I installed my first aileron hinges the other day, on my Raiden Tech P-51 .60 ARF. After reading many posts and tutorials, I decided to go with GP hinges. They recomended using CA or epoxy. When asked thier oppinion on Gorilla Glue (GG), they would not comment. I saw GG used in the Robart Hinge Points video, and it made alot of sense. The GG expands filling the voids between the barbs and is as strong as epoxy. One buddy expressed concern about the expansion of the glue and possibly splitting the balsa. I heard Elmers version of GG, called Ultimate glue (UG), foamed less. I purchased some UG proceeded to install the hinges. Slotting for these hinges took some time due to the added thickness of the GP hinge.

Here is what I did:

1. I oiled the hinges, removing the excess.
2. Slightly wet the slot, with a toothpic.
3. Aplied a thin layer UG to the slot, with a toothpic.
4. Aplied a thin layer UG to the hinge, with a toothpic, making sure to get it in the holes.
5. Pushed it in half way, and wiped excess glue.
5. Pushed remainder of way in, wiping excess glue.
6. Flexed hinge to ensure full travel, wiping excess glue.
7. Came back every 15 minutes to wipe excess glue as it foams. Acetone works great to gemove UG

Everything set up nicely, and I have full range of motion with no binding or restriction. I will be doing the rest of the hinged in the same manner, and let you know who it goes. Having never used CA hinges, only read about thier installation, I would have to say the GP hinges and UG process is much more time consuming. There is also a greater risk of gluing the hinge fixed, if excess glue isn't removed promptly.

I did a small experiment where I used a blue crayon and colored over the hinge area, filling in the gaps between the hinge and on the ends. I applied some UG and let it dry. two days later, I flexed the hinge and the glue popped right off in one chunk, with blue crayon adheared to it. I need to do the same with a uncoated hinge, as a control. I will also make some effort to determind the difference in foaming capacity between GG and UG.