Another racket matching question!

MattC76

New User
Hi all - sorry for another racket matching question. I currently play with the rf97 (the black and white one) strung with alu power rough in the mains and Prince premier touch in the crosses at about 58-60lbs and Wilson overgrip. I’m an aggressive all-courter and play at a reasonably decent level. I have 2 frames strung the same - one of those I MUCH prefer than the other as I get more control and can play less inhibited than the other frame. Anyway it hadn’t occurred to me before to try matching them so I weighed them and crudely measured their balance points. The racket I LIKE weighs 366g, and balances at a certain point, and the racket I DON’T LIKE weighs only 360g and balances at a point that makes it slightly less head-light. Anyway I have found by sticking a 5 pence coin with a bit of blu-tac under the buttcap I can get them to weigh, and balance identically. My question is: should I now expect them to play the same or is it not as simple as that? I have no idea what the swingweights are but they are otherwise identical frames. Thanks!
 

tim-ay

Hall of Fame
Hi all - sorry for another racket matching question. I currently play with the rf97 (the black and white one) strung with alu power rough in the mains and Prince premier touch in the crosses at about 58-60lbs and Wilson overgrip. I’m an aggressive all-courter and play at a reasonably decent level. I have 2 frames strung the same - one of those I MUCH prefer than the other as I get more control and can play less inhibited than the other frame. Anyway it hadn’t occurred to me before to try matching them so I weighed them and crudely measured their balance points. The racket I LIKE weighs 366g, and balances at a certain point, and the racket I DON’T LIKE weighs only 360g and balances at a point that makes it slightly less head-light. Anyway I have found by sticking a 5 pence coin with a bit of blu-tac under the buttcap I can get them to weigh, and balance identically. My question is: should I now expect them to play the same or is it not as simple as that? I have no idea what the swingweights are but they are otherwise identical frames. Thanks!
You definitely need to check the swing weight. Hopefully you have a local shop that can measure swing weight for you.
 

Irvin

Talk Tennis Guru
should I now expect them to play the same or is it not as simple as that? I have no idea what the swingweights are but they are otherwise identical frames. Thanks!
You can expect them to play similar, but there is more to matching than just weight and balance. Granted weight and balance is more what you feel when you pick up a racket and it accounts for about 50% of the SW. But when you hit a ball both racket stiffness and inertia (recoil weight) come into play which could make a big difference.

EDIT: SW = RW + mr^2 mr being the rackets’ weight and balance - 10 cm
 

MattC76

New User
Thanks both for your replies. If I add the 6g into the butt cap it perfectly matches the weight and balance of the “good” racket. So the swing weight is largely academic because there’s nothing I can do about it anyway?
 

Irvin

Talk Tennis Guru
Thanks both for your replies. If I add the 6g into the butt cap it perfectly matches the weight and balance of the “good” racket. So the swing weight is largely academic because there’s nothing I can do about it anyway?
Not quite true. Adding 6 g to the butt of the racket adds 0.6 points to the SW and lowers the balance by about 0.5 cm. If your measurements were more accurate you could do more but for the time being I would just play with them and see how you like them.
 

Return_Ace

Hall of Fame
Thanks both for your replies. If I add the 6g into the butt cap it perfectly matches the weight and balance of the “good” racket. So the swing weight is largely academic because there’s nothing I can do about it anyway?
If the SW of the racket you like is higher than the one you don't like, you might be able to shift around the added weight to match SW, balance and static.

If the SW of the one you like is lower than the other, you're pretty much SOL.
 

MattC76

New User
Yep I think what I’ll do is just match the weight and balance of the two and see how they play. Actually I’ve just discovered how to measure the swing weight at home so I might give that a try and report back. Cheers
 

MattC76

New User
So in proper nerdy fashion I’ve added precisely 6g with a 5p coin and some blu-tac in the butt cap. Both rackets now weigh precisely 366g. Balance point of good racket is now 12 3/8 in (9 points HL) and modified racket is 12 2/8 in (10 points HL). I’ve also crudely compared swing weights via the TW method (hanging from pencils and timing 10 swings) and they both do 10 swings in 13.85 secs (+/- 0.05 secs) so apart from that extra point head light I’m sure I won’t notice any difference so I’m interested to see how they play!
 
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