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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft
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<blockquote data-quote="Deleted member 3831" data-source="post: 105391"><p>Early cam design was very much a hit and miss affair, a shape was drawn up, converted to cam form, and the resultant cam tried out in an engine.</p><p>During the 1920/30's Rudge were quite prominent in competition, and one of their employees Jack Amott, rode a Rudge Ulster in the 1927 and 1928 TT's. Jack was involved in development, and a copy of one of his cam designs is attached, still a very basic way of laying out a design. The Rudge had a finger follower with a 0.53" radius pad.</p><p>Later Jack left Rudge and after WW2 he was working at BSA, where he designed all the cams for the Gold Star engines. When Phil Irving designed the Repco Brabham engine, he chose to use the Amott Gold Star profiles.</p><p></p><p>For comparison a drawing for an Ariel profile of 1952 is also included</p><p></p><p>Niether have any direct connection with Vincent, but should indicate how designers worked before computers, long hand calculations and larger than life drawings.</p></blockquote><p></p>
[QUOTE="Deleted member 3831, post: 105391"] Early cam design was very much a hit and miss affair, a shape was drawn up, converted to cam form, and the resultant cam tried out in an engine. During the 1920/30's Rudge were quite prominent in competition, and one of their employees Jack Amott, rode a Rudge Ulster in the 1927 and 1928 TT's. Jack was involved in development, and a copy of one of his cam designs is attached, still a very basic way of laying out a design. The Rudge had a finger follower with a 0.53" radius pad. Later Jack left Rudge and after WW2 he was working at BSA, where he designed all the cams for the Gold Star engines. When Phil Irving designed the Repco Brabham engine, he chose to use the Amott Gold Star profiles. For comparison a drawing for an Ariel profile of 1952 is also included Niether have any direct connection with Vincent, but should indicate how designers worked before computers, long hand calculations and larger than life drawings. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft
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