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Testing the stiffness of a racquet
October 19, 2011
6:46 pm
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Yves
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I've got a question: If you bend a racquet to measure it's stiffness like shown in the picture below, does it damage the racquet (the carbon fibres) or make it more flexible? Because I've done that a lot and now I'm kinda concerned about my Voltric :s

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October 19, 2011
10:45 pm
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Matthew Seeley
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The racket does this naturally when you swing it anyway (it bends out of shape as shown as it swings through the air). You are not, in my opinion, damaging it anymore than playing with it.

October 20, 2011
11:14 am
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Peter Warman
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It's funny you should as this as only last night we (me and my mate) were trying this out!

 

We found a racket in the bin that had a broken head. We were bending the shaft as much as we could to try and find it's snapping point and it just kept bending! And then  when we released the racket it went back to it's normal shape. The only way we could get the shalf to break was to rest it against something and stand on the middle, but even then it was really hard to break.

 

Obviously if you have a cheap racket (or a fake/clone) then it might have snapped sooner, but I think generally you would be supprised how much you could bend the shaft before doing any damage.

 

I could have sworn though, that one of my rackets was never quite the same again after I hit the floor to get to a shot once. But that could have been in my head, although I never had the same problems with my identical racket.

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October 21, 2011
12:00 am
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Paul Stewart
Cheshire, UK
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I think you guys have pretty well covreed the answers here. It’s a good question and brings into consideration what we really mean by the different flexes in a shaft and the different balance points on a racquet.
 
For me I don’t bother measuring balance point. I play with the racquet and see what it’s got to give me. I don’t need to get  almost nerdy on the subject to know whether i like a racquet or not.
 
For most racquets they’ve already been tested thousands of times in a lab before they are mass produced. So, the manufacturers know that the flex and return points in a racquet are constant. And yes Peter, it does take a huge amount to break a shaft, although I once knew a player who used to break  shafts hitting backhand clears!
 
Paul

October 21, 2011
2:09 pm
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Peter Warman
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I have never really used this to test the stiffness of a racket as such, I think what Paul says is very true, just play with it.

 

The only reason we tried it on this broken racket was a) we were bored, b) wanted to see how far you could push the shaft and c) we were bored! Laugh

 

Out of interest Paul, what do you think was the cause of the player that used to break the shafts by doing back hand clears? Poor racket? Poor technique? Or just too powerful?

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October 21, 2011
10:19 pm
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Paul Stewart
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The player I’m thinking of used to break the old Yonex Cab8 racquets. He was so strong and had such tremendous whip.
 
I think you had to watch him play with a crash helmet on to be safe.
 
Paul

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