Originally Posted by
Fly Aiprt
There is no need to install the assistance motor at the wheels, just as the bike electric drive isn't necessarily installed at the pedal crank, but rather in the wheel.
in bicycles, there is an important advantage when the electric assist is installed at the crank: it is then able to take advantage of the gearing (when the bike is geared). There's little downside as far as power is concerned, because the drivetrain is short and relatively inelastic. In the case of a trimmable H-stab, it seems pretty clear that the jackscrew is a better location for the motor than the manual trim wheels.