Category Archives: PEEK

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!

Take a look at the String 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!

ManufacturerPrince
Racquet ModelPrince Vortex 300
Reference Tension56 lbs - 25.4kg
String
Victrex 7718
Machine UsedTrue Tension Professional
Static
ASPS, RDC45
ASPS, FlexFour58.5
Racquet Flex, RDC59 - After stringing
Racquet Flex, FlexFour40.0
Racquet - In Plane Stiffness526.3 lbs/Inch
Weight, Grams322
Weight, Ounces11.36
Balance, mm320
Balance, Inch12.60
Length, Cm68.6
Length, Inch27.008
Head Width9.94
Head Length12.94
Head Area, cm2652
Head Area, Sq. Inch101.1
Number of Main Strings14
Number of Cross Strings21
Ratio Cross/Mains.512
Main String Grid7.30
Cross String Grid9.50
Density (% of head filled with string).686
Average Cross String Space.452
Average Main String Space.521
Dynamic
Dynamic Tension, Kp, ERT32
Dynamic Tension, Lbs/in176.98
First Moment, Nm.790
Polar Moment336
Torsional Stability17
Swing Weight, Kg/cm2319
Swing Weight, Ounces11.25
Swing Weight Calculated329.7
Power, RDC47
Control, RDC52
Manueverability, RDC74
Power, Calculated 1921.1
Head Points7.24
Head Weight, %46.6
Center of Percussion21.7
Dwell Time, ms9.48
Efective Stiffness - lbs30.2
K, Lb/In144.23
Recoil Weight165.41
Twist Weight237.56
End Weight 134.5
Tip Weight 189.0
9 O'Clock96.2
3 O'Clock96.1
Butt Cap131.4
Coefficient of Friction: M.400
Coefficient of Friction: X.262

 

 

Prince Phantom 107G!

Prince!  What can you say about the brand that “normalized” over sized racquets!

So, instead of talking about “what was” we will talk about “what is!”  And “what is” is exciting, I think!  With so many really good tennis racquets to choose from why would you choose a Prince racquet?  With this review we will explore the reasons you may want to consider it!

THE PRINCE PHANTOM 107G

Prince Phantom 107G

If this racquet had a high gloss finish and some green lines instead of the current matt finish you could not tell it from the original Prince Graphite.  In other, words it looks terrific.

The beam tapers slightly from about 17.5mm at the top of the grip up to about 21mm at the tip, but by just looking you would say it is a straight  beam design.  The proportions of the racquet are “classic” and the “torsion bar” in the throat contributes to that classic look.

And speaking of classic, the grip shape and the “torsion resistance system” at the 10 and 2 o’clock positions are classics!

So, take a look at the other specs of this racquet and if you like what you see come by at take it for a “demo”

ManufacturerPrince
Racquet ModelPrince Phantom 107G
Reference Tension58 lbs - 26.3 k2
String
Victrex 224
Machine UsedTrue Tension Professional
Static
ASPS, RDC50
ASPS, FlexFour62
Racquet Flex, RDC61 - After stringing
Racquet Flex, FlexFour51
Racquet - In Plane Stiffness425.5 lbs/Inch
Weight, Grams333
Weight, Ounces11.75
Balance, mm324
Balance, Inch12.76
Length, Cm68.6
Length, Inch27.008
Head Width10.25
Head Length13.25
Head Area, cm2688.4
Head Area, Sq. Inch106.7
Number of Main Strings16
Number of Cross Strings19
Ratio Cross/Mains.652
Main String Grid8.00
Cross String Grid10.43
Density (% of head filled with string).783
Average Cross String Space.550
Average Main String Space.500
Dynamic
Dynamic Tension, Kp, ERT33
Dynamic Tension, Lbs/in184.57
First Moment, Nm.830
Polar Moment342
Torsional Stability17
Swing Weight, Kg/cm2325
Swing Weight, Ounces11.46
Swing Weight Calculated349.6
Power, RDC53
Control, RDC49
Manueverability, RDC70
Power, Calculated 2136.6
Head Points5.98
Head Weight, %47.2
Center of Percussion21.1
Dwell Time, ms9.00
Efective Stiffness - lbs27.5
K, Lb/In160.26
Recoil Weight160.29
Twist Weight260.14
End Weight 135.5
Tip Weight 197.2
9 O'Clock98.4
3 O'Clock100.2
Butt Cap133.2

 

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.

We will continue to evaluate strings with pigmentation to determine if any color does exhibit an affect on the properties.

Dealing with Options, and What are the Options?

The little video you see above is just a reminder that we do not promote polyester based string for underage players!  So, what is underage?  Oh, under 100 would be a good number, I think!

OK, smart alec what are the options?

  • No Polyester

PEEK/Zyex

Well, there are many, however, if the option is only relative to “no polyester” the best option is PEEK material.  This material is usually referred to by the brand name Zyex which is the fiber division of Victrex of England and known by the Ashaway name as well.  This material is normally found as a monofilament construction as is most polyester materials.

PEEK/Zyex offers exceptional durability and energy!

Multifilament

  • Premium Playability

Natural gut still is the number one playing string available.  We use Babolat and Luxilon natural gut but there are other options like Pacific, Klip, and others.

  • Excellent Playability

Multifilament construction can act as a spring and return both performance, power, and comfort.  Typically the more individual fibers the better.  These fibers are usually bonded with a soft adhesive and show signs of “fraying” during use.

Strings in this category include Tecnifibre, Ashaway, Babolat, Head, Yonex, and Gosen and others.  Expect to pay $42.00 + for these strings installed.

  • Playability

These multifilament strings are typically constructed using fewer larger diameter fibers to enhance durability.  The same “fraying” occurs with this grade of string as well however the larger diameter will last a bit longer usually.

Strings in the category include Tecnifibre, Babolat, Head, Yonex, IsoSpeed, Gamma, and others.  Expect to pay between $35.00 and $40.00 for these strings installed.

Synthetic Gut

  • Value

There are probably 10000 strings that fall under this umbrella!  9999 of these strings will be a nylon core with one or two overwraps bonded to the outer surface.  This material and construction has been around for many, many years and has offered great service to millions of tennis players…and is still in major use today!

Strings in this category include at least one, and probably many more, set from every major brand!  If you are really cost-conscious do not overlook this material. Expect to pay $27.00 to $35.00 for these strings installed.

And lastly,  what is our gripe with polyester?  Click on the link below to find out!

Click here to go to a comprehensive post that will explain our position.

As always, our position is “there are no bad strings just bad applications!”