by bitswype, published
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It might add a lot of "webars" to each wound segment if they can be filled with nails. There is iron in motors because just a coil produces a poorly performing magnetic field. Iron has the ability to soak up the magnetism from the coil which adds to the field of the coil.
Brushless DC motors are commonly used in electric RC airplanes and 'copters. Controllers for them are fairly cheap and readily available from many hobby stores and online sources.
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My hope is that someone will be inspired by this, and take it one more step : )
BTW, there was some gnarly math to get the endplates to look like that, intersecting circles at specific points and all that ... :D
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