Category Archives: Power

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!

Racquet ModelHead Prestige Pro 2023 18x20 Retail
Reference Tension52
MonoGut ZX Pro (PEEK)
Machine UsedTrue Tension Professional
String Bed Stiffness - RDC54
String Bed Stiffness -FlexFour56.4
String Bed Stiffness - SBS44
String Bed Stiffness - ERT35 Kg/Cm
Racquet Flex, RDC58
Racquet Flex, FlexFour44
Racquet - In Plane Stiffness342.9
Weight, Grams340
Weight, Ounces11.99
Balance, mm3234
Balance, Inch12.72
Length, Cm68.6
Length, Inch27.03
Head Width9.476
Head Length13.052
Head Area, cm2626.7
Head Area, Sq. Inch97.1
Beam Height @ Grip, mm20.8
Beam Height @ Mid, mm20.0
Beam Height @ Tip20.0
Beam Width @ Grip, mm10.7
Beam Width @ Throat, mm10.8
Beam Width @ Mid, mm11.5
Beam Width @ Tip, mm12.2
Number of Main Strings18
Number of Cross Strings20
Main String Grid7.56
Cross String Grid10.25
Density (% of head filled with string)71.4%
Average Cross String Space.513
Average Main String Space,453
Dynamic Tension, Kp, ERT35
Dynamic Tension, Lbs/in195.76
First Moment, Nm.844
Polar Moment335
Torsional Stability16
Swing Weight, Kg/cm2319
Swing Weight, Ounces11.25
Swing Weight Calculated354.7
Power, RDC44
Control, RDC57
Manueverability, RDC74
Power, Calculated 1811.3
Head Points6.3
Head Weight, %47.1%
Center of Percussion20.5
Dwell Time, ms6.125
Efective Stiffness - lbs28.0
K, Lb/In173.08
Recoil Weight152.3
Twist Weight229.34
End Weight 139.8
Tip Weight 198.9
9 O'Clock100
3 O'Clock101.7
Butt Cap137.4
COF, Main.383
COF, Cross.204



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!

You CAN tie knots!

Based on this information we would suggest this string for a player looking for extraordinary comfort, power, and relatively short life!

If, based on what you see here, you want to try it let us know!



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

You can “search” by a brand to quickly find any string you are interested in.