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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Stripped Splines on Kickstart Shaft and Lever (Weep)
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<blockquote data-quote="Peter Holmes" data-source="post: 164073" data-attributes="member: 302"><p>OK I concede, nothing lasts forever, not even cotter pins, but I purchased my Rapide in 1965 and it is still using the original Kickstart lever, so 57 years so far, and no sign of getting worn out yet, kick start spline sheering is not a regular topic of conversation on this Forum, so I would assume that I am not alone in finding the standard set up to be highly successful and reliable. Your solution is taken from the older cycle world, but no longer used there, apart from on the very cheapest cycles, we referred to them as cotter pins, and the nuts that held the cotter pin tight to the bottom bracket shaft needed to be checked and tightened frequently else they loosened and mangled the cotter pins and the pedal cranks came loose, in my opinion a ghastly solution to a problem that does not exist. It is of course essential that the male and female splines are a very close fit when the pinch bolt is loose, ideally requiring a firm push to engage the two, once that is achieved, and the pinch bolt tightened, the set up will last a very long time, for me 57 years and counting.</p><p>But if your starting point is a worn spline on both components, then no amount of tightening the pinch bolt will solve the problem.</p></blockquote><p></p>
[QUOTE="Peter Holmes, post: 164073, member: 302"] OK I concede, nothing lasts forever, not even cotter pins, but I purchased my Rapide in 1965 and it is still using the original Kickstart lever, so 57 years so far, and no sign of getting worn out yet, kick start spline sheering is not a regular topic of conversation on this Forum, so I would assume that I am not alone in finding the standard set up to be highly successful and reliable. Your solution is taken from the older cycle world, but no longer used there, apart from on the very cheapest cycles, we referred to them as cotter pins, and the nuts that held the cotter pin tight to the bottom bracket shaft needed to be checked and tightened frequently else they loosened and mangled the cotter pins and the pedal cranks came loose, in my opinion a ghastly solution to a problem that does not exist. It is of course essential that the male and female splines are a very close fit when the pinch bolt is loose, ideally requiring a firm push to engage the two, once that is achieved, and the pinch bolt tightened, the set up will last a very long time, for me 57 years and counting. But if your starting point is a worn spline on both components, then no amount of tightening the pinch bolt will solve the problem. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Stripped Splines on Kickstart Shaft and Lever (Weep)
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