: 16×19
Head Extreme MP (360+) 100, Thinish beam: 23, 26, 21mm, String Pattern: 16×19
Head Gravity Pro (hot lava/teal)(360+) 100, Thin beam: 20mm, String Pattern: 18×20
*Head Prestige Mid (Graphene Touch), 93, Thin beam: 20mm, String Pattern: 16×19
Head Calfskin Leather Grip
-
- Boom
These are limited in quantity and require complete customization and assembly to create a full custom racquet for you. If you are interested please let us know so we can begin the specification conversation. We have designed an “order” format however it does not allow for the conversation necessary to create your racquet, so…
Use the “Easy Order” tab to get started.
*One Remaining
Do You Need Something Special?
Full Custom Racquet Components
We have a few “full custom” racquets remaining and when these are gone there will not be any more until later in 2022!
So, if you are interested in a “special” racquet for yourself or a tennis player you like, now is the time!
We have Head Extreme Tour, Head Extreme MP, Gravity Pro, and Head Speed MP in very limited numbers. These racquets can be configured in lengths up to 27.75 inches, in any grip size from 1/4 to 5/8 ( 2 to 5), and any weight and swing weight. Either leather or synthetic grips are available.
Of course, custom stringing can be added. All orders must be received by December 13th if you need your full custom racquet for a gift.
Please use the Easy Order tab on this site if you have any questions or want to place your order. You may text us at 407.491.4755
What’s The Difference?
As tennis players, you must constantly ask “what’s the difference” when it comes to tennis racquets and string! Well, as racquet technicians we ask the same questions!
This post is intended to showcase the differences of string in testing, not playing, however, some of the data may be noticeable to the player in certain situations.
What this graph shows us, in addition to our trying to save a tree by printing on the back of previously used paper, is that each of these stings will provide almost the same performance. This is indicated by the curve and how closely related the strings are.
Tensile Strength Comparison
The differences you do see here can be attributed to the gauge, or diameter, of the string, with the largest diameter (Tour Bite) having the highest tensile strength. Down in the “hitting” displacement range (way below the 39.9mm!), there is very little difference.
The tensile strength can be a factor as the string begins to “notch” or otherwise come apart. Each of the strings in this graph is monofilament so notching would be the failure mode in a racquet.
Head Prestige Pro 2021
This years Head Prestige Pro is last years Prestige MP. This name change was made to synchronize all the 18×20 string patterns as the “Pro” model…I think!
So, what’s in a name? A thin beam, heavy (sort of), 18×20 pattern, players racquet, that’s what! The Prestige Pro also includes the new Auxetic material and construction for a refined feel.
For some reason Head Prestige racquets have been called “stiff” by some and this is certainly not the case and never has been. This racquet is not stiff! As with any racquet the string selection can have a huge effect on “stiffness” so take a look at the effective stiffness!
I believe this is going to be a “control freaks” racquet! This racquet could also be a baseliners dream come true. The weight will drive through the ball and the swing weight will allow for some last nano-second stroke adjustments.
Take at look at the data below then go to the Prestige 2021 Comparative Data post to see all the models in one place.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Prestige Pro 2021 |
| Reference Tension | 52 lbs - 23.6 kg |
| String | Head Reflex MLT 17 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 53.0 |
| ASPS, FlexFour | 62.5 |
| Racquet Flex, RDC | 58 - After stringing |
| Racquet Flex, FlexFour | 36.0 |
| Racquet - In Plane Stiffness | 326.1 lbs/Inch |
| Weight, Grams | 342 |
| Weight, Ounces | 12.06 |
| Balance, mm | 318 |
| Balance, Inch | 12.52 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.48 |
| Head Length | 13.06 |
| Head Area, cm2 | 627.4 |
| Head Area, Sq. Inch | 97.2 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .653 |
| Main String Grid | 7.56 |
| Cross String Grid | 10.24 |
| Density (% of head filled with string) | .791 |
| Average Cross String Space | .513 |
| Average Main String Space | .417 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .832 |
| Polar Moment | 333 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 318 |
| Swing Weight, Ounces | 11.22 |
| Swing Weight Calculated | 345.8 |
| Power, RDC | 45 |
| Control, RDC | 56 |
| Manueverability, RDC | 75 |
| Power, Calculated | 1811.5 |
| Head Points | 7.87 |
| Head Weight, % | 46.4% |
| Center of Percussion | 20.7 |
| Dwell Time, ms | 8.74 |
| Efective Stiffness - lbs | 27.7 |
| K, Lb/In | 169.87 |
| Recoil Weight | 157.84 |
| Twist Weight | 230.87 |
| End Weight | 143.2 |
| Tip Weight | 198.9 |
| 9 O'Clock | 102.8 |
| 3 O'Clock | 100.3 |
| Butt Cap | 140.3 |
Head Prestige 2021 Series Comparative Data
Jumping back and forth between reviews and data is not fun nor is it efficient so we have been posting comparative data. Now all the important stuff is in one place.
All of the data is based on a “play ready” racquet. That means an overgrip and vibration damper, and unless otherwise noted…string!
As you are looking at the data try to determine which numbers mean the most to you and how you could use them. For example, the Pro has an overall weight of 342 with a swing weight 318. How does that compare to the MP?
Keep in mind that weight and swing weight can increased but not easily decreased. No, making the racquet more “head light” statically does not reduce the swing weight as recorded on testing devices that grab the racquet 10cm from the end! That is why static balance (CG) should not be used as a performance metric.
Click here to see the data!
Head Prestige Tour 2021
This racquet has the potential to be the hottest new Prestige in a long time. The “Tour” series is not new to the Prestige line but this one has some differences that are meaningful, we think!
This new Tour is a 16×19 string pattern inserted into a 95 square inch hitting area! Compare that to the previous Tour with a 18×19 string pattern in a 99 square inch head(now the new Prestige MP)…so you can see where this one is headed!
Also included in the Prestige Tour is the Auxetic material and construction that is intended to provide a better feeling impact and maybe a little more “energy”. The shaft has a slightly different geometry and is a little shorter than some other models, however, the graphics indicate the shaft is “elongated”.
The “box” beam is a relatively constant 22mm from start to finish and is beautifully done in matt black transitioning into the Prestige maroon.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Prestige Tour 2021 |
| Reference Tension | 53 lbs - 24.0 kg |
| String | Victrex 7718 (PEEK) |
| Machine Used | True Tension Professional |
| ASPS, RDC | 50.0 |
| ASPS, FlexFour | 63.5 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 42.5 |
| Racquet - In Plane Stiffness | 384.6 lbs/Inch |
| Weight, Grams | 336 |
| Weight, Ounces | 11.85 |
| Balance, mm | 326 |
| Balance, Inch | 12.83 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.406 |
| Head Length | 12.78 |
| Head Area, cm2 | 608.9 |
| Head Area, Sq. Inch | 94.4 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .620 |
| Main String Grid | 7.20 |
| Cross String Grid | 9.125 |
| Density (% of head filled with string) | .695 |
| Average Cross String Space | .464 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.16 |
| First Moment, Nm | .844 |
| Polar Moment | 347 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 331 |
| Swing Weight, Ounces | 11.68 |
| Swing Weight Calculated | 357.1 |
| Power, RDC | 53 |
| Control, RDC | 47 |
| Manueverability, RDC | 66 |
| Power, Calculated | 1968.0 |
| Head Points | 5.20 |
| Head Weight, % | 47.6% |
| Center of Percussion | 21.1 |
| Dwell Time, ms | 9.00 |
| Efective Stiffness - lbs | 27.9 |
| K, Lb/In | 160.26 |
| Recoil Weight | 161.61 |
| Twist Weight | 223.59 |
| End Weight | 136.8 |
| Tip Weight | 200.6 |
| 9 O'Clock | 99.5 |
| 3 O'Clock | 101.4 |
| Butt Cap | 134.9 |
Head Boom MP 2022
Head has introduced a brand new racquet! So, you say, what’s new about that they do it every year! Yes, but this is a different racquet!
This is the Boom!
In all the years we have been dealing with Head it has become clear that they are not averse to making new things…instead of drastically changing old things.
The Boom is available in a Pro version and a MP version, with the Pro version being a little heavier.
So the Boom, which will be available in January of 2022, (pre order now!) is a new racquet and it is not shy about it!
The head shape is a little different, the shaft is a little different, and the Auxetic material and construction is a little different and all these “littles” add up to a totally different hitting experience!
The shaft transitions from a common box to a trapezoid as it junctions with the yoke (which is the Auxetic area, don’t forget)
The 24mm beam (actually 22, 24.4, 23.3) is a solid choice for advancing players offering just the right amount of stiffness for a little extra “punch”.
We believe the recoil weight could be higher and that is easily accomplished when wanted.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Boom MP 2022 |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Tecnifibre BiPhase 124 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 55.0 |
| ASPS, FlexFour | 64.0 |
| Racquet Flex, RDC | 62 - After stringing |
| Racquet Flex, FlexFour | 42.0 |
| Racquet - In Plane Stiffness | 344.8 lbs/Inch |
| Weight, Grams | 320 |
| Weight, Ounces | 11.29 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.83 |
| Head Length | 12.84 |
| Head Area, cm2 | 639.4 |
| Head Area, Sq. Inch | 99.1 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .645 |
| Main String Grid | 7.61 |
| Cross String Grid | 10.68 |
| Density (% of head filled with string) | .774 |
| Average Cross String Space | .475 |
| Average Main String Space | .562 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.7 |
| First Moment, Nm | .807 |
| Polar Moment | 325 |
| Torsional Stability | 13 |
| Swing Weight, Kg/cm2 | 312 |
| Swing Weight, Ounces | 11.01 |
| Swing Weight Calculated | 342.2 |
| Power, RDC | 45 |
| Control, RDC | 56 |
| Manueverability, RDC | 79 |
| Power, Calculated | 1936.2 |
| Head Points | 5.04 |
| Head Weight, % | 47.7% |
| Center of Percussion | 20.80 |
| Dwell Time, ms | 8.58 |
| Efective Stiffness - lbs | 29.1 |
| K, Lb/In | 176.26 |
| Recoil Weight | 149.42 |
| Twist Weight | 231.14 |
| End Weight | 127.9 |
| Tip Weight | 191.8 |
| 9 O'Clock | 96.5 |
| 3 O'Clock | 96.1 |
| Butt Cap | 126.8 |
Head Prestige MP 2021 Series
OK, here comes another racquet review!
You know our reviews are “numbers” based, not hitter based because we just like numbers! Hitters are Important but to get the most meaningful data from a racquet requires numbers. These numbers can then be applied to the feedback of the hitter.
The new Head Prestige MP 2021 is a 99 square inch head with the 18×19 string pattern so common in player style racquets. This combination may “scare off” some users but that would be a mistake in our opinion.
As you would expect this racquet is a thin box beam box design which creates an in plane stiffness of 384.6 pounds, which can be used to create a very friendly string bed stiffness. Take a look at the “effective stiffness” and you will see what we mean!
In addition to the nice in plane stiffness this racquet uses Head’s new Auxetic construction in the throat which is designed for comfort and control from each hit by allowing the throat to “expand 
and contract” a little.
The bright red color of last years Prestige series has been replaced with a “matt” graphite transitioning into the classic Prestige maroon aroun
d the head of the racquet making this a classic in its own right!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Prestige MP 2021 |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Victrex 7718 (PEEK) |
| Machine Used | True Tension Professional |
| ASPS, RDC | 54 |
| ASPS, FlexFour | 66.0 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 41.0 |
| Racquet - In Plane Stiffness | 384.6 lbs/Inch |
| Weight, Grams | 332 |
| Weight, Ounces | 11.71 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.551 |
| Head Length | 13.13 |
| Head Area, cm2 | 635.4 |
| Head Area, Sq. Inch | 98.5 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .689 |
| Main String Grid | 8.00 |
| Cross String Grid | 10.10 |
| Density (% of head filled with string) | .727 |
| Average Cross String Space | .529 |
| Average Main String Space | .396 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.7 |
| First Moment, Nm | .837 |
| Polar Moment | 343 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 326 |
| Swing Weight, Ounces | 11.50 |
| Swing Weight Calculated | 355.0 |
| Power, RDC | 49 |
| Control, RDC | 52 |
| Manueverability, RDC | 69 |
| Power, Calculated | 2042.9 |
| Head Points | 5.04 |
| Head Weight, % | 47.7% |
| Center of Percussion | 21.016 |
| Dwell Time, ms | 8.66 |
| Efective Stiffness - lbs | 29.1 |
| K, Lb/In | 173.08 |
| Recoil Weight | 157.3 |
| Twist Weight | 227.24 |
| End Weight | 133.1 |
| Tip Weight | 200.8 |
| 9 O'Clock | 101.3 |
| 3 O'Clock | 98.9 |
| Butt Cap | 131.3 |
What Can Pictures Tell Us About String?
It is said that “a picture is worth a thousand words,” which may be true as long as the picture tells a story.
This story is about natural gut string, and the pictures will show what we can achieve, informationally, with our testing equipment. The two (2) strings are Babolat VS Touch 17 and Luxilon Natural Gut 125.
Our Questron software scales the images to suit the data so the graphs will not be the same size.
Babolat VS Touch 17
Our testing loads the string from 0 pounds force to 50 pounds and back to zero then up to 50 pounds three (3) times. This is the “stress/strain” curve. Fifty (50) pounds is arbitrary and because we are using the same methodology for all string materials it is a good number. The closer these lines are together the better.
The farther it takes to reach 50 pounds the “higher elongation” the string is. In this case it is about 44mm.
The important property of this string is the linearity! That is the “straightness” of the line from beginning to end. This indicates predictability, stability, and consistency.
This picture tells us the tensile strength and the knot strength. In this case the knot strength is 52.3 pounds and takes a stretch to very close to 60mm before failure.
Luxilon Natural Gut 125
What is, probably, the first thing you notice about this “picture”? Could it be the squiggly lines? What could be causing this?
We believe it is the “break-in period” players associate with Luxilon gut! We have heard it from the players but have not been able to “see” it! It could be the bonding agents realigning as the load is applied.
You will notice a couple of things: the similarity of the “stress/strain” curve and the displacement to “knot strength” of the two strings. This string will feel a little less “soft” than the Babolat VS Touch 17. The linearity is quite good up to failure.
So, based on these pictures, could you make a recommendation? If so, let us hear them!
And The Winner Is…
The winner is Tecnifibre MultiFeel 17!
This string, MultiFeel, is a very “soft” polyurethane bonded construction that offers playability and a good value!
Tecnifibre MultiFeel !7 Gauge
This graph shows the high elongation and nice elasticity of this string. The fairly linear slope up to failure would indicate some consistency of shot all the way up to breakage!
The knot strength is pretty good for a thin multifilament and we can say from experience that the know is going to be fine when property “tightened” and large enough to not slip bak into the grommet barrel.
If you are considering a multifilament this would be a good one to try!
Celebrity Visitors!
The World Headquarters of Racquet Quest, LLC was happy to welcome Randy St. Pierre and Henry Hamels for a visit!
Randy is a member of the Dunlop Stringing Team and is from the UK and Henry is the principal of String MD in Florida! Randy has been stringing racquets for quite a while and is always a source of good information…and he bought lunch!
Randy & Henry
Randy lives in a beautiful part of England so we are all invited to his house when the weather is better…is that right Randy?
Randy remembers stringing for a young player named Emma at a tournament in Nottingham when young Emma was in the 300’s world wide! Look at her now! Was it Randy or something else? I wonder!
Anyway it was great fun having these guys here and they are welcome anytime as are all of you reading this!
And the winner is…Head FXP 17
Head FXP is a string that seems to be largely overlooked and I am surprised after seeing the results of the installation and testing!
| String Name | Category | Gauge | Ultimate Tensile Strength/Lbs | Knot Strength/Lbs | Country of Origin |
|---|---|---|---|---|---|
| Head FXP | Multifilament - Nylon | 17 | 165.9 | 93.4 | Japan |
Both the tensile strength and knot strength are exceptional and the graph shows that this string is very “elastic” which is a good thing for tennis racquet string but sometimes just not considered.
Head FXP 17
The area under the solid red lines is considered a stress-strain curve and indicates the “elasticity” of string by how close the lines fit from 0 to 50 three (3) times. A perfectly elastic material would be one line even though it went through three (3) cycles. What you see here is quite good and one of the reasons it is the winner!
And the winner is…overview
Racquet Quest is going to add a “winner” of the week to our website as a way to develop a fun way to look at string!
Each week we will select a string that has exhibited outstanding properties from one of five (5) major categories:
-
- Synthetic Gut
- Mulit-filamanet
Nylon
PEEK - Natural gut
- PEEK Monofilament
- Polyester Monofilament
The winning string must have been installed in the most recent week either in a client or demo racquet.
We will include as much information as possible including graphs and the country of origin.
We will try to post “And the Winner is…” on Friday so take look!
Our Favorite String
A frequently asked question by our clients at the World Headquarters of Racquet Quest, LLC is “what is your favorite string?”
I am going to tell you what it is, and tell you why it is, and why, I believe, it should be your favorite string as well!
VS Team v VS Team
It should come as no surprise that natural gut is our favorite string! Well, of course, you say! It is probably everyones favorite but it is way too expensive for most recreational players! You are correct that natural gut is everyones “favorite” string, however, you may not be correct about it being too “expensive” for recreational players!
What follows is predicated on the belief that “performance” is the primary factor in selecting a string.
On the positive side:
- Natural gut plays better longer than any other material.
- Natural gut is more stable than most string materials.
- Natural gut is more forgiving (comfort) than most other materials.
- Natural gut is more eco-friendly than other materials.
- Natural gut is a good hybrid component.
On the not so positive side:
- Natural gut is expensive @ $70.00 to $75.00 (installed).
- Natural gut is more expensive than other materials.
- Making natural gut string is very labor intensive.
- Making high quality natural gut is limited to a “few” major manufacturers.
- Natural gut can be affected by moisture.
And, how do you quantify “plays better”, anyway? Some players are fine with string that has long since offered any performance! Some strings have a “play”life of a couple of hours! So, the player must decide on what is important.
But, if you ask us, natural gut is our favorite string!
String Evaluation Program
Racquet Quest, LLC has for years been doing the extensive evaluation of racquets and string for the benefit of our client’s customization requirements.
Now we are making this evaluation “program” available to anyone that wants to dig deeper into the workings of the string in the racquet!
This is serious stuff and requires significant resources but it is worth it!
Please contact us of you would like to take advantage of our evaluation program!
Prince Vortex 300
The new Prince Vortex design is a new offering of an older string pattern with 14 main strings and 21 cross strings in a variable taper beam…whew! You can see by the throat design that the main strings are longer that a conventional throat design. The longer the main strings the more energy they can return…sort of, and in some cases!
Vortex 300
The beam starts at the grip with a strong 25mm then tapers into a 23mm at the throat and then back to 25mm at the tip. Do not let the beam dimensions fool you! The RDC flex of 59 after stringing is quite acceptable for most every player style.
We have been taking coefficient of friction (COF) data for years but have not included it this review format, until now. The 14×21 string pattern is unique enough that it is worth including. You will see the numbers on the review specs so we won’t go into them now, however the numbers are interesting.
The 14 main strings contribute to a very “open” area right about where most extreme “spin” shots are hit according to our data of string failure positions.
The frame geometry is sort of “Aero” like. The shaft is trapezoidal that transitions into a “reverse” trapezoid around the head. It makes the racquet look stiffer than it is!
Take a look at the specs then pick up a demo to see what the numbers mean to you!
| Manufacturer | Prince |
|---|---|
| Racquet Model | Prince Vortex 300 |
| Reference Tension | 56 lbs - 25.4kg |
| String | Victrex 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 45 |
| ASPS, FlexFour | 58.5 |
| Racquet Flex, RDC | 59 - After stringing |
| Racquet Flex, FlexFour | 40.0 |
| Racquet - In Plane Stiffness | 526.3 lbs/Inch |
| Weight, Grams | 322 |
| Weight, Ounces | 11.36 |
| Balance, mm | 320 |
| Balance, Inch | 12.60 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.94 |
| Head Length | 12.94 |
| Head Area, cm2 | 652 |
| Head Area, Sq. Inch | 101.1 |
| Number of Main Strings | 14 |
| Number of Cross Strings | 21 |
| Ratio Cross/Mains | .512 |
| Main String Grid | 7.30 |
| Cross String Grid | 9.50 |
| Density (% of head filled with string) | .686 |
| Average Cross String Space | .452 |
| Average Main String Space | .521 |
| Dynamic Tension, Kp, ERT | 32 |
| Dynamic Tension, Lbs/in | 176.98 |
| First Moment, Nm | .790 |
| Polar Moment | 336 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 319 |
| Swing Weight, Ounces | 11.25 |
| Swing Weight Calculated | 329.7 |
| Power, RDC | 47 |
| Control, RDC | 52 |
| Manueverability, RDC | 74 |
| Power, Calculated | 1921.1 |
| Head Points | 7.24 |
| Head Weight, % | 46.6 |
| Center of Percussion | 21.7 |
| Dwell Time, ms | 9.48 |
| Efective Stiffness - lbs | 30.2 |
| K, Lb/In | 144.23 |
| Recoil Weight | 165.41 |
| Twist Weight | 237.56 |
| End Weight | 134.5 |
| Tip Weight | 189.0 |
| 9 O'Clock | 96.2 |
| 3 O'Clock | 96.1 |
| Butt Cap | 131.4 |
| Coefficient of Friction: M | .400 |
| Coefficient of Friction: X | .262 |
Prince RipStick 300
I am not saying the is not a serious tennis racquet but the first descriptor that come to mind is “fun”! And who does not want to have a little fun while playing tennis, huh?
RipStick 300
This is one of the remaining racquets with the “O” Port technology which is very large string openings instead of small grommet holes. The design allows for much more string movement and the 16×18 string bed helps! The “O” Ports create an effective head size of 105 in a racquet that measures 100 square inches.
But, just look at those colors! I think they are awesome!
This is a constant taper beam starting at 22.5mm going up to 27mm so if you are “thin beam” person you may hesitate to hit with this racquet, but we think you may be missing out!
If you just look at the racquet you may think it to be quite stiff. That is not the case! With an RDC stiffness of 62 after stringing we arrive at an effective stiffness of 30.2 with this string setup. Not bad!
Take a look at the specs then come get the demo and see what all these numbers mean to you!
| Manufacturer | Prince |
|---|---|
| Racquet Model | Prince RipStick 300 |
| Reference Tension | 60 lbs - 27.2kg |
| String | Prince Premier 16 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 59 |
| ASPS, FlexFour | 64.5 |
| Racquet Flex, RDC | 62 - After stringing |
| Racquet Flex, FlexFour | 46.6 |
| Racquet - In Plane Stiffness | 504.2 lbs/Inch |
| Weight, Grams | 328 |
| Weight, Ounces | 11.57 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 10.00 |
| Head Length | 12.87 |
| Head Area, cm2 | 645 |
| Head Area, Sq. Inch | 100.1 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 18 |
| Ratio Cross/Mains | .694 |
| Main String Grid | 7.56 |
| Cross String Grid | 9.12 |
| Density (% of head filled with string) | .679 |
| Average Cross String Space | .531 |
| Average Main String Space | .469 |
| Dynamic Tension, Kp, ERT | 36 |
| Dynamic Tension, Lbs/in | 201.35 |
| First Moment, Nm | .814 |
| Polar Moment | 337 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 320 |
| Swing Weight, Ounces | 11.29 |
| Swing Weight Calculated | 342.2 |
| Power, RDC | 43 |
| Control, RDC | 58 |
| Manueverability, RDC | 73 |
| Power, Calculated | 2095.5 |
| Head Points | 6.14 |
| Head Weight, % | 47.2 |
| Center of Percussion | 21.2 |
| Dwell Time, ms | 8.28 |
| Efective Stiffness - lbs | 30.2 |
| K, Lb/In | 189.10 |
| Recoil Weight | 159.2 |
| Twist Weight | 256.05 |
| End Weight | 134.9 |
| Tip Weight | 194.5 |
| 9 O'Clock | 100.8 |
| 3 O'Clock | 97.3 |
| Butt Cap | 130.2 |
New KT Tape Products!
