Old School Model Works Javelin Construction Manual page 7

Step 32 - Wing Assembly (ailerons)
To build up the area where the aileron control
horns will be mounted, glue a single A3 in place,
directly in line with where the plans show the
cutout in the servo hatch for the servo arm. Then
glue four additional A3's to this first one - two to
one side, then two on the other - as shown here.
It is important to saturate these pieces by
wicking in proper amount of thin C/A to
harden these pieces.
Step 33 - Wing Assembly (ailerons)
Locate both A2s from BP3. These
will be glued to A1 and to the
short side of all the A3s, as shown
here. DO NOT GLUE THIS TO THE
WING.
Step 34 - Wing Assembly (ailerons)
Now locate both A6s from BP9.
Using the same technique as you
did on the rear center sheeting,
sand a small bevel on the rear of
this sheeting, where it will touch
A7.
When satisfied, glue A6 in
position, making sure it is glued to
the rear or A7, all of the A3s and to A2.
When finished, you should have two ailerons that can be removed
from the wing by simply lifting them off the tab extensions. Pretty
neat, eh?
Step 35 - Wing Assembly (lower leading edge sheeting.)
Using 1/16" x 4" balsa sheets,
measure, cut and glue the lower
leading edge sheeting into place.
We recommend doing this in
sections - two small center section
pieces (from R1-R4), and two
tapered outer pieces (from R4-
R10).
It's best to glue the forward edge of the sheeting to the leading
edge first. When the glue has cured, apply glue to the ribs, then
gently wrap the sheeting around the curvature of the wing ribs.
Step 36 - Wing Assembly (cap strips)
Pre-cut in BP9 and BP10 are 1/4"
strips. These are used as the cap
strips, centered on R4-R9, and
flush with the outer edge of R10.
Measure, cut and glue these into
place. They should extend from
the back of the leading edge
sheeting and butt-up against the
trailing edge.
Construction Manual
Step 37 - Wing Assembly (trim strip)
You should have a couple spare
lengths of 5/16" square balsa,
trimmed from the leading edge.
Use these pieces to make a strip
that will be glued to the rear
basswood mount for the aileron
hatches. It should run the width
between the cap strips and be
flush with the outer surface of the cap strips - as shown here.
This is not a structural piece. Instead it is a trim piece that aids in
covering later on, as you'll have to cut out the covering in this area
to install the servo and hatch.
Step 38 - Wing Assembly (top center sheeting)
Now it's time to carefully remove
the wing from the building surface
as work now shifts to the top of
the wing.
With the wing flipped over, install
both upper sub-spars using 3/16"
square balsa strips. Then locate
both ST1 and two ST2 from BP8.
Glue these in place as shown, using the same technique used
when attaching the bottom center sheeting.
Step 39 - Wing Assembly (top leading edge sheeting.)
Using 1/16" x 4" balsa sheets,
measure, cut and glue the top
leading edge sheeting into place.
Use the same technique as
applying the lower sheeting,
doing this in sections and gluing
it to the leading edge first, then
wrapping it around the wing's
curve afterwards. You will also need cut a thin strip of 1/16th to fill
the gap in the center section between the leading edge sheeting
and the ST2s. Measure and cut from scrap 1/16th sheeting.
Step 40 - Wing Assembly (A5)
Locate four A5 from BP2. These are
glued in place on the insides of both
ends of the aileron pockets.
Step 41 - Wing Assembly (tab removal)
Now it's time to trim off the tabs
from the trailing edge. Most tabs
will pop off quite easily, but you'll
need to cut the R1 tabs as they are
two pieces of plywood bonded
together (a Japanese saw works
great for removing R1's tabs).
The tabs on the center section
should be cut flush with the
sheeting. The tabs on R10 should be flush with the A5 you just
installed.
But the tabs on R4-R9 will also need to be trimmed 1/16" below
the trailing edge. This will allow the cap strips to be flush when
installed.
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