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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cam Wear
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<blockquote data-quote="timetraveller" data-source="post: 93666" data-attributes="member: 456"><p>Regarding Vibrac's posting, three above; it was not just the 100,000 mile bike but also Ron Vane's record breaking bike and many other Vincents. Ron told me that he had never felt the need for a twin start oil pump. I just like to see the oil getting round quickly. Regarding the cam wear; we all know that Stellite cams and followers do not wear out. Also I understand that those who have the French modification of fitting an extra high pressure pump to squirt oil at the cams also do not wear out their cams. I think that this demonstrates that there are two problems, material and lubrication and there are alternative solutions to both. Regarding the general subject of lubrication there is another problem. Over the years I have helped many people replace their bike's big ends. In every case the problem has been that the annular groove at the end of the crank pin is packed full of black and metallic particles. Carbon and wearing parts at a guess. The original oil filters clearly do not get rid of all this debris in the circulating oil and it centrifuges out to eventually block that oil way. Fitting crank pins which are oversized where they go into the flywheels (and thus do not have that annular groove) and circulating more oil with better filters is my suggestion.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 93666, member: 456"] Regarding Vibrac's posting, three above; it was not just the 100,000 mile bike but also Ron Vane's record breaking bike and many other Vincents. Ron told me that he had never felt the need for a twin start oil pump. I just like to see the oil getting round quickly. Regarding the cam wear; we all know that Stellite cams and followers do not wear out. Also I understand that those who have the French modification of fitting an extra high pressure pump to squirt oil at the cams also do not wear out their cams. I think that this demonstrates that there are two problems, material and lubrication and there are alternative solutions to both. Regarding the general subject of lubrication there is another problem. Over the years I have helped many people replace their bike's big ends. In every case the problem has been that the annular groove at the end of the crank pin is packed full of black and metallic particles. Carbon and wearing parts at a guess. The original oil filters clearly do not get rid of all this debris in the circulating oil and it centrifuges out to eventually block that oil way. Fitting crank pins which are oversized where they go into the flywheels (and thus do not have that annular groove) and circulating more oil with better filters is my suggestion. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cam Wear
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