Galloping Ghost, or GG for short, is a control system that came into being in the late '50s when escapement development was mature and many modelers had switched to single channel proportional using a variety of motor driven or magnetic actuators. The escapement crowd had learned how to "cascade" escapements for rudder and elevator control and some compound escapements had an electrical contact which enabled it to actuate a simple escapement for throttle control. Does anyone remember, 1 for right, 2 for left, 3 for up, 4 for down and quick blip or 5 for throttle? What fun!
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