Stringbed frequency to monitor string tension

Discussion in 'Badminton String' started by visor, Feb 27, 2013.

  1. Mark A

    Mark A Regular Member

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    I got 1500 with LN#1 on a JS-10... wonder what a ZSP would have come up with!
     
  2. s_mair

    s_mair Regular Member

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    And replace #1 with #3 or AS and the 1600 Hz should not be far...
     
  3. Mark A

    Mark A Regular Member

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    Yonex always takes 0.02 off their strings, IME; better chance with the LN#3;).
     
  4. hieucdub

    hieucdub Regular Member

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    That's interesting. So does that mean the AS is 0.63 instead of 0.61 and the 66um is 0.67 instead of 0.65?
     
  5. Mark A

    Mark A Regular Member

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    Haven't measured the recent Yonexes, but the ones I have measured have always come in 0.02-ish over.

    In fact, only Ashaway, IME, gets it right.
     
  6. hieucdub

    hieucdub Regular Member

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    I see. Could you enlighten me on which Yonex ones that come 0.02-ish over?
     
  7. Mark A

    Mark A Regular Member

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    Tends to be the thin ones - 66, 66M, 66UM, and the like.

    Haven't had any Aerosonic to test, though, so I can't comment.
     
  8. ucantseeme

    ucantseeme Regular Member

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    You can check AS, too. Measured it a few days ago @0.63x.

    Ashaway gets it right? Don't make me laugh...
     
  9. FeatherBlaster

    FeatherBlaster Regular Member

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    Are you kidding me?

    Yonex must be closer to the listed thickness than Ashaway. By a considerable margin.
     
  10. FeatherBlaster

    FeatherBlaster Regular Member

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    Is this measured with a tensioned or slack string BTW?
     
  11. ucantseeme

    ucantseeme Regular Member

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    NS7700: NBG99 @ 22 x 24 = 1127 Hz
    VT5: BG80Power @ 22 x 24 = 1125 Hz
    my 1st JS10: ZM66FP @ 22 x 24 = 1173 Hz
    my 2nd JS10: BG80 @ 30 x 31 = 1331 Hz

    Now, I need just to do the laundry...
     
  12. FeatherBlaster

    FeatherBlaster Regular Member

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    Arc11 BGAS 11,25x12,25: 1330
     
  13. FeatherBlaster

    FeatherBlaster Regular Member

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    Why only +1 on the BG80, when you go +2 with the ZM on much lower tension?

    BG80 is rough, I'd expect it to be the other way around.

    Pre-tension?
     
  14. ucantseeme

    ucantseeme Regular Member

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    Good question, eagle eye. :) Normally I do always +2lbs as default for all my customers since ages. My own rackets or on special requests I do just +1lbs or square. I had a period when I did +1 for all my customers but get the feedback that something changed in terms of feel, so I switched back to the +2lbs rule. IMO +1lbs plays at the moment best for me. Both JS10 came out at same shape. I did +2lbs on my JS10 and much lower tension because my XD partner want to demo some rackets. She tried my JS10 at 30/31 but was curious how it plays at her set up. So I run for once ZM66FP @22/24 for her:oops:.
     
  15. FeatherBlaster

    FeatherBlaster Regular Member

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    Interesting... :)

    I would like to round up a few question and observations about this subject, but will do so in the correct thread.

    For now, did you notice any difference in the sound characteristics of the two? (I mean, did one have a cleaner or more crisp sound, with a longer decay).

    And did you string with Pre-tension enabled?
     
  16. Razor-BladE

    Razor-BladE Regular Member

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    AVP + Gosen G-Tone 5 @ 30lbs = 1385Hz

    Comes out a little rounder so I'm going to start putting +2lbs on the cross.
     
  17. Razor-BladE

    Razor-BladE Regular Member

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    Tantrum 200 + Gosen G-Tone 5 @ 29/31lbs = 1345Hz

    Still rounder than before. The only thing I changed was the side support position, so I'll put that back to where it was before and see how the next one turns out.
     
  18. Exert

    Exert Regular Member

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    How is 1246 for 25x25 for a Thruster K-15 with BG 80. Recently switched to equal ratio.


    Sent from my iPhone using Tapatalk
     
  19. s_mair

    s_mair Regular Member

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    Seems to be quite high. I would have expected something around 1150-1170 Hz. The TK15 has a standard isometric head, right?
     
  20. ucantseeme

    ucantseeme Regular Member

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    AFAIK TK15 is small head, but let us calculate:

    Transition to my tension: 25lbs + 6lbs = 30lbs = 1246Hz + 180Hz = 1426Hz. Seems high by around 70-90Hz
    Transition to Mark's: 25lbs + 9lbs = 34lbs = 1246Hz + 270 = 1516Hz. Same conclusion.

    With all respect, I think it is 2-3lbs over. BG80 is thicker and pings lower than RX110. @s_mair also awaited average 1150-1170Hz which is also a difference of 96...86...76 Hz. So 2-3lbs higher is an objective assessment.
     

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