26
Hangar 9 Sundowner 36 ARF
2. Center the control horn on the mark made in the
previous step. The holes in the control horn will align with
the hinge line. Use a felt-tipped pen to mark the locations for
the two mounting screws on the aileron.
3. Use a pin vise and a 5/64-inch (2mm) drill bit to drill
the holes for the control horn mounting screws.
4. Use two 2mm x 12mm machine screws and the
control horn backplate to secure the control horn to the
aileron. Use a #1 Phillips screwdriver to tighten the screws.
Be careful not to crush the underlying wood when installing
the control horn.
5. Insert the Z-bend of the 2-inch (52mm) linkage in
the hole of the servo arm that was enlarged in the previous
section of this manual.
6. With the radio on and the aileron servo centered,
thread the nylon clevis on the pushrod. Thread the clevis
on enough so the aileron is centered when the clevis is
connected to the outer hole of the control horn shown below.
Drawing not to scale
Attach clevis
7. Check the operation of the aileron using the radio
system. If you find the pushrod or servo horn binding on the
servo cover, use a hobby knife with a #11 blade to slightly
trim the cover to eliminate this binding.
8. Repeat steps 1 through 7 to install the remaining
aileron control horn and linkage.
9. Remember to turn off the radio system at this time to
avoid running the batteries down.