Sorry to say but those engines are crap. Mine ran for 20 min and then died. My problem was a loose nut that allowed the stator to move which sheared off the key in the keyway. The loose nut bouncing around in there must have damaged some electrical junk. I made a new key, put it back together and it ran briefly. I swapped it out for a traditional engine and tav-2 system. It's in the junk pile now.......brand new......gearbox and all.
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