Category Archives: Gravity
A Long Head Gravity Tour 98
As a high performance racquet technologies business, we have requests for everything imaginable, some not so imaginable! Long racquets are at the top of the list.
Full Custom Head Gravity Tour 98!
Here is a review of a Head Gravity Tour 98 2025 SMU that is 27.75 inches long/70.485cm. See if you can determine which property is most affected by the length.
You can see the string properties here as data taken on our Questron.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Gravity Tour 98 2025 SMU |
| Reference Tension | 57 |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 52 |
| String Bed Stiffness -FlexFour | 61.0 |
| Strig Bed Stiffness - SBS | 50.6 |
| String Bed Stiffness - ERT | 37 |
| Racquet Flex, RDC | 58 |
| Racquet Flex, FlexFour | 43 |
| Racquet - In Plane Stiffness | 429.5 |
| Weight, Grams | 335 |
| Weight, Ounces | 11.82 |
| Balance, mm | 331 |
| Balance, Inch | 13.03 |
| Length, Cm | 70.5 |
| Length, Inch | 27.756 |
| Head Width | 9.86 |
| Head Length | 12.71 |
| Head Area, cm2 | 633.6 |
| Head Area, Sq. Inch | 98.2 |
| Beam Height @ Grip, mm | 21.3 |
| Beam Height @ Mid, mm | 21 |
| Beam Height @ Tip | 21.5 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.6 |
| Beam Width @ Mid, mm | 10.8 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .650 |
| Main String Grid Inch/mm | 7.72/196.1 |
| Cross String Grid Inch/mm | 10.25/260.4 |
| Density (% of head filled with string) | .785 |
| Average Cross String Space | .546 |
| Average Main String Space | .464 |
| Dynamic Tension, Kp, ERT | 37 |
| Dynamic Tension, Lbs/in | 206.94 |
| First Moment, Nm | .858 |
| Polar Moment | 362 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 344 |
| Swing Weight, Ounces | 12.13 |
| Swing Weight Calculated | 367.0 |
| Power, RDC | 49 |
| Control, RDC | 52 |
| Manueverability, RDC | 57 |
| Power, Calculated | 2096.5 |
| Head Points | 6.77 |
| Head Weight, % | 47% |
| Center of Percussion | 21.44 |
| Dwell Time, ms | 6.492 |
| Efective Stiffness - lbs | 27.42 |
| K, Lb/In | 166.67 |
| Recoil Weight | 167.7 |
| Twist Weight | 242.8 |
| End Weight | 131.6 |
| Tip Weight | 202./6 |
| 9 O'Clock | 94.7 |
| 3 O'Clock | 94.9 |
| Butt End | 144.5 |
| COF, Main | .339 |
| COF, Cross | .300 |
Let’s Look at a Hybrid Graph
A client asked, ” Would putting natural gut in the cross string instead of the main string create a softer string bed?”
That question is the precursor to the graph below, so I will let the video tell the story.
This graph does not reflect the stiffness of polyester string. So, in any format, a natural gut may help soften the string bed if polyester is used.
Head Gravity Team 2025
It is rare to have a 104 square inch racquet excite so many! The Head Gravity Team is doing just that! Maybe because it takes on the myth that racquets over 100 square inches are for “sissies,” or one must be old to play with a racquet that size, etc., etc.
Typically, a review like this focuses on performance metrics. However, we can not continue without acknowledging this racquet’s incredible look.
First, the racquet flex of RDC 58 is nearly perfect for those wanting to be “more in control” rather than just seeking power. So, if you want to enhance your performance but don’t want to go to a smaller head size, this may be the racquet for you.
Remember that this racquet represents a great starting point, and customization can change some properties as your game improves!
Please take the Head Gravity Team 2025 out for a test and then tell me what you think of a 104-square-inch racquet!
