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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big end journal alignment
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<blockquote data-quote="Howard" data-source="post: 22301" data-attributes="member: 271"><p>Here's another take. </p><p> </p><p>Perhaps the oil holes are not positioned at 3 o'clock (or 9 o'clock viewed from the south) because of oil flow, I can't see that it makes any difference when the oil reaches a rolling element bearing, as long as it reaches it in an adequate supply. I accept the theory about equal distribution (earlier) may have some credibility.</p><p> </p><p>Perhaps they should be positioned where they cause the least weakening of the crankpin. Along the neutral axis at the point of maximum load? Please don't ask me to even guess where that might be on a twin, but I suspect 3 o'clock on a Comet would be about right.</p><p> </p><p>I haven't given this a huge amount of thought, so be kind with your comments.</p><p> </p><p>H</p></blockquote><p></p>
[QUOTE="Howard, post: 22301, member: 271"] Here's another take. Perhaps the oil holes are not positioned at 3 o'clock (or 9 o'clock viewed from the south) because of oil flow, I can't see that it makes any difference when the oil reaches a rolling element bearing, as long as it reaches it in an adequate supply. I accept the theory about equal distribution (earlier) may have some credibility. Perhaps they should be positioned where they cause the least weakening of the crankpin. Along the neutral axis at the point of maximum load? Please don't ask me to even guess where that might be on a twin, but I suspect 3 o'clock on a Comet would be about right. I haven't given this a huge amount of thought, so be kind with your comments. H [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big end journal alignment
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