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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Drive Sprocket Failure
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<blockquote data-quote="Martyn Goodwin" data-source="post: 49928" data-attributes="member: 2433"><p>It was a brand new sprocket, purchased 18 months back (yes, I DO use my Comet!) from the VOC spares Company. There was a lock washer in place and nut and lock washer were secured. After I removed the clutch basket I was able to observe the nut and sprocket rotating independent of each other! </p><p></p><p>FWIW at the same time I installed the (failed) sprocket I installed a new driven sprocket (49 teeth) on the rear wheel and a new final drive chain into the bargain. I have 2 final drive chains and swap them around every 1,000 miles covered. there is no discernible wear on the teeth of either the original drive or driven sprockets.</p><p></p><p>I now have another new sprocket in place and will be road testing tomorrow - Feb 13.</p><p></p><p>I cannot think of a method of examination to check for drive sprocket spline wear that does not involve removal of the clutch, ESA and inner case. Any ideas??</p><p></p><p>Martyn</p></blockquote><p></p>
[QUOTE="Martyn Goodwin, post: 49928, member: 2433"] It was a brand new sprocket, purchased 18 months back (yes, I DO use my Comet!) from the VOC spares Company. There was a lock washer in place and nut and lock washer were secured. After I removed the clutch basket I was able to observe the nut and sprocket rotating independent of each other! FWIW at the same time I installed the (failed) sprocket I installed a new driven sprocket (49 teeth) on the rear wheel and a new final drive chain into the bargain. I have 2 final drive chains and swap them around every 1,000 miles covered. there is no discernible wear on the teeth of either the original drive or driven sprockets. I now have another new sprocket in place and will be road testing tomorrow - Feb 13. I cannot think of a method of examination to check for drive sprocket spline wear that does not involve removal of the clutch, ESA and inner case. Any ideas?? Martyn [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Drive Sprocket Failure
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