I'm currently dreaming up a super simple, square aluminum tube, welded H-Octo airframe. Since it's made of aluminum, and welded, the electric path should be pretty good.
Any electronic gurus have any idea if I could use the frame itself as the ground connection for the battery? The ESC's will be mounted very close to the motors, so if I could do this, I'd only have to run a single positive wire to each ESC.
Cars are built this way.
But I don't know, what with the high power and frequency of the ESC's operate at, will it just become a giant flying Yagi antenna and cause more trouble than it's worth?