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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Snatchy clutch or Kangaroo petrol?
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<blockquote data-quote="greg brillus" data-source="post: 55361" data-attributes="member: 597"><p>John if you are trying to see if you can feel the point where the pilot clutch engages the shoes on the drum you may be waiting a long time.....!! How have you set up the cable....? If your clutch lever at the handlebars is standard, that is that the pivot points are 7/8 of an inch apart, you should have quite a lot of freeplay at the lever, say a quarter of an inch. If you have very little, you will find the clutch engaging too late when your fingers are outstretched the most, and the take up point on the clutch will be savage because you have lost control at the right point. Remember that you are only lifting one plate, and when all is set up right, it takes very little movement to actuate the clutch. The plungers should take a good strong push with your thumb to compress, and one will be weaker than the other. It is also important to Loctite the grubscrews in place with some medium strength blue 243 Loctite when done, or else they can come undone by themselves. This I do by putting some on the threads once I am happy with the adjustment, then back the screw out two turns, so it picks up on the Loctite, then wind in the two previous turns, so it is back where it was, then wipe out the excess with a rag and small screw driver down each hole. Do not use red high strength Loctite or else you will never move them in future. Look carefully at the picture Bill posted earlier, and it shows how much travel each plunger should have, you can set this up first without the springs, by moving the plunger in and out whilst adjusting the grubscrew, then count the number of turns to remove the screw and refit the springs, and so on. The amount of travel actually dictates how much tension is on the springs, the springs should not become coilbound to limit travel, and over compressing the springs actually damages them......Keep at it, and you will have a great clutch, all the best.......Greg.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 55361, member: 597"] John if you are trying to see if you can feel the point where the pilot clutch engages the shoes on the drum you may be waiting a long time.....!! How have you set up the cable....? If your clutch lever at the handlebars is standard, that is that the pivot points are 7/8 of an inch apart, you should have quite a lot of freeplay at the lever, say a quarter of an inch. If you have very little, you will find the clutch engaging too late when your fingers are outstretched the most, and the take up point on the clutch will be savage because you have lost control at the right point. Remember that you are only lifting one plate, and when all is set up right, it takes very little movement to actuate the clutch. The plungers should take a good strong push with your thumb to compress, and one will be weaker than the other. It is also important to Loctite the grubscrews in place with some medium strength blue 243 Loctite when done, or else they can come undone by themselves. This I do by putting some on the threads once I am happy with the adjustment, then back the screw out two turns, so it picks up on the Loctite, then wind in the two previous turns, so it is back where it was, then wipe out the excess with a rag and small screw driver down each hole. Do not use red high strength Loctite or else you will never move them in future. Look carefully at the picture Bill posted earlier, and it shows how much travel each plunger should have, you can set this up first without the springs, by moving the plunger in and out whilst adjusting the grubscrew, then count the number of turns to remove the screw and refit the springs, and so on. The amount of travel actually dictates how much tension is on the springs, the springs should not become coilbound to limit travel, and over compressing the springs actually damages them......Keep at it, and you will have a great clutch, all the best.......Greg. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Snatchy clutch or Kangaroo petrol?
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