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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: 91097" data-attributes="member: 1493"><p>I think you are quite right with symmetrical curves. The critical points are the quieting ramps that did not come until the sixties. So that is one of the reasons why the Vincents sound a bit like a can of screws. I have added curves from "The Apfelbeck", my bible. Curves no. 7 are my test cam for the Horex, upper types. The lowest curve is standard Horex, too little quieting ramps there, I added them by grinding the base circle a bit smaller, helped with our 30ies Guzzi a lot.</p><p> So I believe bouncing can be controlled by decent quieting ramps as used for long times. The curve below is a proper racing type, nevertheless real quieting ramps are essential.</p><p></p><p> Vic</p><p>[ATTACH=full]19606[/ATTACH][ATTACH=full]19607[/ATTACH]</p></blockquote><p></p>
[QUOTE="oexing, post: 91097, member: 1493"] I think you are quite right with symmetrical curves. The critical points are the quieting ramps that did not come until the sixties. So that is one of the reasons why the Vincents sound a bit like a can of screws. I have added curves from "The Apfelbeck", my bible. Curves no. 7 are my test cam for the Horex, upper types. The lowest curve is standard Horex, too little quieting ramps there, I added them by grinding the base circle a bit smaller, helped with our 30ies Guzzi a lot. So I believe bouncing can be controlled by decent quieting ramps as used for long times. The curve below is a proper racing type, nevertheless real quieting ramps are essential. Vic [ATTACH=full]19606[/ATTACH][ATTACH=full]19607[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft design
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