Yeah, jucava - looks like it . Flying slow (my preferred flying), with a Cub looks much better when you add in the rudder. The plane will fly with only aileron. It'll also fly on only rudder due to the dihedral in the wing. You guys - explain roll coupling - you can do it better than I. A plane with no dihedral will have minimal roll due to rudder input - while my old 72" old timer had 7 " of dihedral. Three channel, but with all that dihedral it was as responsive as an aileron-equipped plane. For what it's worth, I put the rudder on the 'aileron' channel so I wouldn't have to think about control differences when flying.