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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="b'knighted" data-source="post: 37575" data-attributes="member: 59"><p>Hi Sid,</p><p></p><p>The standard tapered pushrod easily inserts into the right mainshaft after removal of the bigend quill. Its taper prevents it from going in too far. My timing disc is screwed to a block of stiff rubber or soft plastic which simply pushes onto the outer end. I use a piston stop to hold the piston about half way up on the compression stroke. Zero the timing disc and reverse the engine to the same stop. Halve the reading on the disc and reset the disc so that the half reading is set to the pointer. Rotate to Zero for BDC. Remove piston stop and rotate to firing position, or rotate 180 degrees to TDC. I would then reset my piston stop to hold the piston in the fully advanced position. The disc and piston stop, made from an old spark plug witha 3/8 stud through it, would easily live in the standard tool tray and the bike generally carried its own pushrods.</p></blockquote><p></p>
[QUOTE="b'knighted, post: 37575, member: 59"] Hi Sid, The standard tapered pushrod easily inserts into the right mainshaft after removal of the bigend quill. Its taper prevents it from going in too far. My timing disc is screwed to a block of stiff rubber or soft plastic which simply pushes onto the outer end. I use a piston stop to hold the piston about half way up on the compression stroke. Zero the timing disc and reverse the engine to the same stop. Halve the reading on the disc and reset the disc so that the half reading is set to the pointer. Rotate to Zero for BDC. Remove piston stop and rotate to firing position, or rotate 180 degrees to TDC. I would then reset my piston stop to hold the piston in the fully advanced position. The disc and piston stop, made from an old spark plug witha 3/8 stud through it, would easily live in the standard tool tray and the bike generally carried its own pushrods. [/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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