4
II. Assembly
Follow the assembly steps. We have illustrated each
step and provided text to explain the process.
Main Wing Assembly
1.
Note that each wing panel is actually two pieces with
an inner section and a tip section. These two sections
for each wing panel are joined as follows. On the top of
the wing, carefully cut the covering away from between
the ribs where the inner and the outer panel join. Also
remove the small balsa wedge in-between the ribs. Put
a light coat of 5 min. epoxy in the resulting slot. Bend
the outer panel upward so the two ribs meet, forming
an angle that is called “dihedral”. Wipe off any excess
epoxy and hold in place while the glue sets.
2.
Locate two dihedral plywood wing joiners. Glue two
wing joiners together with 5-minute Epoxy.
3.
After the epoxy has cured, draw a center line on
the wing joiner.
4.
Before gluing the two wing halves, dry-fit the wing
joiner into the slots in both the right and the left inner
wing halves. Sand if needed for good fit. (Note: the wing
is supposed to be joined at an angle; this angle is called
dihedral.) When satisfied, apply a thin coat of epoxy on
all sides of only one half of the wing joiner (see drawing).
Insert the glued
half of the wing
joiner into the slot
in the left wing
panel, stopping at
the center line.
Make sure you
wipe off any excess epoxy with a paper towel. Let cure.
5.
Lightly coat epoxy on all sides of the other half of
the wing joiner (exposed part) and the exposed balsa
inner edges of both wing panels (called the wing root).
Slide the wing halves together, ensuring that they are
accurately aligned. Firmly press the halves together and
wipe off any excess epoxy. Let the epoxy cure while
holding the wing together in proper alignment.
