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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Issues with multi plate clutches
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<blockquote data-quote="ClassicBiker" data-source="post: 45801" data-attributes="member: 1632"><p>I made mine from a Triumph 650/750 donor using kevlar friction plates designed to run wet or dry and new steel plates. The drag I intially experienced was from using a set of steel plates I had laying around. One of our local section members is a retired drive line engineer from GM who specialized in clutches on Corvettes, who upon hearing of my problem with drag pointed out that the amount of lift might not be the issue as once pressure is off if the plate is flat and everything is free it is unlikely to drag. Sure enough the plates I thought were flat were ever so slightly warped and there were minute divets in the hub and basket. At the time I didn't much of it but new steel plates and carefully filing out the divets cured the drag. As for lift to be safe a couple of flat washers between the cable abutment and the G50 and I've got plenty. I agree with Howard that it is probably about half of the donor bike. I did all this as no matter what I did to stop the ingress of oil into the original clutch I failed miserably. New bushes, new seals, what have you. In retrospect I believe wear, where the garter seals contact the shoe carrier and the chain wheel are to blame rather than the seals themselves. Now that little bit of oil leaking in helps rather than hurts. As far as crunching when engageing first goes, it isn't any worse than my '66 Triumph which is running a belt primary and dry clutch. Which is to say if the idle is reasonbly low it is near silent. What I find though is that both the Shadow and '66 Triumph are some what abrupt compared to my '95 Triumph. The Shadow and the '66 seem to engage almost at the end of the travel of their levers whereas the '95 is far more progressive and begins to bite as soon as you start to release the clutch lever.</p><p>If I were to do anything different I would incorporate the Triumph clutch shock absorber rather than rely solely on the Vincent ESA.</p><p>Steven</p></blockquote><p></p>
[QUOTE="ClassicBiker, post: 45801, member: 1632"] I made mine from a Triumph 650/750 donor using kevlar friction plates designed to run wet or dry and new steel plates. The drag I intially experienced was from using a set of steel plates I had laying around. One of our local section members is a retired drive line engineer from GM who specialized in clutches on Corvettes, who upon hearing of my problem with drag pointed out that the amount of lift might not be the issue as once pressure is off if the plate is flat and everything is free it is unlikely to drag. Sure enough the plates I thought were flat were ever so slightly warped and there were minute divets in the hub and basket. At the time I didn't much of it but new steel plates and carefully filing out the divets cured the drag. As for lift to be safe a couple of flat washers between the cable abutment and the G50 and I've got plenty. I agree with Howard that it is probably about half of the donor bike. I did all this as no matter what I did to stop the ingress of oil into the original clutch I failed miserably. New bushes, new seals, what have you. In retrospect I believe wear, where the garter seals contact the shoe carrier and the chain wheel are to blame rather than the seals themselves. Now that little bit of oil leaking in helps rather than hurts. As far as crunching when engageing first goes, it isn't any worse than my '66 Triumph which is running a belt primary and dry clutch. Which is to say if the idle is reasonbly low it is near silent. What I find though is that both the Shadow and '66 Triumph are some what abrupt compared to my '95 Triumph. The Shadow and the '66 seem to engage almost at the end of the travel of their levers whereas the '95 is far more progressive and begins to bite as soon as you start to release the clutch lever. If I were to do anything different I would incorporate the Triumph clutch shock absorber rather than rely solely on the Vincent ESA. Steven [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Issues with multi plate clutches
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