I use a "S" type hinge for my ailerons. Here is what I do:
first I make 12 small strips of strapping tape

then i over lap 2 strips 1/4" and stick together sticky side to sticky side

then i tape one to the bottom of the wing and one to the top right next to each other, I do this at 3 spots on each aileron


lastly I set the aileron inbetween and press the tape down

and there you have a nice never come loose aileron hinge!

now how do you do your hinges?