So here is some notes for anyone who wants to make a gyro copter with heli blades. 1 sizing and blade amounts are very important as well as thickness too big and they will strike the ground and explode , not only that they will not spin up correctly and will not function as a emulated airplane wing but more as a vacum cleaner that removes your airspeed and causes you to crash ... then you explode , too small will overspees your baldes , the blades will soon after rapidly dissaseble themselfs and a explosive manner. Configuration and positing are important too , to steep aoi will make too much induced drag and overspeed the blasea , to little and they will not spin up unless you are on a steep angle of attack . Also the blades must be neutral . This does have a pre roter system with group one activated while holding the brakes but you do not need it . Just roll up to like 50 mph and let them spin up natruly . Rotates at like 70 but you need about 50 to land in order to maintain a controlled vertical speed and heading