Horizon Hobby UMX Gee Bee Instruction Manual
UMX
™
Gee Bee
®
Instruction Manual • Bedienungsanleitung • Manuel d’utilisation • Manuale di Istruzioni
SAFE® Select Technology, Optional Flight Envelope Protection
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UMX™ Gee Bee
®
EN
As the user of this product, you are solely responsible for
operating in a manner that does not endanger yourself
and others or result in damage to the product or the
property of others.
• Always keep a safe distance in all directions around
your model to avoid collisions or injury. This model
is controlled by a radio signal subject to interference
from many sources outside your control. Interference
can cause momentary loss of control.
• Always operate your model in open spaces away
from full-size vehicles, traffic and people.
• Always carefully follow the directions and warnings
for this and any optional support equipment (chargers,
rechargeable battery packs, etc.).
• Always keep all chemicals, small parts and anything
electrical out of the reach of children.
• Always avoid water exposure to all equipment not
specifically designed and protected for this purpose.
Moisture causes damage to electronics.
• Never place any portion of the model in your mouth
as it could cause serious injury or even death.
• Never operate your model with low transmitter
batteries.
• Always keep aircraft in sight and under control.
• Always use fully charged batteries.
• Always keep transmitter powered on while aircraft is
powered.
• Always remove batteries before disassembly.
• Always keep moving parts clean.
• Always keep parts dry.
• Always let parts cool after use before touching.
• Always remove batteries after use.
• Always ensure failsafe is properly set before flying.
• Never operate aircraft with damaged wiring.
• Never touch moving parts.
NOTICE
All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby,
LLC. For up-to-date product literature, visit www.horizonhobby.com and click on the support tab for this product.
MEANING OF SPECIAL LANGUAGE
The following terms are used throughout the product literature to indicate various levels of potential harm when
operating this product:
WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral
damage, and serious injury OR create a high probability of superficial injury.
CAUTION: Procedures, which if not properly followed, create the probability of physical property damage AND a
possibility of serious injury.
NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND little or
no possibility of injury.
WARNING: Read the ENTIRE instruction manual to become familiar with the features of the product before
operating. Failure to operate the product correctly can result in damage to the product, personal property and
cause serious injury.
This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic
mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage
to the product or other property. This product is not intended for use by children without direct adult supervision. Do
not use with incompatible components or alter this product in any way outside of the instructions provided by Horizon
Hobby, LLC. This manual contains instructions for safety, operation and maintenance. It is essential to read and follow
all the instructions and warnings in the manual, prior to assembly, setup or use, in order to operate correctly and
avoid damage or serious injury.
Safety Precautions and Warnings
14
+
AGE RECOMMENDATION:
Not for children under 14
years. This is not a toy.
WARNING AGAINST COUNTERFEIT PRODUCTS: If you ever
need to replace your Spektrum receiver found in a Horizon
Hobby product, always purchase from Horizon Hobby, LLC or a
Horizon Hobby authorized dealer to ensure authentic high-quality
Spektrum product. Horizon Hobby, LLC disclaims all support and
warranty with regards, but not limited to, compatibility and
performance of counterfeit products or products claiming
compatibility with DSM or Spektrum technology.
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Instruction Manual
EN
If you own this product, you may be required to register with the FAA.
For up-to-date information on how to register with the FAA, visit https://registermyuas.faa.gov/.
For additional assistance on regulations and guidance on UAS usage, visit www.knowbeforeyoufly.org/.
