Very well done, good construction. Coaxial systems are indeed more efficient than conventional one-rotor + tail rotor, they are also less dangerous on ground and easier to fly due to non-existing sideway thrust by the tail rotor. Good choice.

Seems to me, when it comes to helicopters, coaxial is the way to go. No torque issues or high speed tail rotor with it's complicated mechanics plus more stable and easier to fly. Am I missing something?

Nice frame work....Looks strong

Nice work there!!

How can revolve around the axis right and left

no supera , ni tampoco iguala en cuanto a maniobras y fluidez de vuelo al equivalente americano equipado con turbina . Igualmente no está mal . Gracias x mostrarlo . Saludos .

can these auto rotate as well as mosquito ultralight?? or not ?

Very nice looking craft.

Farmer Guo Leiting's home-made helicopter in Shanxi

Ada cover n equip with analog radar

Collective ? Cyclic? Are yaw turns made with rudders from down wash? Or differential rotor speeds

hello. what happen if there is a engin failure. Does autorotation is possible?

bro ur facebook address is not available, how to contact u? tq

Hey brother where can I buy the parts to make please

how much?

Здраствуйте мне нужен такой редуктор с несущем винтом соосной схемы

BUAA University and HU professor team

I want to buy,but I have no money😟😟

Legal

This is a copy of the Russian mini helicopter Micron! Here are the accelerators doing what they are doing!

Where can I buy one this my Facebook Abdulrhman Aezah