❏
5. Make a 45º bend in the pushrod wire just after the
threads. Make another 45º bend so the remaining pushrod
wire will pass through the pushrod connector. Slide a
1/16"
wheel collar
onto the pushrod wire. Cut a 1/2" [13mm]
length of medium fuel tubing and slide it onto the wire. Slide
the wire through the pushrod connector. Slide another piece
of 1/2" [13mm] long fuel tubing onto the wire, then a 1/16"
wheel collar. File a flat spot onto the wire. This provides a
better area for the set screw to bite and helps keep the
wheel collars in place. Center the rudder servo and tail
wheel and secure the position of the wheel collars against
the fuel tubing using two
4-40 set screws.
❏
1. Locate the plywood servo tray. Test fit the tray into
position, sanding as necessary for a good fit. Use 6-minute epoxy
to glue the tray to the formers and fuselage sides as shown.
❏
2. Install the rubber grommets and eyelets on your
throttle servo. Fit the throttle servo into the servo tray. Hold
the servo so the sides don’t contact the tray and drill 1/16"
[1.5mm] holes for the servo mounting screws. Remove the
servo and wick a few drops of thin CA into each of the four
holes. Mount the servo with the screws included with your
servos. Trim the throttle pushrod housing 1/16" [1.5mm] aft
of the servo tray.
❏
3. Install a brass screw-lock pushrod connector with the
4-40 x 1/8" cap screw on the throttle servo horn. Snap the
nylon retainer onto the pushrod connector post beneath the
servo horn.
❏
4. Assemble the 36" [910mm]
throttle pushrod wire
by
installing a nylon clevis and silicone retainer onto the
threaded end. Slide the throttle pushrod into its outer tube
(from the firewall).
❏
5. Bend the throttle pushrod as necessary to reach the
throttle arm without binding. When satisfied with the fit,
insert the pushrod through the screw-lock pushrod
connector on the servo. Connect the clevis to the throttle on
the engine, snap the clevis closed, then slide the retainer
in place.
❏
6. With the radio switched on, move the throttle trim and
control stick to the fully closed position by pulling them back
RETAINER
Throttle Servo Installation
18