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Gravity Team 2025 |
| Reference Tension | 55 |
| String | MonoGut ZX Pro |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 47 |
| String Bed Stiffness -FlexFour | 55,2 |
| Strig Bed Stiffness - SBS | 42.7 |
| String Bed Stiffness - ERT | 34 |
| Racquet Flex, RDC | 58 |
| Racquet Flex, FlexFour | 37.7 |
| Racquet - In Plane Stiffness | 416.0 |
| Weight, Grams | 299 |
| Weight, Ounces | 10.55 |
| Balance, mm | 340 |
| Balance, Inch | 13.39 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 10.12 |
| Head Length | 13.12 |
| Head Area, cm2 | 672.4 |
| Head Area, Sq. Inch | 104.2 |
| Beam Height @ Grip, mm | 22.5 |
| Beam Height @ Mid, mm | 23 |
| Beam Height @ Tip | 23 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.6 |
| Beam Width @ Mid, mm | 10.8 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio | .617 |
| Main String Grid Inch/mm | 7.72/196.1 |
| Cross String Grid Inch/mm | 10.25/260.4 |
| Density (% of head filled with string) | .759 |
| Average Cross String Space | .513 |
| Average Main String Space | .483 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.16 |
| First Moment, Nm | .792 |
| Polar Moment | 323 |
| Torsional Stability | 17 |
| Swing Weight, Kg/cm2 | 306 |
| Swing Weight, Ounces | 10.79 |
| Swing Weight Calculated | 345,6 |
| Power, RDC | 45 |
| Control, RDC | 56 |
| Manueverability, RDC | 83 |
| Power, Calculated | 1868.4 |
| Head Points | .94 |
| Head Weight, % | 49.6% |
| Center of Percussion | 20.7 |
| Dwell Time, ms | 6,83 |
| Efective Stiffness - lbs | 26.0 |
| K, Lb/In | 150.6 |
| Recoil Weight | 136.1 |
| Twist Weight | 227.7 |
| End Weight | 108.6 |
| Tip Weight | 189.6 |
| 9 O'Clock | 90.3 |
| 3 O'Clock | 87.5 |
| Butt End | 121.4 |
| COF, Main | .372 |
| COF, Cross | .304 |
Head Gravity MP L 2025
Wow! The new Head Gravity 2025 series keeps getting better! This is the new Head Gravity MP L and it hits the mark on many properties!
Head Gravity MP L 2025
The “MP” indicates it has a mid-plus head size of 100 square inches. The “L” means it is lighter than the “MP,” but everything else is the same head size and string pattern.
Why do we believe this is such a good racquet?
- Easy to customize as the player progresses
- Very good 16×20 string pattern spacing that creates a good, effective stiffness
- Terrific RDC flex of 59, making it perfect for precision and comfort
- The modified “cap” grommet system protects the string and racquet from “ball to foot” pick-up. This is important!
The table shows all of the properties, but it does not include the very important graphics!
If you are an aspiring junior or adult player, this is a racquet you must try.
| Manufacturer | Head |
|---|---|
| Racquet Model | Head Gravity MP L 2025 |
| Reference Tension | 55 |
| String | PEEK 7710 |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 49 |
| String Bed Stiffness -FlexFour | 55.9 |
| Strig Bed Stiffness - SBS | 45.8 |
| String Bed Stiffness - ERT | 34 |
| Racquet Flex, RDC | 59 |
| Racquet Flex, FlexFour | 47 |
| Racquet - In Plane Stiffness | 446.8 |
| Weight, Grams | 307 |
| Weight, Ounces | 10.83 |
| Balance, mm | 343.0 |
| Balance, Inch | 13.50 |
| Length, Cm | 68.6 |
| Length, Inch | 27.008 |
| Head Width | 9.93 |
| Head Length | 12.86 |
| Head Area, cm2 | 646.5 |
| Head Area, Sq. Inch | 100.2 |
| Beam Height @ Grip, mm | 21.0 |
| Beam Height @ Mid, mm | 22.3 |
| Beam Height @ Tip | 22.8 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.6 |
| Beam Width @ Mid, mm | 10.8 |
| Beam Width @ Tip, mm | 12.2 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 20 |
| Ratio | .616 |
| Main String Grid Inch/mm | 7.65/194.3 |
| Cross String Grid Inch/mm | 10.25/260.4 |
| Density (% of head filled with string) | .764 |
| Average Cross String Space | .516 |
| Average Main String Space | .464 |
| Dynamic Tension, Kp, ERT | 34 |
| Dynamic Tension, Lbs/in | 190.16 |
| First Moment, Nm | .822 |
| Polar Moment | 332 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 314 |
| Swing Weight, Ounces | 11.08 |
| Swing Weight Calculated | 361.2 |
| Power, RDC | 45 |
| Control, RDC | 55 |
| Manueverability, RDC | 77 |
| Power, Calculated | 1856.4 |
| Head Points | -.16 |
| Head Weight, % | 50.1% |
| Center of Percussion | 20.5 |
| Dwell Time, ms | 6.69 |
| Efective Stiffness - lbs | 26.8 |
| K, Lb/In | 157.1 |
| Recoil Weight | 135.1 |
| Twist Weight | 225.7 |
| End Weight | 109.6 |
| Tip Weight | 196.3 |
| 9 O'Clock | 95.0 |
| 3 O'Clock | 88.7 |
| Butt End | 122.2 |
| COF, Main | .380 |
| COF, Cross | .342 |
Racquet Quest, LLC
