Not knowing much at all about MAR's I wanted to show what this particular job entailed.
I am certain that it may not be of any help to all, but maybe someone will benefit from
this small task.

As received said sprocket had 4 holes @ .404 & a bore to match wheel, that said I was
wondering if in fact the later MAR's used shoulder bolts to attach said sprocket??

Anyway set up on mill & carefully bored to .591 (15mm locating lugs), alls well now.

Thank you

Larry

Edited August 5, 201511 yr by lbhbul

That's a great idea, I see the reason behind it with the shoulder bolts!