Copyright 2014 Maxford USA
Page 10
of 24 pages
#S140627
16.
Position the rudder servo’s control arm on the rudder
servo at 90 degrees to the fuselage’s center line. Use
the hardware provided with your servo to secure the
rudder-servo’s control arm to the rudder servo’s
output shaft.
17.
Using a length of wire coat hanger or similar stiff
wire, pull the end of each steel cable out through each
of the slots in the tail from the area beneath the
observer’s cockpit opening.
18.
Gently pull the free ends of the rudder’s pull-pull
cables toward the back of the airplane and position
the rudder’s pull-pull cables against the rudder so each cable is centered in its slot in the fuselage;
mark this spot on the rudder where the rudder’s control arm needs to be mounted.
19.
Drill a 1/8-inch (3 mm) hole in the rudder for the pull-pull control arm at the marked location.
20.
As shown at the right, use the control-horn’s
hardware to center and secure the control-horn
assembly (complete with clevises, threaded rods
and locking nuts) at both sides of the rudder.
21.
Use scrap wood such as popsicle sticks and
masking tape to hold the rudder in a ‘straight-ahead’
position, aligned with the vertical stabilizers.
22.
Slide a crimp tube onto either of the two rudder
cables. Guide the cable through the hole in the
threaded rod and pull it ‘snug’ – be careful to not
pull so hard on the cable that the servo’s control arm
gets moved from its centered position.
23.
Guide the end of the cable back through the crimp
tube, adjust the size of the resultant loop of cable,
and use pliers to crimp the tube onto the cable.
24.
Pull the remaining rudder cable ‘snug’ on the other
side of the upper vertical stabilizer. Use pliers and a
crimp tube to attach the cable to its threaded rod.
25.
Snip off the rudder cable’s excess ends with a pair of
cutting pliers and discard the excess cable. If neces-
sary, adjust the threaded rods within their clevises to
‘fine-tune’ the tension on the cables and to center the rudder, then tighten the locking nuts on
each of the rudder’s threaded rods against their clevises and permanently anchor each threaded
rod in its clevis and locking nut with a few drops CA adhesive. Remove
the masking tape and scrap wood from the rudder.
26.
Drill 1/8-inch (3 mm) holes in each elevator at approx. 2
3/4
inches (7 cm) to the left and right
sides of the rudder. Mount a pull-pull control horn on each half of the elevator.
27.
Connect your elevator servos to your receiver. Setup your transmitter for “dual elevators.”
(NOTE: If your transmitter does not offer a mix for dual elevators, connect your elevator servos to
a 6-inch Y-harness and connect the Y-harness to the elevator channel on your receiver. If
available, use a reversed servo for either one of the elevator servos. Step 34 on the following page
explains what to do if a reversed servo is not available.)
28.
Use your receiver to center both of the elevator servos.
2
3/4
-inches
(7 cm)
1
3/16
-inches
(3 cm)
Slot in the top-rear of the fuselage
