The RCM Basic Trainer had the flat bottom airfoil and the rear of wing sat flush with the rear fusalage. The rudder was swept back and it was .40 powered. Then there was the RCM Trainer 60 which had a symetrical airfoil and the wing sat on a "cabin". It was .60 powered and the rudder was swept back in the front and swept forward at the rear.

I built the RCM Trainer 60 in 1973 from a Bridi kit and learned to fly with it. I had a Fox Eagle I .60 in it (which I still have) and it flew great.

Bruce