Vintage R/C Helicopter - Du-Bro Whirlybird 505

Radio Control helicopters had a rough start back in the early 1970’s. They were primitive vehicles compared to what’s available today and just only had enough controllability to hover or perform slow, forward flight. This heli is an example of the USA’s first commercially produced and successful operational model, the Whirlybird 505 designed by Dave Gray and manufactured by Du-Bro, makers of accessories for R/C model airplanes. There is no gyro connected to the tail rotor as one would normally find on a