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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman 4th Gear Selector Meltdown
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<blockquote data-quote="Matty" data-source="post: 112921" data-attributes="member: 1339"><p>I still have my old damaged casing with a modified output bearing area because this had been cracked and welded up in 1957 after a tooth broke off, jammed the box bent the shafts etc.</p><p>In order to fit a standard imperial bearing in 1957, when I was a poor apprentice ( who used a small legacy to buy the bike) a sleeve had been made to act as a conversion for the output bearing.</p><p>This bodge had worked until about 10 years ago, though it always leaked grease onto the output sprocket and chain a bit.</p><p>I found a good casing a few years ago (from clevtrev) and built the parts into it with a dragonfly seal on the output which I had a thin groove machined in to seal the outer and used a sealed bearing.</p><p>This has been very successful for around 6,000 miles now though I had used some shims to optimise the 4th Gear engagement to around 4mm.</p><p>I have done a few other bodges to my old casing to get round the fact that the inner flange is damaged, and think it would work OK as a spare for a while if desperate.</p><p>Matty</p></blockquote><p></p>
[QUOTE="Matty, post: 112921, member: 1339"] I still have my old damaged casing with a modified output bearing area because this had been cracked and welded up in 1957 after a tooth broke off, jammed the box bent the shafts etc. In order to fit a standard imperial bearing in 1957, when I was a poor apprentice ( who used a small legacy to buy the bike) a sleeve had been made to act as a conversion for the output bearing. This bodge had worked until about 10 years ago, though it always leaked grease onto the output sprocket and chain a bit. I found a good casing a few years ago (from clevtrev) and built the parts into it with a dragonfly seal on the output which I had a thin groove machined in to seal the outer and used a sealed bearing. This has been very successful for around 6,000 miles now though I had used some shims to optimise the 4th Gear engagement to around 4mm. I have done a few other bodges to my old casing to get round the fact that the inner flange is damaged, and think it would work OK as a spare for a while if desperate. Matty [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Burman 4th Gear Selector Meltdown
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