You could just modify the original brake drums by getting a machine shop to turning the outside diameter true and then get an alloy muff turned and bored undersize.
You then heat the muff up and place it on the brake drum. As it cools it contracts onto the brake drum. Done correctly, it will have the grip of death on it and if the brakes ever get hot enough to loosen the muff then you have serious problems with your brakes!
I've done this on my 1936 F2 racer (on Morris 1000 drums), a Douglas 90 Plus motorcycle and a Grand Prix New Imperial (to cure a problem with the spoke tension pulling the front hub out of round)
Arwyn
Last edited by Arwyn Williams; 23/06/17 07:15 PM.