KT Tape is probably the most recognized gear any athlete can wear! You see it on many world-class athletes typically placed where they may be experiencing discomfort or want to reduce the possibility of such!
Racquet Quest has added three (3) new KT Tape products we believe are essential to better performance.
The new Wave:
- Clinically proven and FDA cleared device for relief of chronic musculoskeletal pain
- 250 hours of battery life for consecutive or intermittent use
- Sensation-free electromagnetic pulses that are safe and effective
- Flexible loop is easy to place
- Water resistant, safe to wear during regular physical activity and during sweating
The new Chafe Safe:
- Protects friction-prone areas from blisters & hot spots for up to 24 hours
- Sweat & water resistant
- Mess-free, non-sticky, & smooth application
- No clogging of pores
The new Anti Blister tape:
- Designed to help prevent athlete blister, chafing, and hot spot formation*
- Ultra-durable, flexible, and breathable synthetic fabric
- Easily conforms to skin and extremely thin to minimize friction
- Precut 3.5” strips for convenient use in most common treatment areas
- KT Tape is proud to provide the KT PERFORMANCE + and KT RECOVERY + product lines, supporting athletes of all levels and helping them to perform at their best. Train longer, finish stronger
These important products contribute to Racquet Quest’s commitment to keeping our clients playing comfortably forever!
If you are new to KT Tape just click here and you will go to the very comprehensive “how to” page!
World Headquarters Update
The World Headquarters of Racquet Quest is very happy to present the latest addition to our headquarters!
My daughter and her family that live in Columbus presented me with the iconic Columbus, Indiana “C” bike rack recently! This bike rack is something I have wanted for a while!
In case you don’t know, Columbus, Indiana is well known for the many architectural buildings and pieces by many very famous people!
World Headquarters
The bike was donated by Davids Cycle World and painted by me! A very close inspection of the paint job should be avoided!
Anyway, we are very happy to have this addition to the World Headquarters!
Thank you!
And now for something completely different!
It is not often we get to do something completely different but this is that time!
Everyone loves to see what the very latest racquets are going to look like and how they will play but what about taking a look back, not forward!
This racquet review is going way back! I am not sure when this racquet was made but suffice it to say it was a while ago. I will guess that it is over sixty (60) years old.
Well, OK! What is it?
It is a Wright & Ditson Olympic!
Wright & Ditson Olympic
This is a beautiful 68 square inch wooden racquet. The wooden grip pallet is wrapped with a very wide piece of perforated leather, not the slender leather used today.
The racquet has no butt cap. Or didn’t have a butt cap but now it does.
Pay particular attention to the weight of this racquet, and the stiffness!
Many of the current racquets will be in the 315-gram range with an RDC flex of 55+.
When we received it the condition was not great but it was straight and worth renovating. We all know how beautiful some wooden racquets can be so let’s get to the specifications.
| Manufacturer | Wright & Ditson |
|---|---|
| Racquet Model | Wright & Ditson Olympic |
| Reference Tension | 45lbs/20.4kg |
| String | Head Synthethic 17 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 36 |
| ASPS, FlexFour | 50 |
| Racquet Flex, RDC | 12 - After stringing |
| Racquet Flex, FlexFour | 27.0 |
| Racquet - In Plane Stiffness | 500.0 lbs/Inch |
| Weight, Grams | 401.0 |
| Weight, Ounces | 14.14 |
| Balance, mm | 307 |
| Balance, Inch | 12.09 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 8.13 |
| Head Length | 10.8 |
| Head Area, cm2 | 444.6 |
| Head Area, Sq. Inch | 68.9 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .677 |
| Main String Grid | 7.00 |
| Cross String Grid | 8.30 |
| Density (% of head filled with string) | .843 |
| Average Cross String Space | .415 |
| Average Main String Space | .389 |
| Dynamic Tension, Kp, ERT | 30 |
| Dynamic Tension, Lbs/in | 167.8 |
| First Moment, Nm | .932 |
| Polar Moment | 368 |
| Torsional Stability | 9 |
| Swing Weight, Kg/cm2 | 359 |
| Swing Weight, Ounces | 12.66 |
| Swing Weight Calculated | 377.9 |
| Power, RDC | 0 |
| Control, RDC | 100 |
| Manueverability, RDC | 47 |
| Power, Calculated | 296.9 |
| Head Points | 11.02 |
| Head Weight, % | 44.9% |
| Center of Percussion | 21.0 |
| Dwell Time, ms | 10.6 |
| Efective Stiffness - lbs | 9.0 |
| K, Lb/In | 115.4 |
| Recoil Weight | 189.8 |
| Twist Weight | 203.8 |
| End Weight | 174.9 |
| Tip Weight | 225.0 |
| 9 O'Clock | 115.9 |
| 3 O'Clock | 115.0 |
| Butt Cap | 168.9 |
In a string does color matter?
Of course color matters! Brands have made history on color! Prince Green, Head Orange, Babolat Blue, for racquets but what about string?
Sure, again! Luxilon Silver, Babolat Black, Solinco Green, Victrex Putty…what? Which of these monofilament strings do not have any color pigment?
If you guessed the Victrex you would be correct. But why not? The natural color of the polymer is probably the very strongest a string can be, however, without color they would not be at all interesting or recognizable! The natural Victrex color is typically what we use when evaluating the string because it is visually different.
Victrex does make strings with black-pigment, but this post is about the difference pigmentation can make in a string. In a previous post some years go we determined that color had very little affect on string properties and this evaluation shows pretty much the same result in a different format.
You can see by this graph there is very little difference between the two Volkl V-Star strings. In fact it would be safe to say the strings are identical.
Head Speed Pro Black
As you probably know by now Novak Djokovic plays with a version of the Head Speed but in black, not black and white! So it was only a matter of time until the all-black Speed Pro became available.
Until now we only had the black and white Speed Pro demo but now we have the black one!
This review will include the white and black version of the Speed and we will include a comparison to the Wilson Blade Pro!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360 + Speed Pro Black |
| Reference Tension | 54 lbs - 24.5 kg |
| String | Head Reflex MLT |
| Machine Used | True Tension Professional |
| ASPS, RDC | 56 |
| ASPS, FlexFour | 66.5 |
| Racquet Flex, RDC | 57 - After stringing |
| Racquet Flex, FlexFour | 50.5 |
| Racquet - In Plane Stiffness | 325.2 lbs/Inch |
| Weight, Grams | 334 |
| Weight, Ounces | 11.78 |
| Balance, mm | 325 |
| Balance, Inch | 12.80 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.618 |
| Head Length | 13.10 |
| Head Area, cm2 | 636.1 |
| Head Area, Sq. Inch | 98.6 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .662 |
| Main String Grid | 7.565 |
| Cross String Grid | 10.30 |
| Density (% of head filled with string) | .7735 |
| Average Cross String Space | .513 |
| Average Main String Space | .413 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.7 |
| First Moment, Nm | .836 |
| Polar Moment | 341 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 326 |
| Swing Weight, Ounces | 11.50 |
| Swing Weight Calculated | 352.8 |
| Power, RDC | 42 |
| Control, RDC | 59 |
| Manueverability, RDC | 69 |
| Power, Calculated | 1832.1 |
| Head Points | 5.51 |
| Head Weight, % | 47.0% |
| Center of Percussion | 21.016 |
| Dwell Time, ms | 8.502 |
| Efective Stiffness - lbs | 28.25 |
| K, Lb/In | 179.49 |
| Recoil Weight | 159.3 |
| Twist Weight | 231.4 |
| End Weight | 134.5 |
| Tip Weight | 198.0 |
| 9 O'Clock | 99.0 |
| 3 O'Clock | 99.6 |
| Butt Cap | 134.0 |
And now for the white and black version:
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Speed Pro |
| Reference Tension | 56 lbs - 25.4 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 55 |
| ASPS, FlexFour | 66.5 |
| Racquet Flex, RDC | 60 - After stringing |
| Racquet Flex, FlexFour | 43 |
| Weight, Grams | 327 |
| Weight, Ounces | 11.53 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.5 |
| Length, Inch | 26.97 |
| Head Width | 9.69 |
| Head Length | 13.06 |
| Head Area, cm2 | 641.2 |
| Head Area, Sq. Inch | 99.4 |
| Beam Width, mm, Shaft, Center, Tip | 23, 23, 23 |
| In Plane Stiffness, Pounds/In | 335.2 Lbs/In. |
| In Plane Stiffness, Kg/cm | 152.0 Kg/cm |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .668 |
| Main String Grid | 7.62 |
| Cross String Grid | 10.37 |
| Density (% of head filled with string) | .768 |
| Average Cross String Space | .513 |
| Average Main String Space | .414 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .812 |
| Polar Moment | 336 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 320 |
| Swing Weight, Ounces | 11.29 |
| Swing Weight Calculated | 341.2 |
| Power, RDC | 45 |
| Control, RDC | 57 |
| Manueverability, RDC | 73 |
| Power, Calculated | 1908.2 |
| Head Points | 6.14 (negative = head heavy |
| Head Weight, % | 47.2% |
| Center of Percussion | 21.2 |
| Dwell Time, ms, No Swing | 8.58 |
| Efective Stiffness - lbs | 28.7 |
| K, Lb/In (SBS) RDC | 176.28 |
| Recoil Weight | 159.71 |
| Twist Weight | 229.85 |
| End Weight | 133.4 |
| Tip Weight | 192.8 |
| 9 O'Clock | 97.1 |
| 3 O'Clock | 97.5 |
| Butt Cap | 131.0 |
And now for the Wilson Blade Pro:
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Blade Pro |
| Reference Tension | 54 lbs - 23.6 k2 |
| String | ALU Power Rough |
| Machine Used | Unknown |
| ASPS, RDC | 35 |
| ASPS, FlexFour | 53 |
| Racquet Flex, RDC | 62 - After stringing |
| Racquet Flex, FlexFour | 48 |
| Racquet - In Plane Stiffness | 387.1 lbs/Inch |
| Weight, Grams | 337 |
| Weight, Ounces | 11.89 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.6 |
| Head Length | 12.80 |
| Head Area, cm2 | 623.3 |
| Head Area, Sq. Inch | 96.6 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .634 |
| Main String Grid | 7.37 |
| Cross String Grid | 10.40 |
| Density (% of head filled with string) | .7934 |
| Average Cross String Space | .547 |
| Average Main String Space | .461 |
| Dynamic Tension, Kp, ERT | 27 |
| Dynamic Tension, Lbs/in | 151.0 |
| First Moment, Nm | .850 |
| Polar Moment | 358 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 342 |
| Swing Weight, Ounces | 12.06 |
| Swing Weight Calculated | 360.35 |
| Power, RDC | 55 |
| Control, RDC | 42 |
| Manueverability, RDC | 59 |
| Power, Calculated | 2069.0 |
| Head Points | 5.04 |
| Head Weight, % | 47.07 |
| Center of Percussion | 21.535 |
| Dwell Time, ms | 10.755 |
| Efective Stiffness - lbs | 22.37 |
| K, Lb/In | 112.18 |
| Recoil Weight | 170.8 |
| Twist Weight | 234.0 |
| End Weight | 135.0 |
| Tip Weight | 202.9 |
| 9 O'Clock | 100.8 |
| 3 O'Clock | 103.7 |
| Butt Cap | 132.2 |
Pick Your Prestige!
Racquet Quest specializes in high performance tennis racquets and they don’t get more high performance than the Head Prestige models!
We recognize the attachment players have to racquets so we keep a good supply of Head Prestige racquets of all models and even a year or two of prior models.
Here is what is currently available:
| Name | Material | Model | Head Size | Grip Size | String Pattern | Quantity |
|---|---|---|---|---|---|---|
| Prestige | Graphene XT | Rev Pro | 93 | 4 | 16x19 | 1 |
| Prestige | Graphene XT | Rev Pro | 93 | 3 | 16x19 | 2 |
| Prestige | Graphene XT | MP | 98 | 4 | 18x20 | 1 |
| Prestige | Graphene XT | MP | 98 | 3 | 18x20 | 1 |
| Prestige | Graphene XT | Pro | 98 | 4 | 16x19 | 1 |
| Prestige | Graphene XT | Pro | 98 | 3 | 16x19 | 2 |
| Prestige | Graphene Touch | Pro | 95 | 2 | 16x19 | 1 |
| Prestige | Graphene Touch | Tour | 99 | 3 | 18x19 | 2 |
| Prestige | Graphene Touch | Tour | 99 | 2 | 18x19 | 1 |
| Prestige | Graphene Touch | MP | 95 | 3 | 18x20 | 1 |
Still Committed to Your Racquet!
For the past few years and certainly the past year Racquet Quest has been committed to tennis racquets and yours is included!
Hopefully the days of the “mask”are over and we can resume actually talking to each other and be understood! Of course if you prefer to wear a mask that is OK, too!
Here is what is not OK!
Not caring about your tennis racquet is not OK, and by that I mean keeping it in the best possible condition. That includes string, grip, grommet sets, overgrips and general reactions of beating it against the ground or net!
We have seen five year old racquets that look brand new and five day old racquets that are in really poor shape! One of the most damaging “strokes” in tennis is the ball pickup stroke! This is not a stroke at all but a way to keep from bending over to pick up balls!
Using the racquet head to scoop up the balls is easy and cool! It is also the quick way to ruin the bumper guard which is there to protect the Racquet from normal stroke, not pick-ups!
So, what do you do about it? The next time you consider scooping up balls with the racquet consider tapping the ball to start it bouncing or simplpy use the fingers on your hand to pick up the ball…that would be good!
Looking at the Numbers and What They Mean
The following table will shed some light on the numbers we use and hopefully shed some light on what they can mean in terms of your racquet.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Radical MP 2023 |
| Reference Tension | 55 (what you tell the stingers to set the stringing machine). This should be replaced by String Bed Stiffness (SBS) |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Professional |
| String Bed Stiffness - RDC | 53.0 Units (Babolat RDC) |
| String Bed Stiffness -FlexFour | 64.9 pounds (Flex Four) |
| String Bed Stiffness - SBS | 51.8 pounds (Racquet Quest string bed stiffness SBS Master) |
| String Bed Stiffness - ERT | 35 Kg/Cm (previously Beer's ERT1000) |
| Racquet Flex, Babolat RDC | 65 - After stringing (unstrung racquets will be slightly stiffer. Loaded from the tip) |
| Racquet Flex, FlexFour | 44.5 (Loaded from the COP) |
| Racquet - In Plane Stiffness | 379.7 lbs/Inch (stiffness across the 3 ad 9 o'clock positions of the racquet head) |
| Weight, Grams | 326 |
| Weight, Ounces | 11.50 |
| Balance, mm | 333 |
| Balance, Inch | 13.11 |
| Length, Cm | 68.57 |
| Length, Inch | 27.00 |
| Head Width | 9.63 |
| Head Length | 12.79 |
| Head Area, cm2 | 623.0 |
| Head Area, Sq. Inch | 96.7 |
| Beam Height @ Grip, mm | 21.0 (how thick the racquet is looking at the side) |
| Beam Height @ Mid, mm | 22.5 (how thick the racquet is looking at the side) |
| Beam Height @ Tip | 20.5 (how thick the racquet is looking at the side) |
| Beam Width @ Grip, mm | 12.5 (how thick the racquet is looking at the front or face view) |
| Beam Width @ Throat, mm | 11.5 (how thick the racquet is looking at the front or face view) |
| Beam Width @ Mid, mm | 12.8 (how thick the racquet is looking at the front or face view) |
| Beam Width @ Tip, mm | 12.8 (how thick the racquet is looking at the front or face view) |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .634 ( typically the natural ratio) |
| Main String Grid | 7.18 (the distance between the two outer most main strings) |
| Cross String Grid | 9.44 (the distance between the two outer most cross strings) |
| Density (% of head filled with string) | 69.6% (how much of the head area is filled with string) |
| Average Cross String Space | .494 (how far apart the strings are). The farther apart the quicker the wear. |
| Average Main String Space | .449 (how far apart the strings are). The farther apart the quicker the wear. |
| Dynamic Tension, Kp, ERT | 35 (string bed stiffness in kilos per centimeter) |
| Dynamic Tension, Lbs/in | 195.76 (DT converted to pounds per inch) |
| First Moment, Nm | .841 (sometimes called pickup weight) |
| Polar Moment | 347 (torsional weight) |
| Torsional Stability | 16 ( resistance to twisting on off center hits) |
| Swing Weight, Kg/cm2 | 331 (the dynamic weight and the most significant property) |
| Swing Weight, Ounces | 11.68 |
| Swing Weight Calculated | 361.5 (calculated from the butt end to the tip) |
| Power, RDC | 52 (property calculated by Babolat RDC) |
| Control, RDC | 49 (property calculated by Babolat RDC) |
| Manueverability, RDC | 66 (property calculated by Babolat RDC) |
| Power, Calculated | 2101.4 (calculation based on several racquet properties) |
| Head Points | 3.15 ( a point is generally consider to be .125 inches/3.18mm) |
| Head Weight, % | 48.5% |
| Center of Percussion | 21.1 (highest COR) |
| Dwell Time, ms | 8.74 (length of time the ball is in contact with the string without a swing) |
| Efective Stiffness - lbs | 29.2 ( the calculated combined stiffness of the racquet and sting bed) |
| K, Lb/In | 169.87 (string bed stiffness in pounds/inch) |
| Recoil Weight | 156.44 (resistance to twisting about the grip) |
| Twist Weight | 226.48 (resistance to twisting about the neutral axis) |
| End Weight | 126.0 (two scale system to calculate CG) |
| Tip Weight | 197.7 (two scale system to calculate CG) |
| 9 O'Clock | 105.1 (three scale system to assure symmetry) |
| 3 O'Clock | 104.7(three scale system to assure symmetry) |
| Butt Cap | 115.6 (three scale system to assure symmetry) |
| COF, Main | .416 (the stickiness of the string bed sliding the ball with the main strings) |
| COF, Cross | .388(the stickiness of the string bed sliding the ball with the cross strings) |
Correct Size Does Matter!
Grip size, in this case, does matter! However, for several years the largest grip size available has been a 4 ⅝, or just 5 for short.
This is simply the circumference of the finished grip forward of the butt cap. Of course the butt cap is of a size that will capture the butt of your hand for comfort and control.
But what happens if you need a grip size larger than 4 ⅝? In years gone by a shrink tube was applied to the current grip pallet and the size was increased accordingly. Typically only two (2) shrink tubes could be used and even then the grip facets became “rounded”.
Lucky for us, and you of course, we can now print grip pallets in any size required! The largest one so far is a 5 1/4 for a player in New York using a Babolat Pure Aero.
-
- From this to…
-
- …This!
-
- Pallet with Butt Cap
-
- Raw Shaft
-
- Previous Grip Pallet
Each printed pallet is made specifically for a racquet, not just a “one size fits all” approach due to very subtle variations in size, especially the inner shaft.
Inner Shaft
In this case the pallets were longer to accommodate large hands so the length of the racquet was increased through the use of these pallets and a printed extender.
The printed pallet must fit securely and the best way to assure the fit is to have the racquet.
Pallet with Butt Cap
What Can String Failure Tell Us – Part Deux
In Part Un we discussed the difference between shanking (mis-hit) and friction failure. It was obvious that the string was broken. But what happens when it is not so obvious?
Part Deux, this part, will examine the frictional notching failure of monofilament string and how we can be prepared for it! To further refine this discussion we will be comparing PET polyester has PEEK monofilament string. The reason is that each material while both will notch one requires more time to reach the critical dimensional decrease that is a failure!
In almost every Racquet Quest Podcast we talk about tension v string diameter and agree that once 50% of the string diameter is notched away the string is vulnerable! So a .050 (1.27mm) diameter string that has a tensile strength of 120 pounds at 50% notching will have 60 pounds of tensile strength remaining.
Notched v un notched string
This graph is a string that was broken during use. The string was removed from the racquet. The top line is the tensile strength in the area of no notching so you can see that it is pretty strong still and has stabilized due to use. That stabilization is indicated by the very tight stress/strain grouping.
However, things go sideways when the notched area of the string is put under stress. The string failed at a force of 63.8 pounds, or about 59% of the used tensile strength. Not bad!
So, notching is failure-inducing but how long it takes to create the fatal notch differs with string material. This particular set of strings had about six (6) hours of play.
In Part Trois, we will look at PEEK material under the same conditions!
What Can String Failure Tell Us?
Well, in the simplest terms, failure tells us it is time to have the request strung! However, there may be subtleties in string failure that can help us in our quest for tennis racquet performance.
Such as?
Is the failure shear related or tensile strength related? Was friction the major contributor to the failure? Where did the failure occur (on the racquet, not the court)? Was the failure during play or in the bag?
Shear-related failure is when the string breaks very near the racquet frame. This failure is called a mis-hit or shank! It is like cutting the string with a pair of scissors!
Shear Failure
Friction Failure
Friction failure is caused by just that, friction! Friction is caused by the string moving on each other. That rubbing creates friction and notches the string where it will fail.
If the racquet failed during play and it is not shear-related, the tensile strength of the string was exceeded. If a string has a tensile strength of 120 pounds and the tension is 60 pounds leaving 60 pounds to be used to hit the ball. Some big hitters can generate at least that much force on a solid forehand!
This graph shows the tensile strength of the string to be about 115 pounds. Given the movement of this string-on-string, the frictional notching can contribute to relatively early failure based on the hitters force.
This graph shows the tensile strength of the string to be about 155 pounds but it has to travel (stretches) further to reach that force.
So, you can see, with this information we can make better decisions when asked to suggest a string, or strings, for a client!
Players String Evaluation
For years we have requested player evaluation input to help us provide a comprehensive selection of quality tennis racquet string.
Our new Player String Evaluation form below makes it really quick and easy to give us your evaluation input. If Racquet Quest prepared your racquet there will be two (2) labels on the inside of the racquet shaft. One label will be your name with date, string, tension, and racquet number. The other label will be a bar code that includes the racquet number.
You can use this information when filling out the Player String Evaluation form. Thank you for your input!
Which Comes First!
We all have heard the question “which comes first the chicken or the egg”? However, my question is “Which comes first the game or the string”?
I believe they happen simultaneously. But first a quick story.
In 2005 I was attending a Head product introduction on the island of Mallorca, Spain, Yes, that one!
The product introduction was exciting but what I am going to tell you about now was even more meaningful.
The Director of one of the top US Tennis Training organizations, at that time, was there and we were discussing teaching techniques and what he said after being in this part of Europe was “we need to start teaching our players how to hit this way!” Well, “this way” was the way of low-powered strings that were popular in Europe but not so much in the US, yet.
So, it began! The players could not hit harder, like the Europeans, unless they used the same string material as the Europeans and that was very stiff and mostly PET polyester.
So, the idea was the “egg” and the string was the “chicken”, sort of! I guess the feeling was that “if Americans are going to compete we must use the same equipment”.
Now, I believe the professional game can go on about its way but otherwise, we need to consider changing the game by returning to a combination of comfort and playability.
Our history shows us that the “high performance” life span of many polyester strings is about 2-3 hours, or less, maybe about 10-12 games. We don’t believe this is quite long enough for most players. But, how do you quantify “performance”? It may be different things for different players.
There are many components to performance but what if it was associated with UTR data? Racquet Quest can track UTR numbers and make some determinations based on that data. If a UTR is stable or increasing it is a good bet that the performance of the player and equipment is OK. However, if the UTR is slipping it is a good indication that something is not working as it should…but what?
We have found that, in some cases, it is injury or discomfort, that is causing the slippage! Stop it! The following data is for a 12 month period and acquired from the UTR website. Even small positive changes are tough! But negative changes seem to have an enormous impact more quickly than positive changes!
