Fixed clamp replacement from alternate brand

Discussion in 'Stringing Techniques / Stringing Machines' started by kopfan, Aug 19, 2012.

  1. kopfan

    kopfan Rookie

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    My machine is LaserFibre Quantum TT. Since LF is no longer available, anyone know which brand of fixed clamp can i get to replace on LF? Main intention is to get a pair of badmintion fc but would like to look at 3 teeth tennis fc as well. I found that Eagnas fc does look the same as mine. Any comment?

    It would be nice for anyone to advise which brand can co-use their fixed clamp on another brand's machine.
     
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  2. Irvin

    Irvin G.O.A.T.

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    You may try alpha or string way didn't they buy laser fibre?
     
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  3. Clintspin

    Clintspin Semi-Pro

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    Alpha took over the US distribution of Stringway machines but the Quantum is a machine of Laserfibre design and the clamps are probably much different. Can you post a picture of your clamps?
     
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  4. kopfan

    kopfan Rookie

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  5. Clintspin

    Clintspin Semi-Pro

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    I think you should be able to find replacements. As long as the diameter of the shaft is the same you should be good. I don't think TW carries any but a number of other sites do including ATS.
     
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  6. jim e

    jim e Hall of Fame

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    Not all machine clamps have the same diameter for the clamps.
    If I remember correctly a poster here has an Alpha machine and purchased the Eagnas clamps and had to have a machinist alter the clamps to make them fit, yet the Eagnas clamps do fit my machine (Xtremesportsmachines Pro Master ), and Eagnas also fits some of the Babolat machines, so not all machines clamps are interchangeable.

    I knew that the Eagnas fit the Star4, and the Star 4 fit my machine, therefore I knew the Eagnas was compatable with mine.
    I guess you would need to know the diameter, and Eagnas should be no help in obtaining dimensions as they specify they do not measure or help people with other machines.

    I don't even use my Eagnas clamps, as there is more drawback with those over the ones that came with my machine as those have hardly any drawback. I just keep the eagnas ones as back up in case something happens to the originals.
     
    Last edited: Aug 20, 2012
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  7. kopfan

    kopfan Rookie

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    Hi all, could all of u provide the shaft diameter of the clamp that u own, that way.. we can do a comparison. Thanks.
     
    Last edited: Aug 20, 2012
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  8. Irvin

    Irvin G.O.A.T.

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    Are you looking for glide bar or fixed Swivel clamps. It doesn't really matter because most people aren't going to have a micrometer to measure them accurately.
     
    Last edited: Aug 20, 2012
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  9. jim e

    jim e Hall of Fame

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    Irvin is correct. I do not have a micrometer (and most people are not going to) , and the ends of both makes I have have beveled ends so even hard to measure with measuring tape with any accuracy.Maybe if you know a local shop that has a popular machine like the Babolat Star 3 or 4 you can take your clamp and see if it fits properly, as if it does then the Eagnas that you posted would fit. I knew that mine would fit as I saw a picture of the stringers room at 2007 US open as those machines were same as mine, but one machine had Babolats clamps on it, so I knew the size was the same.
    Would be nice if someone here actually has your machine and changed out the clamps, but thats a rare chance. Probably better odds of winning a lottery.
     
    Last edited: Aug 20, 2012
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  10. kopfan

    kopfan Rookie

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    I agree that most people do not have a micrometer and i will try to measure the diameter of my clamp shaft by using a thin piece of paper strip around the shaft, mark it and measure it with ruler. At least close measurement by mm.
     
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  11. jim e

    jim e Hall of Fame

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    The clamp that I have and also the Eagnas clamp that you posted above earlier both measure at 50mm circumferance for the shaft circumferance.
    I hope this helps you. Jim
     
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  12. mmk

    mmk Professional

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    A 5/8" diameter works out to 49.87mm circumference, and .13 mm is only .005 inches. I'd guess that is within the measurement error.
     
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  13. coachrick

    coachrick Hall of Fame

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  14. jim e

    jim e Hall of Fame

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    You are correct, as all I used was a paper mm ruler and I would assume that's measurement error, as I had no idea if metric or standard size was used.This should give him an idea if the clamp would slide to place.
     
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  15. Irvin

    Irvin G.O.A.T.

