FWIW I stripped down the clutch (Burman) on my Comet to try to resolve the mongrel intermittent sticking clutch- crashing gears issue I was plagued with.
Having removed all of the clutch components from the bike - that lock washer in the clutch centre is a Orwellian nightmare - I was able to inspect it with some care.
What I found was that the slots in the clutch drum had developed distinct "valleys" where the fingers of the friction plates bore on it. On the central drum, I found simmilar valleys in the splines that engage with the pressure plates. It is no wonder that these plates were reluctant to move or separate when I attempted to engage the clutch.
With a suitable fine tooth file I have removed the valleys - I guess what I really did was flatten the mountain peaks.
Reassembly of the clutch has been completed but road testing will be a week of so away as I am also working on the global warming oil consumption issue I have and as a consequence, I have the top end of the motor currently spread across my workshop.
Martyn
Having removed all of the clutch components from the bike - that lock washer in the clutch centre is a Orwellian nightmare - I was able to inspect it with some care.
What I found was that the slots in the clutch drum had developed distinct "valleys" where the fingers of the friction plates bore on it. On the central drum, I found simmilar valleys in the splines that engage with the pressure plates. It is no wonder that these plates were reluctant to move or separate when I attempted to engage the clutch.
With a suitable fine tooth file I have removed the valleys - I guess what I really did was flatten the mountain peaks.
Reassembly of the clutch has been completed but road testing will be a week of so away as I am also working on the global warming oil consumption issue I have and as a consequence, I have the top end of the motor currently spread across my workshop.
Martyn