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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Request for advice - Miller dynamo problems
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<blockquote data-quote="Vic Youel" data-source="post: 4382" data-attributes="member: 87"><p><strong>Crankcase Pressure</strong></p><p></p><p>This is my understanding; I may well be wrong and hope I am corrected.</p><p></p><p>Engine rebuilds normally have a crankcase seal to the chaincase fitted as have both mine. Thus the chaincase should maintain atmospheric pressure and not experience any oil build up. </p><p></p><p>The dynamo oil thrower should keep the oil in and permit the chaincase to breathe when pressure might build up due to temperature differences of air inside and outside.</p><p></p><p>The crankcase with a standard breather should maintain a slight average vaccuum and the oil pump ensures proper scavenge of oil so nothing should exude anywhere....... until the piston rings start to wear.</p><p></p><p>Head down below the parapit now.</p><p></p><p>Vic<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Vic Youel, post: 4382, member: 87"] [b]Crankcase Pressure[/b] This is my understanding; I may well be wrong and hope I am corrected. Engine rebuilds normally have a crankcase seal to the chaincase fitted as have both mine. Thus the chaincase should maintain atmospheric pressure and not experience any oil build up. The dynamo oil thrower should keep the oil in and permit the chaincase to breathe when pressure might build up due to temperature differences of air inside and outside. The crankcase with a standard breather should maintain a slight average vaccuum and the oil pump ensures proper scavenge of oil so nothing should exude anywhere....... until the piston rings start to wear. Head down below the parapit now. Vic:) [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Request for advice - Miller dynamo problems
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