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www.oldschoolmodels.com
Construction Manual
spars, sub-spars and other pieces in the following steps. Hold this
assembly flat by weighing it down on a flat surface as it cures. Once
cured, wick thin CA generously into the lower wing tab to help
strengthen the wood.
Step 5 - Wing Assembly (R1)
Once the R1 assembly has cured, it is
time to glue it in position. Make sure
that the piece is fully inserted into the
spar so it rests on the board. Also make
sure the piece is vertical, and once
aligned properly, glue it to the spar. Also, tack the rear tab to the
board with a drop or two of medium CA.
Step 6 - Wing Assembly (H1/H2 assemblies)
Locate both H1s and both H2s from
LP1 and LP2.
One H1 is glued to one H2 to form
a thicker piece. Make sure they are
properly aligned and clamp them
together until the glue cures. Do this for both sets to make two
identical H1/H2 assemblies.
Step 7 - Wing Assembly (R3)
Locate both R3 ribs from BP1 and
the H1/H2 assemblies from the
previous step.
Pre-cut into the aft of the R1 and R3 ribs are rectangular holes. The
tabs from the H1/H2 assemblies fit into these holes to help align
them. Note that when installed properly, you will not be able to
see the pre-cut hole in H1 as it will be facing the building surface.
Glue the H1/H2 assembly to R1. Then glue R3 in position, making
sure the H1/H2 tab is inserted into R3 and R3 is at a perfect 90° to
the plans.
Now do the same thing for the other side of the wing.
Step 8 - Wing Assembly (H3/H4 assemblies)
Next you’ll need two H3s from LP1 and
LP2, and four H4s from LP1.
Glue two H4s to one H3 as shown.
Make sure the angle of the H4 pieces
are the same, they are fully inserted into
the holes in H3 and they are perpendicular (90°) to H3.
Make two H3/H4 assemblies.
Step 9 - Wing Assembly (H3/H4 assemblies)
Each H3/H4 assembly is now glued into
place as shown here. Make sure the
assemblies are fully seated into the slots
cut into the ribs, and the edges of the
assemblies are flush with the rib edges.
Step 10 - Wing Assembly (D1 assembly)
Locate both D1s from LP1 and LP2. These
are glued together to make a thicker
piece. We recommend using epoxy for
this step and be careful not to let any
of the adhesive get into the slots as this
will cause problems when fitting in the following step. Weigh the
assembly down on a flat surface while the glue cures.
Step 11 - Wing Assembly (attach D1 assembly)
Once the glue has cured on the D1 assembly, its time to glue it in
place.
Test fit it first, making sure that
all of the slots are free from glue
and the D1 is touching the spar
along it’s entire length.
When satisfied, remove the D1
assembly, mix up a bit of epoxy
and glue the D1 assembly as
shown. Weigh the assembly down while the glue cures.
Step 12 - Wing Assembly (R4s)
Locate two R4s from BP1. These
are glued in place as shown,
making sure they are properly
aligned with the plans, and also
vertical to the building surface.
Also make sure to tack down the
rear tabs to the waxed paper to
hold it in position.
Step 13 - Wing Assembly (center section trailing edge)
Locate two of the 1/4” x 1/2”
x 36” balsa strips.
Starting from the center of the
wing, measure to the edge
of the R4 rib you attached
in the previous step. Cut a
length from one of the 1/4” x
1/2” x 36” strips and set the
remainder aside. Then do the
same for the other 1/4” x 1/2” x 36” strip.
DO NOT CUT BOTH LENGTHS FROM THE SAME PIECE OF WOOD
AS THIS WILL CAUSE PROBLEMS LATER IN THE BUILD.
These trimmed 1/4” x 1/2” strips will snugly slide into the slots pre-
cut into the aft of the R1, R3 and R4 ribs. Glue these in position,
making sure they are completely seated in these slots, as shown
here.
Step 14 - Wing Assembly (R5 and SW1)
If you’ve never built one of our
kits before, what you’re about
to experience is our
WEB-LOCK
construction technique. This
gives you the best chance of
properly aligning each rib with a
minimum amount of fuss, while
also giving you properly sized
sheer webs that lock everything into place.
Locate two R5s from BP2, and both SW1s from BP10.
Note that all of the SW pieces have a small circle engraved into
them. These circles help in orientation of the SW pieces, so make
sure each SW is positioned so the circle is closest to the root
(center) of the wing, and towards the plans (top of the wing).
Test fit SW1 in place, making sure it’s tabs completely slide into
the pre-cut slots in R4, also making sure to note SW1’s orientation.
When satisfied with the fit, remove the piece, then glue it in
position, making sure it is glued to R4 and the spar.
