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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Valve Timing
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<blockquote data-quote="nkt267" data-source="post: 23571" data-attributes="member: 245"><p>You can turn the engine over forever before the marks re-align and new idlers do not neccessarily have any marks. A quick dodge is to forget the marks for now. Degrease the idlers, cam and half time pinion(mainshaft pinion), and mark with small paint marks all the points where the gears touch not forgetting the 2 marks needed for the halftime pinion( 1 for the key and one for the large idler engagement) and take a photo of the lot.</p><p>When you have fitted your new spindle refit your old parts(before you fit the top end) and check the alignment, if you are happy with the setup lock the cam and mainshaft, remove the large idler and fit the new one. </p><p>The other option is to re-do the timing as per Richardsons and mark the pinions with and engraving tool afterwards. John</p></blockquote><p></p>
[QUOTE="nkt267, post: 23571, member: 245"] You can turn the engine over forever before the marks re-align and new idlers do not neccessarily have any marks. A quick dodge is to forget the marks for now. Degrease the idlers, cam and half time pinion(mainshaft pinion), and mark with small paint marks all the points where the gears touch not forgetting the 2 marks needed for the halftime pinion( 1 for the key and one for the large idler engagement) and take a photo of the lot. When you have fitted your new spindle refit your old parts(before you fit the top end) and check the alignment, if you are happy with the setup lock the cam and mainshaft, remove the large idler and fit the new one. The other option is to re-do the timing as per Richardsons and mark the pinions with and engraving tool afterwards. John [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Valve Timing
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