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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
speedo gearbox
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<blockquote data-quote="Hugo Myatt" data-source="post: 2788" data-attributes="member: 99"><p>I bow to your greater knowlege Paul. This is over 20 years ago but as I remember it the scroll gear (This is probably the wrong technical term but you know what I mean) is champhered at the end in the direction of the thrust when the bike is in forward motion. The other end is not champhered so that when the thrust is in the reverse direction as when wheeling the bike backwards the sharp edges of the teeth dig into the end cap and lock it up solid. At least this is what happened to mine. My garage is at the end of a very steep drive entailing paddling the bike backwards for some distance. The cable would break after the exact same number of wheel turns. It took me a long time and many cables to work it out. I had a slight champher ground on the other end of the scroll and no further problems.</p></blockquote><p></p>
[QUOTE="Hugo Myatt, post: 2788, member: 99"] I bow to your greater knowlege Paul. This is over 20 years ago but as I remember it the scroll gear (This is probably the wrong technical term but you know what I mean) is champhered at the end in the direction of the thrust when the bike is in forward motion. The other end is not champhered so that when the thrust is in the reverse direction as when wheeling the bike backwards the sharp edges of the teeth dig into the end cap and lock it up solid. At least this is what happened to mine. My garage is at the end of a very steep drive entailing paddling the bike backwards for some distance. The cable would break after the exact same number of wheel turns. It took me a long time and many cables to work it out. I had a slight champher ground on the other end of the scroll and no further problems. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
speedo gearbox
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