Category Archives: Racquet Demo

Yonex VCore Pro 97 – 330

It should be no surprise that this model is the heaviest of the VCore Pro Series!  However, I can’t stress enough the need to demo this racquet and feel what the weight will do for your game!

Of course not everyone will want a racquet of this weight but just trying it will give you some idea of what weight can do for you.  Maybe not 330 (unstrung) but a little added weight nonetheless.

That makes the 310 (unstrung) version of this racquet a “standout”, and you can see the review here.

About this racquet, Yonex says “for intermediate to advanced players looking to play aggressively with control and feel”.

To achieve this combination Yonex has incorporated a “lock booster” grommet system that promotes string contact for effecient energy transfer”.

Namd™ graphite fibers are incorporated into the throat area allowing the racquet to flex even under the heaviest of hits!

To top it off Yonex has added a vibration damping mesh in the grip pallet area to filter out unwanted vibrations.

All said, this thin beam (20.0mm) racquet with a 16×19 string pattern is a players dream!  So, don’t dream about it…demo it and decide for yourself!


Racquet ModelYonex VCore Pro 97
Reference Tension55 lbs - 24.9 kg
Pro Evaluation String 1.20mm
Machine UsedTrue Tension Professional
ASPS, FlexFour66
Racquet Flex, RDC62 - After stringing
Racquet Flex, FlexFour48
Racquet - In Plane Stiffness373.2 lbs/Inch
Weight, Grams344
Weight, Ounces12.13

Balance, mm321
Balance, Inch12.64
Length, Cm68.6
Length, Inch27.008
Head Width9.56
Head Length12.62
Head Area, cm2611.3
Head Area, Sq. Inch97
Number of Main Strings16
Number of Cross Strings19
Ratio Cross/Mains.638
Main String Grid7.00
Cross String Grid9.62
Density (% of head filled with string).709
Average Cross String Space.505
Average Main String Space.438
Dynamic Tension, Kp, ERT34
Dynamic Tension, Lbs/in190.16
First Moment, Nm.847
Polar Moment342
Torsional Stability15
Swing Weight, Kg/cm2327
Swing Weight, Ounces11.53
Swing Weight Calculated354
Power, RDC49
Control, RDC51
Manueverability, RDC69
Power, Calculated 1940.1
Head Points6.93 (negative = head heavy)
Head Weight, %46.8%
Center of Percussion20.9
Dwell Time, ms8.74
Efective Stiffness - lbs28.6
K, Lb/In169.87
Recoil Weight161.48
Twist Weight235.86
End Weight 144.4
Tip Weight 201.5
9 O'Clock102.6
3 O'Clock104.8
Butt Cap138.0



Yonex VCore Pro 97 – 310

Yonex continues to introduce upgrades to the most popular racquets they have produced recently and these new VCore Pro series is a great example of positive changes.

This series continues to be made in Japan and it is obvious in the consistency of their racquets.  The deep Forrest Green and Gold graphics creates a “strong” looking racquet which will appeal to players.

This model is the 310 gram (10.9 oz) version (unstrung)which gains about a ½ ounce when strung and presents a very usable 315 kg/cm² swing weight.  Right out of the box this will suit a lot of players.  Of course a little customization can be done if required.

When looking at racquets it is clear that this Yonex Series all look alike!  A closer look at the head will give you the weight and head size.

The 16×19 string pattern in the Isometric Head Shape creates a large “comfort zone” area and long main strings near the edge of the racquet face which contributes to that “comfort”.


Racquet ModelYonex VCore Pro 97 2019
Reference Tension55 lbs - 24.9 kg
Pro Evaluation String 1.20mm
Machine UsedTrue Tension Professional
ASPS, FlexFour65
Racquet Flex, RDC61 - After stringing
Racquet Flex, FlexFour46
Racquet - In Plane Stiffness368.1 lbs/Inch
Weight, Grams324
Weight, Ounces11.43

Balance, mm323
Balance, Inch12.72
Length, Cm68.5
Length, Inch26.968
Head Width9.55
Head Length12.54
Head Area, cm2607
Head Area, Sq. Inch97
Number of Main Strings16
Number of Cross Strings19
Ratio Cross/Mains.641
Main String Grid7.00
Cross String Grid9.75
Density (% of head filled with string).766
Average Cross String Space.542
Average Main String Space.438
Dynamic Tension, Kp, ERT33
Dynamic Tension, Lbs/in184.57
First Moment, Nm.804
Polar Moment329
Torsional Stability14
Swing Weight, Kg/cm2315
Swing Weight, Ounces11.11
Swing Weight Calculated338
Power, RDC48
Control, RDC50
Manueverability, RDC77
Power, Calculated 1807.7
Head Points6.14 (negative = head heavy)
Head Weight, %47.2%
Center of Percussion21.1
Dwell Time, ms9.09
Efective Stiffness - lbs27.2
K, Lb/In157.05
Recoil Weight156.18
Twist Weight221.85
End Weight 133.7
Tip Weight 190.6
9 O'Clock97.6
3 O'Clock95.9
Butt Cap131.1


Tecnifibre T-Flash 285

As I was working on this racquet I am thinking about the category in which this will be placed by me, and others probably, and I need to put it in the “game improvement” category!

Typically “game improvement” racquets are very large, ultra light, head heavy, and stiff!  The T-Flash falls into this category because it is stiff!  None of the other characteristics apply!

This racquet has a stiffness of RDC 70!  This compares to the Wilson Ultra, and the Babolat Pure Drive, except it is not as heavy as either of those racquets.

