[fox46]

I'm into model helicopters and airplanes- think of this a standard model helicopter with a .30ci engine weighs about 5lbs, with a 1060mm diameter rotor. The .30ci glow engine produces at peak output, 2hp. The two drill motors combined produce 720Watts. There is 750 Watts in one horsepower. Now to compensate for the differences in electric power ratings vs gas power ratings, let's give the drill motors the benefit of the doubt, and multiply their power output by three. So to recap, the 5lb helicopter produces 2hp to lift itself, and the robot can produce a little less than 3 hp with two drill motors. So the chances that the robot could even come close to lifting it's 15lb batter is very slim (impossible).