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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Issues with multi plate clutches
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<blockquote data-quote="greg brillus" data-source="post: 45873" data-attributes="member: 597"><p>Interesting pionts so far guys but I think you have missed my initial point.....lets look at this from another example... A couple of months ago I did some work on a 47 Rapide with again another muliplate clutch, also a V3 from memory....anyway the initial complaint was very poor gearshifting, especially down shifting. The gearshift mechanism is crook and bla, bla, bla......went through the whole exersise and found very little wrong with the shift mechanism ( no surprizes so far) I then test rode the bike, and found the shifting really bad, and almost impossible to down shift.....Ah huh.....must be the clutch....upon inspection it had not enough travel, so i removed the excessive end float due to incorrect fitment, and changed the handlebar lever for one with 1 1/8 pivot points. Test ride again, and much better, almost acceptable, but still not 100% right non the less. So i put the bike on it's rear stand, with clutch cover off, and spun the back wheel in top gear with the clutch lever squeezed fully in.......whilst looking at the clutch spinning, the whole assembly was wobbling around like a swash plate....probably about 1 to 2 mm at the outer edge of the basket.....long story, short....the G3 Mainshaft was bent, causing the center hub to wobble around.....no wonder the clutch was dragging, how could it not............Now...if the outer basket does the same thing due to sloppy bushes and so on, and remember what i said about the new clutches having very tight tolerances from the plates to the hub/ outer basket.......Then whats the difference...???? Is this condition any worse than running with buckled plates. I am convinced that if the center hub and the outer basket are running true with minimal "Wobble" then a multiplate would work just fine......Anyone come to "Grips" with this.....Ha, ha..........Greg.</p></blockquote><p></p>
[QUOTE="greg brillus, post: 45873, member: 597"] Interesting pionts so far guys but I think you have missed my initial point.....lets look at this from another example... A couple of months ago I did some work on a 47 Rapide with again another muliplate clutch, also a V3 from memory....anyway the initial complaint was very poor gearshifting, especially down shifting. The gearshift mechanism is crook and bla, bla, bla......went through the whole exersise and found very little wrong with the shift mechanism ( no surprizes so far) I then test rode the bike, and found the shifting really bad, and almost impossible to down shift.....Ah huh.....must be the clutch....upon inspection it had not enough travel, so i removed the excessive end float due to incorrect fitment, and changed the handlebar lever for one with 1 1/8 pivot points. Test ride again, and much better, almost acceptable, but still not 100% right non the less. So i put the bike on it's rear stand, with clutch cover off, and spun the back wheel in top gear with the clutch lever squeezed fully in.......whilst looking at the clutch spinning, the whole assembly was wobbling around like a swash plate....probably about 1 to 2 mm at the outer edge of the basket.....long story, short....the G3 Mainshaft was bent, causing the center hub to wobble around.....no wonder the clutch was dragging, how could it not............Now...if the outer basket does the same thing due to sloppy bushes and so on, and remember what i said about the new clutches having very tight tolerances from the plates to the hub/ outer basket.......Then whats the difference...???? Is this condition any worse than running with buckled plates. I am convinced that if the center hub and the outer basket are running true with minimal "Wobble" then a multiplate would work just fine......Anyone come to "Grips" with this.....Ha, ha..........Greg. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Issues with multi plate clutches
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