User Manual

Section 9 – Rudder Linkage Installation
23
Step 9
Screw a molded swivel link onto each side of the
8-32 threaded rod so the top of the link is 1
1
/
4
" from
the surface of the rudder.
Step 10
Hinge the rudder using the same technique as with
the aileron and elevator.
Step 11
Remove the stock servo arms and replace them with
heavy-duty 1
1
/
4
" arms. The arms need to be
positioned as shown.
Step 12
Screw a 4-40 ball link 5 to 6 turns onto a 5" long
4-40 linkage. Screw the opposite end of the linkage
into the swivel control horn that was installed in
Section 6. Adjust the length until the hole in the ball
link lines up with the outer hole in the servo arm
when the rudder is at neutral and the arm is centered.
Step 13
Using the 4-40 screws and nuts included in the
Hangar 9® package, attach the ball link to the outer
hole in the arm. The correct sequence is 4-40 screw,
ball link, standoff, servo arm and 4-40 nut. Be sure
to use threadlock.
Step 14
Repeat Step 9 through Step 13 for the other
rudder servo.