For example:
| Player | Racquet | String | UTR1 | UTR2 | Delta |
|---|---|---|---|---|---|
| A | Head Speed | PEEK | 12.84 | 12.86 | + .02 |
| B | Babolat Pure Aero | Polyester | 10.91 | 9.56 | -1.35 |
| C | Head Radical MPA | PEEK | 4.50 | 5.61 | +1.11 |
| D | Wilson Pro Staff 97 | PEEK | 5.0 | 7.03 | +2.03 |
| E | Babolat Pure Aero | PEEK | 3.8 | 5.64 | +1.84 |
| F | Wilson Blade 98 | Polyester | 10.0 | 9.41 | -.59 |
| G | Head Radical Pro | Natural Gut | 3.7 | 5.15 | +1.45 |
Bolt 100 v2
Bolt tennis racquets have been around for a few years and we have reported on them in the past, however, the new V2 of the Bolt racquet lineup is very impressive!
If you are not at all familiar with the Bolt technology it is the “Zip Strip” that makes them unique. The “Zip Strip” is a carbon fiber component that looks like a miniature tennis racquet cross-section that fits into the sides and top that actually do the “bending” during string and racquet impact!
This “bending” can mitigate harshness associated with very stiff strings or a very stiff racquet!
Before we look at the specifications you can visit the Bolt site for more information.
| Bolt 98L, V2 | |
|---|---|
| Manufacturer | Bolt |
| Racquet Model | Bolt 100, v2 |
| Reference Tension | 57 lbs - 25.9 k |
| String: Main/Cross | Head Reflex |
| Machine Used | True Tension Pro |
| ASPS, RDC | 56 |
| ASPS, FlexFour | 64.5 |
| Racquet Flex, RDC | 64 - After stringing |
| Racquet Flex, FlexFour | 46 |
| Weight, Grams | 313 |
| Weight, Ounces | 11.06 |
| Balance, mm | 337 |
| Balance, Inch | 13.27 |
| Length, Cm | 68.5 |
| Length, Inch | 26.98 |
| Head Width | 9.589 |
| Head Length | 13.13 |
| Head Area, cm2 | 665.1 |
| Head Area, Sq. Inch | 103.1 |
| Beam Width, mm, Shaft, Center, Tip | 24.5, 24.5, 23.8 |
| In Plane Stiffness, Pounds/In | 454 Lbs/In. |
| In Plane Stiffness, Kg/cm | 178.7 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .642 |
| Main String Grid | 7.37 |
| Cross String Grid | 9.62 |
| Density (% of head filled with string) | .688 |
| Average Cross String Space | .506 |
| Average Main String Space | .461 |
| Dynamic Tension, Kp, ERT | 36 |
| Dynamic Tension, Lbs/in | 201.35 |
| First Moment, Nm | .822 |
| Polar Moment | 350 |
| Torsional Stability | 19 |
| Swing Weight, Kg/cm2 | 331 |
| Swing Weight, Ounces | 11.68 |
| Swing Weight Calculated | 356.6 |
| Power, RDC | 48 |
| Control, RDC | 53 |
| Manueverability, RDC | 66 |
| Power, Calculated | 2183.7 |
| Head Points | 1.42 (negative = head heavy) |
| Head Weight, % | 49.3% |
| Center of Percussion | 21.4 |
| Dwell Time, ms, No Swing | 8.50 |
| Effective Stiffness - lbs | 29.9 |
| K, Lb/In (SBS) RDC | 179.49 |
| Recoil Weight | 157.0 |
| Twist Weight | 234.11 |
| End Weight | 118.7 |
| Tip Weight | 196.1 |
| Total Weight | 314.8 |
| 9 O'Clock | 103.0 |
| 3 O'Clock | 98.9 |
| Butt Cap | 110.3 |
| Total Weight | 312.2 |
Friction v Tension…what wins?
We all know what friction is. It keeps our cars from sliding around, it keeps us from slipping and in general makes movement possible!
Friction also plays an important part in the string bed of your tennis racquet. Friction between the strings and the ball create friction which in turn creates rotation.
What are, however, some of the downsides of friction in the string bed during, and after, the stringing process?
Friction v Tension
For more detailed information and a graph showing the forces involved go to our membership site, GASP.network, but in the meantime this image will show the frictional forces at work!
This machine tension head will pull the string (blue) in the direction of the center of the racquet support structure instead of directly out the middle of the grommet.
It is obvious that this will create considerable friction and result in lower tension inside the grommet than outside the grommet.
The Extreme MP is Back!
The very popular Head Graphene 360+ Extreme MP is back in stock! This racquet is one of the best all-around racquets that we have seen in a while! They are hard to keep in stock!
Head Graphene 360+ Extreme MP
In addition to the stock models, we also have Extreme MP for full custom racquet set up, so whatever you want! Stock or custom!
But hurry…
Looking at the Differences
For the past fifteen (15) years or so, most string discussion centered on polyester. By now, you know our position on polyester, so we won’t go through that again right now. What we will go through right now is the difference(s) in a polyester string!
PET, polyethylene terephthalate, is the standard “material” in the better quality polyester string, so how can there be so many different versions of the same material?
Can you say “additives”? Luxilon has made it part of their brand to use acronyms for materials in each string’s description. ALU, for example, is aluminum, Timo is titanium/molybdenum, and I don’t know what 4G is.
So let’s take a look at the differences in a couple of polyester stings. Shown here are two (2) polyester strings, Luxilon ALU Power and Volkl V-Star. You can see the difference in stiffness between them, the V-Star being “softer,” but what you can’t see is the V-Star package does not say “co-polyester” but instead Co-Polymer!
Polyester? Co-Polyester? Co-Polymer?
We know “co” is two or more and “poly” is many, so how many of anything does any material have in it? We may never know and probably shouldn’t care as long as we have the presented data.
What can we see from this graph?
- ALU Power reaches 50 lbs quicker (stiffer)
- ALU Power exhibits good elasticity
- V-Star is more linear (consistency)
- V-Star has a greater tensile strength
- V-Star is softer (takes longer to reach 50 lbs)
How would a player know this by just looking a the package? I am not sure! Adding the word “soft” or “comfort” or “feel” may persuade a player to try the string, but what if a better decision could be made before spending the time and money?
Head Graphene 360+ Radical S v21
From our perspective the Radical S should be one of the most used of the Radical Series!
Head Graphene 360+ Radical S
Why? The 102 square inch head size is optimum for players looking for additional power,( and who isn’t) in a legitimate players racquet. We say “legitimate” because this racquet can be turned into any thing you want, now or in the future!
As you will see in the specifications this is not a really stiff racquet so it will be easy for many players to customize the string bed to suit current playing style with an eye toward becoming a more aggressive player, or not!
The Radical S continues with the “control pattern” and “sound grommets”. We are not totally certain what the “sound grommets” do but sound is frequency and frequency can be felt so maybe the grommets are damping out some of the higher frequencies?
Anyway, this Radical S model is a great step into the “performance” racquet arena with plenty of room to grow!
| Head Graphene 360+ Radical S v21 | |
|---|---|
| Manufacturer | Head |
| Racquet Model | Head Graphene 360+ Radical S v21 |
| Reference Tension | 55 lbs - 24.9 k |
| String: Main/Cross | Victrex 7718 |
| Machine Used | TT Professional |
| ASPS, RDC | 55 |
| ASPS, FlexFour | 61.5 |
| Racquet Flex, RDC | 61 - After stringing |
| Racquet Flex, FlexFour | 50 |
| Weight, Grams | 296 |
| Weight, Ounces | 10.44 |
| Balance, mm | 333 |
| Balance, Inch | 13.11 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.860 |
| Head Length | 13.09 |
| Head Area, cm2 | 653.9 |
| Head Area, Sq. Inch | 101.3 |
| Beam Width, mm, Shaft, Center, Tip | 22, 25, 23 |
| In Plane Stiffness, Pounds/In | 370.4 Lbs/In |
| In Plane Stiffness, Kg/cm | 66.2 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .634 |
| Main String Grid | 7.30 |
| Cross String Grid | 9.75 |
| Density (% of head filled with string) | .703 |
| Average Cross String Space | .513 |
| Average Main String Space | .449 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.8 |
| First Moment, Nm | .764 |
| Polar Moment | 320 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 303 |
| Swing Weight, Ounces | 10.69 |
| Swing Weight Calculated | 328 |
| Power, RDC | 42 |
| Control, RDC | 60 |
| Manueverability, RDC | 85 |
| Power, Calculated | 1873.1 |
| Head Points | 2.99 (negative = head heavy) |
| Head Weight, % | 48.6% |
| Center of Percussion | 21.2 |
| Dwell Time, ms, No Swing | 8.58 |
| Effective Stiffness - lbs | 28.9 |
| K, Lb/In (SBS) RDC | 176.28 |
| Recoil Weight | 144.50 |
| Twist Weight | 214.65 |
| End Weight | 113.1 |
| Tip Weight | 183.4 |
| Total Weight | 296.5 |
| 9 O'Clock | 92.1 |
| 3 O'Clock | 91.8 |
| Butt Cap | 112.2 |
| Total Weight | 296.1 |
Head Graphene 360+ Radical Series Comparative Data
Click Here to See Radical Series Comparison Data
Radical MP v21
A Close Look at Orange
The new, for 2021, Head Graphene 360+ Radical series is a radical step into colors that have always been the “mark” of the Radical Series but now it has gone even further into radicalism!
We think that is a good thing! Why mess around with just a little orange when you can go all out!
It is impossible to see the vibrancy of this orange without holding it in your hand! We invite to to hold one in your hand and even hit with it!
The Radical MP has been the most popular model over the years. This model has all the attributes of the Pro without the added weight, (which can be added later if needed)!
The thin beam carries over to the MP and Pro while the S has a slightly wider beam.
The S model fits the very necessary range of 102 square inch racquets because Head has, correctly, reduced the number of head sizes per model. The Speed series has the 100 square inch head size very well covered.
You will see all the specifications on each individual review that will be posted shortly.
Head Graphene 360+ Radical Pro
Head Graphene 360+ Radical S
Head Graphene 360+ Radical Pro v21
As you would expect the Radical Pro is the heaviest of the Radical Series, but only by a few grams! What! When we talk about grams to some players it might as well be angstroms or something like that. What the heck is a gram? For many in the US market is still “Talk to me in ounces, please!”
OK, there are 454 grams in a pound and 16 ounces in a pound. If I said a racquet weighs 285 grams what would you think? Or, if I said the racquet weighs 10 ounces which sounds better if you are weight averse?
OK, the Radical Pro weighs 13 grams more than the Radical MP so how many ounces is that?
Enough of this stuff! However, it is important to know what weight is and how it can be a significant factor in your playing. Weight is your friend!
As you will see in the following specifications a lot depends on how the weight is distributed throughout the racquet.
Head Graphene 360+ Radical Pro
Here is a little hint; take a look at the swing weight of the MP and the Pro and tell me what you see.
The Radical Pro has the “sound grommets’ and the “control pattern” for those concerned with string spacing, and that should be many of you. String spacing can have a profound affect on durability and playability.
The enlarged circle was intended to show the elongated grommets which allow the string to move and effectively be a little longer meaning more energy return.
| Manufacturer | Head |
| Racquet Model | Head Graphene 360+ Radical Pro v21 |
| Reference Tension | 55 lbs - 24.9 k |
| String: Main/Cross | Victrex 7718 |
| Machine Used | TT Professional |
| ASPS, RDC | 54 |
| ASPS, FlexFour | 63.5 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 53 |
| Weight, Grams | 328 |
| Weight, Ounces | 11.57 |
| Balance, mm | 321 |
| Balance, Inch | 12.64 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.627 |
| Head Length | 12.80 |
| Head Area, cm2 | 624.3 |
| Head Area, Sq. Inch | 96.8 |
| Beam Width, mm, Shaft, Center, Tip | 20, 23, 21 |
| In Plane Stiffness, Pounds/In | 400.0 Lbs/In. |
| In Plane Stiffness, Kg/cm | 71.5 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .633 |
| Main String Grid | 7.25 |
| Cross String Grid | 9.40 |
| Density (% of head filled with string) | .688 |
| Average Cross String Space | .490 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.8 |
| First Moment, Nm | .808 |
| Polar Moment | 324 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 310 |
| Swing Weight, Ounces | 10.93 |
| Swing Weight Calculated | 338 |
| Power, RDC | 47 |
| Control, RDC | 54 |
| Manueverability, RDC | 80 |
| Power, Calculated | 1889.7 |
| Head Points | 6.77 (negative = head heavy) |
| Head Weight, % | 46.9% |
| Center of Percussion | 20.8 |
| Dwell Time, ms, No Swing | 8.66 |
| Effective Stiffness - lbs | 29.1 |
| K, Lb/In (SBS) RDC | 173.06 |
| Recoil Weight | 152.11 |
| Twist Weight | 227.78 |
| End Weight | 136.1 |
| Tip Weight | 191.5 |
| Total Weight | 327.6 |
| 9 O'Clock | 98.8 |
| 3 O'Clock | 97.5 |
| Butt Cap | 131.3 |
| Total Weight | 327.6 |
Head Graphene 360+ Radical MP v21
Well, this is one way to get 2021 of to a great start! This eye popping Radical will certainly add excitement to your life!
This is truly orange with capitol O! You simply need to see this racquet to really appreciate the color.
Radical MP v21
But, color aside, this racquet continues the Radical silo of aggressive racquets for the aggressive player, or those that want to be!
This review is the MP which has been one of the most popular models over the years and I am happy to say they have not messed it up as is so often the case when introducing new products! This is a real Radical racquet!
A couple of things really stand out. First the string pattern is more dense in the center of the racquet by a small amount which allows for a more open pattern at the periphery for more comfort.
The top eight (8) grommets are on a separate insert and they are “straight” instead of radial.
The addition of “sound grommets” is intended to enhance power via greater string movement. and optimize sound and vibrations.
And the “in plane” stiffness is a little lower meaning the string bed stiffness may be slightly less at the same reference tension, also contributing to comfort.
If you are looking for a high performance tennis racquet that has room for some weight as you require it, this is the one. If you already need more weight that will be the Radical Pro that will be reviewed next.
| Manufacturer | Head |
| Racquet Model | Head Graphene 360+ Radical MP V21 |
| Reference Tension | 55 lbs - 24.9 k |
| String: Main/Cross | Victrex 7718 |
| Machine Used | TT Professional |
| ASPS, RDC | 55 |
| ASPS, FlexFour | 67 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 50 |
| Weight, Grams | 315 |
| Weight, Ounces | 11.11 |
| Balance, mm | 330 |
| Balance, Inch | 12.99 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.625 |
| Head Length | 12.81 |
| Head Area, cm2 | 624.7 |
| Head Area, Sq. Inch | 96.8 |
| Beam Width, mm, Shaft, Center, Tip | 20, 23, 21 |
| In Plane Stiffness, Pounds/In | 382.2 Lbs/In. |
| In Plane Stiffness, Kg/cm | 68.3 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .633 |
| Main String Grid | 7.13 |
| Cross String Grid | 9.31 |
| Density (% of head filled with string) | .677 |
| Average Cross String Space | .484 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.8 |
| First Moment, Nm | .803 |
| Polar Moment | 330 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 313 |
| Swing Weight, Ounces | 11.04 |
| Swing Weight Calculated | 343 |
| Power, RDC | 46 |
| Control, RDC | 55 |
| Manueverability, RDC | 78 |
| Power, Calculated | 1909.3 |
| Head Points | 3.94 (negative = head heavy) |
| Head Weight, % | 48.2% |
| Center of Percussion | 20.9 |
| Dwell Time, ms, No Swing | 8.58 |
| Effective Stiffness - lbs | 29.4 |
| K, Lb/In (SBS) RDC | 176.28 |
| Recoil Weight | 148.6 |
| Twist Weight | 218.8 |
| End Weight | 125.1 |
| Tip Weight | 190.7 |
| Total Weight | 329.2 |
| 9 O'Clock | 96.8 |
| 3 O'Clock | 96.7 |
| Butt Cap | 120.0 |
| Total Weight | 313.5 |
Questron Update!
Questron has been operational at the World Headquarters of Racquet Quest for a few weeks and it is time to acknowledge the benefit of having Questron and the ones that made it possible!
Dr, Rich Zarda and Shenghong Zhang are responsible for actually getting it done! Dr. Zarda was instrumental in determining what need to be tested and Shane actually did the assembly and programming of the UI! An extraordinary effort by both!
Our good friend JC Carpentier at Tennis machines in St. Louis pitched in with the perfect string connection points which make Questron function in a way that does not stress the string at the connection points. We want the string to fail (break) in the middle. Thank you, JC!
So, all I have to do is insert the test string and watch! The image below is a graph recorded for each string that is tested, and two (2) strings can be overlayed to see the difference between them.
This graph was just pulled at random so you can see the output.
This information is incredibly helpful and will become even more helpful as the database grows.
My sincere thank you to everyone that got this done!
Connector
A Rarity …Continued
It is fun to have these fairly rare racquets to work on and get back into playing condition! We will report on each of them as we go through the setup procedure, and note any differences that we find.
We will try to compare some of the specifications to current or “recently current” racquets to see how far we have come…or not!
-
- Remember me?
-
- Austrian Twin Tube
-
- Original TK57 Pallet
-
- New Butt Caps
A few things stand out right away:
- The racquet is nearly 28 inches long (71.1cm)
- The racquet is very flexible in (RDC48) and out (285.7) of plane
- The racquet has a straight thin (21mm) beam
- The racquet is (was) made in Austria
| Head Radical Tour OS - Austria | |
|---|---|
| Manufacturer | Head |
| Racquet Model | Head Radical Tour OS - Austria |
| Reference Tension | 58 lbs - 26.3 k |
| String: Main/Cross | Polyester |
| Machine Used | TT Professional |
| ASPS, RDC | 64 |
| ASPS, FlexFour | 63 |
| Racquet Flex, RDC | 48 - After stringing |
| Racquet Flex, FlexFour | 44 |
| Weight, Grams | 352 |
| Weight, Ounces | 12.42 |
| Balance, mm | 329 |
| Balance, Inch | 12.95 |
| Length, Cm | 71.1 |
| Length, Inch | 27.992 |
| Head Width | 10.23 |
| Head Length | 13.43 |
| Head Area, cm2 | 695.9 |
| Head Area, Sq. Inch | 107.9 |
| Beam Width, mm, Shaft, Center, Tip | 21, 21, 21 |
| In Plane Stiffness, Pounds/In | 285.7 Lbs/In. |
| In Plane Stiffness, Kg/cm | 51.1 Kg/cm |
| Number of Main Strings | 18 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .721 |
| Main String Grid | 7.81 |
| Cross String Grid | 10.12 |
| Density (% of head filled with string) | .733 |
| Average Cross String Space | .533 |
| Average Main String Space | .434 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .894 |
| Polar Moment | 389 |
| Torsional Stability | 20 |
| Swing Weight, Kg/cm2 | 369 |
| Swing Weight, Ounces | 13.03 |
| Swing Weight Calculated | 381 |
| Power, RDC | 36 |
| Control, RDC | 66 |
| Manueverability, RDC | 41 |
| Power, Calculated | 2063.3 |
| Head Points | 8.35 (negative = head heavy) |
| Head Weight, % | 46.3% |
| Center of Percussion | 22.0 |
| Dwell Time, ms, No Swing | 7.96 |
| Effective Stiffness - lbs | 27.4 |
| K, Lb/In (SBS) RDC | 205.13 |
| Recoil Weight | 186.9 |
| Twist Weight | 273.6 |
| End Weight | 139.3 |
| Tip Weight | 213.3 |
| Total Weight | 352.6 |
| 9 O'Clock | 106.3 |
| 3 O'Clock | 106.0 |
| Butt Cap | 140.7 |
| Total Weight | 353 |
Consistency. What Does It Look Like?
Consistency!
Consistency is a component of almost every successful thing we do each day!
But, what does it look like? Well since this is a tennis centric post it will look like this:
What you are looking at is identical racquets, identical string, identical failure location!
If you find the very end of each string you will see how consistent this failure location is.
This string is a high elongation material so will notice that the ends of the broken strings are very far apart.
This is a good thing since it (elongation) contributes to comfort and power when hitting the ball.
This failure location indicates the player is striking the ball with consistency! That many explain the UTR of 13.3!
What else does this failure location show us?
- Most impacts are not in the center of the racquet.
- The string spacing in this area is a little more “open” which may “catch” the ball and contribute to rotation.
- There are more strings for the ball to “roll” over before leaving the racquet which may contribute to rotation.
Consistency is important in everything we do. Visualize it like the string bed of this racquet and try to hit the same spot each time you do something…anything!
See What We are Talking About?
If you have been listening to the Racquet Quest Podcast you know we have talked about what to NOT accept when you pick up your newly strung racquet.
We know it is hard to visualize sometimes so these pictures are posted to give you a visual aid! This is the very same string! One could conclude from these images that the person responsible for these knots has not had any training at all. It makes you wonder how good the rest of the string job is!
Bad Knot
In the interest of improving all stringing, please do not accept this kind of work.
The image below shows the “dreaded” crossover! This is not only a potential string damaging error it indicates a lack of skill, or understanding, of doing a good job!
Of course, mistakes do happen but it is the responsibility of the stringer, in this case, to correct the mistake before the client comes to collect their racquet!
Be Prepared!
Be Prepared!
It sure sounds simple but is it? Not really! When talking about tennis preparedness that means having enough racquets ready for the tournament, organizing training sessions, plenty of shirts, shoes, and socks, of course!
But, what’s missing?
Your string is missing! Sure, you have done a great job of getting your racquets ready but I don’t see several sets of the string you use in the bag! Why not? You may believe they will have it at the tournament site, and, if you are using a commodity string, you may be right!
But what if you’re using a high performance string that is set up for your playing style?
- Take a few sets of your preferred string with you. I prefer sets over reels but that is up to you.
- Tell the stringer exactly what you want. That means knowing what you want so be prepared!
- Request that your racquet be strung using two (2) pieces of string and the cross strings be started at the top of the racquet. No exceptions! No ATW’s, No natural one-piece, simply two pieces top to bottom!
Know how to identify the correct stringing procedure and don’t accept anything that is not up to your standards!
Most qualified stingers will appreciate your input and do the proper job for you!
Today a racquet came in that was strung at a tournament that missed the mark! One-piece ATW, sloppy knots, distorted head shape, and a string that is not used by the player!
That is why we are posting this… “Be Prepared”
What’s in a Name!
In this particular case, it is the name “Roger Federer” and the racquet that carries his name, or just about!
When you hear about the Wilson Pro Staff 97 his name comes to mind as well as the thought “I can’t possibly play with his racquet”. Well, maybe not but there is really good news!
You don’t have to play with “his” racquet to get the benefits of the Pro Staff concept!
The Wilson Pro Staff 97, V13, is that racquet you have been looking for if you want:
- The really good overall weight of 339 grams (11.9 ounces)
- The very easy to handle swing weight of 314 (11.1 ounces)
- A reasonable stiffness of 64 RDC
Only the sharpest of eyes will notice the subtle differences between this racquet and that RF97 Autograph.
This Pro Staff returns to the classic Pro Staff accent colors of red and yellow. The red butt cap is a small concession to the lighter racquet with it’s more hand-friendly smooth edges.
| Wilson Pro Staff 97, V13 | |
|---|---|
| Manufacturer | Wilson |
| Racquet Model | Wilson Pro Staff 97, V13 |
| Reference Tension | 55 lbs - 24.9 k |
| String: Main/Cross | MonoGut ZX Pro |
| Machine Used | TT Professional |
| ASPS, RDC | 51 |
| ASPS, FlexFour | 61 |
| Racquet Flex, RDC | 64 - After stringing |
| Racquet Flex, FlexFour | 49 |
| Weight, Grams | 339 |
| Weight, Ounces | 11.96 |
| Balance, mm | 317 |
| Balance, Inch | 12.48 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.625 |
| Head Length | 12.77 |
| Head Area, cm2 | 622.9 |
| Head Area, Sq. Inch | 96.5 |
| Beam Width, mm, Shaft, Center, Tip | 22, 22, 22 |
| In Plane Stiffness, Pounds/In | 468 Lbs/In. |
| In Plane Stiffness, Kg/cm | 212 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .635 |
| Main String Grid | 7.40 |
| Cross String Grid | 10.51 |
| Density (% of head filled with string) | .779 |
| Average Cross String Space | .546 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.8 |
| First Moment, Nm | .821 |
| Polar Moment | 330 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 314 |
| Swing Weight, Ounces | 11.08 |
| Swing Weight Calculated | 340.7 |
| Power, RDC | 51 |
| Control, RDC | 49 |
| Manueverability, RDC | 77 |
| Power, Calculated | 1940.2 |
| Head Points | 8.03 (negative = head heavy) |
| Head Weight, % | 46.3% |
| Center of Percussion | 20.7 |
| Dwell Time, ms, No Swing | 8.91 |
| Effective Stiffness - lbs | 28.4 |
| K, Lb/In (SBS) RDC | 163.46 |
| Recoil Weight | 157.6 |
| Twist Weight | 235.6 |
| End Weight | 144.5 |
| Tip Weight | 194.3 |
| Total Weight | 338.8 |
| 9 O'Clock | 97.6 |
| 3 O'Clock | 98.4 |
| Butt Cap | 141.6 |
| Total Weight | 337.6 |
Let’s Get Serious!
