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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet timing
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<blockquote data-quote="Cyborg" data-source="post: 178411" data-attributes="member: 3426"><p>I don’t think that would help… when you first turn the ignition on, you need to rotate the engine past TDC, so the ignition knows where it is. Switching the sensor off would be the same as turning the ignition off, so either way I need to kick it past TDC with the decompressor and pray it doesn’t roll backwards. It makes total sense that the engine wants to roll back when on the compression stroke, but it’s a little surprising how easily and how often it does roll back. You’d think it was a 2 stroke. An electric starter would cure everything…long kickstart lever, short leg etc. I would just need to pull the decompressor lever in prior to hitting the starter button so the thing doesn’t explode. Of course…. when I assembled this lump from the contents of 3 sheds, I didn’t plan for the future addition of an electric starter, so it will take some farting around to make one work. It’ll require a ring gear mounted to the Newby clutch and a starter with a bendix. This is all assuming I don’t just shove the thing off a cliff.</p></blockquote><p></p>
[QUOTE="Cyborg, post: 178411, member: 3426"] I don’t think that would help… when you first turn the ignition on, you need to rotate the engine past TDC, so the ignition knows where it is. Switching the sensor off would be the same as turning the ignition off, so either way I need to kick it past TDC with the decompressor and pray it doesn’t roll backwards. It makes total sense that the engine wants to roll back when on the compression stroke, but it’s a little surprising how easily and how often it does roll back. You’d think it was a 2 stroke. An electric starter would cure everything…long kickstart lever, short leg etc. I would just need to pull the decompressor lever in prior to hitting the starter button so the thing doesn’t explode. Of course…. when I assembled this lump from the contents of 3 sheds, I didn’t plan for the future addition of an electric starter, so it will take some farting around to make one work. It’ll require a ring gear mounted to the Newby clutch and a starter with a bendix. This is all assuming I don’t just shove the thing off a cliff. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet timing
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