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    So it could be 5/8" or it could be 50 mm. That's what you're saying isn't it (with the measurement error and all?)

    EDIT: Hate to play Devil's Advacate but you can't tell by looking if it's metric or SAE can you?
     
    Last edited: Aug 20, 2012
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  16. kopfan

    kopfan Rookie

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    i measure my clamp shaft to be close to 38mm circumference which would work out to be dia=cir/pi= 12.01mm (LaserFibre).
    (Eagnas) 50mm would work out to be 15.91mm in diameter.
    anyone else have any input of their clamp shaft diameter size?
     
    #16
  17. mmk

    mmk Professional

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    No, what I'm saying is that a 5/8" diameter works out to a circumference of 1.9634954 (plus a bit) inches. Converting that to metric results in a circumference of 49.87278mm. The posters who have measured their clamp shaft circumferences have measured 50mm, and I don't think their measurement methods are accurate enough to believe that the difference of 0.12722mm (0.005 inches plus a bit) is large enough to think that the shaft is anything other than a 5/8" shaft.

    If I worked it backwards from a circumference of 50mm, the metric diameter would be 15.9154943mm plus a bit, and I have a sneaking suspicion that no manufacturer deliberately makes metric sized shafts in that diameter. If we were to assume a 16mm diameter, then the circumference would be 50.2655mm (roughly).

    So, if they were to purchase clamps with a shaft diameter of 5/8", and the original was actually 16mm, the 5/8" shaft would fit, as that is 15.875mm, leaving a slop of 0.125mm (roughly 0.005 inches).

    The real answer is to find someone with a micrometer.
     
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  18. David 110

    David 110 New User

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    Eagnas clamp PN-1012 has a nominal diameter of 12mm (0.472") but I do not currently have one in stock to measure exactly. That means, in general, the size of the clamp shaft diameter is approximately 12mm and the hole in the swivel base is approximately 12mm. Some clearance is needed to allow the clamps to rotate, so the swivel base hole and the string clamp base cannot both be 12mm. The question then is how this clearance is machined into the parts. I have two different versions of Pros Pro clamps and bases. The swivel base holes measure (using a dial caliper) 0.481" which is slightly larger than 12mm and the string clamp shafts measure 0.465" which is slightly under 12mm. This allows a clearance of 0.016" The question then becomes whether clamps and bases from different manufacturers are made with the same dimensions. I think that most of these parts are made in the same plant in China and then used by various manufacturers so the dimensions are likely to be very similar and interchangeable. An inexpensive way to determine the LaserFiber clamp base hole diameter is to buy a 12mm bolt and the hardware store. It would be a close fit in the clamp base if the clamp base hole is a nominal 12mm. Buying the Eagnas clamp would then be a solution, but you may want to be sure that Eagnas will take the clamps back if they do not fit. I can sell you two Pros Pro clamps and would take them back if the fit is a problem.
     
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  19. kopfan

    kopfan Rookie

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    Anyone have gamma, alpha, etc.. fixed clamp circumference input for reference? Btw.. i saw pro's pro listed as 12mm diameter.
     
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  20. kopfan

    kopfan Rookie

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    Ok. Here's my finding and hope this help whoever have the same question.

    Eagnas, Pro's Pro, Gamma uses 12 mm diameter fixed clamp.
    Alpha uses base hosel of 12.7 mm (1/2 inch)
     
    #20
  21. struggle

    struggle Hall of Fame

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    ^^^ that's interesting as to me the eagnas/pros pro and alpha base clamps always "looked" identical to me. I'm only talking via photos, but heck....(i owned an eagnas, but have never set eyes on a live alpha, so....).

    anyhow, surprising to me. i do wish i'd have checked the eagnas clamps when i bought the gamma 6004 before i sold the eagnas. doh.
     
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  22. seekay

    seekay Semi-Pro

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    FWIW, I did exactly that. The Eagnas PN-1012 clamps fit in my new 6004 and would have been perfectly functional. But I found that the Gammas simply work better, so I sold the Eagnas clamps.
     
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  23. struggle

    struggle Hall of Fame

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    Yeah the 6004 clamps are far superior, i was just curious about fit.
    Thanks for the confirmation.
     
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