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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big End Replacement
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<blockquote data-quote="Viny4" data-source="post: 87237" data-attributes="member: 466"><p>I'm safe to say that I mentored John on Flywheel rebuilding. The the lap John is using is patterned from a Harley lap. In time past, you could buy oversized rollers and lap to fit for your Harley. The expanding sleeve on the Harley lap is too small, so you need to make an over sized one. I don't know if they are still available. The rod hole should be resize,oversized rod bearings ground to fit with .0025 inference,and pressed in square and central. The rod end sandwiched between to plates [for no distortion] and ground to -.0005 of finish size, then lapped to size using 280 grit lapping past. I have used finer paste but felt the life of the big end was shorter. Note- Most high precision roller bearings are lapped. If someone can tell me how to post a picture of one ,I will.</p></blockquote><p></p>
[QUOTE="Viny4, post: 87237, member: 466"] I'm safe to say that I mentored John on Flywheel rebuilding. The the lap John is using is patterned from a Harley lap. In time past, you could buy oversized rollers and lap to fit for your Harley. The expanding sleeve on the Harley lap is too small, so you need to make an over sized one. I don't know if they are still available. The rod hole should be resize,oversized rod bearings ground to fit with .0025 inference,and pressed in square and central. The rod end sandwiched between to plates [for no distortion] and ground to -.0005 of finish size, then lapped to size using 280 grit lapping past. I have used finer paste but felt the life of the big end was shorter. Note- Most high precision roller bearings are lapped. If someone can tell me how to post a picture of one ,I will. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Big End Replacement
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