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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft design
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<blockquote data-quote="oexing" data-source="post: 90874" data-attributes="member: 1493"><p>One good reason for a new cam shape would be a curved follower . That would cure some wear problems at the very pointy cam lobe. And regarding wear, the oil hole just in an area of high load is a very baaad (DT) idea. I will feed maximal oil flow into the cam bore and have welded all oilholes in the flat followers. Folks hope for oil supply from the pushrods down but in real life all oil wedge pressure disappears into these holes so there is most wear right at the holes. Same problem is seen with SR 500 XT 500 ohc which get oil feed into the hardchromed curved contact faces of the followers but nevertheless lot of wear around the holes. Honda does mostly oil supplly into camshaft bores and out by drillings in lobes right before start of valve lift - much better.</p><p></p><p> Vic</p></blockquote><p></p>
[QUOTE="oexing, post: 90874, member: 1493"] One good reason for a new cam shape would be a curved follower . That would cure some wear problems at the very pointy cam lobe. And regarding wear, the oil hole just in an area of high load is a very baaad (DT) idea. I will feed maximal oil flow into the cam bore and have welded all oilholes in the flat followers. Folks hope for oil supply from the pushrods down but in real life all oil wedge pressure disappears into these holes so there is most wear right at the holes. Same problem is seen with SR 500 XT 500 ohc which get oil feed into the hardchromed curved contact faces of the followers but nevertheless lot of wear around the holes. Honda does mostly oil supplly into camshaft bores and out by drillings in lobes right before start of valve lift - much better. Vic [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft design
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