There was an Ercopue based at my local airfield for many years. It was the survivor of three bought postwar by the flying club, but they proved unsuitable for

There was an Ercopue based at my local airfield for many years. It was the survivor of three bought postwar by the flying club, but they proved unsuitable for pilot training; not only due to the rudder-aileron linkage but also their inability to spin. Neither was a good basis for pilots moving to more advanced aircraft. The club used a couple of Austers as a replacement before adopting the Cessna 150, and that was that for the next 50 years! Early Piper Cubs had the linked rudder-aileron as an option but it was soon abandoned.