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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Still Can't Start My Twin, Replaced Mag, But Not A Pop
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<blockquote data-quote="DucATIRadeon" data-source="post: 174148" data-attributes="member: 5456"><p>hi Carl,</p><p>yes correct that's what I'm saying. and yes I mentioned at the bottom of my post that the picture is with ATD full advance and set with crank at max advance.</p><p></p><p>TBH, given the remark from Greg Brillus about less gap with new ATD devices, if the ignition is set as per "the manual", the ignition timing when kicking the bike is 35-20=15degrees. that's a lot.</p><p>so with a new ATD, id set the ignition from 8degrees BTDC and let it be rather than setting it up as per "the manual".</p><p></p><p>about your timing question:</p><p>my very first attempt to start my rapide early this year (I've only got it 'bout a year give/take few months) I noticed the nr1 cylinder was sucking and halfway blowing back. on inspection I found the markings to be 2 teeth out of phase with the large idler but not shifted on the actual camshaft.</p><p>on the other Vincent website (<a href="http://www.thevincent.com" target="_blank">www.thevincent.com</a>) there is a nice picture with an explanation that helped me a lot, and a sentence in the works instructions on the positioning of the first dot relative to the cam.</p><p>ive included a screenshot from my rapide diary (databook coving all since purchase), with added the blue lines on how the cams should be. when you take off the timing chest cover and setting the ignition, give this a go, it doesn't require any measurements but good eyesight.</p><p>take note of the slot in each camwheel: the rear is aligned with the blue line, the front is aligned vertically down (or parallel to the blue vertical line).</p></blockquote><p></p>
[QUOTE="DucATIRadeon, post: 174148, member: 5456"] hi Carl, yes correct that's what I'm saying. and yes I mentioned at the bottom of my post that the picture is with ATD full advance and set with crank at max advance. TBH, given the remark from Greg Brillus about less gap with new ATD devices, if the ignition is set as per "the manual", the ignition timing when kicking the bike is 35-20=15degrees. that's a lot. so with a new ATD, id set the ignition from 8degrees BTDC and let it be rather than setting it up as per "the manual". about your timing question: my very first attempt to start my rapide early this year (I've only got it 'bout a year give/take few months) I noticed the nr1 cylinder was sucking and halfway blowing back. on inspection I found the markings to be 2 teeth out of phase with the large idler but not shifted on the actual camshaft. on the other Vincent website ([URL='http://www.thevincent.com']www.thevincent.com[/URL]) there is a nice picture with an explanation that helped me a lot, and a sentence in the works instructions on the positioning of the first dot relative to the cam. ive included a screenshot from my rapide diary (databook coving all since purchase), with added the blue lines on how the cams should be. when you take off the timing chest cover and setting the ignition, give this a go, it doesn't require any measurements but good eyesight. take note of the slot in each camwheel: the rear is aligned with the blue line, the front is aligned vertically down (or parallel to the blue vertical line). [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Still Can't Start My Twin, Replaced Mag, But Not A Pop
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