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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet drive side crankcase
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<blockquote data-quote="clevtrev" data-source="post: 25345" data-attributes="member: 187"><p>First thing is ensure the case joint faces are flat, if necessary lap on a plate, applies to each half. </p><p>Get a plate large enough to take the face area, with some for clamping, drill and bore two holes for the dowels, and mill a datum edge. Then put the timing half on with joint face on to the plate, clock in the main bearing. Remove case, drill and bore in the same position a datum reference hole. </p><p>Remove plate, turn over. clamp down, after setting datum edge, clock in the datum hole, put drive side on to plate located with the dowels. That`s it, you`re there.</p><p>Trying to get the whole case in line is near impossible, too many things to add up.</p></blockquote><p></p>
[QUOTE="clevtrev, post: 25345, member: 187"] First thing is ensure the case joint faces are flat, if necessary lap on a plate, applies to each half. Get a plate large enough to take the face area, with some for clamping, drill and bore two holes for the dowels, and mill a datum edge. Then put the timing half on with joint face on to the plate, clock in the main bearing. Remove case, drill and bore in the same position a datum reference hole. Remove plate, turn over. clamp down, after setting datum edge, clock in the datum hole, put drive side on to plate located with the dowels. That`s it, you`re there. Trying to get the whole case in line is near impossible, too many things to add up. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet drive side crankcase
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