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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Optimum Kickstart Ignition Advance
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<blockquote data-quote="Oldhaven" data-source="post: 106401" data-attributes="member: 2879"><p>I read varying opinions on the necessity for multi spark for relatively mildly tuned engines. I do think my exhaust note is a bit crisper and I have a very nice idle with the three sparks. I have heard that from the other users too, and Bill Norton uses one of these on his Comet engined car and likes it a lot. It would be interesting to try both, and would be quite simple to do with the programming software. it can be changed in a matter of minutes while on the bike. If I do use a AFR meter, the change could probably be detected. Here is a graph I just did of single spark and adjusting the initial sparks down to 5* BTDC. ( I can't do that with 3 sparks because there has to be 5* between the spark events so the coil can recover)</p><p></p><p>[ATTACH=full]26743[/ATTACH]</p></blockquote><p></p>
[QUOTE="Oldhaven, post: 106401, member: 2879"] I read varying opinions on the necessity for multi spark for relatively mildly tuned engines. I do think my exhaust note is a bit crisper and I have a very nice idle with the three sparks. I have heard that from the other users too, and Bill Norton uses one of these on his Comet engined car and likes it a lot. It would be interesting to try both, and would be quite simple to do with the programming software. it can be changed in a matter of minutes while on the bike. If I do use a AFR meter, the change could probably be detected. Here is a graph I just did of single spark and adjusting the initial sparks down to 5* BTDC. ( I can't do that with 3 sparks because there has to be 5* between the spark events so the coil can recover) [ATTACH type="full"]26743[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Optimum Kickstart Ignition Advance
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