If you listen to the Racquet Quest podcasts you will recognize this statement!
So, why are we posting it on the website if it is already a podcast? Because it is serious! A racquet came in today that reminded me of why we started GASP! The stringing is so awful that I can’t keep myself from writing this!
The owner of the racquet does not remember at which tournament it was strung otherwise we could contact them and offer some suggestions!
Why is this racquet so bad?
- Inconsistent tension across the string bed
- The accuracy index is 65!
- Virtually no tension in the top cross string…because
- The racquet was strung from the bottom up plus the poor knot
- Stringing of the crosses started at the bottom (starting X at the top is highly recommended)
- Tie offs on the wrong holes
- 8M is better
- Cross over at the lower side
- Probably due to the wrong tie off
- One-piece format
- Inconsistent string tension
- Bad tie off knots
Why is it so hard to do a better job when stringing a tennis racquet? In this case, it appears the stringer has no training. There are errors no competent stringer would make! But, until players refuse to accept this shoddy work it will continue!
-
- Wrong Tie Off Hole
-
- Cross Over
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- Bad KNot
-
- Another Really Bad Knot
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- No Tension on the First Cross String
Why “demo” a Racquet?
We have had this discussion before, but it needs repeating periodically!
Why? Because players are not, in some cases, getting what they want but thought they were. And whose fault, or oversight, is that? The racquet dealer, the player, advertising, or just bad luck?
I say it is the “demo” process in general! As we have discussed before the demo racquet your receive from online or even a local store is probably not set up for you! So you are “demoing” something that may not be even close to what you want or need! This can be costly!
Probably more costly than demoing a racquet that is set up for you! It will cost at least one stringing of the string of your choice…your choice, not anyone else’s choice! The tension will be what you want, not anyone else. The weight and swing weight will be set up for you, not anyone else…so you see where this is going! Spending $50.00 may save you $100’s if a “poor” selection is made!
After you have had the demo racquet set up for you it is important that you try it as many times as possible, but at least three (3) sessions.
The objective of a demo program is to get the correct racquet for you so take advantage of the “set up” opportunity!
Bolt 98L
The Bolt Racquet Series is back and in a very good way!
In case you don’t remember the Bolt racquets incorporate a patented Zip Strip that sits between the racquet and the string that mitigates the stiffness of the string bed somewhat.
I mention this because the In-Plane stiffness number you will see in the review shows a single number, and in fact for testing devices that number will be nearly the same with and without the Zip Strip interaction.
The Zip Strip will produce an “effective” hitting area larger than the measured racquet head size.
| Bolt 98L, V2 | |
|---|---|
| Manufacturer | Bolt |
| Racquet Model | Bolt 98L, V2 |
| Reference Tension | 55 lbs - 24.9 k |
| String: Main/Cross | Head Lynx/Head Reflex |
| Machine Used | Babolat Racket Station |
| ASPS, RDC | 60 |
| ASPS, FlexFour | 67.5 |
| Racquet Flex, RDC | 61 - After stringing |
| Racquet Flex, FlexFour | 36 |
| Weight, Grams | 318.2 |
| Weight, Ounces | 11.22 |
| Balance, mm | 333 |
| Balance, Inch | 13.11 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.581 |
| Head Length | 12.75 |
| Head Area, cm2 | 618.7 |
| Head Area, Sq. Inch | 95.94 |
| Beam Width, mm, Shaft, Center, Tip | 23.5, 22.7, 22.2 |
| In Plane Stiffness, Pounds/In | 454 Lbs/In. |
| In Plane Stiffness, Kg/cm | 178.7 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .654 |
| Main String Grid | 7.312 |
| Cross String Grid | 9.562 |
| Density (% of head filled with string) | .644 |
| Average Cross String Space | .481 |
| Average Main String Space | .446 |
| Dynamic Tension, Kp, ERT | 38 |
| Dynamic Tension, Lbs/in | 212.54 |
| First Moment, Nm | .823 |
| Polar Moment | 355 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 337 |
| Swing Weight, Ounces | 11.89 |
| Swing Weight Calculated | 353.7 |
| Power, RDC | 48 |
| Control, RDC | 52 |
| Manueverability, RDC | 62 |
| Power, Calculated | 2024.7 |
| Head Points | 3.15 (negative = head heavy) |
| Head Weight, % | 48.5% |
| Center of Percussion | 21.8 |
| Dwell Time, ms, No Swing | 8.21 |
| Effective Stiffness - lbs | 24.4 |
| K, Lb/In (SBS) RDC | 192.31 |
| Recoil Weight | 166.19 |
| Twist Weight | 237.83 |
| End Weight | 124.1 |
| Tip Weight | 195.9 |
| Total Weight | 332.3 |
| 9 O'Clock | 96.0 |
| 3 O'Clock | 99.8 |
| Butt Cap | 117.9 |
| Total Weight | 318.2 |
What’s New?
We have had a “sneak peek” at some new tennis racquet models that will be arriving early in 2021! Typically, we can’t divulge a lot of the details yet but suffice it to say these are exciting models!
But let’s back up a minute and talk about new racquets that are here, or should be here, or will be here soon! The new Wilson Pro Staff series had a delivery date of September 28, 2020. They are way behind! If you are waiting for a new Pro Staff…we are sorry! Who knows what happened, but it is not good when the expected deliveries are not met!
The new Pro Staff RF 97 Autograph will change only to the Pro Staff colors of red and yellow stripes; the Pro Staff RF 97 will get a new grip pallet and butt cap setup that is intended to be easier on the hand.
The new Tecnifibre RS Series offers some interesting geometric concepts that continue their push for more player traction.
The new Head Graphene 360+ Radical Series retains the classic Radical Orange, but this one is “in your face orange”! Awesome! A cool gray shaft and grip temper this orange!
The Radical MP that we have seen has a few changes in shape and dimensions, and in fact, it is a different racquet than the past years. The head shape is more “round” by a slight amount, and the beam cross-section is different. The beam height is slightly less than the previous version, but the stiffness remains nearly the same. The shape of the “yoke” section is a little deeper and slightly wider at the junction of the head.
The new Radical has a “slicker” aerodynamic grommet system, for, no doubt, greater head speed to go with the “spin” friendly grommets!
And, the Radical Series has been scaled back to three (3) models! The Radical Pro, the Radical MP, and the Radical S. The Radical S is 102 square inches and the Pro and MP are 98 square inches.
The Head Graphene 360+Gravity has been a top seller and therefore is only getting a “cosmetic” make-over! The Hot Lava and Teal are being replaced by very interesting blue and yellow graphics! They look really good!
The Head Graphene 360+ Speed is staying the same but will add a black edition to the mix! It seems Novak likes black better than black and white so there will be a “black” in early 2021!
Don’t forget the Head Instinct “Effortless Power” series! It continues in a new color scheme, still blue and blue but in a more Head consistent pattern.
This week we will be getting the new demo racquets setup for your evaluation…if all goes well!
It is reassuring to know even in this time of uncertainty that racquet companies continue to produce great products that can, and will, help many players stay in the game!
The “Questron” has Arrived!
If you have been following Racquet Quest online and with the podcast, you know we are very fond of data! In keeping with that “fondness,” we have received our newest testing device, which I have named “Questron.”
During the last week, we have spent time getting Questron set up to do the kinds of testing we think is important for the tennis player, the racquet technician, and anyone else that cares about numbers!
It will be about another week before posting any data because we are “tweaking” some connection points, cycle settings, and refining the data’s graphing.
We have over 400 strings to test; however, we will eliminate many of those strings not relevant to today’s tennis player.
Even in the “testing” phase, we are discovering interesting facts about strings that will help us put together the best setup for you!
This is the “base” Questron. Future versions of this device will incorporate the “Power Potential,” “In-Plane Stiffness,” and “Dynamic Stiffness” testing that is currently done on other equipment.
New Direction = New Opportunities!
Our new direction has created some extraordinary opportunities! You will not only get great prices you will also receive our dedicated high performance racquet setup!
We see players that get a “great” price, which is good, but too many times the racquet and setup are not contributing to the “value”.
If you are in the market for a racquet upgrade, or even “maybe”, these are too good to pass up!
More racquets will be added soon so check back often!
Buy Direct?
As any business knows by now, there is a new way to do business regardless of what they are selling, and tennis racquets are no exception!
For several years players have been able to buy “special” racquets from some manufacturers. These racquets were typically unique graphics. The price of these racquets was, also, usually a bit more than “retail’ products.
Now, however, Wilson is making their “Pro” series racquets available through wilson.com, only. These racquets are what the cognoscenti refer to as “pro stock” racquets.
I think it is a good idea!
Why? Because so many players wanted “special” racquets and were paying exorbitant prices for racquets that may or may not be what they thought they were buying! We know because we see them!
Buying direct is one reason we have modified our model slightly by offering to a greater extent “custom” racquets. This way, you know what you are getting, exactly! I believe this will be the case with the Wilson Pro Series as well.
I believe it will not be far that more tennis racquet companies do the “direct” thing; however, “scale” is the issue and stringing and racquet setup. Some companies don’t have the resources for that, yet, so online sellers will still have some action, I think.
If you have a racquet technician you trust, purchase the racquet “direct” but have it set up locally. I think that is a winning combination!
Let us know what you think about buying directly from the racquet brand instead of online or locally.
Jack is Headed to France!
Many of our readers know Jack Anthrop, but I will tell you a little about him just in case you don’t.
Jack Anthrop
We started working for Jack about six (6) years ago, at which time he switched to Ashaway MonoGut ZX. Since that time, Jack has progressed at a stunning rate, now with a UTR of 13.26!
Jack is using the Head PT113B Speed custom racquet and now a new fiber made by Victrex, a UK company that specializes in PEEK materials for high-performance applications which is the Ashaway MonoGut ZX and ZX Pro material.
But, the big news is Jack is headed to Paris, the one in France, to play in the French Open Juniors! Jack and his partner, Max McKennon from California, are in the main draw doubles!
Jack has a great chance to be in the main draw singles as well.
Max McKennon
Congratulations to Jack and Max on this great accomplishment!
Why is My Butt Cap Loose?
Butt caps are the things at the end of your racquet that creates a flared area that fits your hand to add control to your shots.
The butt cap is usually a tight fit to the grip pallet, but manufacturers drive heavy duty staples through the butt cap into the foam grip pallet to make sure it is secure.
Over time, especially with players who hold the racquet at the very end, the butt cap may become loose.
Why is my butt cap loose?
But, why is my butt cap loose? This picture shows why it is loose!
The pallet has broken due to the stress of the staples and player gripping way, way low on the pallet.
Loose butt caps are not uncommon and can be repaired with success if given the time! Time is required because the repair will involve the use of two-part epoxy. This mixture needs to cure for several hours to be sure it will last.
The alternative, and one we use when we can, is to replace the entire grip pallet.
When we do this, we use only epoxy to secure the butt cap—no staples in most cases.
So the next time your butt cap feels loose, don’t panic. A repair can be made in most cases.
House Cleaning!
Every once in a while Racquet Quest decides to do a little house cleaning and that means opening boxes that have not been open for a long time!
And surprise! We find a lot of really interesting and exciting tennis racquets! Most of these have been on the Racquet Museum site but now it is time for them to find a new place to hang out!
Most of these racquets are new! Many have been strung for evaluation purposes but have not been played with! All of the racquets will be fitted with a new grip. All the racquets will come with the string that is now in the racquet, unless new stringing is requested. All racquets are sold “as is”. Most of them are new, but the string may be several years old. There will not be any “junk” offered, just good racquets!
| Racquet Brand | Model | Head Size | Grip Size | String | Condition | Price |
|---|---|---|---|---|---|---|
| Wilson | nCode n1 | 115 | 5 | NXT16 | New | 200.00 |
| Weed | 125 Tour EXT | 125 | 3 | Weed Synthetic Gut | New | 50.00 |
| Weed | 135 Open Tour | 135 | 3 | ALU Power Rough | New | 50.00 |
| Weed | 125 X-One 25 | 125 | 3 | Weed Synthetic Gut | New | 50.00 |
| Prince | Tour 100 18x20 | 100 | 3 | None | New | 150.00 |
| Prince | EXO Warrior 100 | 100 | 2 | Prince Premier Attack | New | 150.00 |
| Prince | EXO Red 105 | 105 | 3 | Prince Premier LT | New | 125.00 |
| Prince | EXO Blue | 110 | 3 | Prince Premier LT | New | 125.00 |
| Prince | EXO Rebel Team 98 | 98 | 3 | Prince Premier/Beast Hybrid | New | 150.00 |
| Prince | EXO Rebel 98 | 98 | 3 | Prince Premier/Beast Hybrid | New | 200.00 |
| Prince | EXO Rebel 95 | 95 | 3 | Prince Beast | New | 200.00 |
| Head | Speed LTD Edition XT | 100 | 4 | None | New | 100.00 |
| Head | Instinct MP XT | 100 | 2 | None | New | 100.00 |
| Head | Graphene Instinct PWR | 115 | 3 | PPS 17 | New | 150.00 |
| Head | Graphene Touch Radical PWR | 110 | 3 | FXP 16 | New | 150.00 |
| Dunlop | AeroGel Smoke | 100 | 5 | Silk 17 | New | 100.00 |
| Dunlop | M-Fil 3 Hundred | 98 | 5 | None | New | 150.00 |
Full Custom Racquets in Video
We want to have a discussion of “Full Custom Racquets” and this to be the best we can do at the moment!
Full custom components
Click on Full Custom Racquet to see the short video, and thank you for watching!
We believe this is an exciting step forward in specialized tennis racquets and preparation.
We are anxious to hear your thoughts on this move to better racquets for everyone…especially you!
Head Graphene 360+ Gravity MP/Tecnifibre RPX
Normally our racquet reviews are when a racquet is brand new; however, this is a case where the updated string, RPX, from Tecnifibre is an excellent opportunity to add another review to the site!
There are some excellent reasons to review the same racquet again with different string or tension settings.
- It allows us to evaluate new strings for comparison purposes.
- It will enable the player to demo the same Racquet with a different string.
- The string can affect the overall weight to a small degree but significantly impact swing weight.
For example, this racquet with Victrex 7718 PEEK string (15.9grams installed) has a swing weight of 318. With the new Tecnifibre RPX (18.0 grams installed), the swing weight is 325. That is not huge, but it is different.
Lead tape, commonly used to increase swing weight, weighs in at 2.8 grams for 12 inches! So, slightly over 2 grams of additional string weight in the strung area contribute to the difference between these strings.
Of course, this also means that swing weight can be reduced, somewhat, by using lighter string! We weigh all of the string we test for Power Potential, so we know which string can benefit either swing weight preference.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Gravity MP |
| Reference Tension | 55 lbs - 24.9 k |
| String | Tecnifibre RPX 16 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 53 |
| ASPS, FlexFour | 62 |
| Racquet Flex, RDC | 59 - After stringing |
| Racquet Flex, FlexFour | 54 |
| Weight, Grams | 322 |
| Weight, Ounces | 11.36 |
| Balance, mm | 337 |
| Balance, Inch | 13.27 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.92 |
| Head Length | 12.85 |
| Head Area, cm2 | 645 |
| Head Area, Sq. Inch | 100 |
| Beam Width, mm, Shaft, Center, Tip | 22, 22, 22 |
| In Plane Stiffness, Pounds/In | 381.0 |
| In Plane Stiffness, Kg/cm | 68.12 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .617 |
| Main String Grid | 7.75 |
| Cross String Grid | 10.37 |
| Density (% of head filled with string) | .784 |
| Average Cross String Space | .480 |
| Average Main String Space | .520 |
| Dynamic Tension, Kp, ERT | 36 |
| Dynamic Tension, Lbs/in | 201.35 |
| First Moment, Nm | .843 |
| Polar Moment | 339 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 325 |
| Swing Weight, Ounces | 11.46 |
| Swing Weight Calculated | 365.7 |
| Power, RDC | 46 |
| Control, RDC | 56 |
| Manueverability, RDC | 70 |
| Power, Calculated | 1938.8 |
| Head Points | 1.89 (negative = head heavy) |
| Head Weight, % | 49.1% |
| Center of Percussion | 20.7 |
| Dwell Time, ms, No Swing | 8.74 |
| Effective Stiffness - lbs | 27.9 |
| K, Lb/In (SBS) RDC | 169.87 |
| Recoil Weight | 146.57 |
| Twist Weight | 236.38 |
| End Weight | 119.8 |
| Tip Weight | 202.2 |
| Total Weight Check | 322 |
| 9 O'Clock | 102.3 |
| 3 O'Clock | 101.4 |
| Butt Cap | 117.9 |
| Total Weight Check | 321.6 |
What is UTR?
UTR is “Universal Tennis Rating” and it is the new standard in terms of player ratings based on match play. The range is 0 to 16.6. UTR has taken the place of the NTRP system that was sort of self-rating system. UTR is powered by the algorithmic genii at Oracle.
Guess who has the highest UTR right now at 16.14?
I mention the UTR because it is asked on our “Easy Order” system as a way to help determine what we can do for you. This is important for racquet and string selection but it is OK if you don’t know your UTR. We will figure it out!
Tecnifibre Makes a Move!
Does Tecnifibre have the “answer”…again?
We all know Tecnifibre for its terrific multi-filament strings that set the bar for strings of the material and construction. Several years ago Tecnifibre introduced a string that was intended to be arm friendly to counter the increased use of very stiff string.
Since that time Tecnifibre has gotten into the polyester string arena in a big way but they have not forgotten the player that needs a more comfortable string.
Not long ago Tecnifibre introduced Duramix 16 and 17 gauge string. As the name implies there were a couple of fibers used to create a stiffer but still comfortable string. We have used, very successfully, the Duramix 16 and 17. This is a great option for juniors that need some durability without sacrificing their arms.
Now Tecnifibre has introduced Triax! Is Triax the new “answer?”
Triax will replace the Duramix name but deliver the same or better performance and comfort.
Take a look at the String Characteristic Data to see how these new Tecnifibre strings stack up!
BYOS?
Bring Your Own String!
This post is a brief explanation of why we do not, normally, string a tennis racquet with string supplied by the customer.
- The string may not be suitable for the player or racquet.
- The string is not in good condition.
- The string package is damaged so the condition of the string is unknown.
- The string reel is tangled which requires a great deal of time to untangle.
- There is normally no cost savings.
We do, however, keep client supplied string at the World Headquarters for those clients that buy it. The string is owned by the client and can be taken for off site tournament use.
The number of different strings and brands that make it impossible to keep an adequate supply of all of them without knowing they are going to be used!
Of course there are cases that are not categorized above. The client can go to the “Easy Order” tab on this site and add information to the form which clarifies the string, racquet, and condition.
We can take a look and make a decision based on that information.
The BYOS stringing cost is $30.00. This cost is subject to actual review of the string and racquet.
Racquet Quest keeps a very broad and deep selection of the best possible strings from many brands.
Head Extreme Tour
Head is, I believe, going to expose and promote the Extreme Series to a greater extent than before.
Why do I think that? Because I am holding in my very own hands a Head Extreme Tour! This 98 square inch racquet continues the Graphene 360+ technology which has become popular in the last several releases of Head Racquets!
The new Extreme series will be shipping in July so we can’t show many pictures except the all-black version I am holding.
Head Extreme Tour
The other Extreme models will be:
Extreme MP – 100 square inch head size, 300 gram
Extreme S – 105 square inch head size, 275 gram
Extreme Lite – 105 square inch head, 265 gram
Extreme PWR – 115 square inch head, 230 gram
Extreme Jr – 100 square inch head, 240 gram
All of this series continues the “extreme” optic yellow colorway but it is now complemented by a really nice grey upper shaft and hoop! The optic yellow grip may be over the top but that is easily changed.
The Extreme Tour is fitted with a TK82S grip pallet for a comfortable rounder feeling.
Take a look at the specs here:
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Extreme Tour |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 52 |
| ASPS, FlexFour | 63.5 |
| Racquet Flex, RDC | 62 - After stringing |
| Racquet Flex, FlexFour | 40 |
| Weight, Grams | 320 |
| Weight, Ounces | 11.29 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.59 |
| Head Length | 12.87 |
| Head Area, cm2 | 625.1 |
| Head Area, Sq. Inch | 96.9 |
| Beam Width, mm, Shaft, Center, Tip | 22, 23, 21 |
| In Plane Stiffness, Pounds/In | 359.5 Lbs/In. |
| In Plane Stiffness, Kg/cm | 163.0 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .627 |
| Main String Grid | 7.12 |
| Cross String Grid | 9.63 |
| Density (% of head filled with string) | .708 |
| Average Cross String Space | .507 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .794 |
| Polar Moment | 322 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 306 |
| Swing Weight, Ounces | 10.79 |
| Swing Weight Calculated | 333.9 |
| Power, RDC | 47 |
| Control, RDC | 55 |
| Manueverability, RDC | 83 |
| Power, Calculated | 1856.5 |
| Head Points | 6.30 (negative = head heavy) |
| Head Weight, % | 47.1% |
| Center of Percussion | 20.8 |
| Dwell Time, ms, No Swing | 8.62 |
| Effective Stiffness - lbs | 28.3 |
| K, Lb/In (SBS) RDC | 166.67 |
| Recoil Weight | 149.14 |
| Twist Weight | 220.52 |
| End Weight | 132.8 |
| Tip Weight | 190.4 |
| 9 O'Clock Position | 96.6 |
| 3 O'Clock Position | 98.3 |
| Butt Cap Position | 126.3 |
Know Your String!
Several years ago, when we were beginning to increase the use of Ashaway MonoGut ZX and ZX Pro, it was not unusual to get a call from a client saying, “my coach says I should not be using polyester!” We could not agree more, and you are not using polyester!
You are using PEEK polymer! This string material was, and still is, referred to as Zyex with polymer production capabilities of Victrex in England.
Given the appearance of MonoGut ZX, Babolat Origin, and a few other non-polyester monofilament strings, it is not easy to distinguish these from stiffer polyester material strings. So know your string!
Single strand (monofilament) strings will have a gleaming surface unless they have been through a “roughing” process. So will monofilament strings of different materials. It is hard to tell just by looking, and that is what can create some confusion on behalf of the coach and subsequently, the player. So know your string!
If your racquet technician does not put a label on the racquet that identifies the material (or string), then be sure to ask what material you are using. The material choices may be natural gut, Zyex (PEEK), Nylon, and Polyester. The string construction may be referred to as a monofilament, multi-filament, single wrap, etc. however, the material will probably be one of these four.
Know your string! If you are unsure, contact your racquet technician or “Ask John” on this site, and we will try to help.
Weight is Your Friend!
If you have been following the Racquet Quest Podcast you know how much we rely on weight to mitigate some poor shot execution or physical issues!
So, don’t be surprised if that position continues for a while! It is majorly important now that we are beginning to play (openly) again!
It is not clear to me why some players object to even discussing weight let alone add it to their racquet!
The latest podcast episode, The String Holder – Part Two, focuses on three (3) players of about the same age and skill and looks at the differences in racquet setup including weight.
If weight is so scary why do most racquets have a bunch of it hidden away from us?
This is a Tecnifibre racquet however most performance racquets will have a similar setup. Game Improvement (ultralight) racquets, typically, will not!
