Synchrogyro - RC twin rotor autogyro

My RC synchrogyro design. Engine: Enya 40 prop 11x5 Weight: 1900 grs (67 ozs) Rotor (s) diameter: 130 cm (51,2 “) RC controls: rudder, elevator & throttle. The synchro gears were made by a friend of a RC club in Murcia (team ARCM) It was my friend Georges Chaulet (France) who first designed, built and flew RC autogyros with synchronized rotors. He called them ’Synchrogyres’.