> Run time. 16 hp motor is (assuming 100% efficiency) 746*16 = 12kw. The
> largest battery pack ($7500) is 5.6kwh. I see a little less than half an
> hour
> run time at 100% efficiency. He says the motor is 90% efficient and the
> Alltrax Axe controller I see in the photo is similarly efficient so the
> overall efficiency is 81%. Using that value, the run time reduces to 0.37
> hours or about 20 minutes. (Yeah, I see his 1 to 1.5 hour flight duration
> claims but like most EV range claims, I take that with a large grain of
> salt.)
You're assuming the motor has to run at 100% power at all times, this is
not the case.
I would guess that most cruising is done at 50% power or less.
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