❑
3) Next we install the servo wires inside the wing panels.
a) Plug a 12”-24" long servo extension chord onto the end of
the aileron servo wire. Wrap the connection with a piece of plastic
tape to insure that it won’t come unplugged.
b) Reach into the aileron servo bay and gently break the small
balsa stick loose from the wing structure. Pull it out and unwrap
the extra string. Remove the string from the wood. Tie the end of
c) Break loose the balsa stick that has the opposite end of the
string tied to it - from its location at the inboard end of the wing
panel. Begin carefully pulling the string and the aileron chord
through the wing towards the end of the wing panel. You may oc-
casionally 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 one of the holes in the wing ribs. Gently work the string back
and forth from both ends until the plug slips through the hole.
Sometimes the servo plug comes through all the ribs the first time
without getting hung up, and other times it seem 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.
d) When the servo plug appears in the round hole, reach in
with a narrow needle nose pliers or a hemostat and grasp the plug
and pull it out of the hole. Pull the servo lead fully out of the hole,
leaving very little slack in the aileron servo bay. Remove the string
from the servo plug and temporarily tape the plug to the wing sur-
face so it can’t fall back inside the wing. Repeat this step to pass
the other aileron servo wire through the other wing panel.
❑
4) Fit the plastic Aileron Servo Hatch, with servo mounted, in
place in the wing. Check carefully to make sure the servo arm
can operate properly without binding on the wing structure. Use
pieces of masking tape to hold the servo tray in final position.
Using the pre-drilled mounting holes in the servo tray as your
guide, drill four 1/32” dia. pilot holes through the sheeting in the
bottom of the wing. Then mount the hatch using the provided
M2.6 x 8mm PWA Screws. Repeat this step to mount the other
servo hatch in the other wing panel.
❑
5) From the kit contents locate two Nylon Control Horns, four
M2 x 20mm Mounting Bolts and two wire Aileron Pushrods
(threaded at one end, “Z”-bend at the other end), and two metal
R/C Links.
You will likely need to use a small drill to open the holes in the
servo arm in order to accept the .070” dia. pushrod wire. Slip the
“Z”-bend end of the wire pushrod into the outer hole in the servo
arm and then install the arm on the servo with the arm facing 90
O
down into the pushrod fairing of the servo hatch, as shown (this
is the ideal “neutral” position for the servo with the radio system
on). Thread a metal R/C Link halfway onto the aileron pushrod,
allowing an equal amount of adjustment in either direction.
Now is a good time to check the movement and centering of the
aileron servos with your radio system. Connect the aileron servo
chords to the Y-Harness and plug it into the aileron receptacle in
your receiver. Connect the battery and turn the system on. First
check for the correct direction of travel. Reverse the servo direc-
tion on your transmitter if necessary. Next, check the centering
of the servo arms, with the trim lever in neutral. Remember that
the output arm should be facing directly into the molded fairing in
the servo hatch, at 90
O
to the servo. Take off and reposition the
output arm as needed to achieve this. With these two issues ad-
dressed, install and tighten the servo output arm screws in both
servos. Carefully re-install the servo and hatch back into the wing
panel and secure it with the screws.
Next, use a couple of pieces of masking tape to hold the ailerons
in neutral position for the next step.
6
the string securely to the end of the
servo wire plug. Tie it in such a
manner that the plug will be pulled
narrow end first through the wing.
Wrap a piece of tape around the
plug to keep the string in place.