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Dinkie's Badminton String Thickness Test

Discussion in 'Badminton String' started by DinkAlot, Mar 26, 2008.

  1. cooler

    cooler Regular Member

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    string is different. A small difference of +/-0.05mm can change playability significantly plus that these small changes can be affected by many outside variables like tension, temperature, and age of string. If yonex can't be assure of string diameter because of various reason, they should rate diametesr like in your examples of weight where yonex uses U's which they could use symbol D's. They could also use the more relaxed existing AWG rating system.

    AWG
    20 0.812 mm
    21 0.723 mm
    22 0.644 mm
     
    #61 cooler, Jan 29, 2009
    Last edited: Jan 29, 2009
  2. jerby

    jerby Regular Member

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    but they are sure, and tension/temp/age/etc is nothing they can do about.
    They are consistent in there string, but they use a different 'scale'.
    (It's like ashaway qoutes it's prices in usd, and yonex in euro's. How's that for a comparison?;):p)
     
  3. silentheart

    silentheart Regular Member

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    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.
     
  4. Neil Nicholls

    Neil Nicholls Regular Member

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    back of my packet of BG65 it says
    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 :p

    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.
     
  5. outlah

    outlah Regular Member

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    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...
     
  6. cooler

    cooler Regular Member

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    hey dinkie, the first link is obselete now, can u provide new link or post a snap shot of the table?
     
  7. DinkAlot

    DinkAlot dcbadminton
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    I need to update the file as there are more strings to add to the list...one of these days...

    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.)

    [​IMG]
     
  8. jerby

    jerby Regular Member

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    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 :eek: But I never tried it, so I can't know ;)
     
  9. DinkAlot

    DinkAlot dcbadminton
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    Hi Jerry, you are right about the ZM string measured with tension (not sure what tension); but the ZM stuff is not on the chart so I didn't want to confuse things.

    ZM62 at 30lbs. would be tighter than BG65 at 34lbs.!
     
  10. allyjack110

    allyjack110 Regular Member

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    Sorry to revive a somewhat 'old' thread but this is a very interesting and pertinent discussion. I'm not susprised by these findings as I've always suspected that certain strings are not quite the guage they are made out to be. For example, my current string of choice is the Zymax 70. However, looking at it with the naked eye I always felt it looked slightly thicker compared to my other string of choice, the BG65ti. I suppose, when we are dealing in such minute and precise measurements that it's hard to differentiate when solely using the naked eye. Similarly, I've used the Ashaway Micropower in the past, another 0.70mm string, and I found that noticebly thinner compared to both the BG65 and Zymax 70. I'm not a stringer (although I would love to learn) but maybe it has something to do with the stringing process. I know some stringers who pre-stretch their strings and others who don't bother.
     
  11. DinkAlot

    DinkAlot dcbadminton
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    Ally Jack: you are very perceptive. *thumbs up*
     
  12. Udonming

    Udonming Regular Member

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    Zymax67 silver.jpg Zymax 67 red.jpg
    Sorry to have opened a new thread on this topic. Attached are Zymax67 old silver and new red measured with a micrometer. So it should be confirmed that Ashaway's measurement is based on string that is tensioned rather than the other way round. BTW the micrometer used is Mitutoyo # 293-761-30.
     

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