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9:17 am
February 15, 2011
Offline
Luke
Repulsion is how the shuttle springs off the strings and racket head. Think of a plastic spoon. If you bend it slightly you could fling an object with considerable force. That is repulsion. There is no power or force being applied in a forward direction. In this case the force is applied in an opposite direction to create the repulsion.
With a racket you have the forward momentum – power which flexes the shaft and head. As the shuttle reaches the string it is absorbed into the stringbed and then repelled. This happens at around the same time the racket head and shaft regain their original shape – hence repulsion from the string and racket.
Paul
4:08 pm
August 16, 2013
Offline Thank you very much for the reply.
So “power” and “repulsion” are different afterall, but interrelated through speed. CMIIW.
I must admit I’ll need sometime to fully digest everything in this thread combined. Meanwhile, time for me to test more rackets and strings in the quest of finding MY combo.
I hope I’m better prepared to distinguish between them from now on.
Thank you again.
P.S what is “repulsion power”?
9:16 am
February 15, 2011
Offline Luke
I would consider repulsion power to be the measure of speed that is created by repulsion. I've not heard this phrase before and just proves the level of confusion in badminton.
Paul
4:51 pm
August 16, 2013
Offline Paul, I found this phrase in a copy of 2011 Yonex Catalogue, string part.
In their rating system, Yonex’s “R” stands for “repulsion power”.
My personal suspicion on what it actually is is similar to yours, but perhaps you would look further into this?
In any case I recall using 10-R-rated strings, BG66UM and NBG98. Found both to be capable of bouncing the bird away real fast. Was happy playing lotsa attacking clears, drives and defensive lifts.
9:02 pm
February 15, 2011
Offline Luke
Also remember that phrases are created for marketing purposes. Next we'll be getting rating on repulsion power and then we will all be confused!
Paul
9:13 am
August 16, 2013
Offline You are right, Paul. Let’s leave it there.
Btw, since my string had snapped, I asked my stringer to put a little bit of lead on top of the frame (good old Carbonex 8SP) and strung it with NBG99. Now the feel of my racket is completely different. More power yes! But I have to be more careful not to injure myself…
Just saying… 🙂
9:33 am
February 15, 2011
Offline Luke
That depends on how much lead tape was used. That's why I use Victor's Powerizer because it fits so well onto a frame and adds small amount of weight at any time.
There's a lot of players who would benefit by testing the weight of their racket first before continually looking for a new racket. The cost of Powerizer is around £5 so itt's certainly worth a test.
Paul
2:22 pm
August 16, 2013
Offline Thank you Paul for the tip.
Well my racket is relatively heavy in its own right being an old model from the 80’s. Adding weight on top exacerbates it but I think I am improving. For one thing this heavyweight is suitable for your armchair exercises.
I still wish to one day own a proper 3U racket though, perhaps a VT5 first.
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