If you are going to do scale aileron, elevator or rudder hinges, you are going to have to move the hinge line back from the leading edge of the control surface. "So, tell me something I dont know" you say.
Well sure you know that, but what do you use to handle the cantilever problem? (You know, theres a gap between the support structure and the hinge point, and the beam spanning that gap is called a cantilever). Well Ive been using metal tubing to do the job and I havent seen anybody else doing that.
Thats probably because I havent been to enough scale contests and talked to enough builders, or maybe its because these guys are just being cagey, but heres a method Ive been using for about eight years.
The first time I used this system I was building a Piper Tri-Pacer which uses Friese ailerons, and the cantilever in that case is severe as you can see in Figure 1.
I use 0.032" annealed aluminum for the bracket. The same
bracket is used for the hinges without the operator and serves the flap as well as the
aileron. This type aileron was used on the P-47 and many
The aileron is built using a bulkhead just aft of the hinge line.
Backing plates are cemented to the back
Zero gap hinges shown in Figure 2 are more common. The hinge line
is more properly located further to the rear so that the surface can be more easily
balanced. (See Figure 4)