Hey I'm looking for suggestions on converting a 1/4 scale cub to a gyro. Somewhere I saw a one with a single rotor and no wing dont know how big the rotor or chord would be, maybe a twin rotor design without a wing. how big would the rotors have to be? I guess for the correct loading I can look at a rotor calc chart, but would like to see if anyone has allready done this. any help would be great. Thanks. Jerry