9. Now were going to prep the hinges for installation. Take a small drop of oil and place it in each of
the pivot points of your hinges. The oil prevents excess epoxy from bonding the joint
(figure 72).
10. Working with one panel and control surface at a time, apply epoxy into the hinge holes of the
trailing edge. Apply epoxy to one side of the hinges and insert them into the holes
(figure 73, 74, and
75).
11. Apply epoxy into the leading edge holes of the control surface and the other side of the hinges.
12. Carefully insert the control surface into the hinges and butt the two surfaces together. Move the
surface up and down a couple of times to make sure all the hinges are aligned correctly and the desired
throw is attained. 35 degrees for ailerons and 45 degrees for all others
(figure 76).
13. Use some masking tape to hold the surfaces together and let cure for at least eight hours. Repeat
these steps until all of the surfaces are epoxied in place
(figure 77).
14. Install the tiller springs you set aside in chapter 2 to the tiller horn and tiller.
Tip#4
Optional step. After your epoxy has cured, it would be a good time to seal all of your hinge gaps prior to
installing you hardware. This can provide you with a better flying aircraft by increasing control surface
performance and preventing possible flutter. Clear or matching covering material can be ironed in place to fill
any gaps on the bottom of your control surfaces.
Take approximately a one-inch strip of covering the length of your surface. Fold it in half while placing into
the gap with the control surface fully deflected up and iron it in place. Check to make sure you still have full
surface travel once you have completed
(figure 78, 79, and 80).
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