Hangar 9 Ultra Stick 40 ARF Assembly Manual page 21


Step 5
Enlarge the holes in a 180-degree control horn that are 9/16-
inch (14mm) and 3/8-inch (9.5mm) from the center of the
servo horn.
note: If you are building the tail dragger version it
is not necessary to enlarge the hole that is 3/8-inch
(9.5mm) from the center of the servo horn.
Hangar 9 Ultra Stick 40 ARF Assembly Manual
note: If you are building the tail dragger version you
can skip step 6.

Step 6
Use side cutters to remove the unused arms from the servo
horn using diagonal cutters. Attach the pushrod connector to
the inside hole of the servo arm as shown. Make sure to use
threadlock on the nut so it doesn't vibrate loose.

Step 7
With the rudder servo centered, attach the arm to the servo.
With the rudder centered, use a felt-tipped pen to mark the
pushrod wire where it crosses the outside hole of the servo
horn. Use pliers to bend the wire 90-degrees at the mark.
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