4. The hinges will set at an angle, so carefully, using a
1/16” drill bit, drill the hole in the hinges to an angle
(it helps to hand drill this). Work until the angle
matches the slots in the aileron.
5. Center the hinges with the slots in the aileron (AH-3
at the tip, AH-2 in the center, AH-1 at the base)and
with the slots in the hinges facing up (it helps to have
the wing handy for reference).
13. Same hinge assembly techniques, glue two FHs
together, and make two hinges. Cut the 1/16” wire
to fit, and slide the hinges onto the wire.
14. Epoxy the “top left” half to the bottom, trapping the
wire/hinge assembly.
15. Repeat for the right side flap section.
6. Lay the hinge/wire assembly into the channel in the
aileron, and epoxy the “top left” aileron half to the
bottom, trapping the wire. Clean the epoxy from the
hinge slots, and place the aileron on a flat surface (it
helps to add weight for pressure to the assembly)
and let the epoxy cure.
7. Repeat the procedure for the right aileron, starting
with the bottom right half. If you always start with the
bottom half, the slot in the hinges always faces up.
8. Build the outer flap section the same as the ailerons,
starting with the bottom left half.
9. Epoxy two FHs (flap hinge) together. All the flap
hinges are the same, and use the same assembly
techniques as with the aileron hinges. Make two
hinges.
10. Angle drill the hinges to match the slots in the flap,
and cut the 1/16” wire to fit. Slide the hinges onto
the wire, and epoxy the “top left” half to the bottom.
Remember, start with the bottom half and the hinge
slots face up!
11. Repeat the procedure for the right side flap section.
16. Trim and sand the edges of the control surfaces to
remove excess epoxy. Carefully remove any
excess epoxy buildup in the hinge slots.
17. Sand the aileron and flap sections to an airfoil
shape (shown on the plans). You don’t have to be
exact here, we even tested an airplane with square
control surfaces, but I don’t recommend that; it’s a
scale airplane, after all!
18. Since mounting the control surfaces can be consid-
ered a final assembly item, I recommend covering
the wing and control surfaces before attaching
them to the wing. Here we go:
19. Locate and cut slots through the wing sheeting
(CAREFULLY! That’s my favorite word!) Flush with
the respective ribs. See plans for hinge/rib relation-
ships. Trim the slots and test fit the aileron/hinge
until the hinges slide into the slots and lock into
W18 (for the ailerons, W17/W16 for the flaps). Trim
the slots in the hinges to allow for the angle. Note
that the ailerons and flap sections cannot be
reversed; each is specific.
12. Same techniques again for the inner flap section,
start with the bottom left half.
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