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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Series 'C' Comet Idle Hanging Up
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<blockquote data-quote="Robert Watson" data-source="post: 122566" data-attributes="member: 38"><p>I have changed them in situ, and as suggested thread a small bit of string through the spring just in case. It has been a while but I think I used a small pair of needle nosed pliers to do the job, but ---- It could be other things. </p><p></p><p>I had a a mag that acted like this and the back side of the ATD was rubbing on the end of the magneto, and on another a new fibre gear was about .030 oversize and when engaged with the breather pinion was putting a large side load on the magneto. I checked the gear with thread wires and the pitch dia was good. I first spotted the real issue when I noticed that the face of the tips of the teeth were quite shiny. I chucked it in the lathe and took about .040 off the diameter and all was well.</p></blockquote><p></p>
[QUOTE="Robert Watson, post: 122566, member: 38"] I have changed them in situ, and as suggested thread a small bit of string through the spring just in case. It has been a while but I think I used a small pair of needle nosed pliers to do the job, but ---- It could be other things. I had a a mag that acted like this and the back side of the ATD was rubbing on the end of the magneto, and on another a new fibre gear was about .030 oversize and when engaged with the breather pinion was putting a large side load on the magneto. I checked the gear with thread wires and the pitch dia was good. I first spotted the real issue when I noticed that the face of the tips of the teeth were quite shiny. I chucked it in the lathe and took about .040 off the diameter and all was well. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Series 'C' Comet Idle Hanging Up
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