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COMPLETED ELEVATOR PUSHROD.
Now that the pushrod is in place, I connected the clevises to each elevator control horn using the
supplied Sullivan clevises and keepers. I connected the other end of the pushrod to the servo also
using the supplied Sullivan clevis and keeper.
The rudder is setup with a pull pull cable system. The included pull pull cables require you to solder
the threaded ends to the wire. I deviated from the kit and decided to use a Dubro 4-40 Pull Pull
system instead. I have used them before with much success. They rely on a crimped connection
rather than a soldered connection. Again I used a couple pieces of push rod tubes to help route the
cables though the fuselage. Each end of the cable is attached to their respective horns with the
supplied Sullivan Clevises.
The throttle linkage is setup next. I installed the pushrod tube in the firewall after locating and drilling
a hole that was inline with the carburetor. I used some thick CA to hold the tube in place on the
firewall. It will be necessary to install a plywood support to the front of the servo tray to keep the
throttle pushrod from flexing too much. This is fastened to the servo tray with thick CA. Next I slid the
plastic nyrod through the tube and attached a plastic clevis to the carburetor and a used a Z-bend to
attach to the throttle servo horn. I backed off the throttle stop screw on the engine as I would not be
using it. With my Futaba 9CAP (and most other computer radios) I was able to adjust the servo end
points accordingly.
THROTTLE AND THROTTLE KILL
SERVOS INSTALLED ON SERVO
TRAY. NOTICE THE PLYWOOD
MOUNT FOR THE MICRO SERVO.
The last servo to connect is the throttle kill servo. This will not be necessary if you decide to install a
glow powered engine. Because I decided to use the Zenoah G23, it will be necessary to install some
kind of throttle kill mechanism. I could setup my throttle servo to choke off the carb much in the same
fashion as with a glow engine, but with the potential for a gas engine to run much longer on a tank
of fuel if the the throttle servo fails, I thought I should add some backup protection. I installed a
throttle kill switch to one of the engine stand off spacers. A second pushrod was installed through
the firewall and the other end was attached to the HS 81 micro servo. I set this servo up on channel
6 with an on/off switch to activate it. It was necessary to adjust the end points on this channel
because the servo did not need to move that much to activate the micro switch.
At this time I installed the 4.8 volt 600 mAh battery back for the smoke system to the servo tray just
in front of the servos. I applied a piece of double sided foam tape to the top of the battery and placed
the receiver on top of the battery. I then attached both of them to the servo tray with a zip tie. I
installed the 4.8 volt 1100 mAh battery right under the servo tray in the same position as the receiver.
There are two switch harnesses installed on this model. There is one that goes through the fuselage
side with a Dubro Quick Switch Charge Jack for the receiver, and the other is a Dubro Switch
only assembly that is installed under the cowl to provide a manual throttle kill. This switch is also
important because it allows you to ensure that the engine can not be accidentally started.
IGNITION KILL SWITCH INSTALLED
IN THE COWL.
THE IGNITION KILL MICRO SWITCH
IS MOUNTED ON THE ENGINE
STANDOFF. A PUSHROD
ACTIVATES THE SWITCH THROUGH
THE FIREWALL.
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