[brushlessboy16]

What you need to know

Brushed vs Brushless

Brushed motor use brushes to contact segments of the Commutator to energize the coils of wire on the armature. The Electromagnetic field created by the armature repels or attracts (depending on polarity) to the stationary magnets mounted on the motor can, this force causes the motor to spin.
Terminology
-turns, turns of a brushed motor are how many times a strand of copper wire is wrapped around a pole on the armature. A higher turn will give you more torque and lower rpm while a lower turn will provide higher rpm and acceleration but torque will suffer.

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Brushless motors


Brushless motors come in two large categories, Sensored and sensorless. In a brushless motor the insides are flip-flopped compared to that of a brushed motor, the permanent magnets are mounted to the motor shaft or rotor,and the electromagnet coils are mounted to the inside of the motor can. As a signal is received from a vehicle's receiver, the speed control sends power to two of the 3 coils in the brushless motor, these repel the magnets on the rotor and begin to spin the motor. When the permanent magnet in the rotor moves past an un-powered coil of wire it creates voltage that is readable by the Speed Controller called EMF. Since you only get an emf pulse once a revolution, the speed control uses this to determine the position of the rotor and change the polarity of the motors coils to further the rotation of the rotor. (known as switching) the controller switches the coils faster to increase the rotor speed, in turn accelerating the car.

Terminology
-Rotor- equivalent to the armature in a brushed motor, has stationary magnets. Pinion attaches to this.
-Coils- Mounted inside the motor can are electromagnets switched by the speed control.


Sensored Brushless systems

The other main category of brushless systems is the Sensored Motor/esc combo's like Novak, Tekin and others.

Instead of using the EMF pulses to locate the rotor's position, they use either hall effect or visual sensors and tell the Speed Controller when to switch current to the next coil.

Hope this guide helped you guys Very Happy. If you dont understand it, just post the question ill be happy to answer it
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Brushless motors are More efficient, by producing less heat. require little to no maintenence, and can make more power then there retarted step-cousins.


This is my own personal writeup from a different forum.