Hangar 9 Twin Otter ARF Assembly Manual page 30

Step 2
Use sidecutter to trim two arms from a large 4-way
servo arm, leaving two arms opposite each other.
Center the servo using your radio, then use a #1
Phillips screwdriver to install the arm as shown.
Step 3
Use a 5/64-inch drill bit in a pin vise to enlarge the
outer holes in the servo arm. This provides a servo
arm length of 5/8 inches (16mm) from center. Install
an EZ link in each of the holes.
30
Step 4
Place the servo in the radio tray in the upper fuselage
and mark the mounting hole locations with a pencil.
Step 5
Remove the servo and use a 1/16-inch drill bit in a pin
vise to drill the mounting holes. Apply a drop of thin
CA to each of the holes to strengthen the wood. Allow
the CA to cure without using accelerator.
Step 6
Use a #1 Phillips screwdriver and the hardware
provided with the servo to secure it to the radio tray
with the output shaft forward.
Step 7
Insert the 7-inch steel pushrod into the rudder cable
slot in the right-hand side of the rear fuselage. Use a
felt-tipped marker to mark the rudder.
Twin Otter ARF Assembly Manual