Electric Motor Tuning Guide
Making Your R/C Electric Motor Faster
Update 2009: List of brushless motors approved by IFMAR.
Here are tips to help get the most speed out of your stock or modified motors. Let us start of with getting the most speed out of the stock Mabuchi 540 RS motor.
This "water dipping" method will also break-in the bronze bushings, which will make the armature rotation smoother, giving you more rpms and power. Another method to break-in the bronze bushings is to attach the motor armature to a drill or Dremel tool. Just be sure not to over do it.
Let the motor dry out, and put 1 or 2 drops of lightweight oil on the bushings. Now your motor should be 20% faster than before.
Hot Tip: Serious racers in the stock motor class usually break-in several of these stock motors. They then test for power by using a dynamometer. The best motors are then used for racing. This is the reason why some stock motors seem to be faster than others.
It is easier to get more speed out of modified motors, primarily because you can change the brushes and advance the timing.
With modified motors, you can disassemble the entire motor. You can "true" the commutator to make it as round as possible and remove the carbon deposits left by arcing and the motor brush.
The washers are used to align the armature properly with the magnets and magnetic field inside the motor can. Washers prevent the armature from moving back and forth inside the can, which robs the motor of power. With the proper use of washer, you can gain power and speed advantage over your competition.
Electric Motor Maintenance Guide
RC Electric Motor Tips
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