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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Snatchy clutch or Kangaroo petrol?
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<blockquote data-quote="BigEd" data-source="post: 55344" data-attributes="member: 161"><p>I think I read somewhere (so it may not be correct) that the clutch was originally designed to use just three springs. This proved to be so light that there wasn't enough feel to it. If this was the case a stiff or poorly routed cable would have also hindered the handle bar lever moving back to the released position.</p><p>Greg has mentioned above many good things to check. </p><p>A few other things to look:</p><p>Check the travel of the lever inside the gear cover. Make sure that the cable is adjusted so that the G91 lever doesn't quite reach the G50 plate when you pull the handlebar lever to the bar. You will then get the maximum lift available. </p><p>When you have the primary clutch plates off put finger pressure on the end of the pushrod while operating the handlebar lever. It should move in and out smoothly and very easily.</p><p>Try just three springs and that will soon tell you if the heaviness is related to too much spring pressure. The primary clutch is supposed to be able to transmit a certain amount of power on its own. ( I once rode back 100 + miles from a trip to Wales on the primary clutch when a failed oil seal let oil onto the brake shoes. Gentle use of the throttle allowed 50 mph speeds.)</p></blockquote><p></p>
[QUOTE="BigEd, post: 55344, member: 161"] I think I read somewhere (so it may not be correct) that the clutch was originally designed to use just three springs. This proved to be so light that there wasn't enough feel to it. If this was the case a stiff or poorly routed cable would have also hindered the handle bar lever moving back to the released position. Greg has mentioned above many good things to check. A few other things to look: Check the travel of the lever inside the gear cover. Make sure that the cable is adjusted so that the G91 lever doesn't quite reach the G50 plate when you pull the handlebar lever to the bar. You will then get the maximum lift available. When you have the primary clutch plates off put finger pressure on the end of the pushrod while operating the handlebar lever. It should move in and out smoothly and very easily. Try just three springs and that will soon tell you if the heaviness is related to too much spring pressure. The primary clutch is supposed to be able to transmit a certain amount of power on its own. ( I once rode back 100 + miles from a trip to Wales on the primary clutch when a failed oil seal let oil onto the brake shoes. Gentle use of the throttle allowed 50 mph speeds.) [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Snatchy clutch or Kangaroo petrol?
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