Stringbed frequency to monitor string tension

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

  1. visor

    visor Regular Member

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    Update:
    1125 12h play
    1115 14h play
    1105 16h play

    Hmmm... seems like it drops 10 Hz after each 2h session...
     
  2. blableblibloblu

    blableblibloblu Regular Member

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    This thread just makes me realize I'm going to stick to performance strings because most of the time I end up cutting the stringbed before it breaks anyways.

    VS850 might not be that bad afterall ;)
     
  3. msitpro

    msitpro Regular Member

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    Another data point for you:

    Apacs Lurid Power (0.65) on NS8000 @ 26.5 x 28.5 Fresh = 1360Hz

    After playing 5 singles games 3 hours later = 1330Hz


    Quite impressed with that string so far....
     
  4. Mark A

    Mark A Regular Member

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    In orange? I got as far as the second main when I tried to put that in at 30!
     
  5. msitpro

    msitpro Regular Member

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    Nah White.

    Got 2 packs free with 2 Apacs bats I bought. (now sold)

    String seems like a nice performer tho... Nice to string too, very slightly rough (but very much a smooth string, just not like NBG smooth), like BG-66, doesn't kink very easily, doesn't go limp while trying to push through shared holes like Zymax does. :p
     
  6. blableblibloblu

    blableblibloblu Regular Member

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    thats a pretty high frequency for that tension. I'm assuming it's 0.65 untensioned
     
  7. msitpro

    msitpro Regular Member

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    Yes, 0.65mm

    I am surprised how high it is too. Machine tension was checked before and after with digital scales using NBG-98 at settled tension (waited for tension creep-back from crank)
     
  8. visor

    visor Regular Member

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    1330 Hz at 28.5 lbs?! That's the same as Mark's zm62 at 31 lbs!
    Something is not right...
     
  9. msitpro

    msitpro Regular Member

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    24 hrs - 1236 Hz

    Agree something is weird...
     
  10. blableblibloblu

    blableblibloblu Regular Member

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    alright visor, this ones for you

    BG65 1280hz fresh out of the machine
    Approximate tension?
     
  11. visor

    visor Regular Member

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    Hmmm... haven't measure BG65 before, but assuming it's nicely prestretched and is like ZM70 in thickness behaviour, then assuming 100 Hz drop after a few days to stabilize around 1180 Hz, that'd be about 28 lbs or so ...
     
  12. cobalt

    cobalt Moderator

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    I say 34 lbs
     
  13. blableblibloblu

    blableblibloblu Regular Member

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    it's about 31 lbs (was forced to do my cross tieoff where kwun does his because bg65 wasn't cooperating) so technically if we do your average you guys got it :p

    Was weird stringing bg65 after stringing mainly bg80 and zm62 for a few months... guess I was spoiled a little
     
  14. R20190

    R20190 Regular Member

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    Very interesting topic this.

    Are there any good free iphone apps?
     
  15. visor

    visor Regular Member

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    Whew... thanks to cobalt we have the right answer. :) Please update us with the readings after a few days and first game day.
     
  16. visor

    visor Regular Member

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    I haven't used an iPhone since switching to S3 for a year, but Clear Tune was the best I came across. Only $1.
     
  17. visor

    visor Regular Member

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    Re BG65, that just shows how much tension loss there is with this string. I had assumed 100 Hz drop like ZM70, but if I had assumed 180 Hz drop, then that'd make it 31 lbs. :)

    Did you prestretch?
     
  18. blableblibloblu

    blableblibloblu Regular Member

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    Just 10% on the WISE. It could probably benefit from being prestretched at 15% but I limit myself to 28-29lbs on the last top cross so 15% is a no go for me at that tension.
     
  19. visor

    visor Regular Member

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    ^ Ah, no wonder... usually with this string and VS850, I'd need 20% prestretch.

    In your case, you'll probably have 200 Hz drop after a few sessions. Keep us updated.
     
  20. R20190

    R20190 Regular Member

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    I've had a look on the appstore and it's gone up to about $4 now. I'm only going to use it to see what you guys are saying and probably won't take it as seriously as you guys so want to see if there is something free instead.
     

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