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Old 11-12-2012, 06:29 PM   #243
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Originally Posted by Alain View Post
I have 5 Volkl PB10 mid . My prefer MGR/I is 20,90 and the best swingweight with this racquet seems to be for me 325: better manoeuvrability with lesser weight possible .
Two of them SW are 331 with higher balance (+0.2) and weight( +2g) than the others and MGR/I is 20,70 .
I used paper glass to sand the bumper ( from 3 to 9 o'clock) and decrease it easily 2g .
Now the result is the same for the 5 racquets: 339g strung , Balance 31,7 , swingweight 325 .

Sanding the bumper, MGR/I has increased from 20,70 to 20,82 .
Now just adding 5 g surgrip, the MGR/I is 20,90, SW 325, 344g, Bal 31,4.

Question: is it acceptable to increase MGR/I sanding the bumper ( 2 g is very easy) when you accept or need to decrease mass, balance, and SW or do you always prefer to increase weight at 7" to increase MGR/I ?
Or are you always wrong sanding the bumper (increase flutter at the top of the racquet ?) .
Because for some racquets ( Becker London for example), if you don't sand the bumper you need to add a very high mass at 7" to increase MGR/I to 21 ( 15 to 20g) .
For a Babolat APD you will probably need 20g at 7" to obtain MGR/I 20,90 .
For a Volkl PB 10: 8 g at 7" and a 5g surgrip will increase the weight at
356g and MGR/I 20,90 .If you decrease the bumper for 2,5g you will obtain the same MGR/I with only 345,5g which is more acceptable.

Thank you

If you prefer a lighter racquet, there is nothing inherently wrong with shaving mass off the bumper to reach your optimum MgR/I value.

I personally prefer the extra stability of a higher swingweight, but others may value maneuverability more than I do.
BLX Blade 98. 26.75". 13.195 oz., 12.55", 357 SW. 16x20 (outer mains skipped)
Pre-Stretched Ashaway Kevlar 16g/ZX Monogut Natural 16g, 90/40 lbs
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