REAR SPROCKET CB360

[Craizeehair]

I have a rear sprocket to put on the bike but the original type with a sprocket ?guard?, if that’s the correct terminology isn’t available. I presume I’m ok to just replace with a new standard JT sprocket, I can’t think why I couldn’t but wanted to check if there was anything I was missing?




Also, any suggestions for getting these little blighters out before I start wrecking stuff?

[Bryanj]

Fine without the guard, never used to transfer them or fit expensive Honda.
As to the bushes, only way i ever found was burn out the rubber then carefully cut through the outer sleeve till it collapses it, smelly, smokey, labourious and mind destroying job

[Craizeehair]

Fine without the guard, never used to transfer them or fit expensive Honda.
As to the bushes, only way i ever found was burn out the rubber then carefully cut through the outer sleeve till it collapses it, smelly, smokey, labourious and mind destroying job

Thanks Bryan, I did think that might be the answer, I may leave them in place unless the more informed think it’s imperative?

[Bryanj]

They look ok to use to me

[Craizeehair]

Thank you.

One more if I may?

Should the studs be a super tight fit in them? My drop in nicely, not excessive play but a tiny bit.

[Bryanj]

Now you are testing my memory! I think they should just slide in, by the time you start all 4 i dont think you have any radial movement

[McCabe-Thiele (Ted)]

A agree with Bryan, similar if not identical to the 400 hub once all four studs are in place it's pretty solid.
I replaced mine as the rubber bushes appeared to have gone rock solid so there was no obvious damping effect.

[Craizeehair]

A agree with Bryan, similar if not identical to the 400 hub once all four studs are in place it's pretty solid.
I replaced mine as the rubber bushes appeared to have gone rock solid so there was no obvious damping effect.

How difficult were they to remove Ted? I took the two suspension bushes out of the swing arm and they were… a challenge.

[McCabe-Thiele (Ted)]

I found them easier than the rear suspension bushes iirc.
I had a drill bit that was just a tad wider than the rubber section. I basically started to drill into the rubber gap trying to keep the drill away from the center bush. The drill cut into the outer part of the bush metal wall making it very thin. I was then able to remove most of the inner rubber section & inner sleeve then using an old small screwdriver shaft I hammered it into where the drill had thinned the wall of the metal outer . I got better at it with each bush only marking one of the holes with my drill bit. I did soak it with penetrating oil beforehand. Sounds a bit Heath Robinson but it worked. Before you ask I can't remember what bit size I used in my cordless drill.

[Craizeehair]

Thank you for that.

[AshimotoK0]

Back in the day, I drilled and tapped the sprocket M6 and re-attached the guard ring with button head hex screws/Loctite then peened over the backs of the threads. If you decide not to use it then bung it on eBay as they are much sought after for 400/4s

[florence]

I would leave them alone, they look fine.  I found they are really difficult and time wasting to remove and they don't do much damping to be honest.
Simpler to try it first and then if it's a genuine problem, revisit.

[Craizeehair]

Thanks for the advice all. I decided to crack on with what I have, only to find the JT sprocket isn’t a perfect fit, so a bit of fettling to make the studs fit.

All now assembled and feels great.