Dear Rob,Hi David, where can I find Trevor's front brake demonstrator? Sounds illuminating.
In the Databases > Resources there is some information. It is from MPH 499, page 16. I have inserted a link below:
To Stop Or Not To Stop
Dear Rob,Hi David, where can I find Trevor's front brake demonstrator? Sounds illuminating.
Hi Bob, you almost got the Bert Weisz mod. Try a single 1/4" thick base to press the pivot pins into, drilled at 1" centres. This will accurately locate the shoes while allowing movement to self centre. Cheers, Stu.Here's a mod I've done to my Rapide's brakes (apologies if it's been done before).
It allows centralising, and adjustment of the shoes. To do this slacken the nuts, adjust the shoes if necessary, apply brake and tighten.
The pics are self explanatory. I replaced the fixed pivot pins with ones I turned up. These have threaded extensions that allow plenty of movement in the original holes.
The small pin slides in holes in the new pivot pins thus preventing rotation when the nuts are tightened.
The brass adjuster has rh/lh threads.
.I discussed this with my brake man and he now uses less pressure when clamping the linings to the shoes.................I can see how this could be a universal problem that may affect more than just one bike out there. It is also likely to happen because the shoes are very narrow and are quite weak in design. Any thoughts..................???
Perhaps a good measure of shoe/drum alignment would be to check worn out shoes for excessive wear at one end?