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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
1954 Comet C - broken cam follower
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<blockquote data-quote="timetraveller" data-source="post: 16264" data-attributes="member: 456"><p>Hi Peter, here are some answers.</p><p>1) If the nuts are in good condition you can use them again. Check that the tab washers are in good condition or replace them.</p><p>2) The cam and the pinion can be regarded as one item and will slide off once you have removed the push rods and lifted the followers up off the cams. If you find that either the cam spindle or the bushes inside the camshaft are worn now is a good time to replace them. </p><p>3) The pinion is a press fit onto the camshaft with 0.015" interference fit.</p><p>4) You need to buy a book by Paul Richardson from the VOC Spares Company which has the diagram in it that you need.</p><p>5) Yes, you do need to remove the large idler.</p><p>6) A lot of us have used a Black Lightening cam shaft on the road for years but it only gives more power above 4,000 rpm and it makes the engine harsher at low revs. You should be able to go faster than 65 mph and you should consider what compression ratio you are using, the size of the carburettor, whether the cam and followers are worn etc. Generally there are lot of small things all wrong and you need to put those right otherwise a hotter cam will not work anyway.</p><p>Good luck</p></blockquote><p></p>
[QUOTE="timetraveller, post: 16264, member: 456"] Hi Peter, here are some answers. 1) If the nuts are in good condition you can use them again. Check that the tab washers are in good condition or replace them. 2) The cam and the pinion can be regarded as one item and will slide off once you have removed the push rods and lifted the followers up off the cams. If you find that either the cam spindle or the bushes inside the camshaft are worn now is a good time to replace them. 3) The pinion is a press fit onto the camshaft with 0.015" interference fit. 4) You need to buy a book by Paul Richardson from the VOC Spares Company which has the diagram in it that you need. 5) Yes, you do need to remove the large idler. 6) A lot of us have used a Black Lightening cam shaft on the road for years but it only gives more power above 4,000 rpm and it makes the engine harsher at low revs. You should be able to go faster than 65 mph and you should consider what compression ratio you are using, the size of the carburettor, whether the cam and followers are worn etc. Generally there are lot of small things all wrong and you need to put those right otherwise a hotter cam will not work anyway. Good luck [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
1954 Comet C - broken cam follower
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