Despite all the magnets and other contraptions/doodads on such "motors", many of them are just flywheels. If the friction loads are very low, they will spin for a fairly long time once brought up to speed. This fools lots of people.
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There are "permanent magnet motors," but the energy to drive them comes from the electrical voltage/current input, not from the magnets. So-called "magnet motors" (e.g. Perendev) are not the same thing, and they don't work as usually claimed.
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Highly efficient as there are no rotor losses.For example a standard motor of 11kwp4p will have a eff of close to 89% but a pM motor will have 95%.Frame size also reduces.
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