Is it possible to fit an o-ring chain to an A Twin?

[billirwinnz]

Hi Peter
I have to replace the gearbox sprocket anyway so I’ll be able to take a good look at it then. I have samples of several chains. By looking at what I can see of the current 520 chain clearance I think there’s enough for a wider one.
I do know that overall chain width for a given size varies a lot with different suppliers. I forget whose are the narrowest so I’ll have to research it again.

 

[billirwinnz]

Or make the ring up from Toolox 44 at 45HRc just normally workable on a lathe, is it available on the other side of the pond?

 

[billirwinnz]

I don’t know of it. I tried to find a local 5/8x1/4 22T sprocket blank but no luck so I’ve ordered a sprocket from the club.

 

[Robert Watson]

If the spline on the old sprocket is good, this is not too difficult to do...........
.002 interference and pressed on with the 4 tacks each side.
this is a post war but I have done Burman and even some AMC ones for local guys.

 

[billirwinnz]

Who made your blanks and what did they cost?

 

[Robert Watson]

sending you a PM