4
covering material. With slow-drying epoxy, you will have plenty of
time to clean up all the glue smears with a paper towel soaked in
rubbing alcohol. Also, if possible get someone to help you with this
proceedure. An extra set of hands makes the job much easier!
While one person is holding the wing panes tightly together, the
other person can wipe off the excess glue.
WING ASSEMBLY, PART II: Installing the aileron servos
For the following steps you will need these parts:
•
1 - The Wing Assembly
•
2 - Aileron Servos (not supplied)
•
1 - Servo Y-Harness Chord (not supplied)
Note: On the top side of the wing, on each side of the center joint,
you will find two round holes. Inside each hole you will find a short
length of wood with a string tied to it. Likewise, inside the aileron
servo bays on the bottom of the wing you will find similar wood
pieces with strings tied them. These are the other ends of the
strings you saw at the center of the wing. These strings will be
used to pull the aileron servo wires through the wing panels in the
following steps.
Working on one wing panel at a time...
❑
1) Start at the center hole and gently break the wood piece loose
from the wing structure. Pull the wood piece and the string a few
inches outside of the wing. Remove the wood piece from the string
and disgard it. Tie the end of the string securely to the end of one
of the two servo leads of your Y-Harness Chord, as shown.
❑
2) Go to the aileron servo bay on the same side of the wing and
break that wood piece loose from the wing structure. Carefully pull
the string and the attached Y-Harness lead through the wing panel,
until the plug on the end of the wire comes out of the opening in
the servo bay. Be sure you don't pull all of the Y-Harness inside the
wing - leave the other two plugs of the Y-Harness outside at the
center of the wing.
Note: You may occasionally feel like the wire has become stuck
inside the wing. This is simply the plug on the end of the servo
wire hitting the side of the holes in the wing ribs. Gently work the
string back and forth from both ends until the plug fits through the
hole. Sometimes the servo plug comes through all the ribs the first
time without getting hung up, and other times it seems like it gets
hung up on every rib. Be patient and don't try to force it. The holes
in the ribs are large enough to get any common servo plug
through. Sometimes it helps to hold the wing panel vertically and
shake it slightly while pulling lightly on the string.
❑
3) Once you can get a grip on the Y-Harness plug at the servo
bay, connect your aileron servo to the plug. Tape the connection
so it can't ever come loose inside the wing. Then untie the string
from the wire and dispose of it.
❑
4) Now feed the wire back inside the wing by carefully pulling on
the other end of the Y-Harness where it exits the top of the wing.
Keep pulling the wire back towards the center section until you can
fit the aileron servo into the plywood servo mount that is built into
the wing panel. Note that the servo should be positioned so that
its output arm is at the rear end, toward the trailing edge of the
wing. Use a small drill bit to drill pilot holes in the servo mount for
the servo mounting screws. Use the screws supplied with your
radio system to mount the servo in place on the servo mount.
Repeat these steps to mount an aileron servo in the other side of
the wing.
