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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Spokes Loosening
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<blockquote data-quote="Prosper Keating" data-source="post: 8564" data-attributes="member: 1376"><p>A dab of light oil or grease is alright on spoke threads but if the spoke threads and the nipple threads are well-formed, you should be able to dispense with lubrication, especially if different metals are involved. I would say that "Coppereaze" or any similar copper-based anti-seize compound, being very slippery stuff, would impede or prevent the threads from maintaining a torque figure, especially under the stresses in question, thereby allowing them to slacken off quite quickly in use. This may be the cause of your problem. Once set up, spoked wheels should only need tuning up comparatively rarely under normal road conditions. A well-fitting, robust spoke nipple spanner or key is indispensable as the threads do tend to oixidise, rendering 'tweaking' difficult. An old wheel will often have spokes that need to be cut away for this reason. </p><p></p><p>So, I'm afraid you have to remove the rubber, slacken off the spokes, exposing the threads, rinse off the anti-seize and true the wheels back up. That done, you shouldn't have anymore problems. It's a bore, but having a wheel collapse on you at 80 or 90 mph on the motorway is also a bit of a bore. </p><p></p><p>Get a square metre of marine ply and some little blocks of wood of various thicknesses, lay a wheel on it, resting on its bare brake drum, and place said blocks under the rim at three or four points, until they just support the rim with the brake drum on the base. Fix the rim blocks in place. You now have a rudimentary jig for maintaining the correct offset, if any. </p><p></p><p>As Vincent wheels are - theoretically - interchangeable front and rear, there is no difference. Use this jig when tightening all your spokes back up again and you will have a sound starting point for final truing up of the rim, spinning on its axle and bearings with a pointer against the rim, when retensioning the spokes. </p><p></p><p>Hope this helps,</p><p></p><p>PK</p></blockquote><p></p>
[QUOTE="Prosper Keating, post: 8564, member: 1376"] A dab of light oil or grease is alright on spoke threads but if the spoke threads and the nipple threads are well-formed, you should be able to dispense with lubrication, especially if different metals are involved. I would say that "Coppereaze" or any similar copper-based anti-seize compound, being very slippery stuff, would impede or prevent the threads from maintaining a torque figure, especially under the stresses in question, thereby allowing them to slacken off quite quickly in use. This may be the cause of your problem. Once set up, spoked wheels should only need tuning up comparatively rarely under normal road conditions. A well-fitting, robust spoke nipple spanner or key is indispensable as the threads do tend to oixidise, rendering 'tweaking' difficult. An old wheel will often have spokes that need to be cut away for this reason. So, I'm afraid you have to remove the rubber, slacken off the spokes, exposing the threads, rinse off the anti-seize and true the wheels back up. That done, you shouldn't have anymore problems. It's a bore, but having a wheel collapse on you at 80 or 90 mph on the motorway is also a bit of a bore. Get a square metre of marine ply and some little blocks of wood of various thicknesses, lay a wheel on it, resting on its bare brake drum, and place said blocks under the rim at three or four points, until they just support the rim with the brake drum on the base. Fix the rim blocks in place. You now have a rudimentary jig for maintaining the correct offset, if any. As Vincent wheels are - theoretically - interchangeable front and rear, there is no difference. Use this jig when tightening all your spokes back up again and you will have a sound starting point for final truing up of the rim, spinning on its axle and bearings with a pointer against the rim, when retensioning the spokes. Hope this helps, PK [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Spokes Loosening
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