Stringing higher tensions; racquet stretch

Discussion in 'Stringing Techniques / Stringing Machines' started by Roforot, Jun 24, 2012.

  1. Roforot

    Roforot Professional

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    Lately I've started paying more attention to how I string. I've also gone up on tension from 40s to 60 and I've noticed that the hoop of the racquet is stretched out nearly a finger tip away from the 12'oclock mount.

    I don't know if this is normal and always occurred; because of the higher tension, I'm spending more time letting the string stretch that I noticed this?

    This has made me a bit anxious to move on to tensioning the 2nd main at the throat which seems to bring the racquet back to normal.

    I've wondered if it is recommended to pull tension on the left main#1, and feed the right main into the throat and then double pulling (right mains 1 and 2) there to correct the stretch quicker?

    I'm using an Alpha drop weight stringer w/ fixed clamps and 6pt. mounting system. Now that I think about it, I recently strung up a racquet w/ Poly mains at 35# and didn't see this. My racquet's a Yonnex w/ recommended tension 55-65#. I was using Laserfiber Laserlite XL. There are no cracks and to be honest, I don't notice anything when I play.

    Is this bad for the frame? Will a starting clamp alleviate this? Should I be measuring the width/height of the hoop pre and post stringing?
     
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  2. fortun8son

    fortun8son Hall of Fame

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    This does not seem right.
    Are you sure that the mounts/towers are tight?
    If anything, the frame should try to compress while tensioning mains , not elongate.
     
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  3. Roforot

    Roforot Professional

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    Hmmm... I looked at the starting youtube vid from Mr.10stringer w/ fixed clamps and I may be doing things a bit different.

    I use my fixed clamp by the throat of the first right main.

    I pull the left main and clamp it by the head.

    I then tension the right main. Release the clamp at the throat and move it to the head.

    Is this the culprit?

    As far as I can see the racquet is secure and doesn't seem to move. Initially when I saw the space at 12'o clock, I stopped and took off tension and remounted to make sure it was snug.
     
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  4. fortun8son

    fortun8son Hall of Fame

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    The procedure sounds correct.
    There should not be a space at 12 o'clock unless the frame or mounting tower is slipping.
     
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  5. zapvor

    zapvor Legend

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    you are not stringing a donnay are you? those things scare me
     
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  6. bugeyed

    bugeyed Semi-Pro

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    If you are seeing the elongation when pulling that second main, the 6 o'clock mount is probably flexing. Make sure that the upper wing supports are snug & take a look at how that 6 o'clock mount looks when applying tension. Try to determine if the movement is in the base, the pedestal or the billiard area.

    Cheers,
    kev
     
    #6
  7. Woolybugger

    Woolybugger Rookie

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    If you're using an Alpha Pioneer DC PLus dropweight, towers slipping is a known problem. Search through the previous threads for all sorts of different solutions. I just used a piece of old leather in between the towers and the base - no more slipping.
     
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  8. Roforot

    Roforot Professional

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    Yes Woolybugger, I'm using a Pioneer DC Plus!

    When I have the racquet mounted first, I test to see if it's secure by trying to move or wiggle it by the handle. Is there a better test of security?

    I'll take a look at the towers when I go into work. Can I detect if they're loose just by looking at them or do I need to install a racquet and tension a string?

    Thanks again for the advice. I'll check for more feedback on the DC plus. As far as I know, I haven't had any cracks or damage but I don't want to take a chance.
     
    #8
  9. Woolybugger

    Woolybugger Rookie

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    they will slip only when you pull tension so watch the towers carefully!
     
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  10. Ramon

    Ramon Hall of Fame

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    That is correct. I have the same machine and the same problem. The towers do slip, and it's sometimes referred to as creep.

    Woolybugger, thanks for the suggestion on the piece of leather. I've been trying it myself and it seems to work. I notice the screws get looser after the leather settles, so maybe it's a good idea to tighten them after a few minutes also?
     
    #10
  11. Ramon

    Ramon Hall of Fame

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    I noticed that the distance between one of the towers and the end of the rail was greater after the string job than before the string job. The other tower stayed in place.
     
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