Page 6
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Construction Manual
need to bend around R4.
There are two ways to do this. One
is to simply cut the leading edge strip
into two pieces, meeting at R4. If you
choose to do this, pay attention to bevel
the ends of the cuts so the two leading
edge pieces butt up against each other
properly, without a gap.
The other way is to make a series of 3-4
small cuts into back edge of the 5/16”
strip, where it will bend around R4. Make
these cuts about 2/3” of the way through
the strip. This will relieve enough wood
to allow it to form the bend and remain as a single piece.
Neither way is necessarily better. Use what best works for you.
Be sure to get plenty of glue for a good bond to all of the ribs and
the tips.
Step 24 - Wing Assembly (R2)
Locate both R2s from BP2. Note the
same circle designator to tell you the
orientation - circle towards the top of
the wing (building surface).
Glue them in place as shown, on each
side of the R1 assembly. The front notch will fit around the leading
edge and make sure that the back edge is flush with the lower
sub-spar.
Step 25 - Wing Assembly (lower center sheeting)
Locate two ST2 and two ST3
from BP8. Glue ST2 in place
against the trailing edge, then
ST3, making sure there is a good
bond to the ribs, spar and trailing
edge.
The design of the wing will also
make this sheeting flush with
trailing edge.
Step 26 - Wing Assembly (rear center section)
Now we will assemble the rear of
the wing’s center section.
Locate one of the 1/16” x 4”
uncut balsa sheets. Measure
and cut two 4” x 6-3/8” pieces.
Now, from these smaller pieces,
measure and cut four 1-1/4” x
6-3/8” wide strips.
Two strips are laid into the tab
extensions as shown here. Glue them to each other and to the
trailing edge of the wing.
DO NOT GLUE THE SHEETS TO THE
TABS,
or you’ll need to do a LOT of extra sanding later.
Step 27 - Wing Assembly (rear center section)
Next, locate both R1As from
LP1 and eight A4s from BP2.
Both R1As are glued in the
center, as a continuation of the
R1 ribs.
Glue one A4 to each end of
the sheeting, in-line with the R4 ribs to form the caps of this rear
section. Then glue two more A4s half way between the R1A and
A4s.
The remaining four A4s are then glued midway between the
installed pieces so they will equally support the wing sheeting.
Step 28 - Wing Assembly (rear center section)
Locate the other two 1-1/4”
strips you previously cut as
these are used to finish this rear
section.
Lightly sand a bevel on what
will be the rear edge of both
pieces. This bevel should take
off just about half of the sheet’s
thickness, running the entire length of the piece and about a 1/4”
wide. This bevel will give a much nicer fit.
When finished sanding, glue these two sheets in position as shown,
again making sure they are glued to the R1As, the A4s and the
trailing edge. When properly aligned, this sheeting will be just shy
of flush when compared to the trailing edge.
Step 29 - Wing Assembly (ailerons)
One of the more unique features
of the Javelin is the built-up
ailerons. So, let’s get started.
Take a moment to look at the
diagram to the right. We’ve
called out where each of the
aileron pieces will go during the next
steps.
Notice the tab extensions. They all
have a unique cutout where A1 lays
at a 45° angle. Locate both A1s and
lay them into the slot as shown here,
centered side to side along the space
for the aileron (do not glue).
Step 30 - Wing Assembly (ailerons)
Locate both A7s from BP9.
These lay on the tab extensions as
shown, but first sand a small bevel
along the edge where this piece will
butt up against A1.
When finished, lay the A7s on the tab
extensions as shown, up against A1.
Tack glue A7 to A1 in several spots, ensuring the two pieces are
lined up, then finish gluing the two pieces together.
Step 31 - Wing Assembly (ailerons)
Locate all of the A3s from BP1 and
BP2. These fit as shown, in line with
each of the ribs. Glue these in place,
making sure they are flat against both
the A1 and A7 pieces.
We find that these are easier to hold
and position if you lightly “stab” them
with a sharp hobby knife, apply the
glue then move into place.
A1
A2
A3
A7
A6
