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ErikJDurwoodII: That is not what I meant. In a purely magnetic "motor" it is precisely the rapid depletion of the magnet strength that allows the motor to "work". Were the magnets to maintain constant strength, the motor would not work. The slower the depletion of the magnets, the smaller is the power output. The more power output, the faster the depletion of the magnets. The folks that build these magnet motors often wonder why their magnets "degauss" so fast. They are missing the fact that the degaussing is what makes them work!