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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
BTH Magneto pinion
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<blockquote data-quote="BigEd" data-source="post: 24090" data-attributes="member: 161"><p>Dear David,</p><p>I couldn't get the Grosset adapter for use with a strobe to function satisfactorily but that may have been down to me as I have met Mr. Grosset and admire his work. I have a "Heath Robinson" (Rube Goldberg?) device that I mount onto the mag pinion window that I can use to strobe a degree disc. It is of course half engine speed so I have to double the reading but does give me the strobe facility.</p><p>Your engine uses a very small advance so I guess that it is set up very well maybe with quite high compression, squish bands, etc.</p><p>The combination of adjustment using the taper and the slots does give you almost infinite adjustment so it will be interesting to see what your final optimum advance figure is.</p><p>Have you ever seen the ignition advance using the BT-H mag? It is possible to specify fixed ignition at the build stage. Is it possible that this is what you have or are you operating above 3000 rpm when the MK1 CDI has finished advancing?</p></blockquote><p></p>
[QUOTE="BigEd, post: 24090, member: 161"] Dear David, I couldn't get the Grosset adapter for use with a strobe to function satisfactorily but that may have been down to me as I have met Mr. Grosset and admire his work. I have a "Heath Robinson" (Rube Goldberg?) device that I mount onto the mag pinion window that I can use to strobe a degree disc. It is of course half engine speed so I have to double the reading but does give me the strobe facility. Your engine uses a very small advance so I guess that it is set up very well maybe with quite high compression, squish bands, etc. The combination of adjustment using the taper and the slots does give you almost infinite adjustment so it will be interesting to see what your final optimum advance figure is. Have you ever seen the ignition advance using the BT-H mag? It is possible to specify fixed ignition at the build stage. Is it possible that this is what you have or are you operating above 3000 rpm when the MK1 CDI has finished advancing? [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
BTH Magneto pinion
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