All of the parts are cut out, making a kit.
The wing is
ready for top
The completed tail
feathers with balsa
inserts are shown.
Photos by the author
Make sure you create a left and right panel.
I like to build both at the same time to avoid
For each panel, pin down the bottom sheeting
on the building board and cut tapered washout
shims for the TE. These shims are not shown on
the plans and should be 1/4-inch tall and tapered
to a point roughly 16 inches long.
Pin this washout shim under the TE, 1/4-inch
tall at the wingtip, to ensure that approximately
3° of washout will be built into the wing panel.
Glue the root and tip ribs, plus the LE cap strip
to provide the gluing surface for the balsa LE
and top sheeting. Add all of the Depron spars
that taper from the root to the tip.
Stick a pin through the aileron corners to
mark their outline so they can be located
after the wing panel is closed up with the
top sheeting. This will create a reference
point for cutting them free later.
Build up the ailerons with the Depron
and balsa ribs and the balsa spar sections
that will be for hinging purposes. Use
wood glue to attach the 1/2-inch balsa LE,
and the wing is ready for top sheeting. I
like to cut an oversized piece of Depron
foam and then use Gorilla Glue to adhere
it. Gorilla Glue works well because it
dries slowly and expands to fill any voids.
Spread the glue on all of the top
surfaces and weigh the top sheet down
well to hold the sheeting in position
until the glue cures. Old issues of Model
Aviation distribute the weight well.
When dry, remove the panels from the
board, shape the LE, and sand the edges.
Add foam sections for the wingtips and
carve and sand them to shape.
Locate the marks outlining the ailerons,
cut them free, and prepare them for
installation by shaping the LE and making
the hinging slots. The wing panels and ailerons
are now ready for covering.
The tail is as simple as it gets. Cut out and
glue in the balsa inserts. Sand both vertical and
horizontal stabilizers flush and smooth. Cut off
the elevators and install the U wire joiner.
Round the edges and make hinging slots for the
elevators. They are now ready for covering.
On smaller models, I prefer to use 3/4-ounce
fiberglass cloth and Minwax water-based
polyurethane. However, the model lends itself
49 Model Aviation JANUARY 2016 www.ModelAviation.com