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12.09.2006, 05:20 AM
What about the EMF?
Controllers have a hard time sensing the possition of the rotor, with bifilar windings it would be even harder.
Costs; you are 'complaining' about the costs of a BL motor already, winding it bifilar wouldn't make it cheaper.
Did you ever observed a stator? it would be hard to nicely route the bifilar windings to start with.
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