Bike is ‘58 Dommi 99.
Please can someone advice me what is the correct method for getting 75/70 ft lb torque onto stator and clutch nuts during a renovation!
pics show stage I am at. I have tried assembling clutch and rear brake and had helper sit on, engage top gear and rear brake but cannot get torque on stator nut before clutch slips - putting a lot of stress into the gearbox I imagine.
(I have tried pry bar in engine sprocket - and I now need a new alternator casing)
Thank you!
steve
I mean (alternator) rotor…
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Clutch locking tool
Hi Steve,
Back off before you do any more damage.
What you need is called a clutch locking tool. Available from the likes of RGM or Andover Norton.
Basically a clutch plate with both outer and inner tangs so the clutch is locked solid when inserted. You have to pull your plates off the clutch before using the tool.
An arm is attached to the special plate so you can react the torque applied on the clutch centre nut.
Personally, I find it best to extend the arm so that it rests on top of the pillion footrest for tightening rotor nut and clutch nut. Then to release these nuts rotate the pillion footrest 180 degrees and have the arm captured under the pillion footrest.
Hope this helps.
Peter
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Clutch Holding Tools Pictures
Have you tried screwing the pressure plate spring adjuster nuts up tight to help lock the clutch?
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I did Philip - wouldn’t hold…
I did Philip - wouldn’t hold it! As above - found a tool!
steve
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Peter, Many thanks for that…
Peter,
Many thanks for that - for future reference:
AN - 06.1015 for Commando £15.95
NOC - 067227 for all pre Commando £12.00
Steve
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I would use a lower torque …
I would use a lower torque and nut lock. Old clutch centers will splay and load up on the sleeve gear. Old rotors wont be happy either. I use 40-50 ft lbs. Not had any come loose.
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Sounds like sound advice…
Sounds like sound advice Robert. I think I will invest in the tool and aim for 50ft lb for both rotor and clutch nuts - with loctite.
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I always use...
... a sprag between the teeth of the engine and clutch sprocket for this kind of job. It locks them together with no need for compilcated holders and doesn't damage the chain or sprockets unlike wedging things in there.
Easily made from a bit of scrap alloy, copper, or even mild steel.
As far as the clutch centre goes I use a Commando exhaust nut C spanner - I think there was a mention of this in the current Roadholder.
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With a locking device you…
With a locking device you can go a bit more than 50 on the crank nut with locktite. The clutch is a bit more fragile ,especially with the spider detail that some orriginal bikes have. Replacements are availiable with a proper stop feature , until you compare the inner workings with a torch you won't realise there has been an improvement.
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I mean (alternator) rotor not stator nut of course!