Simple DC Motor Explained. Fundamentals of a DC motor by Designmate. Starter motor. Fleming left hand rule. Commutator. Maxwells right hand screw. Magnetism: Motors and Generators. Starter motor. Armature. Brushes. Solenoid. Ignition circuit. Solenoid terminals. One way clutch. Starter Clutch Drive Cranking. Reductor gears.