How to Wrap or Upgrade a Brushless Outrunner Motor

A brushless motor uses a pulsed current that alternates between three wires. This fact about them can make it seem confusing about how to make one. There are a few different ways to wrap a brushless outrunner, but I will show you the easiest and most common way. Once you know how to wrap a brushless motor you can change the performance of your motors to have different outputs such as higher torque, higher RPM, and higher tolerances. You have a few different options when wrapping the coils of wire on the stator. More wraps or turns around each pole gives the motor more torque and a lower kv (rpm per volt). More turns will allow the motor to turn a bigger propeller, and fewer turns will limit the torque so it can turn a small prop at high speed. You can use any guage of wire that will fit the motor and you can wrap multipule wires at once for better performance.

Materials:
Brushless outrunner motor
(small bell style motors as shown are easiest to work with)
pliers
400 grit sandpaper
enamel coated wire

Step 1: Taking apart the motor

Taking apart the motor you want to modify is easy. Start by removing the "C" shaped washer on the back of the motor. Pliers should be able to sqeeze it off. Then pull the outer part of the motor off of the stator (the part that has the coils). Unwind the wire on the motor and be sure to count how many turns are on one of the poles so you know what to change the number to. Some times the wire is glued on, so carefully cut it off.