Hello DIY Drones,
I am new to this forum. I am planning a build an UAV (Helicopter) that can carry a payload of 20 Kg. The UAV with this payload might weigh between 30 to 40 Kg (of course with very good Engg.). Also, the UAV has to travel at least to 20 or 30 km distance in one recharge. Hence I believe, gasoline powered UAV is cheapest option. However, I have tried various Engine options like Zenoah, DLE. Not able to find a suitable engine. Could someone suggest me a suitable engine or some other suitable option to fly the UAV?