What are the advantages of brush motor?

Brush motor uses carbon brushes as the two contacts of the motor power supply, and uses the speed control handle and controller to control, through the secondary deceleration of the gear and the overrunning clutch to achieve the stepless speed regulation of the electric bicycle 0-20 km/h. The brushed high-speed motor used has high gold content, strong motor reduction gear strength, good wear resistance, and reasonable design, so the repair rate is low; the brushed motor uses brush mechanical commutation!