Abstract: The rotor and stator of a motor are separated by an air gap The rotor presents a plurality of magnetic flux windows of a given magnetic polarity to the air gap, and the stator provides a different number of magnetic flux windows of the given magnetic polarity to the air gap. The rotor carries a number of equally-spaced bar-type magnets, each magnet of which presents a magnetic pole of the given polarity, for example, a north pole to the air gap The stator carries a different number of equally-spaced bar-type magnets, each magnet of which presents a north pole on the other side of the air gap The rotor and stator carry a number of magnetic flux shields that are made of a material having a high magnetic permeability, for example, mumetal These flux shields are placed on the rotor and on the stator such that the rotor presents a number of equally-spaced north magnetic flux windows to the air gap, and such that the stator presents a different number of equally-spaced north magnetic flux windows to the air gap.