Spin potential polyester & natural gut?

Discussion in 'Strings' started by dknotty, Jun 16, 2013.

  1. dknotty

    dknotty Semi-Pro

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    All other things being equal, what is the difference in spin potential between natural gut and polyester?
     
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  2. Lukhas

    Lukhas Legend

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    Co-poly>>>Nat. Gut>>S-gut and most multis. Doesn't compare, the spin is much better. Although for some reason, gut mains with co-poly crosses gives plenty of spin.
     
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  3. NLBwell

    NLBwell Legend

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    Polys will give more spin than full gut stringbeds, but I don't think the absolute difference is as much as Lukhas implies. What you get with the poly strings is a much higher ratio of spin to ball velocity so the ball will dive into the court instead of flying long.
     
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  4. dknotty

    dknotty Semi-Pro

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    I had a few minutes of play with an APD strung with Babolat VS gut and have to say I really enjoyed it. It felt lovely on the ball and the spin generation seemed pretty good, but I didn't have enough time to really get a great sense.
     
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  5. ultradr

    ultradr Hall of Fame

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    Some reports suggested natural gut 10%, polyester 20% more spin than nylon.
     
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  6. Rjtennis

    Rjtennis Hall of Fame

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    I believe that I can get just as much spin with VS mains and poly crosses as I can with a full bed of poly and the hybrid plays much, much better all-around. I don't think I would like using a full bed of gut but the hybrid is excellent.
     
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  7. Steve Huff

    Steve Huff Legend

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    One of the guys I string for switched from Pro Supex Blue Gear17/Gosen OG Micro 17 at 55/60 to Klip Legend 15L/Signum Pro Poly Plasma 1.28 at 60/56 and swears he gets more spin now. I use natural gut in the mains (with Shock Shield in the crosses) and I get plenty of spin. But, it's hard to compare apples to apples here. A poly strung at the same tension as natural gut would be far less powerful. So, when you compare power level to power level, I think natural gut would give you more spin. Sampras got more rpm on his serve than anyone, and he used natural gut. However, it was strung really tight, which you wouldn't want to do with a poly.
     
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  8. Maui19

    Maui19 Hall of Fame

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    I play a guy/poly hybrid. One of my favorite combos is gut/Big Hitter Blue Rough. It allows me to put a lot of spin on the ball. Recently I tried a full bed of BHBR and found it to be pretty similar to the gut/BHBR I had been playing. Obviously it was slightly less powerful and much more harsh, but the spin properties seemed similar.

    If you look at the TW friction tool, it shows gut/poly hybrids to be generally the lowest friction setups, and low friction=more spin.
     
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  9. mikeler

    mikeler G.O.A.T.

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    I love that "t" and "y" are so close on the keyboard. :)
     
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  10. ChicagoJack

    ChicagoJack Hall of Fame

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    Hi dknotty,

    Just about everything that there is to say on that question can be found right here in our very own TW University. In particular, ya might wanna give a quick gander to these two particular passages:

    Quote 1: "What is further apparent is that the results of three previous experiments are qualitatively similar: polyester in general moves more than nylon or gut and produces more spin. That does not mean that individual strings of a particular material cannot perform much better than the average for that material. However, because spin performance does seem (at least at present) to correlate to material, the question is what is it about the string/material that makes it move and stretch laterally? The candidates from TWU string properties testing would suggest stiffness, tension loss, and slipperiness as the main candidates. Polyester is stiffer, loses more tension, and is slippery. The stiffer material may be more able to overcome interstring friction or move faster, the lower tension decreases interstring friction enabling more movement, and slipperiness (low coefficient of friction — COF) also lessens interstring friction. These may all act in interactive combinations to facilitate string movement and snap-back. The precise mechanisms of snap-back are yet to be determined.

    But it must be remembered that just because a particular string has better spin properties, that does not mean that the player will be able to hit more spin with it. The main contributors to spin, over and above the equipment, are the speed and angle of the swing. If the equipment setup causes the player, for control, strategic, or confidence reasons, to alter the swing, then there may be a decrease in spin. Contrawise, the player might speed up the swing or increase the attack angle or racquet tilt and get even more spin. That, probably, is the reason that lab tests and play tests don't always agree for everyone. "

    http://twu.tennis-warehouse.com/learning_center/stringmovementPart2.php


    [..]


    Quote 2:

    32 Degrees: Not including the wide open pattern, the poly had 17% more spin than the nylon, with gut in the middle. Including the open pattern, the difference was 36%.

    37 Degrees: Not including the wide open pattern, the poly had 9% more spin than the nylon, with gut in the middle. Including the open pattern, the difference was 31%.

    42 Degrees: Not including the wide open pattern, the poly and the gut had 8% more spin than the nylon. Including the open pattern, the difference was 16%.

    http://twu.tennis-warehouse.com/learning_center/stringmovementPart2.php


    [..]


    On Hybrids : Gut mains, and poly crosses have the lowest inter-string friction of all hybrid combinations. However, when the hybrid is reversed, with Poly mains, and gut crosses, that combo has amongst the highest. So understand that both gut and poly behave quite differently depending upon how they are paired.

    -Jack
     
    Last edited: Jun 17, 2013
    #10

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