The Long & The Short of it!
One of our most requested racquet modifications is for extending the racquet or if it is a full custom racquet cutting off an uncut racquet!
This post is going to present the Wilson Blade 98 v9 in the standard length and the extended length. This is not a direct comparison because one is 16×19 and one is 18×20. The focus here is on the effect of the extension on dynamic properties.
A knowledgeable racquet technician, and current extended racquet user, will know that an extended retail racquet will not necessarily be the same as a “manufactured” racquet. This is likely due to the different weight placement and amount used by the manufacturer.
Briefly, then, an extended racquet will likely be a more powerful racquet… but let’s take a look at two (2) of the properties that contribute to power:
Now look at the “Power, Calculated” data to see how the other two (2) properties contribute.
First the retail extended racquet
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Blade 98 v9 18x20 Extended |
| Reference Tension | 46 |
| String | Volkl V-Star 18 |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 48 |
| String Bed Stiffness -FlexFour | 59.5 |
| String Bed Stiffness - SBS | 45.4 |
| String Bed Stiffness - ERT | 33 Kg/Cm |
| Racquet Flex, RDC | 62 |
| Racquet Flex, FlexFour | 45.1 |
| Racquet - In Plane Stiffness | 397.4 |
| Weight, Grams | 353 |
| Weight, Ounces | 12.45 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 69.9 |
| Length, Inch | 27.520 |
| Head Width | 9.61 |
| Head Length | 12.85 |
| Head Area, cm2 | 625.5 |
| Head Area, Sq. Inch | 96.9 |
| Beam Height @ Grip, mm | 23.0 |
| Beam Height @ Mid, mm | 21.0 |
| Beam Height @ Tip | 21.0 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.0 |
| Beam Width @ Mid, mm | 12.0 |
| Beam Width @ Tip, mm | 13.0 |
| Number of Main Strings | 18 |
| Number of Cross Strings | 20 |
| Ratio | .673 |
| Main String Grid Inch/mm | 7.75/196.8 |
| Cross String Grid Inch/mm | 10.00/254.4 |
| Density (% of head filled with string) | .799% |
| Average Cross String Space | .500 |
| Average Main String Space | .431 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .890 |
| Polar Moment | 376 |
| Torsional Stability | 18 |
| Swing Weight, Kg/cm2 | 358 |
| Swing Weight, Ounces | 12.63 |
| Swing Weight Calculated | 377.5 |
| Power, RDC | 59 |
| Control, RDC | 38 |
| Manueverability, RDC | 48 |
| Power, Calculated | 2259.4 |
| Head Points | 7.09 |
| Head Weight, % | 46.8% |
| Center of Percussion | 21.5 |
| Dwell Time, ms | 6.76ms |
| Efective Stiffness - lbs | 27.1 |
| K, Lb/In | 153.85 |
| Recoil Weight | 178.66 |
| Twist Weight | 244.25 |
| End Weight | 141.2 |
| Tip Weight | 210.4 |
| 9 O'Clock | 99.7 |
| 3 O'Clock | 97.2 |
| Butt Cap | 155.0 |
| COF, Main | .332 |
| COF, Cross | .296 |
Now the retail standard racquet
| Manufacturer | Wilson |
|---|---|
| Racquet Model | Wilson Blade 98 v9 16x19 Standard |
| Reference Tension | 56 |
| String | PEEK 7710 |
| Machine Used | True Tension Pro |
| String Bed Stiffness - RDC | 50 |
| String Bed Stiffness -FlexFour | 58.2 |
| String Bed Stiffness - SBS | 39.5 |
| String Bed Stiffness - ERT | 33 Kg/Cm |
| Racquet Flex, RDC | 62 |
| Racquet Flex, FlexFour | 39.5 |
| Racquet - In Plane Stiffness | 425.5 |
| Weight, Grams | 328 |
| Weight, Ounces | 11.57 |
| Balance, mm | 327 |
| Balance, Inch | 12.87 |
| Length, Cm | 68.6 |
| Length, Inch | 27.00 |
| Head Width | 9.62 |
| Head Length | 12.87 |
| Head Area, cm2 | 627.0 |
| Head Area, Sq. Inch | 97.2 |
| Beam Height @ Grip, mm | 23.0 |
| Beam Height @ Mid, mm | 21.0 |
| Beam Height @ Tip | 21.0 |
| Beam Width @ Grip, mm | 10.5 |
| Beam Width @ Throat, mm | 10.0 |
| Beam Width @ Mid, mm | 10.3 |
| Beam Width @ Tip, mm | 12 |
| Number of Main Strings | 16 |
| Number of Cross Strings | 19 |
| Ratio | .629 |
| Main String Grid Inch/mm | 7.25/184.1 |
| Cross String Grid Inch/mm | 9.44/239.7 |
| Density (% of head filled with string) | .704 |
| Average Cross String Space | .497 |
| Average Main String Space | .453 |
| Dynamic Tension, Kp, ERT | 33 |
| Dynamic Tension, Lbs/in | 184.57 |
| First Moment, Nm | .827 |
| Polar Moment | 334 |
| Torsional Stability | 15 |
| Swing Weight, Kg/cm2 | 318 |
| Swing Weight, Ounces | 11.25 |
| Swing Weight Calculated | 350.7 |
| Power, RDC | 49 |
| Control, RDC | 53 |
| Manueverability, RDC | 74 |
| Power, Calculated | 1941.4 |
| Head Points | 5.05 |
| Head Weight, % | 47.7% |
| Center of Percussion | 20.8 |
| Dwell Time, ms | 6.62ms |
| Efective Stiffness - lbs | 27.2 |
| K, Lb/In | 160.25 |
| Recoil Weight | 152.36 |
| Twist Weight | 227.34 |
| End Weight | 131.9 |
| Tip Weight | 196.9 |
| 9 O'Clock | 92.4 |
| 3 O'Clock | 92.1 |
| Butt Cap | 144.0 |
| COF, Main | .388 |
| COF, Cross | .354 |
Posted on February 27, 2024 Tue, in Custom Racquets, Customization!, Full Custom Racquets, Racquets, Racquets - New. Bookmark the permalink. Leave a comment.
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