14. Use the
flap
hinge drill guide to drill holes
in the flap the same way you did for the wing.
\
15.
Cut 1/4" off the end of the outermost
hinge point that fits into the flap. Test fit the flaps to
the wing with the hinge points. Adjust the position
(depth) of the hinges until the flap aligns with the
wing the same way it was before you cut it loose.
Make adjustments until the flap fits the wing and
freely moves about its range of motion. Strive for a
good fit where the top of the flap meets the top of
the wing.
16. Return to step 1 page 32 and mount the
other flap to the wing the same way.
BUILD THE AILERONS
1. If you have built flaps remove them from
the right wing panel. Use a razor saw to separate
the aileron from the wing by cutting between the LE
of the aileron and the TE of the wing. Refer to the
plans to find the location of this gap and poke a pin
through the sheeting to verify you have found the
gap. Use the razor saw to cut the ends of the
aileron from the wing along the holes you poked in
the top sheeting.
2. Sand the sheeting and the
rib stubs
on the
wing even with the TE. Glue a piece of leftover
3/32" balsa to the wing tip rib. Sand it to the shape
of the wing.
3. Sand the sheeting and the
rib stubs
on the
aileron even with the LE and the tips. Glue the
die-cut 1/8" balsa
aileron leading edge
(W17A)
to
the front of the aileron. Sand the leading edge flush
with the ends and top and bottom of the aileron
sheeting.
4. Use the
Straightedge and T-pin technique
to
mark a centerline on the wing TE and the aileron
LE. Cut the hinge slots where shown on the plan.
Test fit the aileron to the wing with the hinges.
Adjust any hinge slots
if necessary so the aileron
and wing align. Sand the tip of the aileron
so there
is about a 1
/16" gap between the end of the aileron
and the wing tip.
5. Bevel the leading edge of the aileron to a
" V using the centerline as a guide. The bevel must
permit the full amount of aileron throw as specified
on page 68, plus a bit extra to prevent
servo binding.
34
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6. Replace the flap onto the wing. Adjust the
root of the aileron and the tip of the flap
so there is
approximately a 3/32" gap between them.
7. Return to the first step and build the aileron
on the left wing panel the same way.
MOUNT THE FLAP AND AILERON
SERVOS
1. Cut the openings in the bottom of the wing
sheeting for the die-cut
1/16" plywood
aileron and
flap servo hatch covers
(if
you're building flaps).
Start by cutting a smaller opening at the location
indicated on the plan. Carefully enlarge the hatch
openings using a fresh #11 blade and a
straightedge until the hatch covers fit.
Hint: As
you
zero-in
on the final shape of the hatch openings,
use the hatch covers themselves as a template to
cut the openings.
2. Drill 1/16" holes through the punch marks
in the servo hatch covers. Place the hatch covers
on the rails in the hatches and drill 1/16" holes
through the hatch covers into the rails.
