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...
Derek Warnecke Posted February 26 Author Share Posted February 26 Everything has been painted and is ready for assembly today. Run video to follow... Quote Link to comment Share on other sites More sharing options...
Derek Warnecke Posted February 27 Author Share Posted February 27 (edited) All finished and running great in both directions! Very little vibration from the motor. Edited February 27 by Derek Warnecke 2 Quote Link to comment Share on other sites More sharing options...
Patrick Ray Posted February 27 Share Posted February 27 Beautiful work Derek! 1 Quote Link to comment Share on other sites More sharing options...
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