Posted in the Ural Motorcycle Forum
#1 Feb 13, 2008
Has anyone tried relining the Ural drum brake shoes with a softer more aggresive linig for better stopping power?
#2 Dec 12, 2008
The OEM Russian brake shoes are fine and will probably last the life of the bike. You may be able to send the shoes to a specialty shop and have new linings rivitted on, but it's really not necessary.
I can lock up all three wheels with my drums. If the limit of braking is the stickiness of tires, putting grabbier brake linings in will not improve stopping power.
The OEM shoes are apt to glaze and that will reduce their stopping power. When you feel the brakes aren't working as well as they should, do the following:
Take each wheel off one-at-a-time. Pop the shoes put of the hub. Clamp the shoes in a vise and with a flat file remove the glaze - takes a couple of minutes. While filing, hold the file crosswise on the shoe - you don't want to bevel the shoe. A bevel will reduce the amount of shoe in contact with the drum and produce less friction.
While you have the brakes apart, this a good time to adjust them. Back off the external adjuster (Each wheel has a different way to adjust the brakes from the outside, so I won't go into detail on this. It's pretty straight forward.)
Each brake as 2 internal adjusting thumb-nuts. Expand the 2 internal adjusters equally. Try putting the wheel with the drum back on the hub. If the wheel goes on real easily, the shoes are probably not expanded enough - turn the thumb nuts a bit more and try again. If the drum won't go over the shoes, you've gone too far - back the thumb nuts off a bit and try again.
When you have the shoes expanded to the point where the drum slips over them and the wheel spins with no brake dragging, but any further expanding of the shoes will cause dragging, you're done with internal adjustment. Bolt up the wheel.
Now, do the external adjustment. Tighten the adjuster to where the brakes drag, then back the adjuster off a bit.
Go for a ride and test. When the brakes get warm, they'll expand and if you've tightened them up too much they'll bind. You may have to loosen things up a bit more. Hopefully you've left enough slack so you can correct the binding by backing off the external adjuster. Maybe, you'll have to remove the wheel and back off the internal adjusters.
I hope this is clear. Don't be afraid to work on these bikes, they're very simple. Good luck.
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