Re: Stiffness versus Time Some of the articles that I read in raquettech.com seems to suggest that the reason for the decrease in stiffness is dued to microcracks forming within the racquet due to stringing and restringing, etc. It would be interesting to compare a new racquet to one (same model) that was manufactured a while ago but never used. This is still not completely accurate too as materials used could be different (i.e. not from the same batch).
I'll check with eggroll. I'm sure he will get the first few in to show to retailers. I haven't talk to him for a while.
Re: Re: Stiffness versus Time Unlike the tennis racket, major flexing of badminton racket occurs along the shaft. Repetitive restringing does weaken the frame but i dont see it would affect badminton racket stiffness degradation. The cause of the weakened shaft is the same though, microfracture of carbon fibers proportional to the maxiumum flexing that the shaft subject to over time.
Hi Cooler, Haven't been here in a while and was going to e mail you directly but thought for the benfit of the BF'ers I would post here. I have all the new raquets in( At 800, 300, cab 30 etc.) and will get the new frames to you for your measurement and demo use as soon as I can. I have two of everything coming including the new shoes. Delivery will be tommorrow. Call me on my cell so we can get together. I will need to get the discontinued models from you to sell. Thanks for your help this season. Keep the faith brother!
By request (winex west can), this post form part five of the 2003 yonex racket measurements. He wanted to know how new racket stiffness varies among the same model. Although i admit i only have 2 samples of each model to examine, the results are consistent and inline of what they should be. These data are not made up or measure just now. I had collected these data since day 1 when all the rackets were measured, eliminating the possibility of change of ambience condition, equipment fluctuation and of course gravitational constant This and previous stiffness results tend to say yonex rackets have stable performance parameters between different weight class, grip size, and within product model. (I'm not saying other brands don't). It's just that from only 2 samples of each model, mp99, mp33, and cab23, the stiffness trends fall within range of what it is expected. Deflection measurements are within +/- 0.5 mm (eggroll's mp33 can be considered brand new as i doubt people want to demo a mp33 when eggroll have mp100/99/88/77, AT500/700 in his bag)
2004 rackets I havent got all the rackets yet. This is a brief highlight and should be treated as preliminary. Until i have them all in, i won't be measuring other parameters. Relative Stiffness (preliminary) AT800 OF(4UG4): 7.40% AT800 DF(4UG4): 7.40% AT300 (4UG4) : 3.45% MP66(3UG4) : -6.72%
the "relative stiffness" seems to be low for the MP66, does this mean it is for defensive play and 'bends' more when you smash?
btw, is it good for me to get a flexible raquet since im not that strong/built and would it help me in my smashes since it "bends" more or should i stick with stiff raquets?
mp-30 does anybody know how the new mp-30 compares to the discontinued mp-33? is it the same? just wondering because the design is different.
A general answer, yes. Badminton isnt all about smashing. One shouldn't look for a racket only good for smashing. Other strokes are equally or more important than a smash. A stiff racket actually reduce smashing speed for beginners or weaker swinging players
cooler, if it's not too troublesome, could you please combine all the data (and results) into one? It's kind of a pain reading them over pages and in segments
each test parameter should rank on its own table. if i combine them all in a table set, you'll be reading in jumbles.
What I meant is to combine the similar ones.... Like, put all similar tests (with the same base) together.....head heaviness tests together, stiffness tests together.....etc
