Small air gap motor

In an electric motor having a stator core member with inwardly extending polar projections having inner ends defining a bore, and a rotor member rotatably mounted in said bore and having a peripheral surface defining radial air gaps with said inner ends, the improvement wherein said air gaps respectively have a radial width of from greater than about 0.001 inch to less than about 0.006 inch taken between said peripheral surface and said inner ends, the ratio of air gap width to rotor diameter being from greater than about 0.0009 to less than about 0.005.