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CONTEST: Guess the tension loss (with MORE PRIZE!!!)

Discussion in 'Badminton Stringing Techniques & Tools' started by kwun, Mar 21, 2012.

  1. kwun

    kwun Administrator

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    imagine the scenario when starting cross strings at B9->D9.

    1) if i tie off on B8 or B7. and pull 30lbs at D9. what is the tension outside B9?

    2) if i weave 2 strings B9->D9, D10->B10, then i pull once at B10, what is the tension outside B9?

    answers must be in pounds of tension and must be a single number and not a range.

    the formula for closest will be the sum of the absolute of difference.

    the value will be taken from measurement from my machine. the value will be taken 1 minute after my WISE beeps to let the tension settle. setting will be fast speed, no pre-stretch, constant pull.

    The PRIZES

    - one Li-Ning Performance Shirt
    Sponsored by www.badminton-nation.com

    - one package of the new Yonex NBG99
    Sponsored by www.mybadmintonstore.com

    - one 10metre length of Zymax String of your choice (ZM62/65/67/70)
    ZM62 will be cut from a reel. ZM65/67/70 will be a package.

    (i might add more prizes later if i can find more sponsors)



    DEADLINE IS 11:59pm PST, Saturday, March 31st.
    The answer will be revealed in a video of the measurement.

    Informational Video:

    [video=youtube;LV9UuIdbaF0]http://www.youtube.com/watch?v=LV9UuIdbaF0&feature=g-upl&context=G241c156AUAAAAAAAAAA[/video]

    (image for naming reference only)

    [​IMG]
     
  2. yan.v

    yan.v Regular Member

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    *Peeks at neighbor's sheet*

    I'd take a wild guess and say:
    1) About 27-28 lbs
    2) About 24-25 lbs
     
  3. kwun

    kwun Administrator

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    for reference sake, let's assume string used is BG65Ti.
     
  4. kwun

    kwun Administrator

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    actually, to make this more fun. i am going to add a prize for one who gets the closest answer.

    the prize will be 10metre length of Zymax String of your choice (ZM62/65/67/70)

    ZM62 will be cut from a reel.
    ZM65/67/70 will be a package.

    the formula for "closeness" will be the sum of the absolute of difference.

    the value will be taken from measurement from my machine.
     
  5. kwun

    kwun Administrator

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    since i added the prize after yan.v posted. he can repost his answer.

    answer must be in lbs and must be a number and not a range.
     
  6. kwun

    kwun Administrator

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    more rules / clarifications.

    deadline is 11.59pm PST, 31st March, 2012.

    entry answers must be posted in this thread.

    one answer per person. if multiple answers, the FIRST answer posted will be used.
     
  7. AlanY

    AlanY Regular Member

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    with prize? now you're talking!

    1) 29.5
    2) 29.0
     
  8. aloy66

    aloy66 Regular Member

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    Wild guess,

    1) 26 lbs
    2) 24 lbs
     
  9. yan.v

    yan.v Regular Member

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    I'll still stay with the same values :p
    1) 27.2 lbs (.2 for added flavour :p)
    2) 24 lbs
     
  10. CanucksDynasty

    CanucksDynasty Regular Member

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    I don't know anything about stringing so...


    1) 29.6 lbs
    2) 29.2 lbs
     
  11. visor

    visor Regular Member

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    1. 30.
    2. 28.
     
  12. khmaiboi92

    khmaiboi92 Regular Member

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    1) 28lbs
    2) 25lbs
     
  13. silentheart

    silentheart Regular Member

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    Is pre stretch on?

    #2 Please define double pull. Is it
    1) Pulling string on B10 at 30lb till your regular tension head stop?
    2) Pulling string on B10 at 30lb. release then pull it again at 30lb till your tension head stop?

    Thank you.
     
  14. kwun

    kwun Administrator

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    weave 2 strings.
    one pull only at B10 at 30lbs till tension head stops.

    i will post a video of the process soon.
     
  15. visor

    visor Regular Member

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    ^^ then you can't call that a double pull! :p
     
  16. kwun

    kwun Administrator

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    more clarifications:

    the value will be taken from measurement from my machine. the value will be taken 1 minute after my WISE beeps to let the tension settle. setting will be fast speed, no pre-stretch, constant pull.


     
  17. kwun

    kwun Administrator

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    i have clarified the wording on the original post.

    whoever posted their answers, feel free to repost it... ;)
     
  18. Udonming

    Udonming Regular Member

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    How you gonna measure the tension on B9 after you tension the string in both cases.
     
  19. kwun

    kwun Administrator

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    wait for the video later today. that will clarify the method.
     
  20. Mark A

    Mark A Regular Member

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    Do I understand this correctly - a test to see if pulling the second cross, and leaving out the first, results in tension loss on the second cross?

    My guesses, for the record, are 29.6 and 28.6, but I am interested in the result (if I've gleaned the correct meaning).
     

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