14
The rudder and elevators require a minimum of 80 in/oz of servo
torque. In the prototype Extras we used JR8101s and JR8411
servos with excellent results. Using servos with less torque
could cause a crash.
Computer Radio
Step 1.
If using a 7-channel or greater computer radio with
mixing (highly recommended), install four 24" servo extensions,
one on each servo. Tie a knot at each connector and tape to
prevent inadvertent disconnection. Also install the servo
hardware (grommets and eyelets) at this time.
Non-Computer Radio
Step 1.
If using a non-computer radio, install four 18" servo
extensions, one on each servo. Tape and tie a knot at each
connector to prevent inadvertent disconnection. Install one side
only of the two Y-harnesses to two of the servos, also tying knots
to prevent disconnection. The other two servos will be hooked up
to the Y-harness when installed in the airplane. One elevator
servo will need to be a reversed-direction servo.
Section 5: Installing the Rudder and Elevator Servos
• Fuselage
Not included
• (4) Servos (a minimum of 80 in/oz of torque)
w/mounting hardware
• (2) Small cable ties
Using a computer radio
• (4) 24" Servo Extensions (JRPA102)
Using a non-computer radio
• (3) Y-harnesses (JRPA133)
• (4) 18" Servo Extensions (JRPA099)
See “Radio Setup” section for more details on page 32
Note:
If using a non-computer radio, one of the
servos used for elevator must be a reversed-
direction servo.
Included in optional Hangar 9 Hardware Kit
• (2) 1" Heavy-Duty Servo Arms for Elevator
(HAN 3574 JR or HAN3575 Futaba)
• (2) 1
1
/
4
" Heavy-Duty Servo Arms for Rudder
(HAN3578 JR or HAN3579 Futaba)
• (4) 4
1
/
2
" 4-40 Linkages (HAN3556)
• (4) 4-40 Ball Links (ROC87)
• (2) Swivel Control Horns (ROC01B)
• Phillips screwdriver
• Small straight screwdriver
Parts Needed
Tools and Adhesives Needed