An RC electric motor is a device that converts electrical energy into mechanical energy. It works by using the interaction between a magnetic field and an electrical current to create rotation. There are two main types of RC electric motors: brushed and brushless.

A brushed motor has a set of fixed magnets and a set of rotating armature windings. The armature windings are connected to a commutator, which is a mechanical switch that periodically reverses the direction of current flow in the armature windings. This creates a rotating magnetic field that interacts with the fixed magnets, causing the armature to rotate.

A brushless motor, on the other hand, has a set of fixed armature windings and a set of rotating magnets. The armature windings are connected to a electronic speed controller (ESC), which controls the flow of current to the armature windings. This creates a rotating magnetic field that interacts with the rotating magnets, causing the rotor to rotate. Brushless motors are more efficient and have a longer life span than brushed motors.

The speed of the motor is controlled by the electronic speed controller (ESC), which regulates the amount of power that the motor receives. The ESC controls the speed of the motor by switching the power on and off very quickly, a process called pulse width modulation (PWM). By varying the width of the pulses, the ESC can control the speed of the motor.

In summary, an RC electric motor is a device that converts electrical energy into mechanical energy by using the interaction between a magnetic field and an electrical current. There are two main types of RC electric motors: brushed and brushless. The speed of the motor is controlled by the electronic speed controller (ESC), which regulates the amount of power that the motor receives. Understanding how the motor works, can help us in selecting the right motor for our RC vehicles and troubleshoot any problem we might have.