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Cross and Main tension

Discussion in 'Badminton Stringing Techniques & Tools' started by BadGone, Sep 25, 2005.

  1. BadGone

    BadGone Regular Member

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    Hi,

    Sorry to ask but what does main and cross Stringing Tension refers to ?
    I've seen MP33 having :
    - Main:16-18 lbs(7-8 kg)
    - Cross:18-20 lbs(8-9 kg)

    Thanks
     
  2. malayali

    malayali Regular Member

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    this'll help you.............
     

    Attached Files:

  3. Sintec

    Sintec Regular Member

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    - Main:16-18 lbs(7-8 g)
    - Cross:18-20 lbs(8-9 g)
    Its gram, not kg i think, if kg, it will be super heavy?
    the higher the tension, the heaviler it is?


     
  4. BadGone

    BadGone Regular Member

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    Crystal clear
    thanks
     
  5. Pete LSD

    Pete LSD Regular Member

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  6. Pete LSD

    Pete LSD Regular Member

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    Question

    Sometimes I wonder if the full 10% more tension on the cross is justified when the requested tension is 30 lbs and more. Do other stringers with constant-pull machines notice the following?

    The frame warps slightly perpendicular to the axis of the shaft. I do not know how to explain this but imagine your hand is strong enough to apply a torque to the frame and the shaft is the axis of rotation and twist the frame. Width wise, the frame is perfectly fine - the frame is not narrowed in or bulged out.

    So far I notice 28 lbs is about the maximum tension a Ti-10 can handle without having its frame warped in such a manner.
     
  7. DinkAlot

    DinkAlot dcbadminton
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    Malayali: do you have a high resolution image of this? If so, please e-mail or link me to it, thanks. :)
     
  8. DinkAlot

    DinkAlot dcbadminton
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    I've strung a 2U Ti10 at 26/29 and noticed no problems. Highest I've strung a 3U Ti10 is 25/28 so far, no problems either.
     
  9. DinkAlot

    DinkAlot dcbadminton
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    What kind of stringing machine do you use and how many points?
     
  10. Pete LSD

    Pete LSD Regular Member

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    Laserfibre drop-weight MS-200 TT, five internal points of support and three clamp downs.

     
  11. jerby

    jerby Regular Member

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    it's kg..tension...

    imagine the string. 1 end tied around a ring in the ceiling. on teh other end you knot 10 kg of weight. the tension you fell on the string is the same as when you tension that string inside your racket at 10 kg)

    IT DOESN'T mean you have 10 kg of string in you racket....:D
     
  12. malayali

    malayali Regular Member

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    okey dokey......

     
  13. silentheart

    silentheart Regular Member

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    Interesting... I never notice that before. Just a guess and suggestion, did you ever check to see if all your mounting points are level? I would check the table to make sure it is leveled first. Then mount a stringed racquet (light tension) and use the buble level to check every corner of the racquet to see if it is leveled.
     
  14. Pete LSD

    Pete LSD Regular Member

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    The design of the MS-200 TT is such that the throat end is elevated with the badminton adaptors attached and the racquet mounted. So, this may explain the warping, but we need stringers with six-point suspension or clamp down constant-pull machines to do testing first.

     
  15. taneepak

    taneepak Regular Member

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    It shouldn't happen. Most high end racquets have to pass the torsion twist test at the factory. Maybe a manufacturing defect or maybe the racquet is getting old and getting racquet fatigue! :D Does the frame stay flat if you place it on a flat surface?
     
  16. Pete LSD

    Pete LSD Regular Member

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    Don't know about manufacturing defect. The racquets were brand new 2004 production batches when I got them. Yeah, the frame stays flat, but I do notice a tiny bit of twist. I just don't know. Maybe the human eyes and hands go funny :D .

     
    #16 Pete LSD, Oct 17, 2005
    Last edited: Oct 17, 2005
  17. Noob848

    Noob848 Regular Member

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    i have a little thought, since most modern racquets can take up to 30lbs then why should you worry about the 10% tension rule, correct me if im wrong but, that 10% more on the cross doesn't help much does it?
     
  18. taneepak

    taneepak Regular Member

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    It is 10% on a static basis. Once strung the dynamic difference is way below 10%. To put it another way, if you string your mains and crosses with the same tension, you will end up with the mains having a dynamic tension of close to 10% higher than the crosses. Do you want this?
     
  19. Wong8Egg

    Wong8Egg Regular Member

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    do you have a larger version of this diagram??
    Thanks alot
     
  20. DinkAlot

    DinkAlot dcbadminton
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    Eepak, so is this what you are saying:

    Static: 25lbs. main and cross = Dynamic: 27.5lbs. main and 25lbs. cross?

    If so, then stringing (static) at 25lbs. main and 28lbs. cross would give you what for the main (dynamic)?
     

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