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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cam Suppliers
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<blockquote data-quote="oexing" data-source="post: 110175" data-attributes="member: 1493"><p>Why would one be so focused on oilite bushes in the camshafts when you have continuous lubrication into them ? I´d take tin bronce (phosphor bronce?) any time instead. For sizing oilite bushes a simple HSS tool should be allright - as long as it is not blunt. And speed is only secondary to sharp cutting tools. </p><p> I believe a good oil supply into the cams is most important and one or two oil holes just before the opening ramps at the end of the base circle . Also I believe the oil hole in the cam followers at its place of max. load is very wrong. All it does is to interrupt the oil wedge that forms on the cam lobe with accelerated wear around the hole. You can check this effect in other bikes like Yam XT or SR 500 with their oil hole in the hard chromed followers . Any oil pressure from the oil pump is nothing compared to pressure within the oil wedge so any hole there is simply wrong. I laser welded all holes in the followers for keeping an undisrupted face for oil wedge forming. Another mod is crowded needle bearings in the camshafts for better oil flow from the oil holes in the base circles. </p><p></p><p> Vic</p></blockquote><p></p>
[QUOTE="oexing, post: 110175, member: 1493"] Why would one be so focused on oilite bushes in the camshafts when you have continuous lubrication into them ? I´d take tin bronce (phosphor bronce?) any time instead. For sizing oilite bushes a simple HSS tool should be allright - as long as it is not blunt. And speed is only secondary to sharp cutting tools. I believe a good oil supply into the cams is most important and one or two oil holes just before the opening ramps at the end of the base circle . Also I believe the oil hole in the cam followers at its place of max. load is very wrong. All it does is to interrupt the oil wedge that forms on the cam lobe with accelerated wear around the hole. You can check this effect in other bikes like Yam XT or SR 500 with their oil hole in the hard chromed followers . Any oil pressure from the oil pump is nothing compared to pressure within the oil wedge so any hole there is simply wrong. I laser welded all holes in the followers for keeping an undisrupted face for oil wedge forming. Another mod is crowded needle bearings in the camshafts for better oil flow from the oil holes in the base circles. Vic [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Cam Suppliers
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