Clutch centre nut removal

[Stephen Foster]

Im struggling removing the above with gearbox in frame , (rear wheel away for rebuild) .
What is the most succesful method please ?

Swinging Arm A10 with 4 spring clutch .

Steve..

[iansoady]

Make a sprag (just a flat piece of 1" x 1/8" or thereabouts) to fit between the clutch chainwheel and engine sprocket so they lock together. Rivet an old plain clutch plate to a friction one so that they lock the 2 parts of the clutch together.

[Goldy]

If the primary chain is still on, wedge a piece of wood between the chain and the clutch chain wheel.

[iansoady]

You need to lock the driven & driving parts of the clutch as well.......

[Goldy]

Yes sorry forgot that I have a pair of old steel and friction plates tack welded together.

[Stephen Foster]

Thanks Everyone ,
I have a special tool coming & hope I can remove it !

Steve..

[t20racerman]

Another alternative is an air tool if you have access to one. An air driven driver works so quickly that it shocks bolts like this off when you just hold the clutch by hand! Not everyone has one, I agree, but it is one the most heavily used special tools in my garage and is brilliant at clutch nuts, primary nuts, sprocket nuts etc and is also especially good at removing the damper rod in Japanese forks by spinning the locking Allen bolt so fast that you don't need the long special tool for stopping the damper tube rotating - of which there are many many different types for different bikes. 

[BSA_54A10]

I do not know what i would do without my rattle gun.
As stated earlier knocks off those impossible nuts in no time flat.
Pops off the clutch centers as well.
Ditto for gear pullers, hitch the rattle gun up to one & they just fall off.

[Stephen Foster]

Managed fine with the special tool Thanks Everyone !!