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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman Box Again
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<blockquote data-quote="brian gains" data-source="post: 114839" data-attributes="member: 3153"><p>Still fighting the chattering and lurching I get when I engage 1st gear. </p><p>The internal dogs on 1st do look worn on the leading edge suggesting that the sliding clutch on the layshaft is not positively engaging. The changes I've made that may have affected this are to have a new inner bush made up for the gear selector layshaft, also to ensure prescribed end play on this shaft incorporated a 0.030" gasket where previously there was nothing. AND not dismissing that possibly and not certainly that I may not have aligned the '0' synch' marks and this may have had a damaging effect when trying to engage 1st where previously there was no issue.</p><p>By extrapolation from my measurements it appears that between the face of the layshaft 3rd gear and the flange of the layshaft inner cover bush there is slightly in excess of 0.080" play. Is there a specified tolerance for this anywhere? I'm inclined to reduce this gap to say 0.030" using a shim and therefore having a knock on effect of the abutting 1st gear pinion engaging more positvely with the sliding layshaft clutch. </p><p>Can anyone see an absolute howler in my reasoning?</p></blockquote><p></p>
[QUOTE="brian gains, post: 114839, member: 3153"] Still fighting the chattering and lurching I get when I engage 1st gear. The internal dogs on 1st do look worn on the leading edge suggesting that the sliding clutch on the layshaft is not positively engaging. The changes I've made that may have affected this are to have a new inner bush made up for the gear selector layshaft, also to ensure prescribed end play on this shaft incorporated a 0.030" gasket where previously there was nothing. AND not dismissing that possibly and not certainly that I may not have aligned the '0' synch' marks and this may have had a damaging effect when trying to engage 1st where previously there was no issue. By extrapolation from my measurements it appears that between the face of the layshaft 3rd gear and the flange of the layshaft inner cover bush there is slightly in excess of 0.080" play. Is there a specified tolerance for this anywhere? I'm inclined to reduce this gap to say 0.030" using a shim and therefore having a knock on effect of the abutting 1st gear pinion engaging more positvely with the sliding layshaft clutch. Can anyone see an absolute howler in my reasoning? [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman Box Again
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