Abstract: A synchronous motor of improved construction characterized by a large diameter rotor mounted in axially juxtaposed parallel relation to the stator coil or coils, rather than within the interior of the stator coil or coils; the stator coil or coils being of substantially the same diameter as the rotor and having stator pole pieces circumscribing the rotor at the outer periphery of the coil or coils, rather than the inner periphery of the coils.In the preferred construction, first and second annular electrical coils of given outer diameter are positioned on opposite sides of a coaxially mounted wheel-like rotor of substantially equal outer diameter. A pair of circular plates of magnetically permeable material are positioned adjacent opposite sides of each coil perpendicular to the axis thereof, and have tooth-like flanges extending axially from their outer edges adjacent the outer periphery of the rotor, whereat the ends of the flanges of each pair of plates define a plurality of interleaved poles.