Note: For clarification purposes in this manual, we define a left
and a right control horn by simply looking straight down on the
horn, as shown. If the mounting pad (4 screw holes in each pad)
is facing left, it is a left control horn. If the pad is facing to the right,
it is of course a right control horn. Use this identification method
when following any instruction where control horns are being
mounted to the flight surfaces.
1) Each wing panel has two servo extension strings - one for each
servo - in place for your convenience.
These strings are
temporarily attached in each aileron servo bay and to the inside of
the root rib.
2) Working with the outboard aileron servo first, break away the
piece of balsa holding the servo extension string and pull out
enough string to attach the connector of your longest servo
extension (as previously mentioned, we used a 36" non-choked
heavy-duty servo extension in our models). Install the four rubber
grommets and eyelets that came with your radio system into the
servo mounting tabs. From the wing root rib, pull the extension
lead through the wing and out of the wing root rib. Note that we
suggest using a 1" or so piece of heat shrink tubing over the
extension and servo connectors to secure them. Plug the servo
connector into the servo extension and shrink the heat tubing.
The servo is now positioned into the servo bay, with its output
spline forward, toward the leading edge of the wing panel. Using
the mounting screws supplied with your radio system and secure
the servo to the mounting rails in the servo bay.
3) The inboard aileron servo is now mounted in place into the
inboard servo bay opening in exactly the same way as described
above. As mentioned earlier, we used 18" servo extensions.
4) Using the same instructions above, mount the remaining two
aileron servos in the opposite wing panel.
5) If you are using a single receiver, you now need plug the two
servo extensions from each wing panel into a Y-harness - one
harness for each wing panel. The Y-harness connectors are now
plugged into the appropriate aileron servo receptacles in your
receiver (with our Hitec receiver, these are Channel 1 for right
aileron and Channel 6 for left aileron - consult your radio system
manual for this information). Connect a switch and a charged
battery pack to your receiver. Turn on the transmitter and then the
receiver. Using the instructions that came with your radio system,
make sure the servos are moving in the correct directions and that
the aileron trim is in neutral. When the servos are properly set-up,
turn off the receiver and the transmitter and disconnect the aileron
servos from the receiver.
6) The two required aileron control horns are now mounted at the
bottom bevel leading edge locations of the aileron. Note that there
are two thick hardwood pads built into the bottom of each aileron
for control horn mounting. The outline of these pads can usually
be seen, by holding the aileron at an oblique angle to the light.
These hardwood pads measure about 7/8" x 2", offering plenty of
hardened area for mounting the control horns. In the photo below,
we have outlined one of these aileron mounting pads.
a) Starting with one of the wing panels, use a piece of masking
tape to lock its aileron in the neutral position. Install an aileron
servo output arm onto each aileron servo, with the arms both
pointed outboard toward the wing tip. The servo arms should both
9
LEFT
RIGHT