Hinge Installation is Critical

If you are working with an almost-ready-to-fly (ARF) aircraft or are building from a kit or scratch, you will be installing hinges. This is a critical step in model construction. If the control surface binds or has too much of a gap, your baby is going to be a dog and you will have definite control problems.

There are two basic types of hinges: the "living" hinge that is installed using CA glue and the "pinned" hinge that is put in with epoxy. There are advantages and disadvantages to using either type. I have used the living hinge for several years and like the fact that it only takes a few drops of CA to set the hinges in the control surface; however, I have had these hinges break and always seem to get the CA all over the covering, no matter how careful I am. I also have glued the control surface to the wing and tail.

Recently, I went back to pinned hinges. These hinges move with much less resistance and are more durable. I cover the hinge with lip balm before installing it with 5-minute epoxy. When the epoxy dries, the excess can easily be removed from around the hinge.

The Great Planes Slot Machine is a good investment, and it makes hinge installation much easier. Just hang on tight when you start it or you’ll have a hinge slot where you probably don’t want it.

Finally, after you have a control surface that moves easily and permits adequate throw, don’t forget to seal the gap. It is amazing how much difference this will make in the performance of your aircraft. A roll of clear MonoKote will seal the control surfaces of all the aircraft you have. It also keeps the hinges secure and helps prevent control surface flutter.