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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
The Clutch on my Comet
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<blockquote data-quote="Gerry Jenkinson" data-source="post: 3758" data-attributes="member: 432"><p>Any suggestions for the opposite problem, slipping.</p><p>The clutch, as it came, to me had cork inserts. Both friction and plain plates were distorted. Corks unevenly swollen.</p><p>I have just replaced all the clutch plates with new plates from the Spares Co.</p><p>I did a 3 mile trial run up and down a local hill with the primary cover off. Great joy! Silent changes, progressive take up and I couldnt make it slip. No oil leaking from the gearbox or mainshaft.</p><p>So I put the primary cover on and added Castrol up to the level plug. Ran it down the hill, stopped to visit a friend. On leaving I couldnt restart as it slipped whilst kicking. </p><p>Tightening the springs gives no improvement.</p><p>Regarding the lifter mechanism. Operating arm etc are properly set up. Correct clearance at the handlebar lever. The plate lift is about 3/16". The pushrod is divided with a 1/2"x1/4" rod. I dressed the splines and drum slots with a stone, though there was no noticable notching.</p><p>Tomorrow I will strip it (again). </p><p>I am quite surprised as its a simple clutch, unlike the twin, much the same as others I have done. </p><p>Is it an oil / friction material issue?</p><p>Gerry Jenkinson</p></blockquote><p></p>
[QUOTE="Gerry Jenkinson, post: 3758, member: 432"] Any suggestions for the opposite problem, slipping. The clutch, as it came, to me had cork inserts. Both friction and plain plates were distorted. Corks unevenly swollen. I have just replaced all the clutch plates with new plates from the Spares Co. I did a 3 mile trial run up and down a local hill with the primary cover off. Great joy! Silent changes, progressive take up and I couldnt make it slip. No oil leaking from the gearbox or mainshaft. So I put the primary cover on and added Castrol up to the level plug. Ran it down the hill, stopped to visit a friend. On leaving I couldnt restart as it slipped whilst kicking. Tightening the springs gives no improvement. Regarding the lifter mechanism. Operating arm etc are properly set up. Correct clearance at the handlebar lever. The plate lift is about 3/16". The pushrod is divided with a 1/2"x1/4" rod. I dressed the splines and drum slots with a stone, though there was no noticable notching. Tomorrow I will strip it (again). I am quite surprised as its a simple clutch, unlike the twin, much the same as others I have done. Is it an oil / friction material issue? Gerry Jenkinson [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
The Clutch on my Comet
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