Vintage Motorcycle Chains and Sprockets
A simple method of repairing sprockets is to have the original teeth machined off and a matching spocket outer welded or bolted back onto the hub. This works particularly well in the case of aluminium sprockets, for instance TY250A which has a dished sprocket.
UK page specialising in chains for vintage machines.
The Chain Man
A guide to chain sizes commonly used on classic and vintage motorcycles. Chain specifications at Sprockets Unlimited
Regina has a database which covers some of the many thousands of variations of motorcycle chains for classic applications.
Rear Chain & Sprockets 101 at Dan's
Hitchcocks, who have been doing this stuff since the days of De Dion and whose first site was reputedly built by Alan Turing himself, have a page on their (now quite modern) website about chains. Specifically about the Royal Oilfield, their information is applicable to many makes.
If you have a query or information about motorcycle chains and sprockets please contact us