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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft design
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<blockquote data-quote="Deleted member 3831" data-source="post: 91227"><p>Phil, the cams are nothing to do with me, I simply measured them for record purposes when the engine was undergoing a general service. As I mentioned earlier, Phil Joy was said to have ground the profiles, but to what original or master I have no idea, and Phil when I asked him, could not recall where the original cams came from.</p><p></p><p>The data in the file, as far as I can ascertain, is all in order, but here I stand to be corrected because the original file format was not acceptable as an attachment, so I had to save it from Excel in a different format with the warning message that some of the data could be compromised. If you have come across any particular fault I would appreciate having the details to investigate.</p><p></p><p>The BSA cams that were copied by PEI for the Repco Brabham engine are not to my knowledge specified as to which cams in particular, but the regular fitment to the Gold Star engines were 65-1891 for exhaust, and 65-2442 for the intake. so without knowledge to the contrary, I'm assuming these profiles were the ones used.</p><p></p><p>Having the BSA cams for the Repco Brabham project, it seems a little surprising that PEI didn't at some stage consider using the same profiles for his Vincents, and I can only assume he had some good reason for not so doing - or perhaps he did, does anyone know ?</p></blockquote><p></p>
[QUOTE="Deleted member 3831, post: 91227"] Phil, the cams are nothing to do with me, I simply measured them for record purposes when the engine was undergoing a general service. As I mentioned earlier, Phil Joy was said to have ground the profiles, but to what original or master I have no idea, and Phil when I asked him, could not recall where the original cams came from. The data in the file, as far as I can ascertain, is all in order, but here I stand to be corrected because the original file format was not acceptable as an attachment, so I had to save it from Excel in a different format with the warning message that some of the data could be compromised. If you have come across any particular fault I would appreciate having the details to investigate. The BSA cams that were copied by PEI for the Repco Brabham engine are not to my knowledge specified as to which cams in particular, but the regular fitment to the Gold Star engines were 65-1891 for exhaust, and 65-2442 for the intake. so without knowledge to the contrary, I'm assuming these profiles were the ones used. Having the BSA cams for the Repco Brabham project, it seems a little surprising that PEI didn't at some stage consider using the same profiles for his Vincents, and I can only assume he had some good reason for not so doing - or perhaps he did, does anyone know ? [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Camshaft design
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