File end to
wedge shape
pieces in place with epoxy. HINT: Use masking tape to hold
these pieces to the wing TE, to aid in correct positioning.
SAND "FLATS" ON LE AND TE
2. Roughen the surface of the plastic bearing tubes
with 100-grit sandpaper.
3. Clean the torque rods and bearing tubes with alco-
1. Study the wing plan near the wing centerline. Note
that the center portion of the LE and TE must be sanded flat.
hol.
4. Find the two grooved, tapered balsa center trailing
edge pieces. Lay them on the plan, mark and cut them off to
match the plan for length and angle at the centerline.
2. Sand approximately 5/32" into the LE at the center-
line, and approximately 3/32" into the TE at the centerline.
(The flats will end up approximately 4-1/2" wide at the LE,
and 2" wide at the TE).
5. Trial fit the torque rods into the center TE pieces.
Determine from the plan where to cut the clearance notches,
which will permit the torque rod horns to travel freely. Also
cut small clearance notches in the wing TE. Note: The
torque rod horns must exit the TOP of the wing!
FIBERGLASS THE CENTER SECTION
6. Slide the plastic bearings toward the threaded end of
the torque rods, then use a toothpick to apply a small amount
of petroleum jelly to the ends of the plastic tubes (to help
prevent glue from getting inside and locking up the torque
rods).
7. Use 5-minute epoxy or thick CA to glue the plastic
bearing tubes into the grooves in the center TE pieces. Wipe
off any excess glue and allow it to harden.
NOTE; Because of the high stresses in the center of this
wing, Fiberglass reinforcement is REQUIRED. Please do
not omit this important section!
NOTE: If you have previous experience with applying
fiberglass, feel free to use your favorite method, providing
that it results in a strong bond between the glass cloth and the
wood. If this is your first time, we offer the following
suggested method, which is the fastest and easiest we have
seen.
8. Trial fit the trailing edge / torque rod assemblies
onto the wing trailing edge. Sand the center trailing edge
pieces slightly where they join, for a good fit. Glue these
1. Make location marks for the fiberglass reinforce-
ment cloth, 2" each way from the wing centerline.
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