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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Old Coil Ignition Points Identification
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<blockquote data-quote="Nigel Spaxman" data-source="post: 108641" data-attributes="member: 2907"><p>Peter I doubt you can figure out how much difference to the timing .003" of gap would make without knowing the shape of the cam that lifts the points. My guess would be that it the timing difference would be less than 5 degrees.</p><p></p><p>Glen, I had forgotten about the 6 volts and the voltage drop. On most of the other bikes with this system it is 12 volts so maybe there is less voltage drop. I think on the vertical twins the firing points being 360 degrees apart instead of 310 and 410 on the Vincent might help, maybe on those bikes there is never a time when both points are closed at once.</p></blockquote><p></p>
[QUOTE="Nigel Spaxman, post: 108641, member: 2907"] Peter I doubt you can figure out how much difference to the timing .003" of gap would make without knowing the shape of the cam that lifts the points. My guess would be that it the timing difference would be less than 5 degrees. Glen, I had forgotten about the 6 volts and the voltage drop. On most of the other bikes with this system it is 12 volts so maybe there is less voltage drop. I think on the vertical twins the firing points being 360 degrees apart instead of 310 and 410 on the Vincent might help, maybe on those bikes there is never a time when both points are closed at once. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Old Coil Ignition Points Identification
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