Yet another thing: Are you 100% sure that you have only 110V and not 220V in the building? More specifically: is the breaker in the panel of the house/mail building a single pole breaker, or is it larger, like the one for the washer and dryer?
If it is a larger one or you have two small ones for the hangar, even if in the building you have only 110V outlets, it's almost sure that you have the whole 220V. You just need two extension cords and keep probing any combination of two outlets till you find that the difference of tension between the two hot is not 0V, but 220V (if you find 110 instead, you've found an outlet where phase and neutral are swapped). First, if you have panels with two or four outlets, try between them: especially a few years ago was popular (and legal) to have split-phase circuits with both the hot wires and a common neutral, which could have been of reduced size because the returns from the two hots would cancel each other (as far as I know, it's no longer allowed on new plans, because with the use of electronic power supplies they've found too many charred neutrals).
Even though it is pretty ugly and definitely a makeshift solution, you can derive 220V by building a Y-shaped extension cord, combining together the two neutrals to form the neutral of the 220V circuit and keeping separate the two hot. It's perfectly safe except if you plug it in an outlet where the neutral and the hot are swapped.
In any case, I think that the best thing to do right now is to proceed to test the motor, with the "hand starter", disconnected from the rest of the wiring.
Paolo
Damascus, MDThat brings up another point.
Line power is a sine wave and most modern generators use an inverter which
produces a square wave.
I have no idea if that would present a problem to your converter but if
possible testing with line power could help trouble shoot.
Ken from Canada.
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