What you see in that groove is lead! If you flip the racquet over you will find the same thing on the other side! Lot’s of lead means lots of weight, relatively speaking!
If we wanted to reduce the weight of this racquet we could remove some or all of the weight without affecting the swing weight very much. The static balance, however, would be very different. That is why we don’t rely on “balance” as a performance metric.
In the case of this racquet, we are printing a grip pallet that will replace the original pallet but be heavier so we can remove some of the lead weight to make the new version the same weight if we wanted to. We don’t want to!
Tale of the Tapes!
Probably the most common “customization” on tennis racquets is the addition of weight! In most cases, that is a good thing. Weight is your friend!
Weight, in this case, is confined to swing weight and of course, overall weight and the placement of that weight and the format being used. We will see two (2) options and try to decide which is the best format.
Option number one below is the most common format for adding weighted tape. You can see that the tape is narrow strips that are placed on either side of the string bed. Even though the length of the tape is different on each racquet, the swing weight is the same on all of them.
Common Weighted Tape Format
Common Weighted Tape Format
The advantage of this format is that the weighted tape can easily be removed or more added if desired without affecting the formatting.
Option number two is rarely requested, but it represents the best-looking result.
Not Easily Modified Tape Placement
Not Easily Modified Tape Placement
However, this format requires much more time and is not easily removed or modified.
This format requires the grommet set to be removed, which, in most cases, is not a problem. In some cases, it will be a big problem! So be sure this is what you want!
The tape must be carefully trimmed between strings and removed without damaging the strings if modification is required to reduce weight. Doing this is not hard but does require a little more time. Adding weight requires removing the string and grommet set if the format is to remain the same, i.e., no narrow strips laid on top of the current tape.
Whichever option you choose will provide the performance boost you want!
Let us know which option you would choose in the comments below!
Racquets Taking Off …and Racquets Crashing!
Sometimes I am surprised at how a tennis racquet will find a new life after a few years of dormancy! And of course, I am astonished at how some racquets are “finished” way before their time!
The new Head Graphene 360+ Prestige is an excellent example of a racquet taking off, and the Head Adaptive Speed is an excellent example of a racquet that was laid to rest prematurely, in my opinion!
Head Graphene 360+ Prestige
Let’s start with the Prestige. One look says this is a racquet you want!
You may not care that this series has been a mainstay on the pro tour for over 25 years! You may not care that this racquet has a unique feel or a magnificent “cap” system.
You may not care that this racquet comes in a model to suit almost any playing style! NO…you care about the way it looks! The rest of the good stuff is just icing on the cake or racquet in this case!
Other racquets that would fit this category are the Wilson Pro Staff and Yonex VCore series.
On the other hand, a racquet that met its demise way too soon is the Head Adaptive Series! If you don’t know much about this series, it is not your fault! It was pulled way before it’s time.
Head Speed Adaptive Tuning Model
The Adaptive series was just that, adaptive! The string pattern could be either 16×16 or 16×19. The length could be increased in increments of .20 inch up to a total length of 27.6 inches (701mm).
Plus, the swing weight can be increased by using the optional heavy side grommet set, and the overall weight can be increase by inserting the “heavy” butt cap!
So, what happened? I think it was just too hard to sell for those places that don’t have hands-on expertise or didn’t want to take the time to explain the benefits of this concept!
Because the grip pallet was designed to be removed, it is likely that, if not done correctly, there would be some squeaking. That is not good, but it is not a problem that should keep a great idea from being a great racquet!
We still believe this is a good idea and if you do too, and want to take a look at this great idea, we have some in stock!
Easy Order is Back!
During this period of social distancing, it is hard to have a comprehensive discussion about your tennis racquet!
So, we have brought back our Easy Order form for your convenience! Simply go to the form and give us as much information as possible. Let us know when you can come by and we will reach out and grab your racquet!
In addition to the link in this post, there is a tab on the home page for Easy Order. Of course, you can use Easy Order even after this virus situation is resolved!
It is as simple as that!
We want everyone to stay safe, please!
The Coronavirus, You, and Tennis.
To our most valued and precious clients and friends, at this critical and ever-changing time in our country, we want you to know that you are in our thoughts and prayers.
The coronavirus has caused a statewide shutdown. Our hours will be changing to reflect this very important step toward taking control of this virus!
Effective immediately our hours will be Monday through Friday by appointment only. You can be assured that we will maintain the social distancing required to beat this terrible virus.
If you prefer we can deliver your order to your car or ship directly to your home or office.
Please call or text to 407.491.4755.
All of us are going through a very trying time and eliminating as much exposure as possible right now will bring a quicker end to this virus!
Please be safe!
Racquet & Tournament Management
Management is not just for adults! Juniors that play tournaments need to have some management skills! During this coronavirus slow down it is a good time to learn some of these management skills.
We see many different management slip-ups such as no racquets for the tournament tomorrow! All racquets have broken string and are at the bottom of a bag nobody wants to stick their hand into!
Juniors Management Tip #1:
Every Monday takes every racquet out of the bag. If one or more are broken leave them out of the bag.
Juniors Management Tip #2
To get some idea of how much longer the string may last simply try to move the 5th or 6th cross string by pulling up toward the top of the racquet. If you can not pull the cross string up it is time for stringing. If you are able to pull a cross string up pay attention to the “snap” it makes as you push it back into location. A serious “snap” indicates a deep notch.
Monofilament strings typically fail by notching which makes it difficult to move the cross strings. If your string is a multi-filament and looks like the picture on the left it is time to string!
Abrasion Fail Visual Test
Notching Visual Fail Test
What if neither of these conditions exists?
Every racquet in your bag should have a tag indicating when the racquet was last strung and if it has been more than one month it is time to string, period!
Just for fun you can go to our SFC function and get a good ideas as to how many times per year yu need to have your racquet strung.
Head Graphene 360+ Speed PWR
I suppose you have a pretty good idea what PWR means, right? Well, you would be correct! The Head Graphene 360+ Speed PWR is just that at a calculated power value of 2297.5! Compare that to the calculated power value for the Head Graphene 360+ Speed Lite of 1838.3! Twenty percent (20%) more powerful than the Lite!
This is what a 115 square inch head size can do for a racquet! The strings are quite a bit longer and more widely spaced which contributes to power, and comfort.
This head size is normally referred to as a “game improvement” racquet and relegated to those players that were not too athletic and/or didn’t want to exert too much energy on each stroke. In other words slow and short swings.
I am not sure that is the case with this racquet! Sure it has a big head and a thick beam but it sure does feel good when picked up (first moment)!
If we were going to recommend this racquet I would suggest some weight added to the rear end. The head does not need any additional weight.
Head Graphene 360+ Speed PWR
As I am working on this post I realize how much trouble it is to switch between racquet reviews for comparison so I am including a link to the Head Graphene 360+ Speed Series Comparison.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Speed PWR |
| Reference Tension | 56 lbs - 25.4 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 48 |
| ASPS, FlexFour | 59 |
| Racquet Flex, RDC | 64 - After stringing |
| Racquet Flex, FlexFour | 59 |
| Weight, Grams | 276 |
| Weight, Ounces | 9.74 |
| Balance, mm | 352 |
| Balance, Inch | 13.86 |
| Length, Cm | 69.4 |
| Length, Inch | 27.32 |
| Head Width | 10.50 |
| Head Length | 13.81 |
| Head Area, cm2 | 734.8 |
| Head Area, Sq. Inch | 113.9 |
| Beam Width, mm, Shaft, Center, Tip | 26, 26, 28 |
| In Plane Stiffness, Pounds/In | 550.5 Lbs/In. |
| In Plane Stiffness, Kg/cm | 249.7 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .640 |
| Main String Grid | 8.56 |
| Cross String Grid | 11.15 |
| Density (% of head filled with string) | .759 |
| Average Cross String Space | .532 |
| Average Main String Space | .535 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .764 |
| Polar Moment | 324 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 306 |
| Swing Weight, Ounces | 10.79 |
| Swing Weight Calculated | 342.0 |
| Power, RDC | 49 |
| Control, RDC | 52 |
| Manueverability, RDC | 83 |
| Power, Calculated | 2297.5 |
| Head Points | -1.57 (negative = head heavy) |
| Head Weight, % | 50.7% |
| Center of Percussion | 21.3 |
| Dwell Time, ms, No Swing | 9.18 |
| Efective Stiffness - lbs | 27.4 |
| K, Lb/In (SBS) RDC | 153.85 |
| Recoil Weight | 132.95 |
| Twist Weight | 225.40 |
| End Weight | 92.6 |
| Tip Weight | 184.4 |
| 9 O'Clock | 91.1 |
| 3 O'Clock | 90.6 |
| Butt Cap | 94.2 |
Head Graphene 360+ Speed MP Lite
The Head Graphene 360+ Speed MP Lite may be the perfect racquet for a player looking for a thin(er) beam, 100 square inch head size, slightly lighter than most MP racquets!
As you will see in the specifications this racquet is about 28 grams (1 ounce) lighter than the MP model, and, just a little more flexible, or better said, less stiff!
Forty-nine point nine percent (49.9%) of the total weight resides toward the head of this racquet, so if you think in terms of “points” it is 0.16 points head light.
Some customization will make this a racquet that you can stay with for a long time. As your skills advance, so can the racquet!
Head Graphene 360+ Speed MP Lite
As I am working on this post I realize how much trouble it is to switch between racquet reviews for comparison so I am including a link to the Head Graphene 360+ Speed Series Comparison.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Speed MP Lite |
| Reference Tension | 56 lbs - 25.4 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 51 |
| ASPS, FlexFour | 62 |
| Racquet Flex, RDC | 60 - After stringing |
| Racquet Flex, FlexFour | 49 |
| Weight, Grams | 293 |
| Weight, Ounces | 10.34 |
| Balance, mm | 342 |
| Balance, Inch | 13.46 |
| Length, Cm | 68.5 |
| Length, Inch | 26.97 |
| Head Width | 9.68 |
| Head Length | 13.06 |
| Head Area, cm2 | 640.8 |
| Head Area, Sq. Inch | 99.3 |
| Beam Width, mm, Shaft, Center, Tip | 23, 23, 23 |
| In Plane Stiffness, Pounds/In | 307.3 Lbs/In. |
| In Plane Stiffness, Kg/cm | 139.4 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .624 |
| Main String Grid | 7.30 |
| Cross String Grid | 10.62 |
| Density (% of head filled with string) | .780 |
| Average Cross String Space | .559 |
| Average Main String Space | .456 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .782 |
| Polar Moment | 323 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 308 |
| Swing Weight, Ounces | 10.86 |
| Swing Weight Calculated | 342.7 |
| Power, RDC | 46 |
| Control, RDC | 57 |
| Manueverability, RDC | 81 |
| Power, Calculated | 1835.6 |
| Head Points | 0.16 (negative = head heavy) |
| Head Weight, % | 49.9% |
| Center of Percussion | 21.0 |
| Dwell Time, ms, No Swing | 8.91 |
| Efective Stiffness - lbs | 27.6 |
| K, Lb/In (SBS) RDC | 163.46 |
| Recoil Weight | 138.67 |
| Twist Weight | 205.8 |
| End Weight | 105.8 |
| Tip Weight | 186.5 |
| 9 O'Clock | 95.1 |
| 3 O'Clock | 94.5 |
| Butt Cap | 103.0 |
Head Graphene 360+ Speed Series Comparison
Head has included six (6) racquets in the new Graphene 360+ Speeds series! It is important, I think, to know what the difference is, and, it is not always easy to compare racquets.
So, here is a comparison spreadsheet and graph that will give you an overview of the entire lineup. I have included “string bed stiffness (green)” because it shows just how influential “inplane stiffness” and string spacing is.
This is real data based on racquets that are now our “demo” racquets. No modifications have been made and no advertising was considered in these specifications.
Head Graphene 360+ Speed Series Comparison
Head Graphene 360+ Speed S
I think we all know what “Pro and MP” mean but what about “S”? I am not sure, so we are going to call it “Special”!
The Speed S is indeed special and probably one of the best all-around racquets for 2020! You will see by the specs why this may be the case but a couple of things stand out. A 100 square inch head size. A uniform 16×19 string pattern and 25mm beam producing the stiffness of RDC 64!
The overall weight and swing weight are just right for most advancing players and can be modified when the need arises! This is really a “players” racquet in disguise!
Head Graphene 360+ Speed S
While I was doing this post I realized how difficult it is to switch between racquet reviews to see a comparison so here is a link to the Head Graphene 360+ Speed Series Comparison.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Speed S |
| Reference Tension | 56 lbs - 25.4 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 54 |
| ASPS, FlexFour | 67.5 |
| Racquet Flex, RDC | 64 - After stringing |
| Racquet Flex, FlexFour | 40 |
| Weight, Grams | 302 |
| Weight, Ounces | 10.44 |
| Balance, mm | 328 |
| Balance, Inch | 12.91 |
| Length, Cm | 68.5 |
| Length, Inch | 26.97 |
| Head Width | 9.68 |
| Head Length | 13.06 |
| Head Area, cm2 | 641.2 |
| Head Area, Sq. Inch | 99.3 |
| Beam Width, mm, Shaft, Center, Tip | 25, 25, 25 |
| In Plane Stiffness, Pounds/In | 425.2 Lbs/In. |
| In Plane Stiffness, Kg/cm | 192.8 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .624 |
| Main String Grid | 7.35 |
| Cross String Grid | 9.40 |
| Density (% of head filled with string) | .749 |
| Average Cross String Space | .539 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .764 |
| Polar Moment | 312 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 296 |
| Swing Weight, Ounces | 10.44 |
| Swing Weight Calculated | 324.9 |
| Power, RDC | 45 |
| Control, RDC | 57 |
| Manueverability, RDC | 89 |
| Power, Calculated | 1880.4 |
| Head Points | 4.57 (negative = head heavy |
| Head Weight, % | 47.9% |
| Center of Percussion | 20.9 |
| Dwell Time, ms, No Swing | 8.66 |
| Efective Stiffness - lbs | 29.3 |
| K, Lb/In (SBS) RDC | 173.08 |
| Recoil Weight | 141.20 |
| Twist Weight | 211.83 |
| End Weight | 119.7 |
| Tip Weight | 182.9 |
| 9 O'Clock | 94.2 |
| 3 O'Clock | 94.2 |
| Butt Cap | 113.0 |
Head Graphene 360+ Speed Pro
This is the “PRO est” of the new Speed series because it says so right on the tip of the racquet and it carries an 18×20 string pattern, so there!
However, do not be intimidated by the “Pro” label! You will see by the specifications that this is a racquet that can be used by any player wanting to maximize their current skillset.
A couple of good reasons for this assessment is the wonderful flex of RDC 60! The overall weight and swing weight are there as a good beginning but can be adjusted to suit any player.
Typically 18×20 string patterns are not considered spin-friendly but the dense pattern can be used to your advantage by reducing string bed stiffness, thus dwell time and therefore spin potential. In other words, this pattern is highly customizable!
Head Graphene 360+ Speed Pro
If you value string life the 18×20 pattern can reward you with some increased durability.
As we mentioned in the Graphene 360+ Speed MP review there didn’t need to be many changes from the previous version and probably the most noticeable change is going to be the color “flipping” and a little increase in swing weight.
The numbers will tell the story. Click here to see the Graphene 360 Speed Pro data from last year.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Speed Pro |
| Reference Tension | 56 lbs - 25.4 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 55 |
| ASPS, FlexFour | 66.5 |
| Racquet Flex, RDC | 60 - After stringing |
| Racquet Flex, FlexFour | 43 |
| Weight, Grams | 327 |
| Weight, Ounces | 11.53 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.5 |
| Length, Inch | 26.97 |
| Head Width | 9.69 |
| Head Length | 13.06 |
| Head Area, cm2 | 641.2 |
| Head Area, Sq. Inch | 99.4 |
| Beam Width, mm, Shaft, Center, Tip | 23, 23, 23 |
| In Plane Stiffness, Pounds/In | 335.2 Lbs/In. |
| In Plane Stiffness, Kg/cm | 152.0 Kg/cm |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .668 |
| Main String Grid | 7.62 |
| Cross String Grid | 10.37 |
| Density (% of head filled with string) | .768 |
| Average Cross String Space | .513 |
| Average Main String Space | .414 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .812 |
| Polar Moment | 336 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 320 |
| Swing Weight, Ounces | 11.29 |
| Swing Weight Calculated | 341.2 |
| Power, RDC | 45 |
| Control, RDC | 57 |
| Manueverability, RDC | 73 |
| Power, Calculated | 1908.2 |
| Head Points | 6.14 (negative = head heavy |
| Head Weight, % | 47.2% |
| Center of Percussion | 21.2 |
| Dwell Time, ms, No Swing | 8.58 |
| Efective Stiffness - lbs | 28.7 |
| K, Lb/In (SBS) RDC | 176.28 |
| Recoil Weight | 159.71 |
| Twist Weight | 229.85 |
| End Weight | 133.4 |
| Tip Weight | 192.8 |
| 9 O'Clock | 97.1 |
| 3 O'Clock | 97.5 |
| Butt Cap | 131.0 |
Head Graphene 360+ Speed Mid Plus
The new(est) model of the very popular Graphene 360+ Speed series racquet is available NOW, so get up to “speed” by taking a look at the specifications for a strung racquet and the series comparison data.
The major difference between this and the previous version is the “flipping” of the colors! What was black is now white and what was white is now black! I believe not very much else was changed and for good reason! The racquet is a very, very good racquet so why make a bunch of changes?
Here is an overview of all the new Speed models. This is unstrung data, however, you can add 16 to the overall weight for string and 30 to the swing weight number to approximate the strung data.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Speed Mid Plus |
| Reference Tension | 56 lbs - 25.4 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 52 |
| ASPS, FlexFour | 63.5 |
| Racquet Flex, RDC | 61 - After stringing |
| Racquet Flex, FlexFour | 51 |
| Weight, Grams | 322 |
| Weight, Ounces | 11.36 |
| Balance, mm | 332 |
| Balance, Inch | 13.07 |
| Length, Cm | 68.5 |
| Length, Inch | 26.97 |
| Head Width | 9.67 |
| Head Length | 13.06 |
| Head Area, cm2 | 639.9 |
| Head Area, Sq. Inch | 99.2 |
| Beam Width, mm, Shaft, Center, Tip | 20, 20, 20 |
| In Plane Stiffness, Pounds/In | 329.6 Lbs/In. |
| In Plane Stiffness, Kg/cm | 149.5 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .623 |
| Main String Grid | 7.44 |
| Cross String Grid | 10.62 |
| Density (% of head filled with string) | .797 |
| Average Cross String Space | .559 |
| Average Main String Space | .465 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.16 |
| First Moment, Nm | .828 |
| Polar Moment | 345 |
| Torsional Stability | 21 |
| Swing Weight, Kg/cm2 | 324 |
| Swing Weight, Ounces | 11.43 |
| Swing Weight Calculated | 354.9 |
| Power, RDC | 48 |
| Control, RDC | 53 |
| Manueverability, RDC | 71 |
| Power, Calculated | 1960.1 |
| Head Points | 3.31 (negative = head heavy |
| Head Weight, % | 48.5% |
| Center of Percussion | 21.0 |
| Dwell Time, ms, No Swing | 8.82 |
| Efective Stiffness - lbs | 28.1 |
| K, Lb/In (SBS) RDC | 166.67 |
| Recoil Weight | 153.07 |
| Twist Weight | 225.5 |
| End Weight | 125.1 |
| Tip Weight | 197.1 |
| 9 O'Clock | 97.4 |
| 3 O'Clock | 96.9 |
| Butt Cap | 126.7 |
By The Numbers
Here we go with this numbers thing, again!
Our Racquet reviews are a bunch of numbers, but what do these numbers mean to you?
We have put together this table with a brief explanation of how each number can be used by you to understand how that property can be helpful.
If you see terms such as typical or normal, ignore them! With tennis players, there is no such thing as “typical and normal”!
If you need to be convinced, take a look at a previous post!
Please let us know if there is a number that needs more clarification or a number we are missing!
| Manufacturer | Yonex | What it Means |
|---|---|---|
| Racquet Model | Yonex VCore Pro 97 HD | Racquet being reviewed. |
| Reference Tension | 55 lbs - 24.9 kg | Stringing machine tension setting. Not, necessarily, the string bed stiffness. |
| String | Ashaway MonoGut ZX Pro | String brand name and gauge (Pro being 17Gauge) |
| Machine Used | True Tension Professional | Stringing machine used. |
| ASPS, RDC | 56 | The stiffness of all the strings as a unit. Normally between 30 and 65. |
| ASPS, FlexFour | 64.5 | The stiffness of the string bed as tested on this device. |
| Racquet Flex, RDC | 57 - After stringing | 50 is low (flexible) and 70 is high (very stiff). Clash 100 is 52 on this device. As is a Head Speed model. |
| Racquet Flex, FlexFour | 50 | 35 is low (flexible) 70 is high (very stiff). Clash 100 is 26 on this device. |
| Racquet - In Plane Stiffness | 353.8 lbs/Inch | This is how stiff the racquet head is across the middle. 300 is soft and 500 is very stiff. This affects the string bed stiffness. |
| Weight, Grams | 336 | 285 is light and 360 is heavy. 315 is minimum target weight for performance. |
| Weight, Ounces | 11.85 | The racquet weight in ounces, typically used in US. |
| Balance, mm | 322 | This is the center of gravity from the butt cap. If you put the racquet on a round rod this would be how much is hanging toward the butt cap. |
| Balance, Inch | 12.68 | This is the CG in ounces for US. Points head heavy or head light is part of this. |
| Length, Cm | 68.5 | This is the total length of the racquet and is the typical standard adult length. |
| Length, Inch | 26.968 | This is length in inches for the US. |
| Head Width, Inches | 9.57 | The inside width of the hitting area. |
| Head Length, Inches | 12.54 | The inside length of the hitting area. |
| Head Area, cm2 | 625.8 | The advertised hitting area in centimeters squared. |
| Head Area, Sq. Inch | 97.0 | The advertised hitting area in inches squared. |
| Number of Main Strings | 18 | The main strings are the vertical strings when looking at a standing racquet. Typically the longest strings. |
| Number of Cross Strings | 20 | The cross strings are the horizontal strings when looking at a standing racquet. Typically shorter. |
| Ratio Cross/Mains | .687 | The natural ratio of the string pattern (calculated). |
| Main String Grid | 7.25 | The total distance between right and left main string. |
| Cross String Grid | 10.18 | The total distance between the first cross string and the last cross string. |
| Density (% of head filled with string) | .783 | |
| Average Cross String Space | .509 | The higher this number the more the string will move. This number is used to help select the best string setup. |
| Average Main String Space | .403 | The higher this number the more the string will move. This number is used to help select the best string setup. |
| Properties of a moving racquet. | ||
| Dynamic Tension, Kp, ERT | 37 | This is the stiffness of a string bed in kilograms per centimeter based on a frequency. |
| Dynamic Tension, Lbs/in | 206.94 | This is the above converted to pounds per inch. |
| First Moment, Nm | .831 | This is how heavy the racquet feels in the hand. The higher the number the heavier the racquet will feel. |
| Polar Moment | 340 | This is the resistance to rotating about the center of the racquet on, say a mimes-hit. The higher the better. |
| Torsional Stability | 16 | This is the derived stability number. The higher the better within reason. Anything below 14 would need some help. |
| Swing Weight, Kg/cm2 | 324 | This is the "inertia" of the racquet and probably the most important number in the review! The higher the number the more momentum through the ball but less manueverability. |
| Swing Weight, Ounces | 11.43 | |
| Swing Weight Calculated | 348.4 | This number will be larger than the previous swing weight because it is calculated from the very end of the racquet as if there is no one holding it. A very important number. |
| Power, RDC | 42 | Calculated by the RDC. High is 100 |
| Control, RDC | 59 | Calculated by the RDC. High is 100 |
| Manueverability, RDC | 71 | Calculated by the RDC. High is 100 |
| Power, Calculated | 1740.5 | This number is calculated based on a bunch racquet properties, Including length. |
| Head Points | 6.46 (negative = head heavy) | This number is how positive or negative the balance is. A "point" is ⅛ of an inch so this racquet is a little over ¾ of an inch head light. |
| Head Weight, % | 47.0% | Calculated based on weight distribution and length. |
| Center of Percussion | 21.0 | This is the spot on the string bed that returns a "solid" hit. |
| Dwell Time, ms | 8.50 | This is how long the ball and string are in contact with no swing. A big swing will reduce this number by about half. |
| Efective Stiffness - lbs | 28.2 | This number is calculated from the string bed stiffness and the racquet stiffness. Anything under 30 will be "soft" feeling and over 35 will be "harsh". |
| K, Lb/In | 179.5 | This is how many pounds it takes to deflect the string bed one (1) inch. |
| Recoil Weight | 160.8 | This number is the racquets resistance to rotating backward. The higher the number the better for volleys. |
| Twist Weight | 230.8 | This is the racquets resistance to twisting in your hand. The higher the better. |
| End Weight | 139.8 | This weight is used to calculate the precise balance of the racquet. |
| Tip Weight | 196.2 | This weight is used to calculate the precise balance of the racquet. |
| 9 O'Clock | 100.4 | This is the weight of that position on the racquet head and is used for precise customization. |
| 3 O'Clock | 99.6 | This is the weight of that position on the racquet head and is used for precise customization. |
| Butt Cap | 135.6 | This is the weight of that position on the racquet and is used for precise customization. |
Head Graphene 360+ Prestige Mid
The Head Prestige Mid is, in my view, the quintessential Prestige! This Prestige is the tennis racquet you would buy even if you don’t play tennis! It would sit right next to your Porsche 550 that you don’t drive much, but both make you feel really good!
