I am following your thread and have the opposite question. I am just finishing up a PT-20 trainer kit. There is an option to include the ailerons or lock them. The ailerons are to installed, but the servo is left out and the ailerons are fixed in a neutral position. The servo can be installed and the lock removed at any time. I have zero hours of flying time and intend to start to learn. Would it be better to go ahead and install the servo when I start or go ahead and learn as a three channel plane?
Thanks for your advice
Jim
YES!!!!!! Definitely.
Learn all four channels. It just makes sense to learn how to control it now with ailerons. You can always leave the aileron in the center position and fly with rudder only if you so desire, but learning all four channels now is definitely the way to go.
CGr.