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35% Extra 300 ARF Assembly Manual
apply some CA to harden the wall. Once CA is dry, mount the
servo.
6. Prepare the servo linkage.
7. Mount the control horn. Adjust the height to 1 7/8 inch
from the rudder hinge line to the center of the pivot point on
the horn.
8. Attach the ball link to 1 1/2-inch servo arm.
9. Power up the servo by connecting to the receiver and
with radio sub-trim at 0, mount the arm towards the bottom
of the aircraft and parallel to the hinge line.
10. Apply threadlock to the servo center screw and
mount the servo arm.
11. Mount the servo arm setscrews.
12. Using a Hangar 9 Pro-Link Wrench, adjust the length
of the linkage so when the servo arm is parallel to the rudder
hinge line, rudder is at center.
