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spokes loosening(4 posts)

spokes looseningfreespirit
May 30, 2001 7:51 AM
I had some wheels built by a local shop. They have American Classic hubs, 24/28 spoke Velocity Arrowhead clincher rims, and 15/17 spokes with aluminum nipples; 3x drive side rear/straight pull non-drive

Spokes on the left side of the rear continually loosen to the point of having no tension at all; they rattle and you can move them around with your hands easily. I've taken them in to the shop, and they tighten them, but then they loosen after one ride.

Any suggestions? What are they doing wrong? Thanks.
re: spokes looseningTom C
May 30, 2001 9:20 AM
Could it be possible they are using the wrong length spokes. Thinner spokes should build with greater structural integrity than thick ones. That is,they share the work more.Loosening spokes seem to happen, in my experience, more often with thicker gauges. Try and remove the rim strip and looking straight down at the underside of the spoke nipple see if you can see the spoke shaft starting to poke through. If so, there may not be sufficient thread to tighten sufficiently in general, i.e. spokes are too long. Looks like back to the shop.
Spoke wind up.J.S.
May 30, 2001 2:03 PM
When I first built wheels with thin spokes(Revolutions) I had the same problem. What was happening was that the spokes would wind up, actually twisting and shortening rather than tightening in the nipple. Once riding, the spokes unwind and become loose. Most knowledgeable wheelbuilders know this and adjust for it in some way. I actually mark the spokes with an ink pen near the nipple so I can tell if the spoke is winding up. If you tighten the spokes with a quick movement they are less likely to wind up. Maybe you should take the wheels to a more experienced builder?
re: spokes looseningSpiderman
May 30, 2001 9:31 PM
i had this problem too, except on just one spoke on my rear wheel. Inside the nipple there should be something like loctite (not exactly the same) to hold the spoke from loosening. Rather than freezing the threads like loctite, it creates resistance so the spoke can't unwind. Take it to the LBS and have them slap some of that stuff in, should solve your problem.