Hevy Lift Gas powered Quadcopter with 3D flight capable
I just found this video where guys doing engine test in this big gas powered quadcopter. This construction looks very strong and I think it has capable for 3D flight.
If this big quad could do 3D Flight like Stingray 500>>
it could be best quadcopter prototype in this year.
I will try find more info about this quad. Stay tuned 🙂