❑
4) Glue the laser-cut plywood Wing Bolt Reinforcement Discs
in place on the bottom of the wing, carefully aligning the 1/4" holes
in the discs with the holes in the wing before the glue dries. Make
sure there is no excess glue inside the holes. If necessary, run a
1/4" dia. drill bit through the holes after the glue is completely dry.
❑
5) Trial fit the Fiberglass Air Scoop on the bottom of the wing.
Notch the flange of the air scoop slightly to clear the plywood Wing
Bolt Reinforcement Discs.
Glue the Fiberglass Air Scoop in place using the same methods
you did for the other fairings.
Note: If you are using epoxy glue for this step, like we did, you will
want to remove the covering material from the bottom of the wing
where the air scoop sits. To make that easier, there is a full-size
pattern on page 26 of the area of covering that needs to be
removed. Cut out the pattern and use it to mark out the area of
covering that needs to be removed.
❑
6) Remove the wing from the fuselage and locate the two
fiberglass Wing Bolt Guide Tubes.
a) Fit the fiberglass guide tubes into the wing bolt holes in the
air scoop. The guides should slip into the holes and go all the way
down against the surface of the wing and around the head of the
plywood wing bolt reinforcement discs. If the holes in the bottom
sticking plastic-to-plastic, are also the hardest to clean up for a
good looking result. Canopy glues are easy to clean up with water
and will hold well for a long time, but with the constant flexing of
taking the wing on and off they make work loose eventually. For
that reason mainly, we prefer to glue the plastic fairings directly to
wood using slow-drying epoxy, after first peeling the covering off
the fuselage where the fairing sits.
Epoxy Method: Hold the Molded Plastic Left Wing Fairing in place
on the fuselage. Use a fine-point felt-tip pen to mark the location
of the fairing onto the fuselage side. Then, set the fairing aside and
use a sharp #11 hobby knife to cut through the covering material
about 1/16" inside the marked line. Be very careful to cut the
covering material only - do not cut deeply into the balsa wood
structure underneath! Peel the covering away in the fairing area.
Then, take off the pen lines with a rag soaked in rubbing alcohol.
Prepare the other side of the fuselage in the same manner.
Glue both plastic wing fairings in place with slow-drying epoxy
glue. Clean up any major oozing of glue with a rag or paper towel
soaked in rubbing alcohol. After you get both fairings glued and
sitting in place, then, bolt the wing onto the fuselage which will
clamp the fairings in position (protect the top surface of the wing
with wax paper or plastic wrap to keep any oozing epoxy from
sticking to the wing.). Double check to make sure the fairings are
sitting in perfect position before tightening the wing bolts. Use a
couple small pins, if necessary, to keep the fairing tight against the
fuselage. Once again, clean up any glue smears with an alcohol
soaked rag and then let it dry.
❑
3) Use the same basic procedure to glue the molded plastic
Wing Leading Edge Fairing in place on the bottom of the wing.
a) Set the leading edge fairing in place on the bottom of the
wing. Align it with the fuselage. Use a fine-point felt-tip pen to
mark the location of the fairing on the wing surface. Then, remove
the fairing and wing from the fuselage.
Remove the covering
material from the bottom of the wing approximately 1/16" inside of
the marked lines.
b) Now, permanently glue the leading edge fairing in place on
the wing with epoxy glue. Let dry.
13