Table of Contents
SAFE® Select Technology ................................................4
Preflight Checklist ...........................................................4
AS3X® Stabilization .........................................................4
Transmitter and Receiver Binding ...................................5
Installing the Flight Battery ............................................5
Arming the ESC ..............................................................6
Low Voltage Cutoff (LVC) .................................................6
SAFE Select Switch Designation......................................7
AS3X Control Direction Test .............................................7
Control Centering ............................................................8
Settings for Control Horns ...............................................8
Control Direction Test ......................................................8
Dual Rates and Expos .....................................................9
Adjusting Center of Gravity (CG) ......................................9
Flying Tips and Repairs .................................................10
Additional Safety Precautions and Warnings ..................11
Post Flight Checklist .....................................................11
Service of Power Components ......................................12
Troubleshooting Guide ............................................13–14
Limited Warranty ....................................................15–16
Contact Information ......................................................16
FCC Information ............................................................17
IC Information ...............................................................17
Compliance Information for the European Union ............17
Replacement Parts ........................................................63
Recommended Parts .....................................................63
Optional Parts ...............................................................63
Motor: BL180 (Brushless) Outrunner
Motor, 36Kv (EFLUM180BLC)
Installed
ESC: 6Ch UMX AS3X Receiver BL-ESC
(EFLA6420BLGB)
Installed
(4) 2.3-Gram Performance Linear
Long Throw Servo (SPMSA2030L)
Installed
Recommended Battery: 200mAh 2S
25C Li-Po (EFLB2002S25)
Required to
Complete
Recommended Battery Charger:
2S 7.4V Li-Po (EFLUC1007)
Required to
Complete
Recommended Transmitter:
Spektrum™ DSM2®/DSMX® with
dual-rates and expo (DX4e and up)
Required to
Complete
13.9 in (352mm)
20.1 in (510mm)
3.60 oz
(102 g)
Specications
Box Contents
Quick Start Information
Transmitter Setup Set up your transmitter using the transmitter setup chart
Dual Rates
Hi Rate Low Rate
Ail 100% 70%
Ele 100% 70%
Center of Gravity (CG) 26mm back from leading edge of the wing at the root
Flight Timer Setting 4 minutes
Operating Frequency 2404–2476 MHz
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UMX™ Gee Bee
®
AS3X® Stabilization
DELIVERS BREAKTHROUGH PERFORMANCE
The AS3X® system for airplanes is an electronic
enhancement system that makes it possible for you to
experience super-smooth flight performance, yet still
have full control authority for sport or scale flight.
Turbulence, torque and tip stalls are just some of the
many complications to assess when trying to achieve
smooth flight. The Horizon Hobby world-class team of RC
pilots developed the AS3X system for airplanes based on
the successful use of AS3X with ultra micro flybarless
helicopters. Specially tuned for airplanes, the AS3X system
invisibly helps with complicated corrections, allowing you
to experience ultra-smooth flight performance that feels so
natural that you’ll quickly build confidence in the capability
of the airplane.
AS3X system setup is simple. Just bind your DSM2®/
DSMX® transmitter to the model using a basic airplane
program and AS3X will assure that the locked-in feel and
control authority you want is instantly at your command to
help show off your RC pilot skills.
AS3X will innovate the way you’ll want to fly now and in
the future.
SAFE® Select Technology
The evolutionary SAFE® Select technology can offer an
extra level of protection so you can perform the first flight
with confidence. No complex transmitter programming
is required. Just follow the simple bind process to make
the SAFE Select system active. When activated, bank
and pitch limitations keep you from over-controlling and
automatic self-leveling makes recovery from risky or
confusing attitudes as simple as releasing the sticks. In
fact, with the aileron, elevator and rudder sticks in the
neutral position, SAFE Select will automatically keep the
airplane in a straight and level attitude.
Expand the advantage of what SAFE® Select technology
offers by assigning it to a switch. No transmitter
programming is required and you’ll be able to turn the
system ON and OFF with the flip of a switch. For example,
turn SAFE select ON for takeoffs to counter the torque
of the propeller. Turn it OFF in flight for unrestricted
aerobatic performance, and turn it back ON when a buddy
wants to try out your cool aircraft. Turn SAFE Select
ON for landings. SAFE Select reduces your workload by
compensating for pitch changes automatically, regardless
of throttle position. It will help keep the correct pitch
attitude and wings level during the final approach.
Whether you’re a beginner or an expert, SAFE Select can
make your flights a great experience.
When the normal bind process is followed, the SAFE
Select system is disabled, leaving specially tuned AS3X®
technology in place to deliver a pure, unrestricted flight
experience.
Preight Checklist
1. Charge flight battery.
2. Install flight battery in aircraft (once it has been
fully charged).
