G'day Why not just leave it as it was designed? If you put the rudder control on to the aileron channel on your radio, the plane will fly almost the same as if it had ailerons. The only thing it won't be able to do is an axial roll.

My favourite plane is the Sig Kadet Senior. It does not have ailerons and yet I can have hours of fun flying it. I recently built one with ailerons and to do this I had to reduce the dihedral angle and cut into the wing to fit the ailerons (I used "barn door ailerons" the same size as the ARF version which comes with them). The Aileron verson can do more aerobatics (it can do a more or less axial roll) but other than that, I prefer the non aileron version.

I always suggest non-aileron planes to people trying to learn without a lot of help. Powered gliders like the Multiplex Easystar (with a better engine) make excellent trainers for would be glider pilots and also for trainee pilots in general particularly those who have to try to learn alone. Planes with lots of dihedral have stability so that they will fly themselves if you get into trouble ( and you will ) and will return them selves to level flight if you just let go the controls.

If you are going to add ailerons then you need to reduce the dihedral or the ailerons will not be very effective. Flat bottomed wings with large amounts of dihedral are not a good place for ailerons. It is also often necessary to use "differential ailerons" to avoid "adverse yaw" problems with wings like this too. (Differential ailerons means that the ailerons go up more than they go down or visa versa and adverse yaw is caused when the drag caused by an aileron causes a wing to turn opposite to the direction it would normally do.)

Anyway, have fun - I really think you would be better to fly the plane as designed initially and do mods once you have some flying experience.

Mike in Oz