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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft design
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<blockquote data-quote="timetraveller" data-source="post: 90186" data-attributes="member: 456"><p>There was a special Picador cam. Some Picador engines used Mk II cams and others had the specials which have to be used with radiused followers. My understanding, and clearly you have more experience with this than I have, is that the combination of a flat lever cam follower and any practical cam cannot give a correct lift/acceleration curve. I had convinced myself that it was impossible but earlier you showed that it is possible in principle but, if I understood correctly, not in practice. The Picador engines were reputed to have been designed to run at 6,000 rpm continuously and at the time someone was bright enough to realise that a better cam design could be made for that.</p><p>I have never heard of, and cannot imagine why, anyone would want to run a flat follower cam on one valve and a radiused follower cam on the other.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 90186, member: 456"] There was a special Picador cam. Some Picador engines used Mk II cams and others had the specials which have to be used with radiused followers. My understanding, and clearly you have more experience with this than I have, is that the combination of a flat lever cam follower and any practical cam cannot give a correct lift/acceleration curve. I had convinced myself that it was impossible but earlier you showed that it is possible in principle but, if I understood correctly, not in practice. The Picador engines were reputed to have been designed to run at 6,000 rpm continuously and at the time someone was bright enough to realise that a better cam design could be made for that. I have never heard of, and cannot imagine why, anyone would want to run a flat follower cam on one valve and a radiused follower cam on the other. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft design
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