3. Bind aircraft to transmitter.
4. Make sure linkages move freely.
5. Perform Control Direction Test with transmitter.
6. Set dual rates and exponential.
7. Adjust center of gravity.
8. Perform a radio system Range Check.
9. Find a safe and open area.
10. Plan flight for flying field conditions.
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Instruction Manual
Binding is the process of programming the receiver of the control unit to recognize the GUID (Globally Unique Identifier)
code of a single specific transmitter. You need to ‘bind’ your chosen Spektrum™ DSM2®/DSMX® technology equipped
aircraft transmitter to the receiver for proper operation.
Any Spektrum DSM2/DSMX transmitter can bind to the AS3X® DSM® receiver. For optimal performance, use a transmitter
with exponential and dual rates.
Binding Procedure
1. Refer to your transmitter’s unique instructions for binding to a receiver.
2. Make sure the flight battery is disconnected from the aircraft.
3. Power off the transmitter.
4. Connect the flight battery in the aircraft. The receiver LED will begin to flash rapidly, (typically after 5 seconds).
5. Make sure the transmitter controls are at neutral and the throttle and throttle trim are in the low position.
6. Put your transmitter into bind mode. Refer to your transmitter’s manual for binding button or switch instructions.
7. After 5 to 10 seconds, the receiver status LED will become solid, indicating that the receiver is bound to the
transmitter. If the LED does not turn solid, refer to the Troubleshooting Guide at the back of the manual.
For subsequent flights, power on the transmitter for 5 seconds before connecting the flight battery.
1. Remove the battery hatch.
2. Attach the flight battery to the hook and loop strip (A)
on the battery tray. See the Adjusting the Center of
Gravity instructions for the battery’s position.
3. Place the aircraft on the ground out of the wind and
connect a fully charged flight battery.
Ensure the aircraft is immobile for 5 seconds
so the AS3X system initializes correctly. See the
Arming the ESC instructions for correct connection of
the battery to the ESC.
4. Install the battery hatch.
NOTICE: If using a different battery than the
recommended 2-Cell 7.4V 200mAh 25C Li-Po, use
hook and loop tape (PKZ1039) to secure the battery.
CAUTION: Always disconnect the Li-Po
battery from the aircraft receiver when not
flying to avoid over-discharging the battery. Batteries
discharged to a voltage lower than the lowest
approved voltage may become damaged, resulting
in loss of performance and potential fire when
batteries are charged.
A
Transmitter and Receiver Binding
Installing the Flight Battery
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UMX™ Gee Bee
®
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3
If you accidentally connect the battery while the throttle is fully raised, the ESC will enter programming mode. Disconnect
the battery immediately.
The AS3X system will not activate until the throttle stick or trim is increased for the first time. Once the AS3X is active, the
control surfaces may move rapidly on the aircraft. This is normal.
AS3X will remain active until the battery is disconnected.
CAUTION: Always keep hands away from the propeller. When armed, the motor will turn the propeller in
response to any throttle movement.
Arming the ESC also occurs after binding as previously described, but subsequent connection of a flight battery requires
the steps below.
Lower throttle and throttle trim
to lowest settings.
Power on the Transmitter
then wait 5 seconds
Install flight battery and connect
it to the ESC.
Keep plane immobile
and away from wind
for 5 seconds.
Series of tones
Continuous LED
Low Voltage Cutoff (LVC)
When a Li-Po battery is discharged below 3V per cell, it
will not hold a charge. The aircraft’s ESC protects the flight
battery from over-discharge using Low Voltage Cutoff
(LVC). Before the battery charge decreases too much, LVC
removes power supplied to the motor. Power to the motor
quickly decreases and increases, showing that some battery
power is reserved for flight control and safe landing.
When the motor power pulses, land the aircraft immediately
and recharge the flight battery.
Disconnect and remove the Li-Po battery from the aircraft
after use to prevent trickle discharge. Before storage,
charge the Li-Po battery to full capacity. During storage,
make sure battery charge does not fall below 3V per cell.
Tip: Due to the quiet nature of the aircraft, you may not hear
the pulsing of the motor.
For your first flights, set your transmitter timer or a
stopwatch to 3 minutes. Adjust your timer for longer or
shorter flights once you have flown the model. Flights of
4.5 minutes or more are achievable if using proper throttle
management.
NOTICE: Repeated flying to LVC will damage the battery.
Arming the ESC
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