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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: 24054" data-attributes="member: 161"><p>David has raised some good points here. The BT-H peg locks the magneto shaft in the firing position when the pinion is pushed onto the taper. With any train of gears/sprockets you will get backlash so this needs to be taken up in the appropriate direction. Checking by a strobe is usually problematic on a Vincent but probably the best way to check your real ignition timing whatever ignition system you use. The new BT-H does have slotted holes so that you can experiment a little with the timing by slacking the fixings a little and rotating the mag. Easier than breaking the taper and starting again.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> With the engine running I rotate the mag till the strobe shows the timing I want.</p><p></p><p>The VOC Spares Company list a magneto pinion kit for the BT-H magneto. That is what I have fitted to my Rapide. The kit doesn't contain the bits to drive a rev-counter if you want to fit one so you need to source those parts separately.</p><p></p><p>u have on fitted so</p></blockquote><p></p>
[QUOTE="BigEd, post: 24054, member: 161"] David has raised some good points here. The BT-H peg locks the magneto shaft in the firing position when the pinion is pushed onto the taper. With any train of gears/sprockets you will get backlash so this needs to be taken up in the appropriate direction. Checking by a strobe is usually problematic on a Vincent but probably the best way to check your real ignition timing whatever ignition system you use. The new BT-H does have slotted holes so that you can experiment a little with the timing by slacking the fixings a little and rotating the mag. Easier than breaking the taper and starting again.:) With the engine running I rotate the mag till the strobe shows the timing I want. The VOC Spares Company list a magneto pinion kit for the BT-H magneto. That is what I have fitted to my Rapide. The kit doesn't contain the bits to drive a rev-counter if you want to fit one so you need to source those parts separately. u have on fitted so [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
BTH Magneto pinion
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