Mike Howell, PE
EASA Technical Support Specialist 

Concentric to lap winding conversions are common practice in many EASA service centers. For most stators, this change is feasible and can be made with little difficulty. In some cases, however, it can be quite challenging and result in undesired outcomes due to reduction in copper or insulation. One such challenging rewind is that of the two-speed two-winding hoist or crane motor.

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