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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big End Replacement
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<blockquote data-quote="Chris Launders" data-source="post: 86861" data-attributes="member: 2010"><p>I've not done it between centres but done several on knife edge rollers and try to get below 1 thou at the shaft end, I couldn't do this with my JAP crank as the shafts were such different diameters so I made a frame to support it on it's bearings (the bearings sitting on thin edges) and got it down to under 1 thou at the shaft end 3" outboard.</p><p> What I have found useful is to mark a point 90 degrees from the crankpin on one flywheel with a marker pen as it's easy to get lost where you are when taking it out, hitting it and putting it back several times.</p><p>None have been Vincent cranks yet.</p><p>Chris.</p></blockquote><p></p>
[QUOTE="Chris Launders, post: 86861, member: 2010"] I've not done it between centres but done several on knife edge rollers and try to get below 1 thou at the shaft end, I couldn't do this with my JAP crank as the shafts were such different diameters so I made a frame to support it on it's bearings (the bearings sitting on thin edges) and got it down to under 1 thou at the shaft end 3" outboard. What I have found useful is to mark a point 90 degrees from the crankpin on one flywheel with a marker pen as it's easy to get lost where you are when taking it out, hitting it and putting it back several times. None have been Vincent cranks yet. Chris. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big End Replacement
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