13
EN
Extra 300 X 120cc
11.
Thread the socket head cap screw into the hole of the
arm that is 1
3
/
4
inches (44mm) from the center of the
servo arm.
16.
Adjust the linkage to center the aileron while keeping
the servo centered with the radio system. Use a Pro-Link
Wrench (HAN3558) to make the adjustment process
easier.
17.
Repeat steps 6 through 16 to install the root aileron servo.
Do not use a servo extension for the root aileron servo.
18.
Repeat the previous section to install the aileron servos in
the opposite wing panel.
12.
Secure the ball link to the servo arm using a 4-40 lock
nut. Use a 3/32-inch hex wrench and 1/4-inch nut driver
to tighten the hardware.
13.
Center the tip aileron servo using the radio system.
Attach the servo arm parallel to the hinge line. Make any
adjustments to the alignment of the servo arm using the
sub-trim features of your radio system.
14.
Thread the 3-inch (76mm) aileron linkage 10 turns into
the ball link on the servo arm. Thread a second ball link
10 turns on the opposite end of the turnbuckle.
15.
Attach the second ball link to the tip aileron control horn
using a 4-40 x 5/8-inch socket head cap screw and a
4-40 lock nut. Use a 3/32-inch hex wrench and 1/4-inch
nut driver to tighten the hardware.
11.
12.
13.
14.
15.
16.
The elevator servo installation follows the same techniques as the aileron servos. This section has been
condensed, and any information that is not covered can be found in the previous sections regarding the
installation for the aileron servos.
1.
Prepare and glue the control horns into position in the
elevator.
2.
Prepare the stabilizer for the mounting of the elevator
servo. Mount the elevator servo in the stabilizer with the
output shaft facing toward the elevator. Make sure to
route the servo lead along the side of the elevator servo
when installing it into the opening.
3.
Attach the ball link to the servo arm 2 inches (52mm)
from the center of the servo arm. Make sure to install the
conical washer between the ball link and servo arm. Use
a 4-40 x 5/8 socket head cap screw and 4-40 locknut as
the hardware for this step. Use a 3/32-inch hex wrench
and 1/4-inch nut driver to tighten the hardware.
1.
2.
3.
ELEVATOR SERVO INSTALLATION
