11
WARNING!
Always make sure that power is applied to the transmitter BEFORE applying power
to the receiver and servos, and the Tx throttle stick is at minimum (idle) position. Failure to do
so could result in the model becoming uncontrollable and cause a safety hazard. During all pre-
flight preparations, 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 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 flight. 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 flight.
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 reverse setting 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 movements of the throttle stick result in an equal adjustment of the throttle in the model.
Depending on whether the airplane is electric or combustion powered:
a. Electric: confirm that when the throttle stick is at maximum position the ESC gives the appropriate
indications (LED and/or beeps) for full forward flight. And, when the throttle stick is at minimum
position the ESC gives the appropriate indications for “off” or no motor rotation.
b. Combustion: confirm that when the throttle stick is at maximum position the mechanical linkage
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” to confirm the safe operating distance from the Tx to the Rx. 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 move the controls and confirm all surfaces move appropriately.
8. Anytime power is to be removed from the radio system, it’s important to shut down power in the
aircraft first. Otherwise, the aircraft could become out of control and cause a safety hazard! Move
the throttle stick and throttle trim lever to minimum position to stop the combustion engine or shut
down the ESC. Once the propeller has stopped rotating, move the switch harness in the model to
the OFF position, then disconnect the power battery from the ESC in electric airplanes. Then turn
off the power switch on the Tx.
1. Once all setup procedures have been confirmed, and power has been removed from the model and
transmitter, re-attach the propeller to the model and prepare for flight.
IMPORTANT:
Be very careful to stay clear from moving propellers!!
2. Make sure the combustion engine’s fuel tank has an adequate amount of fuel, and power batteries
for electric airplanes are fully charged.
SYSTEM CHECK and OPERATION
FLYING THE AIRCRAFT
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