Hangar 9 35% Extra 300 ARF (3 Boxes) - Manual (Page 11)

11 35% Extra 300 ARF Assembly Manual
Elevator Servos Installation
Required Parts
Elevator panel
Ball link (2)
Control horns (2)
Elevator pushrod (2)
Required Parts (not included)
JR 8911HV or similar digital servo (2)
JR 1 1/2-inch servo arm (2)
JR heavy-duty servo extension, 36-inch (2)
Required Tools and Adhesives
Pin vise
Thin CA
Phillips screwdriver: #1
Drill bit: 1/16-inch Masking tape
String (Dental floss)
3/32-inch ball driver
Note: It is important to go over the covering with
covering iron and make sure all the seams are sealed.
 1. Prepare the servo by installing the rubber grommets
and brass eyelets.
The servo needs to be installed in such a way that the output
shaft is towards the leading edge of the stab. The servo arm
needs to be 1 1/2 inch. If using a JR aluminum servo arm,
this would be the third outermost hole.
 2. Mount the servo and mark the servo mounting
holes.
 3. Using a pin vise, drill the servo mounting screw.
 4. In order to harden the servo mounting holes in
the bays, mount the servo screws, back them out and
apply some thin CA in the hole. Wait until CA is dry before
installing the servo.
 5. Secure a 36-inch JR Heavy-Duty extension using a
string or commercially available safety connector.
 6. Apply a piece of masking tape over the knot holding
the leads.
 7. For removable stab setup, do not connect the
extension to the elevator servo, instead run a 36-inch
extension through the fuselage and exit from stab mounting