New TWU Experiment: Spin and Sliding Friction

Discussion in 'Strings' started by TW Professor, Dec 7, 2010.

  1. TW Professor

    TW Professor Administrator

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    Check out the new experiment to determine the sliding friction between strings and its relation to spin:

    Spin and Sliding Friction

    Previous tools and experiments dealt with static friction:
    Static Friction and Spin
    String Friction Tool

    Static friction relates to the force necessary to get the string moving and sliding friction is about the force necessary to keep it moving.

    Eventually, the coefficients of sliding friction will be incorporated into the string friction tool also and more strings will be added to both.
     
    #1
  2. julian

    julian Hall of Fame

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    Usage of acronyms

    Sir,
    it would be a good idea to avoid using acronyms
    respectfully,
    julian
     
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  3. TW Professor

    TW Professor Administrator

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    Sorry. I agree...especially without any previous reference! I changed it.
     
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  4. TimothyO

    TimothyO Hall of Fame

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    Thank you for feeding my inner geek!
    :)

    Great stuff, really looking forward to more research!

    Please, please, please put VS + Xcel hybrid on your list of things to test!
     
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  5. Consolation

    Consolation Rookie

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    Not sure about the bold part. You do a good job of mentioning the limitations of the data you have, then go ahead and make a causal statment anyway =).

    This is great stuff you're doing, but it's a little spooky how quickly the static friction article became gospel to so many on this board as being a clear and definitive reference for which strings make more spin.

    Even the very first article you posted (http://twu.tennis-warehouse.com/learning_center/stringmovement.php) shows things are much more complicated (multiple strings showed increase in spin at higher tensions, with higher COFs).

    Anyway, hoping this latest list doesn't become the new definitive source for people to quote as to what the best string combo is...
     
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  6. julian

    julian Hall of Fame

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    Dunlop silk

    How dunlop silk fit into this picture?
    http://www.tennis-warehouse.com/Dunlop_Silk_17_String/descpageACDUNLOP-DSILK17.html
     
    #6
  7. Guardian

    Guardian New User

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    These numbers presented are very interesting! Looking at the data, Babolat Pro Hurricane Feel 16 catches my eye with the lowest sliding COF and a reasonably low static COF. Anyone tried this string?
     
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  8. jester911

    jester911 Rookie

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    I don't see how it is spooky that the he static friction article has caught on this much. For me it just confirmed what I suspected for a long time and I think many others were in the same boat.
     
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