I have started on a rebuild of a plane I have rebuilt five times already. I'm currently wondering if I can add flaps on this go around. As it turns out I'm having to reattach the strip ailerons the wings are currently equipped with, so I will now have the option of adding flaps.

My question is how to drive the flaps. The torque rods currently in use will be covered over by flap torque rods. I have the option of putting servos in the wings, or copying JHH's design and using two nested brass tubes. One will leave horns hanging down which I don't have now. The other is kind of finicky to build and takes up a lot of space at the input ( servo) side.

Any other ideas on how to set up flaps where there were none before? Also how much of the strip aileron should be flap? The ailerons are 17" long right now.

John