Chainsaw Repair

In my observations of model airplanes, the brushless motors are noticeably superior to the old type.

At first the prices were outrageous for brushless model motors but along come the Chinese and the prices became very affordable.

We changed machinery over to servo drives that are somewhat like the brushless in the way they operate in the late 80's at work. Before that there were stepping motors and before that were Selsyn motors for synchronization between machines.

Early on we experienced some problems with motors that were spec'd out with not enough torque. They would stall out but sound like they were running. The proper electrical pulses were being sent to the motor so it sounded as though it was turning but wasn't.

In model airplanes the more powerful engines sound a lot like piston engines but you are hearing precession of the prop blades and the power impulses of the poles of the motor.