|Wheel work over, is a lot of work. Everyone
when they hear of a Vintage bike for sale, at a
good price, wants to know if it runs and goes,
but I've never heard anyone ask "does it stop?"
Stopping is a safety issue. Not only for you, but
your fellow comptitors. I spoke with Multi time
National PVMX Champion George Marshall
about doing this article and we both agreed,
stopping is more important than going. I know
quite a few of you out there know all this stuff
about restoring wheels to service. This article is
for someone who wants to do the work
themselves but has not worked on wheels
before or in a while.
|The Yamaha AT1MX Replica Project
|1. The first step is removing the wheel and
securing the backing plate in a vise. 2. Fold the
shoes over to release them from the actuator
cam and pivot pin. 3. Once you get the shoes to
fold they should come off easy, watch out for
the springs, they like to jump off, roll and hide
|4. Just look how crusty the pivot is. 5. If the
brake shoes have enough thickness, and you
plan to use them over again, mark the groove
in the arm on the cams splined end by
scratching a line so you can use this line for
reference upon reassembly. 6. Wow, can you
say sticky brake? Corrosion and rust like this
has caused many DNF's and crashes to
unsuspecting Vintage MXers, especially
when buying from someone you don't know
and it's a "RACE READY" bike. 7. We buy
the large off brand scotch brite type pot
scrubers, then cut them into strips and use a
shoeshine motion to clean the parts. 8.
Compare this to picture 6. In 8 you see a
Brake actuator that is going to move
smoothly and return properly.
|9. Corrosion where the actuator passes through
the backing plate has to be delt with as well. 10.
Use a screwdriver to run a strip of pot scrubber as
shown in 10 & 11. Then what I do is hold both
ends of the pot scrubber in my hands and spin the
brake backing plate around and around. 12. Time
to deal with crusty the pivot. Give him the
shoeshine. 13. You see how much, or should I say
how little waterproof greese is on my finger? Don't
use any more than this! The greese will get on the
shoes and you will have to start all over. 14. Now
it's time to use that scratch line to put the arm back
on in the right location on the actuator. 15. Use a
wood rasp to take the glaze off the brake shoes.
Use an arcing motion and try not to make flat spots
or cut too deep.