Finishing the hinges... The hinges I made require hinge pins that are a little too heavy to easily bend over and secure. I was scratching my head over this, then found that the right size brass tubing fit perfectly over the pin and locked the outer shell of the hinges in place. One small piece of tubing soldered on each side of the center hinge locks a single pin in place. I had doubts about the single long hinge pin but the extra brass doesn't look bad.

The "locking" brass tubing on the center hinge:



The whole aileron with the hinge pin in place: