Electric scooter components
Electric scooter motors: geared hub vs direct-drive hub
How electric scooter motors are built: BLDC instead of brushed motors, chain drive (Razor E100) as the exception for kids' models, geared hub with a planetary reducer (freewheel, no regen) vs direct-drive (gearless) hub in the wheel (KERS regenerative braking, quiet running). What the spec line actually says: nominal vs peak power, torque, sensored/sensorless controller, dual-motor.