Owner manual
❏ 5. If building working flaps, mount the flap servos
to two more sets of mounting blocks. Note that while
the aileron servos are mounted to the hatches in a
“mirrored” image, the flap servos are not mirrored
(so that the flaps will work together (instead of in
opposition as do the ailerons).
It will be easier to hook up the ailerons before
joining the wing halves, so go ahead and do so
as instructed below. But it will be better to hook
up the flaps after the model has been covered
and the flaps have been permanently joined to
the wing with the hinges.
❏ 6. Enlarge the holes in the aileron servo arms with a
Hobbico Servo Horn Drill (HCAR0698) or a 5/64" [2mm]
drill. Connect the ailerons to the servos using the
hardware shown in the photo. Drill 1/16" [1.6mm] holes
into the ailerons for the screws that mount the horns.
Poke several pinholes into the ailerons and wet the area
with a few drops of thin CA to harden the balsa.
JOIN THE WINGS
❏ 1. Remove the flaps and ailerons from both
wing panels.
❏ 2. Test fit the die-cut 1/8" [3.2mm] plywood wing
joiners into each of the three wing panels. Note that the
ends of the joiners marked “R” are the ends that go into
the center panel. Make adjustments as necessary to
get the joiners to fit into the wing panels, then test fit the
wing panels together with the joiners.
❏ 3. Tightly tape the outer panels to the center
panel. There should be no gaps. Check the dihedral
by laying the center panel flat and measuring the
distance between the workbench and the bottom of
the tips under the spar. The distance should be 3"
[76mm], but a variance of plus or minus 3/8" [10mm]
is acceptable as long as both panels are the same.
❏ 4. Prepare for gluing the panels together—this
should be done one panel at a time.Gather all the items
necessary including 30-minute (or longer) epoxy,
mixing utensils, wax paper, masking tape, paper towel
squares and denatured alcohol for cleanup.
❏ 5. Make sure any parts-fit problems in joining the
wings have been resolved—there won’t be time to
correct problems once you start gluing. Mix a batch
of 30-minute epoxy—1/2 oz. [15cc] should be more
than enough to do the job. Apply epoxy to the rib on
the end of the outer panel and to the inside of the
outer panel where the joiners go. Apply epoxy to the
joiners and insert them into the outer panel. Coat the
inside and outside of the outer panel the same way,
then slide the two together. Wipe away excess epoxy
as it oozes out. Use plenty of masking tape on the
top and bottom of the wing to tightly hold the panels
together. Continue to wipe away excess epoxy as
you make sure the panels are accurately aligned. Do
not disturb the wing until the epoxy has fully
hardened. Hint: It will be much easier to wipe excess
epoxy from the wing before it has hardened than it
will be to try sanding if off after it has hardened.
❏ 6. After the epoxy from the previous step has
hardened remove the masking tape and join the
other panel to the assembly.
❏ 7. If you haven’t yet done so, fill the corrugations
with lightweight balsa filler, allow to dry, then
lightly sand smooth.
Set the wing in a safe place while you are working on
the fuselage.
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