The latest edition of the Prestige Mid is the Graphene 360+ Prestige Mid, and it carries on the iconic tradition of all previous models and looks better doing it, in my opinion.
In left image, you can see the overall color scheme of all of the new Prestige series, but you can’t see the detail of the “cap system” that is different than the other three (3) Prestige models.
The lower image shows the transition location. But why?
Mid Cap System Transition
I think it is just a matter of weight. The cap system on the Mid stops halfway down the head instead of all around as on other models.
This slight reduction in weight allows for more customization options and this is a very customizable racquet.
So, if you are interested in an “iconic” racquet to place next to your 550, this is the one!
What could be better than arriving at the courts in your 550 and pull out your Prestige Mid racquet!
Game, Set, Match!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Prestige Mid |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 57 |
| ASPS, FlexFour | 72.0 |
| Racquet Flex, RDC | 63 - After stringing |
| Racquet Flex, FlexFour | 36 |
| Weight, Grams | 344 |
| Weight, Ounces | 12.13 |
| Balance, mm | 317 |
| Balance, Inch | 12.48 |
| Length, Cm | 68.5 |
| Length, Inch | 26.97 |
| Head Width | 9.25 |
| Head Length | 12.67 |
| Head Area, cm2 | 593.4 |
| Head Area, Sq. Inch | 92.0 |
| Beam Width, mm, Shaft, Center, Tip | 20, 20, 20 |
| In Plane Stiffness, Pounds/In | 428.6 Lbs/In. |
| In Plane Stiffness, Kg/cm | 194.4 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .615 |
| Main String Grid | 6.87 |
| Cross String Grid | 8.88 |
| Density (% of head filled with string) | .663 |
| Average Cross String Space | .467 |
| Average Main String Space | .429 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.9 |
| First Moment, Nm | .834 |
| Polar Moment | 341 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 326 |
| Swing Weight, Ounces | 11.50 |
| Swing Weight Calculated | 345.7 |
| Power, RDC | 47 |
| Control, RDC | 53 |
| Manueverability, RDC | 69 |
| Power, Calculated | 1888.9 |
| Head Points | 8.03 (negative = head heavy) |
| Head Weight, % | 46.3% |
| Center of Percussion | 21.1 |
| Dwell Time, ms, No Swing | 8.43 |
| Efective Stiffness - lbs | 29.9 |
| K, Lb/In (SBS) RDC | 182.69 |
| Recoil Weight | 166.4 |
| Twist Weight | 221.8 |
| End Weight | 146.7 |
| Tip Weight | 197.3 |
| 9 O'Clock | 104.6 |
| 3 O'Clock | 102.8 |
| Butt Cap | 134.6 |
Head Graphene 360+ Prestige Pro
So, what’s in a name? In the case of the name “Pro” it is weight! Right out of the box this racquet is ready to go with a wonderful weight and swing weight that you will see in the specifications.
The Prestige Pro is the “different” Prestige in the series with a more sculpted geometry. This is most noticeable in the shaft right above the grip with tapers and contours all the way to the throat. The head geometry is more elliptical in cross section than the flat section used in other Prestige racquets.
As you look at other Prestige racquets the difference in the cross section is noticable. The Tour for example has a “flat” beam cross section and the shaft right above the grip is also a “flat” cross section with little very little “sculpting
The Prestige Pro is a racquet anyone can use with a nice 16 x 19 string pattern and reasonable stiffness.
This is a legitimate 95 square inch racquet with a 16 x 19 string pattern that suits most players. The full Prestige “cap system” adds a nice measure of stability along with swing weight that gets this racquet into the “power and control” category.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Prestige Pro |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 52 |
| ASPS, FlexFour | 65.2 |
| Racquet Flex, RDC | 62 - After stringing |
| Racquet Flex, FlexFour | 44 |
| Weight, Grams | 338 |
| Weight, Ounces | 11.92 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.39 |
| Head Length | 12.85 |
| Head Area, cm2 | 611.0 |
| Head Area, Sq. Inch | 94.7 |
| Beam Width, mm, Shaft, Center, Tip | 22, 22, 22 |
| In Plane Stiffness, Pounds/In | 329.7 Lbs/In. |
| In Plane Stiffness, Kg/cm | 149.5 Kg/cm |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .615 |
| Main String Grid | 7.06 |
| Cross String Grid | 9.12 |
| Density (% of head filled with string) | .699 |
| Average Cross String Space | .494 |
| Average Main String Space | .441 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.7 |
| First Moment, Nm | .852 |
| Polar Moment | 350 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 333 |
| Swing Weight, Ounces | 11.75 |
| Swing Weight Calculated | 361.4 |
| Power, RDC | 51 |
| Control, RDC | 50 |
| Manueverability, RDC | 65 |
| Power, Calculated | 1955.2 |
| Head Points | 4.88 (negative = head heavy) |
| Head Weight, % | 47.7% |
| Center of Percussion | 21.0 |
| Dwell Time, ms, No Swing | 8.82 |
| Efective Stiffness - lbs | 28.3 |
| K, Lb/In (SBS) RDC | 166.7 |
| Recoil Weight | 161.3 |
| Twist Weight | 224.1 |
| End Weight | 136.9 |
| Tip Weight | 202.1 |
| 9 O'Clock | 104.4 |
| 3 O'Clock | 104.3 |
| Butt Cap | 129.0 |
Head Graphene 360+ Prestige Tour
When we do the testing and “number taking” for our demo racquets, we try to think as the consumer may think and include comments that may help the consumer make the best decision.
We do not want to make these posts so dull that you go to sleep, but data is essential, so we are going to include it…so stay awake!
Data is particularly relevant to the Prestige Series from Head.
This review is for the Prestige Tour, and it points to the differences between Prestige racquets that may go unnoticed or misunderstood.
The Prestige Tour is a 99 (645 cm²)square inch racquet with an 18 x 19 string pattern. If you have read the post on the Prestige MP, you may wonder, what’s the difference?
You may notice that the Prestige Tour has one (1) fewer cross string. Not a big deal. You may see that the Prestige Tour has one (1) square inch larger head size. Also, not a big deal. What you may not notice is the Prestige Tour has an in-plane stiffness of 400, and the Prestige MP has an in-plane stiffness of 359. That is a big deal! Even with a bigger head and fewer strings, the Prestige Tour has a higher string bed stiffness than the Prestige MP. The higher the in-plane stiffness, the less the racquet will “bend” during impact.
The Prestige Tour is more stiff overall (62 v 58) than the Prestige MP, and the 21.5mm beam contributes to that stiffness.
So, take a look at the numbers for this racquet to see if you can find other exciting differences!
Manufacturer Head
Racquet Model Head Graphene 360+ Prestige Tour
Reference Tension 55 lbs - 24.9 kg
String
Victrex PEEK fiber Experimental 7718
Machine Used True Tension Professional
ASPS, RDC 55
ASPS, FlexFour 71
Racquet Flex, RDC 62 - After stringing
Racquet Flex, FlexFour 49
Weight, Grams 325
Weight, Ounces 11.46
Balance, mm 327
Balance, Inch 12.87
Length, Cm 68.6
Length, Inch 27.008
Head Width 9.56
Head Length 13.12
Head Area, cm2 635.3
Head Area, Sq. Inch 98.5
Beam Width, mm, Shaft, Center, Tip 21.5, 21.5, 21.5
In Plane Stiffness, Pounds/In 400.0 Lbs/In.
In Plane Stiffness, Kg/cm 181.4 Kg/cm
Number of Main Strings 18
Number of Cross Strings 19
Ratio Cross/Mains .690
Main String Grid 7.81
Cross String Grid 10.00
Density (% of head filled with string) .724
Average Cross String Space .526
Average Main String Space .396
Dynamic Tension, Kp, ERT 35
Dynamic Tension, Lbs/in 195.7
First Moment, Nm .819
Polar Moment 334
Torsional Stability 18
Swing Weight, Kg/cm2 316
Swing Weight, Ounces 11.15
Swing Weight Calculated 347.5
Power, RDC 46
Control, RDC 55
Manueverability, RDC 76
Power, Calculated 1929.2
Head Points 4.88 (negative = head heavy)
Head Weight, % 47.7%
Center of Percussion 20.8
Dwell Time, ms, No Swing 8.58
Efective Stiffness - lbs 29.1
K, Lb/In (SBS) RDC 176.3
Recoil Weight 150.9
Twist Weight 222.7
End Weight 131.7
Tip Weight 195.3
9 O'Clock 100.7
3 O'Clock 101.4
Butt Cap 124.0
Head Graphene 360+ Prestige MP
We are finally getting the time to work on these marvelous new racquets from Head! In this case, it is the Head Graphene 360+ Prestige MP.
The Prestige is a fascinating series for Head, but I think it is often overlooked when considering a new racquet purchase. I believe the “performance” category excludes a lot of players that could very well use this racquet if it is appropriately set up. Secondly, I think players have the mistaken feeling that the Prestige series is too stiff!
I believe you will see by the following specifications that neither are necessarily true!
The Prestige series is, in my opinion, the best looking new racquet in a long time. However, in a performance racquet, what does “looks” have to do with it? In my opinion, a lot!
This racquet is the “true” 98 square inch (630 cm²) head size with an 18 x 20 string pattern and, of course, the excellent “cap system” that contributes to the performance of this racquet. You will see in the specifications that the swing weight is on the “light” side, allowing for customization to suit any player.
Head is now including a CPI, “Control Power Index,” and this racquet ranks as a CPI 200 compared to the Prestige Pro at CPI 300. The difference is a function of the tight string pattern and flex. The thin 20mm beam throughout contributes to the nice flex of RDC 58 after stringing.
A lower CPI indicates to us that the racquet will do no more than you ask of it! If you want the ball to go fast you swing harder! The racquet will not force to to “fear” your stroke!
If you are considering an 18 x 20 string pattern this racquet should be right at the top of the list.
Our COF numbers are quite good which indicate a positive contribution to “spin” considering the tight string pattern.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360+ Prestige MP |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Victrex PEEK fiber Experimental 7718 |
| Machine Used | True Tension Professional |
| ASPS, RDC | 58 |
| ASPS, FlexFour | 67 |
| Racquet Flex, RDC | 58 - After stringing |
| Racquet Flex, FlexFour | 39 |
| Weight, Grams | 337 |
| Weight, Ounces | 11.89 |
| Balance, mm | 313 |
| Balance, Inch | 12.32 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.47 |
| Head Length | 13.05 |
| Head Area, cm2 | 625.9 |
| Head Area, Sq. Inch | 97 |
| Beam Width, mm, Shaft, Center, Tip | 20, 20, 20 |
| In Plane Stiffness, Pounds/In | 359 Lbs/In. |
| In Plane Stiffness, Kg/cm | 162 Kg/cm |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .653 |
| Main String Grid | 7.50 |
| Cross String Grid | 10.25 |
| Density (% of head filled with string) | .792 |
| Average Cross String Space | .513 |
| Average Main String Space | .417 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.9 |
| First Moment, Nm | .803 |
| Polar Moment | 326 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 311 |
| Swing Weight, Ounces | 10.97 |
| Swing Weight Calculated | 330.2 |
| Power, RDC | 39 |
| Control, RDC | 62 |
| Manueverability, RDC | 79 |
| Power, Calculated | 1749.9 |
| Head Points | 9.29 (negative = head heavy) |
| Head Weight, % | 45.7% |
| Center of Percussion | 21.0 |
| Dwell Time, ms, No Swing | 8.35 |
| Efective Stiffness - lbs | 29.0 |
| K, Lb/In (SBS) RDC | 185.9 |
| Recoil Weight | 160.4 |
| Twist Weight | 226.8 |
| End Weight | 149.2 |
| Tip Weight | 189.9 |
| 9 O'Clock | 98.2 |
| 3 O'Clock | 98.8 |
| Butt Cap | 140.3 |
Grip Shape and Size Customization!
Racquet Quest, LLC is really happy to announce an addition to our Grip Shape and Customization capabilities! After several years of design and experimentation we have 3D printed grip pallets! Our grip pallets are printed locally so your racquet stays at the World Headquarters!
Custom Printed Grip Pallets
Due to the racquet manufacturing variations it is not feasible to print a “bunch” of size 3 pallets, for example, so we design and print a grip pallet for your racquet exclusively!
So, if you want your racquet to have a “rounder” grip shape, or a “flatter” grip shape it is possible! In fact if a grip of an unusual shape is required, and the racquet shaft is compatible, that can be produced!
Extending a racquet is now more efficient due to the length of the printed components.
If a full blown extension is not part of the plan right now a “finishing plug” with the desired length is designed and printed to fit your exact shaft dimensions.
Please contact us if you have questions about the process, and what dynamic changes will occur, and what additional customization might be desired.
Due to the “customization” that may be required on the racquet the manufacturers warranty, if any, will, most likely, be “voided!”
Yonex VCore Pro 97 HD
Have you ever wanted to play with a Yonex Pro racquet but really want a 18 x 20 string pattern? Well your want’s have come true! The new Yonex VCore Pro 97 HD is that racquet and it is here!
The great new green and gold cosmetic creates a “menacing” tool for your game. This is a “thin” beam racquet measuring 20.0mm through out the length which results in a flexible racquet. That flex combined with the “mesh” material in the grip area should make this a comfortable hit with just enough feed-back to be helpful.
The 18 x 20 string pattern, thus the “HD” designation, makes this a control oriented racquet allowing for massive strokes for increased ball rotation. The “HD” should contribute to extended string durability but if this raacquet suits your playing style string durability is not top on list of considerations!
Yonex says “For advanced players looking to play aggressively with added precision, feel, and stability”.
Other VCore Pro 97 racquets wil be here soon but in the meantime take a look at the specifications of the VCore Pro 97 HD.
| Manufacturer | Yonex |
|---|---|
| Racquet Model | Yonex VCore Pro 97 HD |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Ashaway MonoGut ZX Pro |
| Machine Used | True Tension Professional |
| ASPS, RDC | 56 |
| ASPS, FlexFour | 64.5 |
| Racquet Flex, RDC | 57 - After stringing |
| Racquet Flex, FlexFour | 50 |
| Racquet - In Plane Stiffness | 353.8 lbs/Inch |
| Weight, Grams | 336 |
| Weight, Ounces | 11.85 |
| Balance, mm | 322 |
| Balance, Inch | 12.68 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.57 |
| Head Length | 12.54 |
| Head Area, cm2 | 625.8 |
| Head Area, Sq. Inch | 97.0 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .687 |
| Main String Grid | 7.25 |
| Cross String Grid | 10.18 |
| Density (% of head filled with string) | .783 |
| Average Cross String Space | .509 |
| Average Main String Space | .403 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .831 |
| Polar Moment | 340 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 324 |
| Swing Weight, Ounces | 11.43 |
| Swing Weight Calculated | 348.4 |
| Power, RDC | 42 |
| Control, RDC | 59 |
| Manueverability, RDC | 71 |
| Power, Calculated | 1740.5 |
| Head Points | 6.46 (negative = head heavy) |
| Head Weight, % | 47.0% |
| Center of Percussion | 21.0 |
| Dwell Time, ms | 8.50 |
| Efective Stiffness - lbs | 28.2 |
| K, Lb/In | 179.5 |
| Recoil Weight | 160.8 |
| Twist Weight | 230.8 |
| End Weight | 139.8 |
| Tip Weight | 196.2 |
| 9 O'Clock | 100.4 |
| 3 O'Clock | 99.6 |
| Butt Cap | 135.6 |
Brittany Tagliareni: Person…Tennis Player…Friend
We hope you will enjoy this video that was aired recently on The Tennis Channel!
We have been working with Brittany and her Mother, Cathy for several years and they have been the most wonderfuly enlighting years!
What Brittany allowed us to do was try to configure the racquet, grip and string setup that would provide the best tactile feedback and consistency. Brittany is currently using a Yonex SV100 and Ashaway MonoGut ZX string.
If you don’t already know Brittany the following video will get you accquainted.
Head Speed 10th Anniversary Edition
The new Head Speed 10th Anniversary Edition is here and whether you are a collector or serious player, or both, you need to see this model!
The all black, with some gold splashe
s, racquet is here in the MP and S versions, and both the same specs as the non anniversary edition which, by the way, has put a Head racquet in the top five best sellers in the US!
Typical of all Head Special Editions and Anniversary Models this racquet comes pre-strung with another set of string attached for those that don’t like the current string setup. A good move, in my opnion.
These racquets are here now so stop by and take a look at this beaitiful Anniversary Edition.
A Picture is Worth a Thousand Words!
In this particular instance, a few words are required to make the picture make more sense.
Thanks to Australian stringer Ashley Nugent, for asking, is the picture in the post “Is Your Racquet Healthy” accurate in terms of failure?
It is highly unlikely that a main and cross string will break at the same time in the same location.
The image was taken a couple of years ago and had to do with “elongation” not the failure and, I grabbed it to show what I mean by “obvious” in the subject post.
I am pretty sure the cross string in the picture was “cut” to illustrate the difference in elongation not string failure.
Thank you, Ashley!
Is Your Racquet Healthy?
I started thinking about this as I made my way to a routine doctor’s appointment last week. Here is the scenario I formed while waiting:
The doctor has been seeing all sorts of patients already today and I suspect the first glance at each one elicited some sort of reaction, quielty probably, like this; “Good Greif, that guy is fat! Bad trousers, terrible shoes, nice shirt, whats with the hair, dude?” etc, etc.
So what do you think happens when a racquet shows up for a checkup?
“Good grief, that is an old racquet, who would ever buy one of those, this person is too good for that racquet,” etc, etc.
As humans we can communicate how we feel to the doctor but your racquet can not, so it has other ways to tell you if it is healthy or not. Here are a few signs of an unhealthy racquet:
- Grommet set, and specifically the protective head bumper is worn out. If this is not fixed quicky the racquet will die!
Worn Out Bumper Guard
- Grommet set individual barrels are broken or missing. If this is not fixed the strings will die!
- Overgrip is disgustingly dirty requiring exam gloves to remove it! Doctors use exam gloves too and you know what that means!
- Under grip is essentially rendered to powder, requiring exam gloves to remove it.
Obvious!
What is not so obvious sometimes is that strings need to be replaced. Even before they break! What!
Yes, strings loose tension over time and in some case rather quickly! By knowing what the original string bed stiffness was we can determine how much “stiffness” has been lost. For most players a degradation of 20% is maximum.
Depending on the string material a loss of 8 to 9% overnight is not uncommon…so that leaves 11 to 12% for playing.
Take a look at our String Frequency Calculator to get a better idea of stringing frequency required to keep your racquet really working for you.
To keep you playing at your best you need to keep your racquet at it’s best!
How to Demo a Racquet
We have what seems to be a zillion demo racquets, and there is a player for each of them, I suppose.
One of the biggest complaints against “demoing” is precisely that…too many to choose from!
This is what we recommend;
- Start the convesation with yourself before you need to make a decision. Allow a month before the “season” starts if you can,and start the conversation with us early on.
- What do you want that your current racquet is not providing.
- What is your budget. If you are a junior what is your “sponsors” budget.
- With these three questions you are well on the way to a painless “demoing” expreience!
Here is what we would like to have to speed up the process:
- Bring your current racquet in “play ready condition” with you to the primary discussion.
- Tell us what has changed physically since you selected the current racquet.
- Injuries, including tennis elbow, shoulder and wrist issues, or a long layoff, etc.
- What do you want the new racquet to do that the current racquet is not?
- Power, or “POP”, Control, Comfort, Grip Size, String Issues, etc.
- Do you have a brand preference?
- If we can make your current racquet better will you not demo other racquets?
- It is possible that the current racquet can be better than it is so demo it as well after some customization.
- Tell us if this is of interest or “I want a new racquet…period!
With this information we can make the demoing process much more fun,consise, and ultimatley rewarding, and in a much shorter time period.
Our demo process is free however we believe the racquet should be “setup” just as it will be used which may require stringing and a litttle customization and there will be a charge for that if you agree.
Our huge database of racquet specifications allow a quick look at the characteristics you prefer.
We think you wil be surprised at how much fun the demo process can be!
Head Graphene 360 + Gravity Lite
If you guessed the Lite is the lightest model in the Gravity series you are correct, but did you guess it is also a 104 square inch head? Two 104 models in the series! I say “way to go”!
Head Graphene 360 + Gravity Lite
The 16 x 20 string pattern remains but the spacing is slightly more “open” than the “S”. The “Lite” is slightly stiffer than the “S” therefore a slightly higher power calculation you will see in the specifications.
The “Lite” can be the perfect racquet for those looking for a 10 ounce racquet, and whose game is “settled in” and are not looking to make a bunch of stroke/technique changes!
The “Lite” will come in the smallest grip size of any Gravity model which is important when fitting a smallish person with a performance racquet!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360 + Gravity Lite |
| Reference Tension | 53 lbs - 24.9 kg |
| String | Head Velocity MLT Black |
| Machine Used | True Tension Professional |
| ASPS, RDC | 53 |
| ASPS, FlexFour | 63.5 |
| Racquet Flex, RDC | 59 - After stringing |
| Racquet Flex, FlexFour | 48 |
| Racquet - In Plane Stiffness | 301.3 lbs/Inch |
| Weight, Grams | 284 |
| Weight, Ounces | 10.02 |
| Balance, mm | 346 |
| Balance, Inch | 13.62 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 10.15 |
| Head Length | 13.13 |
| Head Area, cm2 | 675.2 |
| Head Area, Sq. Inch | 104.7 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .618 |
| Main String Grid | 7.75 |
| Cross String Grid | 10.50 |
| Density (% of head filled with string) | .778 |
| Average Cross String Space | .525 |
| Average Main String Space | .484 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .769 |
| Polar Moment | 315 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 301 |
| Swing Weight, Ounces | 10.62 |
| Swing Weight Calculated | 340.0 |
| Power, RDC | 42 |
| Control, RDC | 61 |
| Manueverability, RDC | 86 |
| Power, Calculated | 1877.2 |
| Head Points | -.94 (negative = head heavy) |
| Head Weight, % | 50.4% |
| Center of Percussion | 20.9 |
| Dwell Time, ms | 8.74 |
| Efective Stiffness - lbs | 27.9 |
| K, Lb/In | 169.8 |
| Recoil Weight | 131.6 |
| Twist Weight | 217.6 |
| End Weight | 100.0 |
| Tip Weight | 186.5 |
| 9 O'Clock | 91.4 |
| 3 O'Clock | 92.4 |
| Butt Cap | 101.6 |
Head Graphene 360 + Gravity Pro
The Gravity Pro is the racquet all 18×20 players have been waiting for!
