Derek Warnecke Posted February 19 Share Posted February 19 I wanted to highlight an in-progress restoration of an electrically-reversible 1942 Emerson 87641-AL "Roundnose" ceiling fan. The amount of labor involved in hand-winding a reversible shaded pole motor is considerable, especially for a 28-pole motor, and I can't help but admire what I see as I disassemble the motor housing for restoration. Each motor pole has a pair of wound shading coils. Each CW and CCW set is connected in series and shorted via a SPDT toggle to short either the CW or CCW set to bias the motor to run either direction. The rotor is a real tour-de-force of casting and machining expertise. There is an inner shaft with oil grooves machined for CW rotation and an outer shaft machined for CCW rotation with a corresponding sleeve on the stator side. Very cool! 5 Quote Link to comment Share on other sites More sharing options...
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