Testing an alternator for a 12 footer at Otherpower

Dan Bartmann in action at Otherpower building and testing a new design alternator for a 12 footer (3.6 metre diameter turbine).  See his full description on the otherpower discussion board of this machine with 15 inch magnet rotors, and thick 2 inch diameter magnets.  He squeezes a bit more copper in there, and can get 1000 watt continuous without overheating while testing on the ground.  Nice work.

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