Dynaflite GPMA0525 - Manual (Page 17)

❏
1. Cut a 1/8" notch in rib 1 of both wing panels
between the top and bottom spar to
accommodate the die-cut 1/8" plywood wing
joiner (or your homemade joiner if you are
building in dihedral). Test fit the joiner in one wing
half, then the other. Sand the joiner and adjust the
notch in the ribs as necessary for a good fit.
Perform step 2 only if you are building your
wing flat.
❏
2. Test join the wing halves with the wing
joiner. Lay your wing flat on your workbench so
the aileron torque rods are over the edge. If
necessary, use your bar sander and 80-grit
sandpaper to sand the ends of the wing for a
good fit.
Perform step 3 only if you are building your
wing with dihedral.
❏
3. Test join your wing halves with your homemade
wing joiner. Use your bar sander to sand the ends of
the wing as necessary so they will fit at the
correct angle.
❏
4. Use a piece of wire or something similar to
thoroughly apply 30-minute epoxy to the spars
inside one wing half and to the top and bottom
edges of one half of the wing joiner. Slide the
joiner into the wing between the spars. Be certain
the joiner is centered between the spars. Wipe
away excess epoxy and allow the assembly
to cure.
❏
5. Lay a piece of Great Planes Plan Protector on
your workbench. After the epoxy from the
previous step has fully cured, apply 30-minute
epoxy to the spars inside the other wing half, the
top and bottom of the other end of the joiner and
to the sheeting on the end of both wing halves.
Proceed quickly to the next step.
❏
6. Join both wing halves and wipe away excess
epoxy. Lay your wing on the plan protector on
your workbench. If you are building your wing
flat, place weights on top of your wing to keep it
from moving and to hold it down. If you are
building your wing with dihedral, use balsa
blocks or something similar to raise both wing
tips 3/8". Make sure the trailing and leading edges
align. Do not disturb your wing until the epoxy
has fully cured.
❏
7. Lightly sand the center section of your wing to
blend the two halves together. Finish rounding the
leading edge as shown in the cross section on
the plan.
❏
8. Glue the 1" x 14" strip of glass cloth over the
seam between the two wing halves. You may use
1/8" Notch
17