I also recall something about the coupled aileron and rudder controls. IIRC the ones with the coupling system had no rudder pedals.
Regarding constructors I was not aware of Erco but I did know about Alon and Forney(sp?) and thought they were the only constructors, so this thread has broadened my knowledge of the type which was basic to say the least.
I must admit I’ve always considered it an attractive machine, just a pity there aren’t more of them over here.
Sorry folks, I’ve just re-invented the wheel haven’t I? I’ve just noticed one of the earlier posts mentions the lack of rudder pedals in the ones with coupled controls. As far as I’m aware all the Forney ones were built with conventional control systems.