brushless motors

In general, we will use brushless motors more than brushed motor. It is because brushless motor have much higher power to weight ratio.

There are some advantages of Brushless Motors:

l No brushes or commentator wear out

l Don't have to worry about cleaning the brushes or commutator.

l There's no Friction from brushes to slow the motor down.

l Longer flight times and extended battery life due to the absence of friction from brushes.

l Much higher power to weight ratio!

How brushless motors work

Brushless RC motors work on the same principle as brushed motors, except the electromagnets(poles) are stationary and the permanent magnets are on the spinning portion of the motor.

Since the electromagnets are stationary, there is no need for brushes! The electronic speed controller(ESC) takes care of switching the voltage of the electromagnets.

It's important to know that a brushless speed controller and a brushed speed controller can not be used interchangeably. They perform completely different tasks.

The quickest way to tell the difference between a canned motor and a brushless motor is to count the number of wire leads. All brushless RC motors have 3 wires. Canned motors have 2 wires. The third wire is used for feedback. Switching any two of these wires will change the rotation of the motor.

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