Fuel required to spin rotors?

[Bryce Clegg]

The three rotors on the side are hand-cranked. However, I can't find whether the middle one has to have fuel and the gear to activate or not.

[EricH]

Originally Posted by Bryce Clegg

The three rotors on the side are hand-cranked. However, I can't find whether the middle one has to have fuel and the gear to activate or not.

It needs the gear, yes. And it needs it first, before the others will activate.

Fuel? Not listed as required. After all, its inspiration was man-powered...