15
the OFF position. This will terminate the wireless link between
both transmitters. If additional training will be performed
again, return to step 1 above to re-establish the wireless link
between the teacher and student’s transmitters.
ELEVON MIXING FUNCTION
The TTX404 includes an elevon mixing function, which can
be turned on or off. “Elevon” control consists of a mixture
between the elevator and aileron channels, and is useful for
certain types of aircraft (such as a fl ying wing). To activate
or de-activate elevon mixing:
With the Tx power switch off, move the right stick to the top-
right or bottom-right corner. While holding the stick in this
position, turn the Tx power switch ON.
If the LED fl ashes once, accompanied by a single audible
tone, the elevon mixing function will now be OFF. To
change the setting, turn the Tx power switch off and repeat
the process. When the LED fl ashes twice, accompanied
by a single audible tone, the elevon mixing function will
now be ON.
WARNING!!
If activating the elevon function,
be sure to check that all controls move in the
proper direction for the model.
BIND THE RECEIVER
TO THE TRANSMITTER
For proper operation it’s necessary to “bind” the Tx and Rx
together electronically. This ensures sole communication
between the two, and prevents other transmitters from being
able to control the receiver.
1. Turn on the Tx.
2. Apply power to the Rx.
3. If the Rx LED fl ashes once and then stays on, the
Rx is already bound to the Tx and you can skip to
the next section. Otherwise, insert a small diameter
screwdriver through the hole marked “BIND” and press
the pushbutton until the Rx LED glows red and then
turns off after about one second.
4. Release the “BIND” button.
5. If the binding is successful, the Rx LED will fl ash once
and then remain ON.
6. Test for proper Tx / Rx functionality in the next section.
If the radio doesn’t appear to have become properly
binded, repeat steps 1-6 above.
SYSTEM CHECK & OPERATION
WARNING!
During all pre-fl ight preparations
with the aircraft on the ground, make sure the
throttle stick remains at the minimum position
and do not stand the Tx upright on the ground. Carefully
lay the Tx on its back on the ground to prevent it from falling
over and possibly dislodging the throttle stick from the low
position which would create a safety hazard. Make sure all
devices are properly mounted inside the model, and all wiring
connections are solid to prevent them from easily becoming
dislodged during normal fl ight. It’s best to check the system
with the propeller removed from the aircraft.
1. Once all connections are made, check the general
operation of the radio and all other components before
attempting a fl ight.
2. Move the Tx throttle stick to the minimum (idle)
position.
3. Turn on the Tx, and then the Rx.
4. Make sure all controls are operating in the proper
direction. If any servo is turning in the wrong direction,
change the position of the reversing switch for that
particular channel.
5. With both sticks at center position, move the trim levers
for the aileron, elevator, and rudder channels so each
respective control surface is perfectly aligned with the
main surface. For example: When the aileron trim lever
is in the center position, it’s best that the trailing edge of
the aileron is aligned with the trailing edge of the wing
itself (not above or below the wing’s trailing edge).
6. Make sure that movements of the throttle stick result
in an equal adjustment of the throttle in the model.
Depending on whether the airplane is electric or glow
powered:
a. Electric: confi rm that when the throttle stick is at
maximum position the electronic speed control gives
the appropriate indications (LED and/or audible
indicators) for full forward fl ight. And, when the
throttle stick is at minimum position the electronic
speed control gives the appropriate indications for
“off” or no motor rotation.
b. Glow: confi rm that when the throttle stick is at
maximum position the mechanical linkage to the
engine allows the engine to be at full throttle. And,
when the throttle stick is at minimum position and
the throttle trim lever is moved to minimum position,
the engine stops completely.
7. Perform a “range check”. The “range” is the safe
operating distance from the Tx to the Rx, and should
be as far as you can clearly see the model. With the
assistance of another person, place the aircraft on the
ground and walk 100 feet (30m) away from the model.
With the Tx pointed directly at the model, operate
the transmitter’s controls, and ensure the movement
of all surfaces is according to the movement of the
transmitter.
8. Anytime power is to be removed from the radio system,
it’s important to shut down power in the aircraft fi rst.
Otherwise, the aircraft could become out of control and
Summary of Contents for SKYFLY
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