What’s the difference between "Brushed" speed controls and motors and "Brushless" speed controls and motors?

Brushed speed controls and motors refer to motors powered by Direct Current (DC). Brushless speed controls and motors operate on a form of Alternating Current (AC), similar to house current. Brushed motors use brushes to transfer power to the spinning electromagnet armature that operates in a permanent magnet field.

Brushless motors do not have an electromagnet armature, rather the windings stay stationary (stator) and induce their power to move the permanent magnets. In a brushless motor nothing touches except the drive shaft riding on ball bearings, and the efficiency and power are typically much better. More.

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