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”.
| Manufacturer | Yonex |
|---|---|
| Racquet Model | Yonex VCore Pro 97 2019 |
| Reference Tension | 55 lbs - 24.9 kg |
| String | Pro Evaluation String 1.20mm |
| Machine Used | True Tension Professional |
| ASPS, RDC | 49 |
| ASPS, FlexFour | 65 |
| Racquet Flex, RDC | 61 - After stringing |
| Racquet Flex, FlexFour | 46 |
| Racquet - In Plane Stiffness | 368.1 lbs/Inch |
| Weight, Grams | 324 |
| Weight, Ounces | 11.43 |
| Balance, mm | 323 |
| Balance, Inch | 12.72 |
| Length, Cm | 68.5 |
| Length, Inch | 26.968 |
| Head Width | 9.55 |
| Head Length | 12.54 |
| Head Area, cm2 | 607 |
| Head Area, Sq. Inch | 97 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio Cross/Mains | .641 |
| Main String Grid | 7.00 |
| Cross String Grid | 9.75 |
| Density (% of head filled with string) | .766 |
| Average Cross String Space | .542 |
| Average Main String Space | .438 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .804 |
| Polar Moment | 329 |
| Torsional Stability | 14 |
| Swing Weight, Kg/cm2 | 315 |
| Swing Weight, Ounces | 11.11 |
| Swing Weight Calculated | 338 |
| Power, RDC | 48 |
| Control, RDC | 50 |
| Manueverability, RDC | 77 |
| Power, Calculated | 1807.7 |
| Head Points | 6.14 (negative = head heavy) |
| Head Weight, % | 47.2% |
| Center of Percussion | 21.1 |
| Dwell Time, ms | 9.09 |
| Efective Stiffness - lbs | 27.2 |
| K, Lb/In | 157.05 |
| Recoil Weight | 156.18 |
| Twist Weight | 221.85 |
| End Weight | 133.7 |
| Tip Weight | 190.6 |
| 9 O'Clock | 97.6 |
| 3 O'Clock | 95.9 |
| Butt Cap | 131.1 |
Posted on October 29, 2019, in Demo, Inspiration, Juniors, Patterns, PEEK, Racquet Demo, Racquets - New, String Patterns, Technology, True Tension, Yonex and tagged VCore Pro. Bookmark the permalink. 2 Comments.
Racquet Quest, LLC
John,
I very much appreciate the level of detail this site continues to provide.However one aspect of this information which is a little confusing is translating the values into relatable concepts.
Firstly, I don’t have a good notion of what the scale, or parameters are for the data. Take “twist weight” for example. The value here is 221.85. is this based on a scale of 0-300, or 0-1,000?
Additionally, I’m not sure what to do with this value, is a higher value better, or worse?
I know that my wife’s diesel Golf, which gets 55 mpg has excellent fuel efficiency only because I’m familiar enough with the range in which that data exists.
Thanks again for all the information, but I’m wondering if you can provide some context for the information
Steve, that is a very good observation and one I tried to address some time ago. I will find the older post or post a new one soon!