Category Archives: Good News!

It is Never too Early to Start!

My Great Grand Daughter, Emma, has decided to take up tennis at the age of 18 months and it looks like she knows what do do with the racquet and ball, but the real deal is she knows how to dress!

Emma, Miss Racquet Quest 2019!

Thankfully her mother sent a bunch of really great pictures so you will be seeing more of Emma!

Storm Coming!

Orlando is expecting a storm of another kind!

Click here to find out more…

Racquet v Racquet!

If tennis racquets could play each other without the help, or hindrance, of a human, I wonder how they would do?

When we finish a series of racquets for a client, we have data that detail the properties, so, why not use this process to see how two (2) different racquets compare and, what, if anything, would contribute to one racquet “beating” another. We have this data for each client, so, we could play one client racquet against another! Of course to the player this is subjective but let’s look at a quick comparison and discuss what could make a difference and what that difference may be.

PropertyHead Prestige MidYonex VCore Pro 97DifferenceWhat it Means
Main String
MonoGut ZX
MonoGut ZX
Cross StringMonoGut ZXMonoGut ZX
End Weight146.4147.2-.8 gramsNothing
Tip Weight206.0205.4.6 gramsNothing
Overall Weight352.4352.6-.2 gramsNothing
Swing Weight343.0340.03 Kg/cm2Very Little
Polar Moment358.0358.00.0Nothing
In Plane Stiffness411.0352.958.1 Lbs/InchResistance to "Squeezing"
Static Balance321.8321.1.7mmNothing
Stability1518-3 unitsLess Stable
Position 1 - Butt Cap137.6141.3-3.7 gramsLess weight in the grip
Position 2 - 9 O'Clock108.1105.13 gramsMore weight on the left
Position 3 - 3 O'Clock106.5104.61.9 gramsMore weight on the right
CheckSum352.23511.2 gramsConfirmation
RDC Stiffness5960-1Nothing
FlexFour Stiffness4145-4Less stiff in the shaft
SBS - RDC66588Different testing methods
SBS - FlexFour70.566.04.5Different testing methods
SBS - Lbs/Inch225.9211.514.5 Lbs/InchTighter String Bed
COF= Main.387.392-.005Nothing
COF = Cross.397.342.055More Ball Grip
Peak Load218.0231.0-15.1Softer String Bed @ big hits
Head Weight %47.05%46.94%.11%More weight toward head
Dwell Time5.4 ms4.9 ms.5 msLonger ball contact
Length - Unstrung68.5 cm68.5 cmo.o cmNothing
Head Size - Calculated92.4 Square Inch95.8 Square Inch-3.4 Square inchHigher String Bed Stiffness
Head Width9.2 Inch9.6 Inch-.4 inchMore Twisting

As you can see, there is little difference in these racquets so it could be concluded that they will play the same. However, let’s start at the top and look at the properties that could make a difference.

MonoGut ZX String is quite “soft,” and both racquets were strung at the same reference tension so not much there.

The End, Tip, and Overall Weight are virtually the same as is Swing Weight and Polar Moment.

In Plane Stiffness is the racquets resistance to becoming more narrow when cross strings are tensioned, or wider when main strings are installed. In Plane Stiffness can contribute to a more “firm” or more “flexible” string bed.

Static Balance is the same, but Stability is higher for the Yonex, and I contribute this to the slightly “wider” head. The farther the sides are from the neutral axis, the more stable. However, the Head has a higher 9 and 3 O’Clock weight which should contribute to stability.

Position 1, 2, and 3 are weights taken at three locations on the racquet. Places 2, and three on the Yonex could be increased slightly to increase swing weight.

The checksum is there for me to confirm entries.

RDC and FlexFour stiffnesses indicate that the Yonex should be a little more “powerful” (≈13%) which is confirmed in another piece of data not included here.

SBS RDC and FlexFour are different tests of the string bed. The FlexFour data is used to calculate SBS Lbs/Inch. This data would suggest the Yonex racquet would generate a little more “grunt.”

COF=Main: is the resistance of a ball sliding up the main strings.

COF=Cross: is the resistance of a ball sliding across the cross strings. So, if the ball can catch the string (higher number) the more quickly the ball will begin to rotate. At this moment the coefficient of friction of “string on string” will take over.

String on String” coefficient of friction is recorded in another data base and can be used to choose complimentary strings for any occasion.

Unravellin​g 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…

Does String Color Matter?

Recently a friend asked “would the same string but different color play differently”?

Of course the only way to confirm anything in terms of “playabilty” is to prepare a racquet with both strings, lab test them then hit with them. We will try to do this soon.

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…

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:

Wilson Clash

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 mid February, or stop by and see the racquets and say “hello”!

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…

Racquet ModelHead Graphene 360 Instinct MP
Reference Tension55.0
Head FXP Tour Blue
Machine UsedTrue Tension Professional
ASPS, FlexFour60.0
Racquet Flex, RDC62.0
Racquet Flex, FlexFour46.0
Weight, Grams315.1
Weight, Ounces11.08
Balance, mm326.9
Balance, Inch12.84
Length, Cm68.5
Length, Inch26.968
Head Width9.88
Head Length13.13
Head Area, Sq. Cm656.9
Head Area, Sq. Inch101.8
Number of Main Strings16
Number of Cross Strings19
Ratio Cross/Mains.633
Main String Grid7.25
Cross String Grid9.50
Density (% of head filled with string).676
Average Cross String Space.500
Average Main String Space.453
Dynamic Tension, Kp, ERT35
Dynamic Tension, Lbs/in195.76
First Moment, Nm.789
Polar Moment, Kg/cm2325
Torsional Stability19
Swing Weight, Kg/cm2306
Swing Weight, Ounces10.79
Swing Weight Calculated333.7
Power, RDC46
Control, RDC56
Manueverability, RDC83
Power, Calculated 1938.1
Head Points (negative = head heavy)5.20
Head Weight, %47.6%
Center of Percussion20.9
Dwell Time, ms (no swing speed)8.74ms
Efective Stiffness28.6
K, Lb/In169.87
Recoil Weight147.88
Twist Weight228.69
End Weight, grams (Play Ready)126.7
Top Weight, grams (Play Ready)188.4


Everyone has challenges in life…

playing with bad strings should not be one of them!

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!

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!

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