Results 52 to 68 of 72
04-05-2008, 08:49 PM #52
Yonex under tension
I just have just strung my W7 with BG-80 at 26/29 (crank) and taken some readings: mains are 0.69 at the centre, graduating to 0.72 at the sides, while crosses are between 0.67 and 0.68.
Since it is ostensibly 0.68mm, it would seem that BG-80, at least, assumes a crank tension in the high twenties (or an electronic in the mid twenties). Makes sense, as their rackets are warrantied up to somewhere in this band.
01-26-2009, 10:53 AM #53
01-26-2009, 12:53 PM #54
01-29-2009, 07:53 AM #55
just a quick note
I dug out an old imperial micrometer and tested some BG65 I was stringing
(calibration: zero looked dead on)
untensioned BG65 (black) at various places
28.7, 29.3, 29.2 thousandths of an inch
~ 0.729, 0.744, 0.742 mm
BG65 (black) @ 16lb
27.5, 28 thousandths of an inch
~ 0.699, 0.711 mm
not a particularly thorough test, but some backup for the claim that Yonex's thicknesses are measured under tension
01-29-2009, 12:00 PM #56
01-29-2009, 12:04 PM #57
01-29-2009, 12:05 PM #58
01-29-2009, 12:11 PM #59
01-29-2009, 03:24 PM #60
as long as it's consistent it's fine. Best would be if all brands were on the same page, but you can't have it all
Give a man 2 rackets, one says frameweight 70, other frameweight 75.
Give the same man, the same two rackets, but now call them 80 grams and 85 grams (respectively) 'unstrung weight'.
...Does it matter?
Now, the confusion comes when the man gets a 70 Frameweight and a 90grams unstrung weight, or something like that.
01-29-2009, 03:48 PM #61
20 0.812 mm
21 0.723 mm
22 0.644 mm
Last edited by cooler; 01-29-2009 at 03:53 PM.
01-29-2009, 04:06 PM #62
01-29-2009, 05:09 PM #63
Guys, both of you are right on the subject. Yes, YY should be embarrASSed for not giving the condition of measuring of string thickness. (yes you hear it from me) And yes, Dr Jerby is right also, YY want to produce consistent product.
Thanks for Mark doing all the work on measuring the string. Ans good pick on the Ashaway line for Neil.
01-29-2009, 05:46 PM #64
0.70mm / 22GA.
but then it also says 10m / 33feet
and we know we'd all complain if there was LESS than 10m / 33feet in the packet.
Maybe they think we'd all complain if it was LESS than 0.70mm thick
The marketing fulff says "This 0.70mm gauge is processed braided fiber which is strong for friction"
but then that's sales BS, and sounds badly translated at that.
03-05-2009, 01:05 PM #65
If thinner string always play better than thicker string regardless of make, material, and whatever technology they put in strings. Then why doesn't every Pro use the thinnest string possible from their sponsors? Or do they?
Unless you're good enough to know the difference under a control test, why concern ourselves with it unless you want to sue Yonex.
What we should really discuss is how the colour of the string can influence your game play/mood. And if they should implement a wear indicator on the string like toothbrushes so we know when it is time to change strings...
02-08-2010, 12:12 AM #66
02-08-2010, 06:04 AM #67
Please remember, Ashaway and Yonex measure string thickness differently. Ashaway measures string untensioned while Yonex measures it tensioned (I do not know the exact number but a good guess is around 20-24lbs.)
02-08-2010, 06:10 AM #68
I might be wrong about this, but I think ashaway changed it's thickness measurement for the zymax strings. Their 'new' 0.70 ZM70 is definately thicker than their 'old' 0.70 MP.
The ZM67 feels about as thin as MP.
And if I can be honest, if their ZM62 is really really 0.62mm, I just can't believe it could last a minute at 30lbs But I never tried it, so I can't know
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