brushes are the lifeline of the motor and with
use they get worn and burnt. If you don't clean
and change your brushes often your motor will
perform poorly and will have a much lower then
are easy to clean and change, are inexpensive
and can triple (or more) the life of your motor.
Here are you a few tips on brushes, how to clean
them and how to change them.
motor brush is held into the motor by the brush
spring. It is easy to remove the spring by unhooking
it from the tab on the brush hood and then removing
it from the spring post. Be careful that you do
not lose the spring as it can fly off when removed
and you will need to use it again when you are
done cleaning or replacing the brush. Here you
can see that the end brush spring has been removed
from the spring tab. You can just use your finger
to remove the end of the spring from the tab.
brush spring is now removed from the hood and
the brush easily slides out. It is best to completely
remove the brush spring from the motor and put
it in a safe place so you do not lose it.
brushes are attached to the brush hood by two
different methods. On most stock motors, the brush
is equipped with an eyelet and this is held in
place by a brush hood screw. Just remove this
screw and you can completely remove the brush
from the motor.
high performance or team motors, the brushes are
soldered to the brush hood. You will need to use
a soldering iron to remove and replace brushes
that are attached this way. If you are not racing
in competition, you can replace a soldered on
brush with a brush that has an eyelet to make
subsequent brush changes easier and it will make
little or difference in the speed of your motor.
brushes are shorter and show signs of burning
along the edges. If the brush is not blue it can
be cleaned and reused. A brush serrator can be
used to cut the factory serrations back into the
brush. Promatch Racing sells a great brush serration
bit and brush alignment tool. Use can also use
a fiberglass cleaning sticks to clean brushes.
They are inexpensive and do a great job. Just
use the end of the stick on the face of the brush
to clean off the glaze and any deposits. There
will be a "matte" finish on the brush
with the glazing removed. The brush is now ready
to be used again. Reinstall them and get to racing.