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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Torque Plates and Cylinder Honing
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<blockquote data-quote="Cyborg" data-source="post: 125299" data-attributes="member: 3426"><p>Yes.... an excuse for “extra” cylinder clearance. A subject worth discussion I think. The case can easily distort the liner. Something I’ve though about, but never measured. A while back Vincent made a comment about how easily cylinder liners were distorted with hand pressure. I passed that comment along to Magnetoman who happens to be assembling one of those contraptions from Small Heath. He measured the deflection you could get with hand pressure and it was significant. The discussion was with regards to using torque plates when boring and honing cylinders. His measurements taken after final honing with torque plates still attached and after they were removed indicated that indeed torque plates are a good idea. The BSA cylinder is different in that it has 4 long studs and 4 shorter bolts holding the cylinder head on, but I think the same rule applies to Vincent cylinders.</p></blockquote><p></p>
[QUOTE="Cyborg, post: 125299, member: 3426"] Yes.... an excuse for “extra” cylinder clearance. A subject worth discussion I think. The case can easily distort the liner. Something I’ve though about, but never measured. A while back Vincent made a comment about how easily cylinder liners were distorted with hand pressure. I passed that comment along to Magnetoman who happens to be assembling one of those contraptions from Small Heath. He measured the deflection you could get with hand pressure and it was significant. The discussion was with regards to using torque plates when boring and honing cylinders. His measurements taken after final honing with torque plates still attached and after they were removed indicated that indeed torque plates are a good idea. The BSA cylinder is different in that it has 4 long studs and 4 shorter bolts holding the cylinder head on, but I think the same rule applies to Vincent cylinders. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Torque Plates and Cylinder Honing
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