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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
BTH Magneto pinion
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<blockquote data-quote="davidd" data-source="post: 24085" data-attributes="member: 1177"><p>Ed,</p><p> </p><p>Thanks for the info on availability of the parts from VOC. I am running a Newby belt drive so I can easily mark the engine sprocket using a degree wheel and check it with a strobe. I know that Grosset makes a degree wheel that allows the passage of oil so that you can use a strobe. </p><p> </p><p>It is best when you mount the BT-H that you position the slots so they are most useable to you. I am running a twin plug and moving the magneto 2 degrees at a time I started at 26 degrees and I ran out of "slot" after a few runs, but the bike was still gaining power with each movement. This position turned out to be 19 BTDC degrees, but I had to re index the slots, so I will have to wait for the next session before I can test it further.</p><p> </p><p>Finally, a check with a strobe can also tell you if the advance is working. Mine appears to have lost its ability to retard and is now fixed. It may be that I am just not getting low enough in the revs to check it properly. It is not an issue on this bike, but it would be on a street bike and it is probably worth checking occaisionally.</p><p> </p><p>David</p></blockquote><p></p>
[QUOTE="davidd, post: 24085, member: 1177"] Ed, Thanks for the info on availability of the parts from VOC. I am running a Newby belt drive so I can easily mark the engine sprocket using a degree wheel and check it with a strobe. I know that Grosset makes a degree wheel that allows the passage of oil so that you can use a strobe. It is best when you mount the BT-H that you position the slots so they are most useable to you. I am running a twin plug and moving the magneto 2 degrees at a time I started at 26 degrees and I ran out of "slot" after a few runs, but the bike was still gaining power with each movement. This position turned out to be 19 BTDC degrees, but I had to re index the slots, so I will have to wait for the next session before I can test it further. Finally, a check with a strobe can also tell you if the advance is working. Mine appears to have lost its ability to retard and is now fixed. It may be that I am just not getting low enough in the revs to check it properly. It is not an issue on this bike, but it would be on a street bike and it is probably worth checking occaisionally. David [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
BTH Magneto pinion
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