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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
mounting a degree wheel using a long soft metal mandrel
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<blockquote data-quote="Martyn Goodwin" data-source="post: 37497" data-attributes="member: 2433"><p>I printed (yes printed) a timing disk that I downloaded from the net - use google - and made sure it was EXACTLY the same size as a CD disk.</p><p></p><p>I then stuck the trimmed printout onto the CD and on the back of the CD glued a wooden disk with a 1/4" central hole. One the glue had set I thenn gave the lot a couple of generous coats of clear varnish.</p><p></p><p>Here is the kicker - I then used a bamboo chopstick (which has a very gentle taper) inserted through the central 1/4" hole uin the centre of my constructed timing disk. I removed the oil quill from the crankshaft, timing side of the motor, and then inserted the chopstick complete with timing disk till it was just snug enough to ensure all rotated with the motor. I fabricated an indicator rod from a small right angled bracket and a length of maleable wire that, when checking timing, I secure UNDER the cylinder oil jet nut - OP40.</p><p></p><p>The great thing about all of this is once you have figured out - thru trial and error - the reguired length of the chop stick the whole arrangement knocks down into something you can easily carry. </p><p></p><p>Martyn</p></blockquote><p></p>
[QUOTE="Martyn Goodwin, post: 37497, member: 2433"] I printed (yes printed) a timing disk that I downloaded from the net - use google - and made sure it was EXACTLY the same size as a CD disk. I then stuck the trimmed printout onto the CD and on the back of the CD glued a wooden disk with a 1/4" central hole. One the glue had set I thenn gave the lot a couple of generous coats of clear varnish. Here is the kicker - I then used a bamboo chopstick (which has a very gentle taper) inserted through the central 1/4" hole uin the centre of my constructed timing disk. I removed the oil quill from the crankshaft, timing side of the motor, and then inserted the chopstick complete with timing disk till it was just snug enough to ensure all rotated with the motor. I fabricated an indicator rod from a small right angled bracket and a length of maleable wire that, when checking timing, I secure UNDER the cylinder oil jet nut - OP40. The great thing about all of this is once you have figured out - thru trial and error - the reguired length of the chop stick the whole arrangement knocks down into something you can easily carry. Martyn [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
mounting a degree wheel using a long soft metal mandrel
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