Hello!

Somebody did autogyro under 26сс the gasoline engine? What blades can be used for a rotor and in what quantity?

I wish to use 3 blades from 90 class heli in length about 710-720 mm(63 mm width).

Model parameters:
Fuselage length - 1200 mm
Main rotor with a direct drive gear
Tail uncontrollable
Take-off weight to 3.7-4.2 kg
Engine thrust - 6 kg


Whether such blades will suffice me that the model has flied up? Or it is necessary to do blades most? Whether there are any design procedures of the main rotor?

WBR, Alexander