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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Lucas Mag' Earth Brush Holder Thread
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<blockquote data-quote="Kansas Bad Man" data-source="post: 49574" data-attributes="member: 778"><p>Cam rings never wear the same , the grinding of the cam is very hard to hold EXACT measurements. the center of the armature would have to be EXACT which they never are, that is because the armature is supported by bearings where the outer races are supported by insulation paper , it is hard enough to support the outer race in a metallic bore , lit alone a paper one. For the armature bearings to hold a true and EXACT center of the armature in its housing you would to shim them to a zero clearance, which would cause instant failure. The needed clearance to prevent this causes the armature to SAG moving it off center to the outer race bores of the housing. In my experience over 50 years I have never found or been able to build a Vincent mag too Exact 50 degree apart openings of the points.</p></blockquote><p></p>
[QUOTE="Kansas Bad Man, post: 49574, member: 778"] Cam rings never wear the same , the grinding of the cam is very hard to hold EXACT measurements. the center of the armature would have to be EXACT which they never are, that is because the armature is supported by bearings where the outer races are supported by insulation paper , it is hard enough to support the outer race in a metallic bore , lit alone a paper one. For the armature bearings to hold a true and EXACT center of the armature in its housing you would to shim them to a zero clearance, which would cause instant failure. The needed clearance to prevent this causes the armature to SAG moving it off center to the outer race bores of the housing. In my experience over 50 years I have never found or been able to build a Vincent mag too Exact 50 degree apart openings of the points. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Lucas Mag' Earth Brush Holder Thread
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