EN
9
WARNING:
If your transmitter supports it, always engage
throttle cut before approaching the aircraft.
Range Check your Radio System
After final assembly, range check the radio system with
the aircraft. Refer to your specific transmitter instruction
manual for range test information.
Flying
We recommend flying your aircraft
outside in no greater
than moderate winds or inside in a large gymnasium.
Always avoid flying near houses, trees, wires and buildings.
You should also be careful to avoid flying in areas where
there are many people, such as busy parks, schoolyards
or soccer fields. Consult local laws and ordinances before
choosing a location to fly your aircraft.
Hand Launching
To hand launch the aircraft, pinch the wing from the rear
between the vertical stabilizers with your thumb on top. We
recommend launching in SAFE flight mode. Advance to full
throttle and release the aircraft with a gentle forward toss,
slightly up (5–10 degrees above the horizon), and directly
into the wind. After the model gains altitude and speed,
decrease the throttle as you desire.
Landing
Always land into the wind. During the flare, keep the wings
level and the aircraft pointed into the wind. Slowly lower
the throttle while easing back on the elevator to bring the
aircraft gently down for a belly landing.
TIP:
We recommend belly landings on a soft surface. If
hard surfaces are your only option for landings, consider
installing the optional nose skid.
NOTICE:
Always fully lower the throttle at touch down
when landing the aircraft to prevent damage to the
propellers and motors.
Failure to lower the throttle stick and trim to the lowest
possible positions during a crash could result in damage to
the ESC in the receiver unit.
Over-Current Protection (OCP)
The aircraft is equipped with over-current protection. OCP
protects the ESC from overheating and stops the motor
when the transmitter throttle is set too high and the rotor
cannot turn. OCP will only activate when the throttle is
positioned just above 1/2 throttle. After the ESC stops the
motor, fully lower the throttle to re-arm the ESC.
Repairs
Crash damage is not covered under warranty.
Repair this aircraft using foam-compatible CA glue or clear
tape. Only use foam-compatible CA glue as other types of
glue can damage the foam. When parts are not repairable,
see the Replacement Parts List for ordering by item number.
SAFE
®
Technology
Flying Tips and Repairs
The Ultrix has two flight modes on Channel 5, SAFE and
AS3X.
When flying in SAFE mode, the aircraft will return to level
flight any time the aileron and elevator controls are at
neutral. Applying aileron or elevator control will cause
the airplane to bank, climb or dive. The amount the stick
is moved will determine the attitude the airplane flies.
Holding full control will push the aircraft to the pre-
determined bank and pitch limits, but it will not go past
those angles.
When flying in SAFE mode, it is normal to hold the control
stick deflected with moderate aileron input when flying
through a turn. To fly smoothly with SAFE, avoid making
frequent control changes and don’t attempt to correct for
minor deviations. Holding deliberate control inputs will
command the aircraft to fly at a specific angle, and the
model will make all corrections to maintain that flight
attitude.
Return the elevator and aileron controls to neutral before
switching from SAFE mode to AS3X mode. If you do not
neutralize controls when switching into AS3X mode, the
control inputs used for SAFE mode will be excessive for
AS3X mode and the aircraft will react immediately.
SAFE Select
AS3X
Control Input
Control stick is
neutralized
Aircraft will self level
Aircraft will continue to fly at its
present attitude
Holding a small
amount of control
Aircraft will bank or pitch to a moderate angle and
maintain the attitude
Aircraft will continue to pitch or
roll slowly
Holding full control
Aircraft will bank or pitch to the predetermined
limits and maintain the attitude
Aircraft will continue to roll or pitch
rapidly
Differences between SAFE and AS3X modes
This section is generally accurate but does not take into account flight speed, battery charge status, and other limiting factors.
