wrote

Somehow this same barebones functional look reminded me a bit of the
Mosquito helicopter, also featured on the same site:

I didn't see what the engine was on the heli, but if you know what it is, do
some calculations. Figure the wattage for the gas engine heli, then convert
it into amp hours for the length of time that you want to fly, then figure
out how much weight of batteries you will have to carry.

My bet is that the batteries will weigh too much, and be too expensive.

I HATE being a pessimist!
--
Jim in NC