To me the weight is an issue that can be remedied, and the very open string pattern mitigates the stiffness and keeps the effective stiffness below 30.

If you are considering a “power” oriented racquet this one should be on the list!

Adding Ashaway MonoGut ZX string to the mix assures the player of comfortable hitting!

Take a look at the specifications… then hit with it!

Racquet ModelTecnifibre T-Flash 285
Reference Tension55 lbs - 24.9 kg
Ashaway MonoGut ZX
Machine UsedTrue Tension Professional
ASPS, FlexFour68
Racquet Flex, RDC70 - After stringing
Racquet Flex, FlexFour56
Racquet - In Plane Stiffness413.8 lbs/Inch
Weight, Grams315
Weight, Ounces11.11

Balance, mm336
Balance, Inch13.23
Length, Cm68.5
Length, Inch26.968
Head Width9.57
Head Length12.92
Head Area, cm2626.4
Head Area, Sq. Inch97.1
Number of Main Strings16
Number of Cross Strings19
Ratio Cross/Mains.624
Main String Grid7.75
Cross String Grid10.31
Density (% of head filled with string).823
Average Cross String Space.543
Average Main String Space.484
Dynamic Tension, Kp, ERT35
Dynamic Tension, Lbs/in195.7
First Moment, Nm.822
Polar Moment330
Torsional Stability14
Swing Weight, Kg/cm2316
Swing Weight, Ounces11.15
Swing Weight Calculated355
Power, RDC56
Control, RDC45
Manueverability, RDC76
Power, Calculated 2147.6
Head Points2.05 (negative = head heavy)
Head Weight, %49.1%
Center of Percussion20.7
Dwell Time, ms8.91
Efective Stiffness - lbs29.5
K, Lb/In163.4
Recoil Weight142.9
Twist Weight216.4
End Weight 113.0
Tip Weight 197.1
9 O'Clock95.7
3 O'Clock99.1
Butt Cap115.2

Tecnifibre TF 40 305

As you know Racquet Quest is always interested in racquet models from any brand and while Tecnifibre is not a new brand it is, in my opinion, just beginning to gain traction in this market.

Tecnifibre has always been associated with some of the best multi-filament strings available.

The racquet we are reviewing today is the Tecnifibre TF 40, 305 gram version.  I would place this racquet in the “player” category, if you believe in such categories, and the 21.7mm beam confirms where most “players” find themselves. The 18×20 string pattern also contributes to the categorical placement.

There is a 305 gram version of the TF 40 and a 315 gram version both having the 18×20 string pattern.  I believe there needs to be a 16×19 string pattern to complete the TF 40 series.

The TF 40 series is a no-frill approach to racquets.  The red, white, blue, and black graphics look good as does the “knurled” outer surface of the racquet head.

Take a look at the “play ready”, string, overgrip, vibration damper, specifications below to see how it stacks up, then come by and try it!

Racquet ModelTecnifibre TF 40 305
Reference Tension53 lbs - 24.9 kg
Tecnifibre HD MX 16
Machine UsedTrue Tension Professional
ASPS, FlexFour69.5
Racquet Flex, RDC60 - After stringing
Racquet Flex, FlexFour43
Racquet - In Plane Stiffness376.3 lbs/Inch
Weight, Grams329
Weight, Ounces11.61

Balance, mm332
Balance, Inch13.07
Length, Cm68.6
Length, Inch27.008
Head Width9.57
Head Length12.86
Head Area, cm2623.3
Head Area, Sq. Inch96.6
Number of Main Strings18
Number of Cross Strings20
Ratio Cross/Mains.670
Main String Grid7.625
Cross String Grid10.125
Density (% of head filled with string).786
Average Cross String Space.506
Average Main String Space.417
Dynamic Tension, Kp, ERT39
Dynamic Tension, Lbs/in218.3
First Moment, Nm.846
Polar Moment337
Torsional Stability16
Swing Weight, Kg/cm2321
Swing Weight, Ounces11.32
Swing Weight Calculated362.6
Power, RDC41
Control, RDC61
Manueverability, RDC73
Power, Calculated 1879.3
Head Points3.46 (negative = head heavy)
Head Weight, %48.4%
Center of Percussion20.5
Dwell Time, ms8.21
Efective Stiffness - lbs30.0
K, Lb/In192.3
Recoil Weight146.3
Twist Weight226.0
End Weight 127.6
Tip Weight 202.0
9 O'Clock98.7
3 O'Clock100.7
Butt Cap127.8

Pssst…want to try something?

If you read our recent post about “How to Demo a Racquet,” you may be incentivized to do it!

So while you are at it try one of our performance racquets setup with MonoGut ZX or ZX Pro (thinner) to get the maximum performance from the racquet.

Ashaway MonoGut ZX and ZX Pro have been one of our most popular strings for well over five (5) years!

Top players have been using it, but now the word is spreading that is not just for “the good player” but for everyone! We are very sensitive to injuries and injury prevention, so that is why we recommend MonoGut ZX to almost all players. The durability and feel of this string are unique, and, MonoGut ZX and ZX Pro is a monofilament but is PEEK and no polyester.

As with any string, some will not want to change, but if you are looking for a new racquet, why not demo a racquet setup with MonoGut ZX or ZX Pro?

MonoGut ZX & ZX Pro

Ashaway MonoGut ZX and ZX Pro come in Black and Natural and 16 (1.27mm) and 17 (1.24mm) gauge.

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