D 9. From the six 3/32" x 3/8" x 36" balsa sticks,
cut cap strips to fit between the trailing edge
sheeting and leading edge sheeting. Glue these
cap strips to the top and bottom edges of all
exposed ribs as shown on the plan.
D 10. Temporarily install the main landing gear
wires into the wing. Now fill the unused portion
of the slot in the landing gear block with pieces
cut from the 3/16" x 3/16" balsa stick. Glue
these pieces in place.
D 11. Temporarily secure the landing gear in
place with the nylon straps and #2 x 3/8"
screws as shown in the landing gear detail
drawing and the cross-section drawing of W-2
on the wing plan.
AILERON TORQUE RODS
D 1. Sand the short end of the torque rod with
320 grit sandpaper.
D 2. Roughen the surface of the brass bearing
tube with 100 grit sandpaper.
D 3. Clean the torque rod and bearing tube with
degreasing solvent or thinner.
D 4. Apply a small amount of soldering flux to
the short end of the torque rod, push on the
brass tube which has been flattened at one end
and rotate it to the proper position.
D 5. Heat the brass tube with a soldering gun or
iron while applying solder to the joint. When
the assembly becomes hot enough the solder
will melt and flow freely into the joint. Then
remove the heat and allow to cool without dis-
turbing.
D 6. Drill holes in the flattened portion of the
brass horn for the clevis pin (Note: The proper
size drill bit to use here is a #53 bit, available
at most hardware stores. You may, however,
use a 1/16" bit, but a slight amount of "slop"
may result). After drilling, carefully remove
the sharpness from the edge of the holes with
an Xacto knife.
D 7. Repeat the above process for the other torque
rod. You should now have a right and a left
torque rod.
D 8. Find the two grooved, tapered balsa center
trailing edge pieces, and trial fit the torque
rods into them. Determine from the plan where
to cut the clearance notches in the center trail-
ing edges and the wing trailing edge, which
permit the torque rod horns to travel freely.
Note: The torque rod horns must exit the
TOP of the wing!
D 9. Slide the brass torque rod bearings toward
the brass horns, then use a toothpick to apply
a small amount of petroleum jelly to the ends
of the brass tubes. This will help prevent glue
from locking up the torque rods.
D 10. Use 5-minute epoxy to glue the brass torque
rod bearings into the grooves in the center
trailing edge pieces. Wipe off any excess glue
and allow to harden.
D 11. Trial fit the trailing edge/torque rod assem-
bly onto the wing trailing edge. Sand the center
trailing edge pieces slightly where they join,
for a good fit. Glue these pieces in place with
epoxy. Also check to make sure the top and
bottom of the TE pieces line up with the top
and bottom of the wing.
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