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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Breather Timing: A long description of a different way (Part 1)
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<blockquote data-quote="timetraveller" data-source="post: 103779" data-attributes="member: 456"><p>Errr, I think that the opening/closing of the breather valve is a function of both the slot position in the spindle and the opening in the breather tube with the pinion. Rotate one and you have to rotate the other. To me the angular position of the slot in the spindle is more to do with whether one is trying to prevent oil passing into the breather outlet. Given a combination of slot positions in both items then they can be timed to open or close at any required engine rotation value.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 103779, member: 456"] Errr, I think that the opening/closing of the breather valve is a function of both the slot position in the spindle and the opening in the breather tube with the pinion. Rotate one and you have to rotate the other. To me the angular position of the slot in the spindle is more to do with whether one is trying to prevent oil passing into the breather outlet. Given a combination of slot positions in both items then they can be timed to open or close at any required engine rotation value. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Breather Timing: A long description of a different way (Part 1)
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