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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
1951 Black Shadow Restoration
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<blockquote data-quote="timetraveller" data-source="post: 133771" data-attributes="member: 456"><p>Regarding what measuring device to use to centre the conrods. I use a digital Vernier and press the small end away from the side of the bore from which I am measuring. That way any play in the big end is taken into account.. So, for example, I would push the front conrod to the timing side of the engine and then measure the distance from the left hand side of the conrod to the drive side of the bore in the crankcase. Repeat this for both sides of the front pot and then again for the rear. Take differences between left and right hand side measurements for both front and rear and that will tell you whether the conrods are central and if not how much to move them . Be patient.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 133771, member: 456"] Regarding what measuring device to use to centre the conrods. I use a digital Vernier and press the small end away from the side of the bore from which I am measuring. That way any play in the big end is taken into account.. So, for example, I would push the front conrod to the timing side of the engine and then measure the distance from the left hand side of the conrod to the drive side of the bore in the crankcase. Repeat this for both sides of the front pot and then again for the rear. Take differences between left and right hand side measurements for both front and rear and that will tell you whether the conrods are central and if not how much to move them . Be patient. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
1951 Black Shadow Restoration
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