4
b) With a fine applicator tip on your glue bottle, carefully place
2-3 drops of Thin CA glue directly onto the hinge in the gap. You
will notice that the glue wicks into the wood and the hinge. Quickly
turn the part over and apply 2-3 drops of glue to the other side of
the hinge. Continue this process until you have glued both sides
of all the aileron hinges. Keep a rag handy to wipe off any excess
Thin CA glue.
(If you get some glue smears on the plastic
covering, don't worry about them right now. Once all the hinges
are glued, you can go back to clean the smears off with a little CA
Debonder on a rag or paper towel.
c) Let the glue dry a minimum of 10 minutes before flexing the
hinges. At first, you might notice a little stiffness in the joint. This
will go away after the hinges have been flexed back and forth a
couple dozen times.
d) Repeat steps a, b, and c to hinge the other aileron.
VERY IMPORTANT: It's critical that you only make one application
of glue to each side of a CA hinge. If you apply additional glue to
the hinge after the first application of glue is already dry, the
second application of glue will merely puddle in the hinge gap and
make the hinge too stiff to operate properly. The excess glue can
also weaken the hinge! When properly glued, the portion of the
hinge that you see in the hinge gap should have a dry appearance,
not wet. A dry appearance indicates that almost all of the glue has
properly soaked into the hinge and wood.
A wet appearance
indicates that excess glue is puddled in the hinge gap. Excess
glue can become brittle with age and cut the hinge. Also, NEVER
USE CA ACCELERATOR (KICKER) ON CA HINGES!
AILERON HOOKUP
For this section you will need the assembled wing, 2 aileron servos
and appropriate chords (see radio notes at beginning of this book),
2 aileron pushrods (the short ones), 2 nylon control horns, and 2
nylon pushrod keepers.
❑
5) Looking into the aileron servo mount opening in the bottom
of the wing, you will find a short length of scrap wood with a string
tied to it. The other end of this string is tied to another piece of
scrap wood in the round hole near the center of the wing. This
string is used to pull the aileron servo chord through the wing, from
the servo mount towards the center section, in the following steps.
a) Working on one aileron at a time, plug a 6" servo extension
chord onto the end of your aileron servo wire.
Secure this
connection with a piece of plastic tape.
b) With a needle nose pliers, grap hold of the scrap wood in
the servo mount opening. Gently break the wood loose from the
wing structure, and then pull the wood and string a couple inches
out of the opening. Untie the string from the wood piece and retie
it securely to the end of your aileron servo chord.
c) Now break loose the other end of the string at the center of
the wing, and carefully begin pulling the end of the aileron chord
down into the servo mount opening and through the wing. You will
encounter obstructions as the servo plug bumps into the rib
structure inside the wing. When you do, don't pull too hard on the
string! You will find that by gently tugging back and forth alternately
on the string at the center and then on the servo chord at the
opening, that you can eventually work the plug past the obstructions.
Keep feeding the servo chord through the wing until the end plug
comes out the hole at the center of the wing. Remove the string
from the end of the servo chord and use a piece of tape to hold the
chord to the wing for now (so it can't fall back in the hole).
d) Mount the aileron servo in the wing, using the screws that
came with the servo.
e) Repeat these steps to install the other aileron servo in the
other wing panel.
❑
6) Note that there are two holes pre-drilled in the bottom of the
aileron, under the covering material, for the control horn mounting.
Puncture the covering material directly over these two holes to
accept the two "pegs" of the control horn. Use a sharp knife to