Why? Great weight, and excellent swing weight right out of the box! For players that think the Prestige models are too stiff, (they are not), this model will provide feed-back that the Prestige damps out through the cap system.
Big hitters will benefit from the 18 x 20 string pattern when going for the “flat, down the line” shot.
You will see all the specifications later on but now let’s talk about the reaction to the binary graphics package that is used on all the Gravity models. One side is Lava, and the other side is Miami Green ( my description) which makes for an exciting pickup reaction!
Head Graphene 360 + Gravity Pro
The excellent stiffness of RDC 60 combines with the dense string pattern to yield an effective stiffness of 30.7.
Now for some fun!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360 + Gravity Pro |
| Reference Tension | 57 lbs - 25.9 kg |
| String | Head Velocity MLT 17 Black |
| Machine Used | True Tension Professional |
| ASPS, RDC | 63 |
| ASPS, FlexFour | 68.5 |
| Racquet Flex, RDC | 60 - After stringing |
| Racquet Flex, FlexFour | 46 |
| Racquet - In Plane Stiffness | 428.6 lbs/Inch |
| Weight, Grams | 328 |
| Weight, Ounces | 11.57 |
| Balance, mm | 326 |
| Balance, Inch | 12.83 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.91 |
| Head Length | 12.85 |
| Head Area, cm2 | 645.2 |
| Head Area, Sq. Inch | 100.0 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .694 |
| Main String Grid | 7.75 |
| Cross String Grid | 10.25 |
| Density (% of head filled with string) | .794 |
| Average Cross String Space | .513 |
| Average Main String Space | .431 |
| Dynamic Tension, Kp, ERT | 40 |
| Dynamic Tension, Lbs/in | 233.7 |
| First Moment, Nm | .824 |
| Polar Moment | 348 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 331 |
| Swing Weight, Ounces | 11.68 |
| Swing Weight Calculated | 348.6 |
| Power, RDC | 39 |
| Control, RDC | 62 |
| Manueverability, RDC | 66 |
| Power, Calculated | 2006.0 |
| Head Points | 5.35 |
| Head Weight, % | 47.5 |
| Center of Percussion | 21.5 |
| Dwell Time, ms | 8.02 |
| Efective Stiffness - lbs | 30.7 |
| K, Lb/In | 201.9 |
| Recoil Weight | 165.8 |
| Twist Weight | 240.4 |
| End Weight | 132.7 |
| Tip Weight | 197.4 |
| 9 O'Clock | 98.6 |
| 3 O'Clock | 99.5 |
| Butt Cap | 131.1 |
Head Graphene 360 + Gravity MP
The new Head Gravity MP seemed like the perfect place to start with this new series of racquets so that is what we did!
We believe this racquet falls between the Prestige and Radical series and will appeal to more players than either of those. Plus, there are two (2) 104 square inch models, the Lite, and S. These are relativley “thin” beam, (Lite and S = 24.4mm) racquets that Head has been missing, in my opinion, for a while.
It has a “flip” color scheme…one side is lava and the other is Miami Green (my word).
Head Graphene 360 + Gravity MP Lava Side
The head shape is a little more round. The weight is 312 grams (11.01 oz) which I think is a little light. The swing weight is 324 kg/cm² ( a good starting point).
The unique fiber layup is designed to “uncoil” at impact contributing to a new kind of power, and hopefully comfort.
The unique fiber layup is designed to “uncoil” at impact contributing to a new kind of power, and hopefully comfort.
The Series consists of a “Pro”, “MP”. “MP Lite”, “S”, and”Lite”. There is a Model Comparison post where you can see all of the racquets in one place.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360 + Gravity MP |
| Reference Tension | 55 lbs - 24.9 kg |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Professional |
| ASPS, RDC | 52 |
| ASPS, FlexFour | 60.5 |
| Racquet Flex, RDC | 59 - After stringing |
| Racquet Flex, FlexFour | 43 |
| Racquet - In Plane Stiffness | 380.1 lbs/Inch |
| Weight, Grams | 312 |
| Weight, Ounces | 11.01 |
| Balance, mm | 342 |
| Balance, Inch | 13.46 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.92 |
| Head Length | 12.85 |
| Head Area, cm2 | 645.9 |
| Head Area, Sq. Inch | 100.1 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio Cross/Mains | .617 |
| Main String Grid | 7.62 |
| Cross String Grid | 10.30 |
| Density (% of head filled with string) | .798 |
| Average Cross String Space | .515 |
| Average Main String Space | .476 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.7 |
| First Moment, Nm | .833 |
| Polar Moment | 340 |
| Torsional Stability | 16 |
| Swing Weight, Kg/cm2 | 324 |
| Swing Weight, Ounces | 11.43 |
| Swing Weight Calculated | 364.9 |
| Power, RDC | 46 |
| Control, RDC | 56 |
| Manueverability, RDC | 71 |
| Power, Calculated | 1932.8 |
| Head Points | .31 |
| Head Weight, % | 49.9% |
| Center of Percussion | 20.8 |
| Dwell Time, ms | 8.82 |
| Efective Stiffness - lbs | 27.6 |
| K, Lb/In | 166,7 |
| Recoil Weight | 143.69 |
| Twist Weight | 229.04 |
| End Weight | 114.6 |
| Tip Weight | 200.3 |
| 9 O'Clock | 99.2 |
| 3 O'Clock | 99.4 |
| Butt Cap | 114.9 |
Head Graphene 360 + Gravity Series Lineup
In addition to individual model specifications we like to do a consolidated series comparison so we can glance at the differences between racquets. Following is that comparison. All the data is taken with strung racquets with a vibration damper but no overgrip.
See the Five Models Compared Here
See Larger Images of Each Model Here
So, what is important in this data? Well, to us, everything or we wouldn’t include it but we like to explain some of the not so obvious numbers.
End Weight: the weight of the butt end of the racquet when using two (2) electronic scales
Tip Weight: the weight of the top end of the racquet when usisng two (2) electronic scales
Why important: this accurately calculates static balance and allows easy maching of multiple racquets
Swing Weight: the higher the swing weight the higher the energy colliding with the ball.
Why important: this is the most meaningful number in terms of momentum into the ball.
InPlane Stiffness: this tell us how stiff the racquet is when a load is apllied to the 3 and 9 o’clock positions.
Why important: a higher number means the racquet is stiff in that direction affecting string bed stiffness.
Stability: this tell us how the racquet reacts to ball impact.
Why important: the higher the number the more power and control that can be contributed to the racquet.
Position 1, 2, and 3: three (3) electronic scales are used to weigh the racquet.
Why important: we can match the rotational inertia of each racquet.
Peak Load: this tells us the peak force of the ball impact on your body. Higher loads contribute to injury.
Why important: we can make adjustments to the string bed stiffness to keep the peak loads safe.
Everything else should be clear but if you have questions please “Ask John”
New Head Graphene 360 Radical! Here Now!
The new Head Graphene 360 Radical has arrived and I have already chosen the one for me!
The four (4) racquets in this series cover every possible player style and the new graphics package will appeal to most players. This is a win-win Radical Series!
Head Graphene 360 Radical Series
Just in case you are wondering which one I have chosen it is the Radical S! Why? I handle a lot of racquets each day and this racquet just “feels” good when I pick it up! Plus the 102 square inch head size fits me fine.
This series is the most impressive Radical Series I have seen in a few years.
You can read the reviews of each of these racquets on this site but you really should come by and take a look and “feel” for yourself.
My setup is going to be this racquet strung with PEEK at 52 pounds. I am going to increase the weight to 315 grams and the swing weight to 315 kg/cm² as well.
I am anxious to start playing again and this is just the racquet to motivate me! Motivate yourself, too! Get one!
This is a comparison sheet of the four (4) models so you can get some idea as to which racquet may suit you!
Head Graphene 360 Radical Series Strung
The Rebel Backpack and Radical 6 Racquet Combi add to the excitment of the new Radical racquets! Complete the package with these bags!
Head Radical for 2019!
The new Head Graphene 360 Radical series continues the “less is more”
As you can see there are four (4) models in the series starting on the left with the “Pro”, “MidPlus”, “S”, and “Power” versions. The obvious concept here is the minimization of graphics, however, not so obvious is the subtle color changes inside the
I have compiled unstrung specifications which are important but not as much fun as racquet to racquet comparison which I will do between this series and the series of last year.
If you are interested in “approximate” strung specifications add 17 grams to the “overall weight” and 30 grams to “swing weight”.
So, until then enjoy the new Radical look!
I will be posting full reviews of each model by the end of the week so check back…and you can stop by the World Headquarters to examine these racquets yourself!
Now You Think of it!
So, it has been a while since you had your racquet strung and you are standing on the court about to receive and you ask yourself; “I wonder when I should get my racquet strung”.
Now is probably not the best time to think of it but if you do simply take a look at the short video for a quick answer;
Accuracy Index…what is it?
For a few years, Racquet Quest has been using an “accuracy index” to clarify and understand how the string bed stiffness at a given location can affect where the ball goes. You may say that is the players skill working…or not!
However, players take heart, we know how the string bed accuracy can and will put the ball where you didn’t intend for it to go!
Our Accuracy Index is predicated on racquet support effectiveness and main and cross string junctions matching the “target tensions”. The natural ratio of the racquet is the basis for the target tensions. The “natural ratio” of a racquet is the difference in main string tension and cross string tension in a freshly strung racquet. For example; the main string tension is 50 and the cross string tension is 38 the “natural ratio” is 76%.
The Efficiency Index is the measure of the stringing machines support capabilities. The lower the number the worse the machine support is, therefore the racquet is under a lot of stress and we know what stress does to everything! It is bad!
https://racquetquest.tennis/wp-content/uploads/2019/02/Vega_16x19_accuracy_.pdf
What Took You so Long?
A lot of players don’t really know how long it takes to string a tennis racquet. Do you?
This is not a quiz but a way to begin the discussion of why it may take us longer to do your tennis racquet and why we may not be able to accommodate certain time requirements. Speed does not take the place of “doing it right”.
What Took You so Long? Doing it Right, that’s what! The entire process!
Putting string in your racquet is part science, part art, part craft, and part habit. What Racquet Quest tries do do is minimize the “habit” part because some habits are awful! I have been presenting at various seminars for over twenty (20) years and I have seen most of the bad habits but they change with the introduction of new tennis racquets and/or tennis string.
I have been testing potential stringers for the USRSA CRT and MRT certification for many years so I get to see every stage of stringer development. But this post is not about that…
What Took You so Long?
Let’s start with the string. Every string we install is first pre-stretched in it’s entire length, about 40 feet. This procedure increases the stability of the string so tension loss is mitigated somewhat. In some materials this will also increase elongation and elasticity. Every string gets this!
Total Time: 3 minutes
Our proprietary software, Racquet Record, keeps data of every racquet we do so we can pull up the last stringing and activate it for the new stringing that is about to take place. If the string is not broken we take current SBS readings to determine stiffness loss over time based on the previous SBS data.
If the racquet is used, and currently strung, a careful examination is performed before the string is removed. The string is removed in a specific pattern to minimize stress on the racquet. The racquet is then cleaned with an effective but harmless chemical and blown “dry” with also removes any grit that may be in a grommet barrel.
Total Time: 5 minutes
Now the racquet can be mounted on the stringing machine, which you will see in the video. By design our machines require additional setup time to assure the supports are properly adjusted. To the casual observer it looks like this will take “forever”… it does not, and it is critical to the stringing result.
Friction is the enemy of a good stringing result so the string holes are aligned with the tension head and with the guide post every string is pulled almost friction free. You will see this in action in the video.
When installing the cross strings a series of string spreaders are used to provide a friction free weaving of the cross string. Does this add a minute or two to the process? Sure, but it is worth it and every racquet we do gets it!
Total Time: 25 minutes Watch the video here
About 25 minutes after the beginning of this process the racquet is ready to come off the machine. Because the racquet did not distort the removal is easy and without stress on the racquet.
After the racquet is strung (the next video) the data acquisition phase begins. This is absolutely essential to player and racquet performance! Almost every property of the racquet is reduced to a “number” so if something needs attention we can associate a number to that property and make the necessary adjustment(s).
Total Time: 15 minutes Watch the video here
Thank you for taking the time to view this post. We hope you enjoyed it and now have a better understanding of what we do!
Our Standard Stringing Process
After seeing “After the String is Strung” some of you wanted to see a “While the String is Being Strung” video. I have several videos of the stringing process but I use them for my own review and to see if there is anything that can be done better.
So, the video(s) will not be “professional” videos and are intended for fun and maybe some understanding of what we do.
Grab a coffee, or something, and enjoy 24 minutes of stringing fun!
Wilson Clash Tour
If you read the Wilson Clash 100 review there is not much to say about the Wilson Clash Tour in terms of graphics because it is exactly the same!
So we can go directly to the differences between the two models. The Tour does have the “word” tour on the racquet but little else in terms of racquet specifications and that is by design.
Typically a racquet will have some little tiny descriptions such as weight, head size, string pattern, etc. but these racquets have none of that. Wilson, with this racquet, wants the player to make all the decisions based on “feel, control, and power” and not be influenced by descriptors. As you might expect this model is a little heavier overall and in swing weight thus the “Tour” designation.
Our Wilson Clash and Clash Tour demo racquets are strung with Luxilon Natural Gut as the main string and Wilson Sensation Plus as the cross string. This combination should maximize the performance of the racquet.
Before we get to the specifications of the Tour model there is another slightly unusual design feature. The grip pallet is not molded onto the frame but is formed by the carbon fiber. This manufacturing technique does not allow for easy (seriously not easy) grip size and shape customization so be certain you get the grip size you need.
Take a look at the following data to see if you think this new concept is worth a try. Based on the feedback we are getting I would say yes, definatley!
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Clash Tour |
| Reference Tension | 58 lbs - 26.3 kg |
| String | Luxilon 125 Gut =M Wilson Sensation Plus =X |
| Machine Used | True Tension Professional |
| ASPS, RDC | 51 |
| ASPS, FlexFour | 63 |
| Racquet Flex, RDC | 47 - After stringing |
| Racquet Flex, FlexFour | 25 |
| Racquet - In Plane Stiffness | 317 lbs/Inch |
| Weight, Grams | 328 |
| Weight, Ounces | 11.57 |
| Balance, mm | 318 |
| Balance, Inch | 12.52 |
| Length, Cm | 68.5 |
| Length, Inch | 27.0 |
| Head Width | 9.91 |
| Head Length | 12.89 |
| Head Area, cm2 | 647.3 |
| Head Area, Sq. Inch | 100.3 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .647 |
| Main String Grid | 7.68 |
| Cross String Grid | 10.44 |
| Density (% of head filled with string) | .799 |
| Average Cross String Space | .549 |
| Average Main String Space | .480 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .822 |
| Polar Moment | 348 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 329 |
| Swing Weight, Ounces | 11.6 |
| Swing Weight Calculated | 341.8 |
| Power, RDC | 39 |
| Control, RDC | 64 |
| Manueverability, RDC | 65 |
| Power, Calculated | 1586.1 |
| Head Points | 7.87 |
| Head Weight, % | 46.4 |
| Center of Percussion | 21.7 |
| Dwell Time, ms | 8.91 |
| Efective Stiffness - lbs | 24.5 |
| K, Lb/In | 163.46 |
| Recoil Weight | 174.7 |
| Twist Weight | 247.8 |
| End Weight | 141.6 |
| Tip Weight | 195.0 |
| 9 O'Clock | 99.1 |
| 3 O'Clock | 96.9 |
| Butt Cap | 140.2 |
Unravelling Athena
Brittany Tagliareni brought this film to my attention a couple of years ago and I have tried to follow the progress since then.
Here is the latest trailer for the film…
Wilson Clash 100
Once in a while words “fit”! Clash fits this new Wilson racquet because it disrupts the trend of “everything stiff”. Luckily this trend is dying and Wilson has, in my view, done a masterful job of expediting that demise with this concept.
Not only does this racquet look good it just feels good in the hand. It is light, maybe too light, but the brain detects something different about this racquet. We all know racquets are all about “the brain”!
In this review you may notice the addition of a couple of specifications. One is “Racquet – In Plane Stiffness”. This is the racquets resistance to”squeezing the sides together. The higher the number the more resistant (stiffer) the racquet is. Another addition to the review is the three (3) weights taken at the sides of the head and at the very bottom (butt cap) of the racquet. This very helpful when matching or customizing a racquet. so I thought we would include it.
Before this racquet is strung it has a noticeable “softness” which is expected given the 52 stiffness (Wilson is not using the defacto device, RDC, for their stiffness rating). However, after stringing, the racquet takes on a different “feel”. It is like the string is pulling all the material components together! I intend to hit with this racquet tomorrow so as right now I have no idea how it will feel.
To get the maximum from this racquet our demo is strung with Luxilon Natural Gut, 125 and the new Wilson Sensation Plus multi-filament with a “wear” wrap. This should be a great setup, so if you want to hit with the latest technology this is it!
For each racquet we do an “Accuracy Index”. This tells us how accurately the ball will come off the string bed when hit at different locations on the string bed. This racquet has an index of 97, which is very good, in the areas of the string bed that show the most failure (breakage). The overall string bed index of 94 is quite good and tells us that the string bed should produce as much accuracy as the players skill allows!
Take look at the following specifications to see if you agree with the player evaluations you may have read.
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Clash 100 |
| Reference Tension | 58 lbs - 26.3 kg |
| String | Luxilon 125 Gut =M Wilson Sensation Plus =X |
| Machine Used | True Tension Professional |
| ASPS, RDC | 56 |
| ASPS, FlexFour | 61.5 |
| Racquet Flex, RDC | 51 - After stringing |
| Racquet Flex, FlexFour | 27 |
| Racquet - In Plane Stiffness | 317 lbs/Inch |
| Weight, Grams | 309 |
| Weight, Ounces | 10.90 |
| Balance, mm | 322 |
| Balance, Inch | 12.68 |
| Length, Cm | 68.5 |
| Length, Inch | 27.0 |
| Head Width | 9.92 |
| Head Length | 12.85 |
| Head Area, cm2 | 646.0 |
| Head Area, Sq. Inch | 100.1 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .650 |
| Main String Grid | 7.50 |
| Cross String Grid | 10.37 |
| Density (% of head filled with string) | .779 |
| Average Cross String Space | .547 |
| Average Main String Space | .469 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .764 |
| Polar Moment | 321 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 306 |
| Swing Weight, Ounces | 10.79 |
| Swing Weight Calculated | 320.4 |
| Power, RDC | 34 |
| Control, RDC | 70 |
| Manueverability, RDC | 83 |
| Power, Calculated | 1562.7 |
| Head Points | 6.46 |
| Head Weight, % | 47.0% |
| Center of Percussion | 21.5 |
| Dwell Time, ms | 8.50 |
| Efective Stiffness - lbs | 26.7 |
| K, Lb/In | 179.49 |
| Recoil Weight | 155.9 |
| Twist Weight | 227.1 |
| End Weight | 126.8 |
| Tip Weight | 181.9 |
| 9 O'Clock | 94.0 |
| 3 O'Clock | 93.9 |
| Butt Cap | 119.9 |
What is Elongation?
In dictionary terms it is:
“the amount of extension of an object under stress.”
In tennis terms, it means the same thing when talking about tennis racquet strings.
How much does a string stretch under the reference tension load or otherwise stretched (impact)? The proliferation of wrist, arm and shoulder injury has brought attention to the property of “stiffness.” The problem is that your stiffness may be different than my stiffness, so there needs to be an “index” associated with each string, in my opinion. I have that data on over 500 tennis strings, but that is just me.
The images show the results of high elongation (left) and low elongation (right) string upon breaking.
Several years ago a player asked me “where is the string that is missing?” Well, it is not missing. The ends you see should be connected!
If the string has little elongation when it breaks there is nothing “pulling” it apart like the high elongation string. So each time you hit the ball, the string either elongates a bunch or it doesn’t.
In the case of the high elongation string, on the left, it absorbs a good portion of the “shock” associated with a hard hit, whereas the low elongation string, on the right, lets your body do the absorbing to a great extent.
So, it is reasonable to use very low reference tensions for low elongation string (35 to 45 pounds; 16 to 20.5 Kg) and higher tensions (45 to 60 pounds; 20.5 to 27.2 Kg) for high elongation strings.
You may ask, “how do I know how stiff a string is?” If you see the word “polyester or co-polyester” it is likely that string wil be stiff compared to natural gut, most nylon based multi-filament construction, and PEEK (Zyex) material. In my opinion, there is no “bad” string just “bad” applications. If in doubt…ask!
Does String Color Matter?
Recently a friend asked “would the same string but different color play differently”?
Of
That is the next step but what about the strings themselves?
Our typical testing provides the following information. You may click on the first slide to see this in a “slide” presentation format…
What’s the Difference? 
Data Points 
Scope 
Elongation/Power Potential 
What’s the difference between power potential of the two strings 
Creep Index 
What’s the difference in Creep? 
COF 
Summary
Carbon Mapping…GPS for Your Ball!
Wilson has introduced a new generation of tennis racquets that do not include GPS but maybe something just as good!
The new Clash tennis racquet is what I am talking about! This new racquet will be in the shop on February 15 and wants to say “hello”!
What makes this such a different racquet is the ability to “adjust” stiffness to the players swing. I have not done a complete evaluation of the racquets so it is premature to go into detail, however, I have felt, and measured the stiffness in the lab. There is a considerable softness!
But where does the GPS thing come in? So, the material layup has been designed to combat the lack of control of very soft racquets, therefore, when you smack the ball the racquet will become stiffer, ergo, control is enhanced and the ball should land at your desired destination! Just like GPS, right?
From the beginning, It has been the mission of Racquet Quest to minimize the “injury” potential of stiff racquets combined with stiff string. We believe this racquet is a step in the right direction!
The Clash racquet comes in two (2) models:
Clash 100 & Clash 100 Tour
The only difference is the weight. The string pattern is 16×19 and slightly “open” for better ball capture.
These racquets are available for pre-order now. We have a limited number arriving on or about February 15 so place your order soon.
I will post more specification details when the racquets arrive so the data is lab “tested” so check back in
Instinct…get it!
The new Head Graphene 360 Instincts are in the shop waiting for your evaluation!
As you can see this new Instinct Series carries forward the “minimalist” graphics concept and a stunning blue color!
If you have been shopping for a new Porsche lately you may have seen a similiar color they describe as “Miami Blue”!
The Instinct Series offers a MP, S, Lite, and PWR (Power) models. And, thankfully, and amazingly, these performance racquets are realistically priced!
I will be adding racquet specifications soon so come back or sign up for notifications so you won’t miss anything!
All Instinct models are at the Racquet Quest World Headquarters so stop by and take a look.
Here is a look the specifications of the Head Graphene 360 Instinct MP…
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Graphene 360 Instinct MP |
| Reference Tension | 55.0 |
| String | Head FXP Tour Blue |
| Machine Used | True Tension Professional |
| ASPS, RDC | 53.0 |
| ASPS, FlexFour | 60.0 |
| Racquet Flex, RDC | 62.0 |
| Racquet Flex, FlexFour | 46.0 |
| Weight, Grams | 315.1 |
| Weight, Ounces | 11.08 |
| Balance, mm | 326.9 |
| Balance, Inch | 12.84 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.88 |
| Head Length | 13.13 |
| Head Area, Sq. Cm | 656.9 |
| Head Area, Sq. Inch | 101.8 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .633 |
| Main String Grid | 7.25 |
| Cross String Grid | 9.50 |
| Density (% of head filled with string) | .676 |
| Average Cross String Space | .500 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 35 |
| Dynamic Tension, Lbs/in | 195.76 |
| First Moment, Nm | .789 |
| Polar Moment, Kg/cm2 | 325 |
| Torsional Stability | 19 |
| Swing Weight, Kg/cm2 | 306 |
| Swing Weight, Ounces | 10.79 |
| Swing Weight Calculated | 333.7 |
| Power, RDC | 46 |
| Control, RDC | 56 |
| Manueverability, RDC | 83 |
| Power, Calculated | 1938.1 |
| Head Points (negative = head heavy) | 5.20 |
| Head Weight, % | 47.6% |
| Center of Percussion | 20.9 |
| Dwell Time, ms (no swing speed) | 8.74ms |
| Efective Stiffness | 28.6 |
| K, Lb/In | 169.87 |
| Recoil Weight | 147.88 |
| Twist Weight | 228.69 |
| End Weight, grams (Play Ready) | 126.7 |
| Top Weight, grams (Play Ready) | 188.4 |
Happy New Year!
