Complex sentence: Lacking rudder pedals, the Ercoupe was flown entirely using only a control wheel: a two-control system linked the rudder and aileron systems, which controlled yaw and roll, with the steerable nose wheel.
Split into simpler sentences: Lacking rudder pedals, the Ercoupe was flown using only the control wheel. A two-control system linked the rudder and aileron systems, which controlled yaw and roll, with the steerable nose wheel.