Cross Tensioning?

Discussion in 'Stringing Techniques / Stringing Machines' started by redfist1000, Nov 30, 2010.

  1. redfist1000

    redfist1000 New User

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    I've been having problems lately with the tension on my crosses (especially with 17 and 18 guages). Even strung at 58, you can take two consecutive crosses and slide them next to each other and they will stay there. It seems way lower than it should. I wonder if this has anything to do with my clamping. I used to clamp too tight and the strings would look thin where it was clamped. I started to clamp looser to get a better "sweetspot feel" and the clamp feels just right. Even with cleaned clamps this is a problem. Does anyone have a solution?

    I use a klippermate and their clamps.
     
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  2. pvaudio

    pvaudio Legend

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    Wait, you mean that the crosses can be moved right next to one another after stringing? If this is full poly, then I guess it's not that strange, but nonetheless, that doesn't make sense. Do you have a picture of a strung frame?
     
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  3. redfist1000

    redfist1000 New User

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    no i gave it back to my friend, however it has happened a couple of times already, its as if the crosses are being strung at a very low tension, but my dropweight is set at 58. I believe it could be because of my clamping, but whenever I clamp tighter it messes up the string.
     
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  4. dancraig

    dancraig Hall of Fame

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    Make sure your clamps aren't slipping.
    Also, clean your gripper. Sometimes the Klippermate gripper needs cleaning after just a few jobs, especially after strings with a lot of coating on them. You will need to disassemble the gripper to clean it well. As I recall, there are two hex screws to remove. Make note of how it comes apart, so you can reassemble correctly.
     
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  5. redfist1000

    redfist1000 New User

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    I have read many people do not clean their grippers. How can I make sure slipping doesn't occur and what is the significance of cleaning the gripper? Does it prevent the string from slipping?
     
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  6. dancraig

    dancraig Hall of Fame

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    I started on a Klippermate, many years ago, and did hundreds of racquets on it. I had to clean my gripper all the time. It will slip when pulling tension if silicone has built up, from the coating on the strings.
    I tried to do a quick job by leaving it in place and cleaning, but this never resulted in a gripper that didn't slip. I realized I had to take it off and clean it well, as advised in the owner's manual. It is easy to do, just be sure to look at it closely so you can reassemble correctly.
     
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  7. dancraig

    dancraig Hall of Fame

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    #7
  8. redfist1000

    redfist1000 New User

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    yeah thanks for the link, I always thought that as long as the clamp was in place they would hold then tension just well. However, it does seem that tension loss occurs if the clamps are set too loose, even if it still clamping on the strings. However, the problem is that clamping too tight marks the string. I will try cleaning my cam gripper too next time and then look at the tension maintenance.
     
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  9. aussie

    aussie Professional

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    redfist, don't worry too much if the clamps flatten the string slightly. I would much have the strings slightly flattened than have the crosses slip through the clamps. In any case, the flattened strings would be close to the frame, well away from the impact zone. Be assured, the slightly flattened strings will not affect playability or durability.

    As mentioned in my post in the above link, clean those floating clamps every so often with 120 grit abrasive cloth - the teeth and the center spacer. Good luck, aussie.
     
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  10. Irvin

    Irvin G.O.A.T.

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    Which racket are you stringing? Edit - Forget that I see you are stringing a Wilson. The reason I asked was because a friend of mine was double pulling his stirng on a Prince ported racket and had that problem. But apparently that is not your problem.

    Irvin
     
    Last edited: Dec 2, 2010
    #10
  11. redfist1000

    redfist1000 New User

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    actaully I have no problems stringing my wilson which i mainly do in 16 gauge, however, I see this occuring when I string my friend's PDGT and Youtek Speed Pro, and I see this happening flattening happening on strings like Blue Gear (16 gauge) and Pro hurricane (17 guage) however, for other strings there are just markings on them from the clamps.

    Thanks for the help though. I have been cleaning my clamps with the sample klipper gave me, but I will try cleaning my cam gripper as well.
     
    #11
  12. jefferson

    jefferson Semi-Pro

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    It sounds to me like, the clamps may be slipping. Sometimes that is hard to see but if you put a little mark on the string, clamp and then release the tension, then you can see if the string is moving then its the clamps.
    I used to have a Czech drop weight and I had to clean the gripper all the time. Even though it was a gritty metal, the oils from the strings had to be cleaned off, often. I used rubbing alcohol to wipe it down.
     
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  13. redfist1000

    redfist1000 New User

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    Yeah that may be the problem, I see the strings move a bit sometimes while tensioning
     
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  14. aussie

    aussie Professional

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    You will always notice a little drawback on the last tensioned cross when you remove the floating clamp. However, when you tension the next couple of crosses the drawback on that cross is removed. Another reason to raise the tension on the last cross you tension!

    Also make sure you clean the gripper jaws with a suitable solvent around every 6 stringjobs. BTW you can tell when the string is slipping through the jaws by the dropping of the tension bar - it just keeps slowly dropping when released. Make sure the smaller gripper jaw is cleaned very thoroughly because it plays the major role in the gripping process.

    Also, to make sure the string isn't slipping through the jaws you can wrap the string around the jaws before inserting. More time consuming, but eliminates all chance of slipping through the jaws.
     
    #14
  15. pvaudio

    pvaudio Legend

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    Guys, you do realize that there are people on here stringing at 30lbs as their regular setups. There's no way that you can slide the crosses together so that they touch. Either we're not getting something or something is seriously wrong. Even slipping string isn't enough to cause that.
     
    #15

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