Perform steps 7 through
9
only if you are
installing fixed landing gear,
4.
Test fit the die-cut
1/8"
balsa
aft inner spar
7.
Prepare a set of
right
wing ribs by using
30-
minute epoxy to glue the die-cut
1/8"
plywood
fixed landing gear rib doublers
W4G, W5G
and
W6G
to the die-cut
3/32"
balsa
ribs
W4, W5
and
W6
exactly
as shown in the photo. Make
sure the doublers are on the side of the ribs as
shown in the photo.
8.
Prepare a set of
left
wing ribs the same way
but
use the photo above
to make sure you glue
the doublers to the correct side of the ribs.
Remove the shaded area of balsa shown ir
the previous two photos after the epoxy
i s
fully cured.
Note:
Details for fixed landing gear are shown or
the
left
wing plan.
10.
If you will be installing lights in the wing, drill
3/16"
holes through wing ribs
W3
through
W14
in
the approximate location shown in the sketch on
step 5 page
21.
3.
Fit the ribs and spar web to the bottom spar
so the ribs accurately align with the plan.
11.
Use
I
straightedge and a ballpoint pen to
mark a vertical line
1/16"
from the front and back of
the spar notches in both
W2
ribs.
Use a sharp
hobby knife to
lightly
cut halfway through the balsa
along the lines. You will remove this section of
balsa to accommodate the spar joiners when it is
time to join the wing.
BUILD THE OUTER WING PANELS
For clarity, some of the photos show the wing off
the building board without the plan, but of course
you should build your wing over the plan the same
as we do.
Build the
right
wing panel first
so your progress
matches the photos.
1.
Do
not use any glue until step
8.
Pin a
1/4"
x
3/8"
x
36"
balsa
bottom spar
over its
location on the plan
so the root end extends past
the dashed line by about
1/8".
Stick the pins
through the spar at an angle
so they will not
interfere with the spar web when you position it in
the next step.
2.
Test
fit
ribs
W2
through
W14
to the die-cut
1/8"
balsa
spar web
(W15).
If necessary, deepen
the notches (in the ribs or in the spar web)
so the
ribs fit all the way into the spar web.
-
22
-
BEVEL THE NOTCHES IN THE
RIBS AND SPARS TO MATCH
THE ANGLE ON THE PLANS
ORIGINAL NOTCHES
5 .
Test fit the die-cut
118"
balsa
aft outer spar
(W16)
and the die-cut
1/8"
balsa
aileron spar
(W17)
into the notches of ribs
through
W14.
If
necessary, bevel the notches in the spars and ribs
the same way you did in the previous step.