200ml of fuel= 1.78Kw of energy. Efficiency of a small 2 stroke petrol engine, 20%= 450W used for the disk.

Small customized 5Hp petrol engine + fueltank+ electric starter = +/-10 kg.

5Kw electric motor+ 12S 10 000mAh batteries*+ ESC= 7kg.

*Almost 450W, comparable to the usable power of the fuel.