Racket flexibility influence on string life

Discussion in 'Strings' started by Up&comer, Oct 17, 2012.

  1. Up&comer

    Up&comer Hall of Fame

    Joined:
    Dec 31, 2010
    Messages:
    2,991
    Location:
    The net
    Just an interesting topic I saw in Mikeler's thread for discussion. Do you think that, all things being equal, a flexible racket or a stiffer racket would break strings more often? I think that there are more factors like string pattern, head size, and in prince rackets the grommets, that influence it more, but what influence do you think flexibility has on string life?
     
    #1
  2. bugeyed

    bugeyed Semi-Pro

    Joined:
    Sep 14, 2010
    Messages:
    543
    Location:
    Tx
    Very, very little, if any. Maybe the teeny, tiniest effect when a ball is hit right next to the frame.


    kev
     
    #2
  3. pvaudio

    pvaudio Legend

    Joined:
    Jul 13, 2009
    Messages:
    7,543
    Looking at it from an engineering standpoint, just about none at all.
     
    #3
  4. LeeD

    LeeD Bionic Poster

    Joined:
    Dec 28, 2008
    Messages:
    35,707
    Conventional thought thinks a softer racket absorbs impacts, so the string does less work. A stiffer racket should transmit more impact, so the strings have to absorb the vibration/shock.
    All things being equal, which they seldom are.
    Fire a 12 gauge shotgun. Big kick. Try it without the shoulder pad. The buttpad is soft, not hard.
     
    #4
  5. Ramon

    Ramon Hall of Fame

    Joined:
    Sep 4, 2011
    Messages:
    3,576
    Location:
    Florida
    Anecdotal evidence tells me that flexible racquets break strings more because the EXO3 Tour 100 has a big reputation for breaking strings. It's hard to compare older racquets of the past because their heads were so much smaller and string patterns were more closed.

    I had mentioned on another thread that the head flexes more on impact, so the main strings would have to stretch more. Think about those slow motion videos of a ball hitting a racquet near the top of the frame and how much it flexes. Another factor I thought about is the dwell time, which is high on the Tour model. This explains the high amount of spin you get from it and also the tendency for the strings to move. If the strings move more, that means more friction between strings and less string life.
     
    #5
  6. keithfival

    keithfival Professional

    Joined:
    Aug 23, 2010
    Messages:
    849
    I would imagine that has a lot to do with how much the strings move on the Exo Tour with the string ports.

    The only frame I've had where strings kept breaking on me was the AG 4D 500 Tour which is very stiff. It certainly *seemed* like it was related to the stiffness but I have no data to support that.
     
    #6
  7. pvaudio

    pvaudio Legend

    Joined:
    Jul 13, 2009
    Messages:
    7,543
    It likely has more to do with the enormous holes in the frame designed specifically so that the strings are free to move unlike with traditional grommets.
     
    #7
  8. mikeler

    mikeler G.O.A.T.

    Joined:
    Sep 26, 2008
    Messages:
    19,552
    Location:
    Central Florida
    Thanks for starting the thread U&C. Good discussion so far.
     
    #8
  9. 0d1n

    0d1n Hall of Fame

    Joined:
    Jul 8, 2006
    Messages:
    3,674
    Location:
    Cluj-Napoca, Romania
    There are custom racquets Angell / ex Vantage that come with identical specs/molds in two different flex options.
    It is the only way I know of to even remotely objectively measure the impact flex has on string durability.
    I'm not interested enough to buy a higher flex racquet just to try this. Also...replicating the playtest conditions over a period of weeks would be tough, and I know for a fact that a different hitting partner, different balls used or significantly different temperatures might influence the string durability more than the different flex of the racquet :).
     
    #9
  10. blastforehand

    blastforehand Rookie

    Joined:
    Feb 12, 2009
    Messages:
    122
    In my experience stiffer frames wear strings much faster than more flexible frames.
     
    #10
  11. mrmike

    mrmike Rookie

    Joined:
    Oct 19, 2011
    Messages:
    369
    Is there an option available to put standard grommets on the Prince EXO frames ? I thought I heard talk of this in the past.
     
    #11
  12. mrmike

    mrmike Rookie

    Joined:
    Oct 19, 2011
    Messages:
    369
    #12
  13. mikeler

    mikeler G.O.A.T.

    Joined:
    Sep 26, 2008
    Messages:
    19,552
    Location:
    Central Florida
    #13
  14. coolblue123

    coolblue123 Hall of Fame

    Joined:
    Mar 2, 2006
    Messages:
    1,774
    Location:
    Rockville, MD
    please correct me but my only guess is that most stiffer racquet have more open string pattern. (squares are bigger) this result in more movement thus friction so it causes strings to break. I don't think racquet flexibility has much bearing on it.
     
    #14
  15. mrmike

    mrmike Rookie

    Joined:
    Oct 19, 2011
    Messages:
    369
    Yeah, you are probably right about that. I was thinking it may help reduce string movement and cut down on breakage. Probably also changes the feel which may be positive or negative depending on the player.
     
    #15

Share This Page