3.21 When satisfied, fold the wing back out and coat the trailing edges of the wing top and bottom and the top of the
hinge strip with contact cement. Also apply contact cement to the top of the spar and the top of the wing between the alignment
strips. When ready, refold the wing and start seating the spar in between the alignment strips the full length of the wing. Once
the spar is seated, start "tacking" the wing down at the trailing edge starting at the wing tip and working your way toward the
root. Be sure to "seat" the spar in between the alignment strips first, then concentrate on the trailing edges.
GLUE FROM THE WING TIP TOWARD THE ROOT - DO NOT START GLUING FROM EACH END OF THE WING HALF - THIS WILL RESULT IN A WRINKLE
IN THE MIDDLE! When you have finished the trailing edge, press it down to make a good bond along the hinge strip and at
the root. Inspect the leading edge at this stage to see if the scores are working properly. You may need to get out the hair
dryer and "persuade" them a little more.
3.22 Repeat the folding and gluing process above on the left wing.
3.23 Apply contact cement to the inside of the wing tips
and to the tips of the spar and, when ready, glue them
together, allowing the "square" part of the wing bottom to glue
to the rounded wing tip on the wing top. Press the square
bottom to the rounded tip, allowing about 3/16" of the glue to
bond around the tip edge. Using a pair of sharp scissors, trim
the excess material from the square part of the wing tip up
next to the rounded part to create a nice, rounded wing tip.
GLUE EDGES 1/4"
TOP RIGHT
WING TIP
CUT OFF
EXCESS WITH
SCISSORS OR
SHARP HOBBY
KNIFE
TOP RIGHT WING
FIGURE 23 - GLUE AND TRIM WING TIPS
INSTALL THE TORQUE RODS
3.24 Locate the torque rod assemblies and identify them
left and right. The torque rods have a long end and a short
end. The short end of the assembly sticks into the aileron and
the long end protrudes up from the center section of the wing
and connects to your servo control rods. Be sure to have the
long end sticking up from the wing. Otherwise, you will install
them upside down!
3.25 Install the right torque rod by first measuring where
it will enter the aileron hinge. Place the rod with the servo end
about 1/2" from the center of the wing and mark on the inside
hinge of the aileron where the torque rod will enter. Using a
3/32" drill bit, drill into the aileron hinge to receive the torque
rod and install it in the aileron. The torque rod should ride
inside the hinge and the torque rod bearing tube should be
positioned at the trailing edge of the wing outside of the
aileron hinge area. The wing wrap will hold the torque rods in
place later.
TORQUE
ROD-TUBE
RIGHT AILERON
LONG END OF
TORQUE ROD
POINTSUP
SHORT END OF
TORQUE ROD
TORQUE ROD
GOES INSIDE
FLUTE
RIGHTWING BOTTOM
CROSS SECTION
AILERON ASSEMBLY
FIGURE 24 - INSTALLATION OF TORQUE RODS
1/2"
AILERON HINGE STRIP
3.26 Install the left torque rod assembly in the same manner.
17
