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How to tell string tension?

Discussion in 'Badminton Rackets / Equipment' started by Spadroliken, May 4, 2013.

  1. Spadroliken

    Spadroliken Regular Member

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    Both my Z-force are strung at 27lbs but whenever I hit it with my hands to feel how the tension it's like, both racquets produces a different pitch. Which one is of a higher tension?
     
  2. visor

    visor Regular Member

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    the one with the higher pitch...
     
  3. Spadroliken

    Spadroliken Regular Member

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    I forgot to mention one weird factor. The one with the higher pitch is the one that was strung at 27lbs but I have not used it for 5 months or so. The one with the lower pitch however, is freshly strung at 27lbs but I don't know why it has a lower pitch. Any idea?
     
  4. visor

    visor Regular Member

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    same string, same stringer?
     
  5. Spadroliken

    Spadroliken Regular Member

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    Same string, different stringer. But significant difference.
     
  6. visor

    visor Regular Member

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    there's your answer... different stringer... if one of them uses ECP machine and the other a manual, then more often than not the ECP is at the correct tension
     
  7. Spadroliken

    Spadroliken Regular Member

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    Um, Same machine too. So...I don't think it's the machine's fault. Could it be the stringer's technique? But they both used the same way of stringing.
     
  8. Gollum

    Gollum Regular Member

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    Yes. Stringing requires a lot of skill to do well. There is a huge difference in quality between a so-so stringer and an excellent stringer.

    Using different strings could also affect the sound, but I don't think it would make much difference.
     
  9. visor

    visor Regular Member

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    http://en.wikipedia.org/wiki/Vibrating_string#Frequency_of_the_wave

    @Gollum

    String frequency depends on length, tension, and also
    linear density (hence thickness). :)

     
    #9 visor, May 5, 2013
    Last edited: May 5, 2013
  10. Gollum

    Gollum Regular Member

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    Good find! I had a feeling thinner strings made a higher pitch, but it's so long since I played with them I couldn't be sure.

    I'm getting some Zymax 62 tonight, in a rare departure from ole' reliable BG-80, so I shall reaquaint myself with the difference. :)
     
  11. visor

    visor Regular Member

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    Re zm62, don't mishit... or it'll be a really short departure from bg80. :p :)
     
  12. Gollum

    Gollum Regular Member

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    Yes, that's what I thought. And unfortunately I can't blame the stringer this time, 'cos he's absolutely ace. ;)
     
  13. kumache

    kumache Regular Member

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    actually u cant tell, human feelings change everyday..

    tenniscomputer.jpg 111(1).jpg 2222.jpg
    these u can trust. but they do cost u a fortune.
     
  14. visor

    visor Regular Member

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  15. aiexrlder

    aiexrlder Regular Member

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    would be interested to know if there's a different pitch for different strings
     
  16. visor

    visor Regular Member

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    Wth? Didn't you read my post above re string frequency factors, and the wiki link.
     
  17. aiexrlder

    aiexrlder Regular Member

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    i guess i need real life "evidence", not just theory :p also how much difference in pitch too
     
  18. SolsticeOfLight

    SolsticeOfLight Regular Member

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    Then look at a violin?
     
  19. visor

    visor Regular Member

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  20. Gollum

    Gollum Regular Member

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    Well, I just got my Zymax 62 @ 23 lbs. My other two rackets are recently (20th April) strung with BG80 @ 24 lbs. Zymax 62 is 0.62 mm, whereas BG80 is 0.68 mm.

    The Zymax strings have a much higher pitch. They sound at least 26 lbs to my ear, maybe even 28.

    They're also amazingly good and I'm crossing my fingers that they survive for two weeks.
     

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