2019 here we come! It is going to be hard to top 2018 but we will do it…together!
Together includes Racquet Quest, LLC, You, Racquet makers, string makers, and everyone interested in the growth of tennis.
The mission of Racquet Quest is to provide the best possible playing experience based on data. Data assures you are getting the proper combination of all equipment.
Tennis cannot grow if players can’t play due to injury or discomfort!
Most of our regular customers know this and take advantage of us…you can too!
Happy New Year!
Year End
As this day nears the end and the year sprints to it’s conclusion it is worth the time to reflect on 2018!
This year was the busiest in the history of Racquet Quest, LLC and one of the most rewarding in terms of helping players. Helping players is the “mission” of Racquet Quest so we appreciate the communication with clients that contribute to understanding the goal.
If you have been around Racquet Quest much you know the importance of discussions, some of which may be boring, redundant, or incredibly exciting. It is the boring ones we want to eliminate. We want every discussion to be exciting and helpful so beginning in 2019 we will be requesting comments, suggestions, and participation from you the readers of this and other posts. Be assured that every comment will be treated with “care” and responses will be as meaningful as we can make them.
All of our clients are special and we thank each of them for letting us help their game. Of course there are “Very Special” clients!
Brittany Tagliareni is one very special player. Brittany is Autistic and plays at a very high level in tournaments around the world. I know you have read about Brittany on this site so we will not go into detail except to say Brittany has been an inspiration for me to become better in what I do each day. Period!
We want everyone to be inspired and we hope it can lead to a healthier life and a better tennis game. Please contrbute your inspirational story to our readers. Here are just a few of the people that made 2018 so terrific…
Robert, Sophie, Aleks 
New Logo 
Ela 
Dr. Zarda and The ZSCS Prototype 
John 
The most famous Joe Falzone! 
“Champion” 
Jack Anthrop & Harrison Gold Junkanoo Bowl 
Samantha 
Madeline 
Omar…happy! 
String Stiffness 
Lachlan 
Eric & Carine 
Ready Racquets 
Jack after removing string from 40 racquets 
IT Support Team 
Our Package Designer 
Carine & Barbara in France…not 2018
Racquet Quest is looking forward to 2019 and we ask that you join us is making 2019 an incredible year for you and your tennis.
Thank you to everyone that made this year, 2018, a very special year! I can’t wait to see what we can do in 2019!
A Little Down Time!
To the thousands of you that tried to view the Racquet Quest site in the last 65 hours I apologize for the down time! To the 2 or 3 of you ( I know who you are) that did not try to view the site I also apologize!
The site is up and running normally so now is a good time to make a comment and suggestions for new content.
Thank you to all the new subscribers!
Weight is Your Friend!
Is this instance we are talking about racquet weight. Not the few pounds we put on yesterday, Thanksgiving Day!
In the early 1990’s we made a tennis racquet which weighed slightly over 7 ounces. Awesome, some said! This racquet traveled along with the standard weight racquets in the line and was available for anyone to hit with.
“Hit” in this case is a misnomer because the mass of the racquet was not enough to get the ball over the net in most cases! Instead of a “hit” it was like a light “shove”!
With out a doubt the weight of a racquet must be “usable”. Take a look at these brief warm-up videos to see weight in action then we will find out how much these racquets weigh and the swing weight…
This is a Wilson Blade 98 18×20 pattern. Racquet weight is 329 grams (11.61 Oz.) with a swing weight of 332 kg/cm^2.
Next let’s take a look at a different player…
This is a Head Radical with the Pro Cap System creating a racquet that weighs 340 grams (11.99 ounces) with a swing weight of 349 kg/cm^2.
It is obvious that both payers are swinging the racquet with gusto and it should be obvious that the racquets are stable on impact and this stability is necessary for power and control.
So the next time your oppponent asks if you have “gained weight” it will because the ball is coming at them with more “heaviness”! And you can repsond “yes!” with a smile on your face! Just like Robert, Sophie, and Aleks!
Head Graphene 360 Extreme
If you can’t get by Racquet Quest to take a look at this exciting new racquet just take a look at this video!
The specifications will be posted here as soon as possible, but in the meantime…
You Have Been Waiting for These!
You may not know it but you have been waiting for these!
Head continues with thier anniversary edition parade! It seems twenty-five years is a good time to re-introduce the racquet(s) that made history then!
Head Radical 107
Head Radical 98 Limited Edition
The Head Radical 107 OS is a remake of the Andre Agassi racquet that is true to the characteristics of the era! Great weight, perfect flex, workable swingweight, a 18×19 string pattern, a 107 square inch head, and minimal graphics! This may be the purest example of a remake I have ever seen. It even comes with the rubber band vibration dampers Andre used!
The Head Radical 98 MP is the newer racquet geometry and 98 head size. The graphics reach back twenty-five years for the colors but the design is definately contemporary. Plus, this racquet accepts the Head Pro Player Cap System grommet set. Yes, that means you can turn this Radical into a “beast” just like the previous versions!
I will be posting all the specifications of both of these as soon as possible but they are in the shop so please come by and take a look, and feel, for yourself. These are limited edition racquets.
A New Logo!
After all these years of the old “RQ” it is time for a new look!
Please ket us know if you like the new look!
Jack Anthrop Scores Big in Nassau!
Congratulations to Jack for his Finalist finish in the Junkanoo Bowl in Nassau!
Jack has been playing ITF events and was a qualifier for this tournament. Not only did he qualify, Jack went on the finals where he put in a great three (3) set effort against Harrison Gold, 6-7,6-2,5-7!
Jack Anthrop & Harrison Gold
Junkanoo Bowl
Well done, Jack! Congratulations
Meet Jennifer
Jennifer walked into the World Headquarters of Racquet Quest the other day and asked to have her racquets strung. Nothing unusual about that, of course.
I looked a the racquets in her hand and thought to myself…” Well, where are they?”
In her hands were two (2) Head You Tek IG Prestige Mid racquets! If you don’t remember these, they are the pinnacle of the Head Performace series racquets. The head size is 93 square inches; the weight is 350 grams (12.35 ounces), with a swing weight of 309 kg/cm2 (10.9 ounces), and a racquet flex of 64 RDC units.
This is a great racquet for sure, but I don’t see many anymore in the good condition as these are. One needed a grommet set, but that was all.
The reason I mention this is to reassure tennis players that they are capable of using racquets they normally scoff at including a comment “I am not good enough to use that!” A lot depends on what you want to do with the racquet. In Jennifer’s case, she wants to get to the net as quickly as possible, and the nice recoil weight of 146.1 makes this a good racquet at the net! The low swing weight enhances the “mobility” of the racquet which also means this is not a particularly “powerful” racquet.
The new Head Graphene Touch Prestige Mid is still 93 square inches but now has a 16×19 string pattern.
If you are interested in hitting with a Head Graphene Touch Prestige Mid, our demo is strung with Babolat VS Touch natural gut which represents the purest combination I can think of!
Thank you, Jennifer, for giving me an example of what tennis players are capable of!
Big Bag Blowout…Again!
This seems to be a semi-annual event but that’s OK!
This event is a little different though!
Every bag regardless of size is only $60.00! This is extraordinary but we need the room.
Most bags are Head or Wilson, some are 6 racquet bags some are 12 racquet bags. It makes no difference!
Walk in with three (3) 20’s and walk out with a bag worth twice that much!
Hurry because this event is for in-stock bags only and the supply while taking up a lot of room, is limited!
This picture is not representative of all the bags. Call for a quick update on available bags!
What is “Best Overall Performance”?
In our “Recommended Stringing Frequency” calculator we state that this frequency is to get the best possible performance from your racquet. But, what exactly is “best performance”?
To establish this we need to take you, the player, out of the picture for a moment and concentrate on the racquet and string setup. the reason is simple: no two players strike the ball the same way.
We start with “Swing Weight” which is the most important dynamic property of a racquet. So a higher swing weight will contribute to power and stability, thus performance.
Overall weight is important because you need to be able to get the racquet to the court and out of your bag! Heavier racquets contribute to energy, stability, and comfort.
Effective Stiffness is important because it represents the stiffness of the string bed (SBS) and the racquet stiffness (xxRA, or something like that). This number represents the impact each time you strike the ball. The higher the number, the stiffer, of course.
Of the four (4) things mentioned above we can control the string bed stiffness with ease. One of the easiest methods is to string your racquet regularly to maintain the effectiveness of the elongation of the string being used. Elongation relates to energy return in a string and while strings will stay resilient for a long time a well-worn string takes a while to return energy to the ball.
You, the player, of course, determine performance so when using the SFR you can enter a high UTR or Style rating or a low UTR or style rating if maximum performance is not required.
New Head MXG 1
Head is introducing two (2) new racquets to the MXG Series, and this is an excellent thing in my opinion! It is not that we need a bunch of new racquets, but this signals a commitment to the MXG concept.
In case you don’t know, the MXG Series racquets incorporate a “string suspension system” (my words) into the throat of the racquet. The most notable of this system is the bright silver paint. However, the most important function(s) is the increase in main string length across the entire throat area and torsional stiffness for control. We now have ten (10) main strings that are the same length in the throat, and this does contribute to “power.”
The Head MXG 1 is a 98 square inch head with a thin beam (22mm) that puts it in the “player” category, but it may need additional weight for big hitters. You will see all the specifications below. If you are a player and have shied away from the MXG for head size reasons, this is for you!
Head MXG 1
The MXG 1 demo is available now. Call to reserve it!
The new MXG 1 is available for pre-order and will available May 11, 2018.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head MXG 1 |
| Reference Tension | 53 |
| String | Head Velocity MLT 17 |
| Machine Used | True Tension Pro |
| APPS, RDC | 50.0 |
| ASPS, FlexFour | 59.0 |
| Racquet Flex, RDC | 65 |
| Racquet Flex, FlexFour | 48 |
| Weight, Grams | 312 |
| Weight, Ounces | 11.01 |
| Balance, mm | 319.0 |
| Balance, Inch | 12.56 |
| Length, Cm | 68.5 |
| Length, Inch | 26.986 |
| Head Width | 9.51 |
| Head Length | 13.50 |
| Head Area, cm2 | 649.9 |
| Head Area, Sq. Inch | 100.7 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .593 |
| Main String Grid | 7.20 |
| Cross String Grid | 9.37 |
| Density (% of head filled with string) | .658 |
| Average Cross String Space | .490 |
| Average Main String Space | .445 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.16 |
| First Moment, Nm | .762 |
| Polar Moment | 320.0 |
| Torsional Stability | 15 (the difference between polar moment and swing weight. Higher is better) |
| Swing Weight, Kg/cm2 | 305 |
| Swing Weight, Ounces | 10.76 |
| Swing Weight Calculated | 317.5 |
| Power, RDC | 51 |
| Control, RDC | 51 |
| Manueverability, RDC | 83 |
| Power, Calculated | 1996.9 |
| Head Points | 7.40 |
| Head Weight, % | 46.6% |
| Center of Percussion | 21.5 |
| Dwell Time, ms | 9.00 |
| Effective Stiffness | 28.3 |
| K, Lb/In | 160.26 |
| Recoil Weight | 157.54 |
| Twist Weight | 211.48 |
After the String is Strung!
I have often wondered what players know about the “stringing” process and in particular what goes on after the “string is strung”. So, while Madelyn was here she decided to video me doing what we do after each racquet is strung and just coming off the machine.
Had I known we were going to do this I might have dressed up a little, emptied the trash and fixed the crack in the wall behind the RDC! But I didn’t.
This video is offered as a “real-time” view of what we do with every racquet and is intended for information and fun only. If you have any questions please let us know…now enjoy the movie!
Congratulations Sophie!
A huge congratulations go out to Sophie Williams for her terrific run at the recent Easter Bowl in Indian Wells, Ca.!
Sophie played the finals against the number 3 seed Elena Yu…
Having the experience of making the Girls’ 12s final last year, Eleana Yu of Mason, Ohio, said she only had to fight a moderate case of nerves as the No. 3 seed won the Girls’ 14s USTA gold ball and her first Adidas Easter Bowl national title with a 6-1, 6-0 win over No. 7-seeded Sophia Williams of Charleston, S.C.
“Having been in the final before really did help,” said the 13-year-old Yu. “I did feel a little nervous at the start, but once I found my rhythm it was fine and I just felt really confident. I think my opponent was more nervous, but the match was definitely closer than the score indicated.”
Sophie’s great result at the Easter Bowl continues her recent extraordinary results at tournaments around the country. Below is Sophie holding the first place trophy of a previous tournament.
Sophie, the Winner, again!
If you have been to Racquet Quest in the past several years, you have probably seen some of Sophie’s forty-five (45) racquets either in “process” or being prepared to ship to her. Sophie is left-handed, so all the leather grips and overgrip is wrapped left-handed, and each racquet is “sequenced”. All of the racquets are “matched.” so the only thing that is different is the string bed stiffness (SBS).
Even racquets that are done on the same day may have slightly different string bed stiffness numbers due to the time between racquet number one and racquet number eight. Sequencing indicates in what order the racquets can be used.
That may seem like a lot of racquets, but if you play as many tournaments as Sophie you need a few!
When Sophie is in town, she is either at the USTA Center or training with Robert Kendrick at the Winter Park Racquet Club.
Congratulations, Sophie!
Mr. Dailey Makes a Visit!
The Racquet Quest World Headquarters had the pleasure of having Curt Dailey, CEO of LaserFibre Strings, visit today!
Racquet Quest, LLC will be doing a little evaluation work on LaserFibre string made in the United States! LaserFibre is the only string supplier committed to making all of their string products in the United States. Right now this is not the case, but they are headed in that direction.
Curt has been in the tennis business for many years and is trying hard to bring updated string products to the market.
Welcome to Racquet Quest, Curt!
What Keeps Us Going?
Have you ever wondered what keeps the Racquet Quest World Headquarters going? I can’t imagine why you would, but here it is anyway!
Power!
These are made in France, of course, so they are good for you, and after work, they pair up nicely with a good Bordeaux!
And Now This…
In the words of Lord Kelvin (May 1883) “When you can measure what you are speaking about, and express it in numbers, you know something about it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind; it may be the beginning of knowledge, but you have scarcely, in your thoughts advanced to the stage of science.”
That is why every racquet we do has over fifty (50) numbers attached to the finished data. Most of these numbers will remain unknown to the client, but for us, it is imperative that we know them.
Numbers Matter!
Which leads me, again, to this very important discussion.
Every day we see a statement from tennis string manufactures claiming, or suggesting, their string is the “softest ever tested” and other claims. What the heck is “soft” anyway? There is a lot more to it than meets the eye so we have done significant analysis on bunches of string and can now quantify “soft” as it relates to tennis string.
What is “soft”?
In 1994 I did a presentation for the USRSA in Atlanta. What was the topic?
“Understanding String.”
It is now 2016, and we are still trying to understand string! Especially “soft” polyester based string.
In 1994 PolyStar was the only polyester based string I was familiar with. Since then there are dozens of offerings from anyone that can afford to purchase from manufacturers and market the string. If you have a desire to do it, I applaud you!
In 1989 I started testing string and calculating “power potential.” Why “power potential”? Because “modulus,” “elongation” and “elasticity” didn’t get to the bottom line of string performance quickly enough! The steps to arrive at power potential are many.
For the testing, several calculations take place including “stretching” the string as in a ball impact. The difference between the first calculation and the “stretched” calculation is the power potential!
I have calculated hundreds of power potentials but have not until now quantified “soft.”
I think now is the time!
Under the direction of Dr. Rich Zarda, we have done a tremendous amount of work on this issue so we can now distill this work into the following explanation.
So, what is a “soft” tennis string?
Strings in a tennis racquet carry the ball impact load in two ways:
1) Via the pre-load string tension placed in the strings caused by a stringing machine (and the racquet frame “holding” those tensions in place) and
2) Via additional tensions that develop in the same string caused by the elongation of the strings as they deflect with ball impact.
Both of these conditions occur simultaneously and contribute to the string bed stiffness (SBS, units of lbs./in). Racquet technicians measure SBS by applying a load to the center of a supported string bed and measuring the resulting deflection. Dividing the load by the deflection provides the SBS (lbs./in). The lower the SBS, the more power you have (power here is the ability of the ball to easily rebound from the string bed), but the less control (presumably); the higher the SBS, the less power you have but, the more control you have (presumably).
One more point about SBS: the lower the SBS, the less the load your body will feel for a given swing. But for an SBS too low (less than 50-80 lbs./in), balls will be flying off your racquet going over the fence; and for an SBS too high (greater than 200-240 lbs./in), the racquet will hit like a board with significantly less ball rebound. So the most common SBSs are between 100-200 lbs./in: a balance between control and power.
As already expressed, SBS is a function of the pulled string tension and the string elongation. Here is what is interesting: For large string elongations (for example, greater than 15%) and reasonably pulled string tensions (greater than 30-40 lbs.), SBS only depends on the pulled string tension, and it does not depend on string elongation. Additionally, for this condition, SBS, for these high elongation strings, does not change as a ball is hit with more impact.
But for a string bed with low elongation strings (less than 5%) under low pulled tensions (less than 20 lbs., or tensions that have been reduced due to racquet deformation and/or string tension relaxing with time), the SBS additionally depends on the string elongation and will significantly increase, in a nonlinear ever-increasing way, for harder ball impacts.
In order to achieve a repetitive feel for a player when hitting with a racquet, it is best to have an SBS that is independent of an increasing ball impact force. This will lead to a more consistent playability of the racquet, which includes a more repetitive feel. This desired “feel” implies using high elongation strings (greater than 10%). If low elongation strings are used (less than 4%), the SBS will significantly increase as the ball impact force increases, resulting in a racquet feeling “boardy” for higher impact loads. And low elongation strings will cause un-proportionally increasing load into the body.
As you can see by the graph, elongation contributes to SBS in a big way. The red line indicates a stiff string, about 4%, and the blue line indicates a “soft” string, about 15% elongation. You can see the loads increase dramatically as the impact increases. So the harder the hit the higher the loads on the body.
So to the question asked at the start “What is a soft tennis string?” In the context of the SBS discussed above, I would suggest that a soft tennis string is one whose elongation is 10-15%, and a stiff tennis string is 4-6%. And any string under 4% should be categorized as ultra-stiff.
String elongation (soft, stiff, ultra-stiff), stringing machine strung tension, and string pattern(s) all contribute to SBS and SBS is an important measure of how a racquet plays and should be adjusted for an individual player, stiff and ultra-stiff strings can lead to less-repeatable racquet performance and player injury.
Soft = 10 -15% Elongation Power Potential Range = 10.0 – 16.0
Stiff = 4 – 6% Elongation Power Potential Range = 4.0 – 7.0
Ultra Stiff = Less than 4% Power Potential Range = .65 – 3.96
Why Offer Racquets?
My answer is simple! To give you the very best performance you can get from your racquet dollar!
You are probably thinking “aren’t I getting that now from my online purchase?”
Probably not! I see a lot of racquets from online sources and what I see convinced me that you need to have another option! The issues I see are typically poor string selection and really poor string installation. String and stringing are very important, and you deserve better! We offer racquets, in a limited sort of way, so you are getting what you expect!
How do I select what brands I will offer? Well, I review almost every racquet made either before or right after they are introduced and this review yields a great deal of information that is not normally known to the online consumer.
The Head Selection!
Some New Wilson’s
That is why you will see Head and Wilson racquets when you visit the World Headquarters of Racquet Quest. This selection does not mean other brands are not worthy of your consideration, and we are pleased to discuss all brands and offer them when appropriate.
Our racquet prices are attractive and the special service we offer adds to the value of your purchase.
Even if you just have a racquet question, we will be very pleased to help!
Monogut ZX = Zero Polyester
Ashaway MonoGut ZX Family
Ashaway, RI – “While it is certainly premature to proclaim the demise of polyester and co-polyester monofilament strings,” said Ashaway Vice President Steve Crandall in a newly published column, “I think it is certainly fair to say that the tide is against them, and that a counter trend towards “Zero Poly” monofilament strings is gaining momentum among tournament and other high-end players.”
In addition to growing complaints of arm pain and wrist pain and even injury, Crandall claims players are simply not reaping the benefits touted by the makers of these ultra-stiff high tech strings. “More and more high-end players are coming to realize they can get equal, if not better performance from newer zero poly monofilament alternatives, along with better feel, better playability, and reduced risk of injury,” he said.
In terms of spin generation, polyester’s main claim to fame, Crandall cited technical reports by Australian physicist Rod Cross and Tennis Warehouse University’s Lindsay Crawford, which demonstrate that topspin is generated not by the stiffness of a string material, but its ability to move laterally and snap back when striking the ball, characteristics shared by non-poly alternatives.
This is the case with Ashaway’s own MonoGut® ZX strings, Crandall claimed. “Here is a material that, 1) is nearly as slippery as polyester, and 2) has much better dynamic stiffness,” he said. “This means it can generate almost as much spin as poly, but with more power. Not to mention that it plays softer and offers much better feel. This is a combination people are beginning to notice.”
Crandall also cited comments by leading stringer John Gugel, who he quotes as saying, “To get the benefit of poly you have to hit the ball really hard. That’s when the string bed becomes non-linear and much stiffer. You can see it with professional players. They hit the ball just about as hard as they can every single time. And there are unintended consequences to that.”
Gugel said he, too, finds that players are increasingly looking for alternatives, and that they are very pleased with the performance of MonoGut ZX. “Most of the players that I introduce MZX to are a little bit skeptical of what it can do. However, after hitting with it, it is the consistency of string bed stiffness that they like. They find the spin as good as polyester and some find it better.”
Gugel said he actively discourages junior players from using polyester and that he has “a lot of juniors using 100% MZX and playing at a very high level.” Hybrid stringing is also a popular alternative, he added, with one of the best combinations being natural gut in the mains and MZX Pro in the cross strings.
Ashaway Racket Strings are made by Ashaway Line & Twine Mfg. Co., the only U.S. manufacturer of string for squash, tennis, racquetball, and badminton. Operated by the Crandall family since 1824, Ashaway has been making racquet strings since 1949, and is responsible for several important technical innovations. Ashaway has been the Official String of USA Racquetball for more than ten years, and is also the Official String of Professional Tennis Registry. Ashaway Line & Twine Mfg. Co. also makes braided products for medical and industrial applications. For more information visit http://www.ashawayusa.com. Zyex is a registered trademark of Zyex Ltd.
For additional product information, contact:
Ashaway Line & Twine Mfg. Co.
PO Box 549
Ashaway, RI 02804 USA
Tel: (800) 556-7260 (U.S. only) or +1 (401) 377-2221
Fax: +1 (401) 377-9091
Website: http://www.ashawayusa.com
Facebook: https://www.facebook.com/Ashaway/
Twitter: @Ashaway1824
Email: sales@ashawayusa.com
Welcome to Racquet Quest!
Racquet Preparation Specialists as close as 407.491.4755 or 407.494.4702!
Appointments are accepted and encouraged.
We are glad you are visiting our site. We encourage you to ask any tennis, racquet, and string questions, post ideas, share tennis and racquet related stories with other tennis and racquet enthusiasts.
While visiting our website check the periodic specials page where our racquet analysis and stringing services specials are posted.
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There must be hundreds of web sites and forums that discuss tennis and tennis racquets specifically.
Racquet Quest is different…
I have spent over forty (40) years working with racquets; from designing to manufacturing to stringing to customization, plus retail and anything in between! I know that each racquet and player combination is unique. So, the racquet specifications must be exclusive to the player.
Even if you go no further into this site I want you to know that you, the player, is what this is all about. Some fun, some ideas, some questions, some suggestions, and most importantly, your involvement.
I hope you will enjoy your visit!
Racquet Quest, LLC
