Horizon Hobby E-flite SAFE plug-N-Play Viper 70mm EDF User manual

Instruction Manual
Bedienungsanleitung
Manuel d’utilisation
Manuale di Istruzioni EFL077500
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EFL077500
Updated 7/23

EN
Viper 70mm EDF
2
Safety Precautions and Warnings
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
horizonhobby.com or towerhobbies.com and click on the support or resources tab for this product.
AGE RECOMMENDATION: Not for children under 14 years. This is not a toy.
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.
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.
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.

EN
3
Table of Contents
Model Assembly ................................................................................................... 4
Horizontal Stabilizer Installation ....................................................................... 4
Vertical Stabilizer Installation ........................................................................... 4
Wing Installation.............................................................................................. 5
Receiver Installation.............................................................................................. 5
AR631 Installation............................................................................................ 5
Transmitter Setup ................................................................................................. 6
Dual Rates....................................................................................................... 6
Exponential...................................................................................................... 6
NX Series Transmitter Setup ............................................................................ 6
DX Series Transmitter Setup ............................................................................ 6
iX Series Transmitter Setup.............................................................................. 6
General Binding Tips and Failsafe ......................................................................... 7
Transmitter and Receiver Binding / Enable or Disable SAFE Select ........................ 7
SAFE®Select Technology...................................................................................... 8
Differences Between SAFE and AS3X Modes.................................................... 8
SAFE®Select Switch Designation.......................................................................... 8
Assigning a Switch .......................................................................................... 8
Battery Installation and ESC Arming...................................................................... 9
Battery Selection ............................................................................................. 9
Low Voltage Cutoff (LVC)....................................................................................... 9
Center of Gravity................................................................................................... 9
Control Horn and Servo Arm Settings.................................................................... 9
Dual Rates and Control Throws........................................................................... 10
In Flight Trimming............................................................................................... 10
Control Direction Test.......................................................................................... 10
Ailerons......................................................................................................... 10
Elevators ....................................................................................................... 10
Rudder .......................................................................................................... 10
Control Surface Centering................................................................................... 11
Power System Installation and Service................................................................ 11
Disassembly.................................................................................................. 11
Assembly....................................................................................................... 11
Post Flight........................................................................................................... 11
Troubleshooting Guide AS3X ............................................................................... 12
Troubleshooting Guide ........................................................................................ 12
Replacement Parts.............................................................................................. 13
Recommended Parts........................................................................................... 13
Optional Parts..................................................................................................... 13
Important Federal Aviation Administration (FAA) Information................................ 13
AMA National Model Aircraft Safety Code............................................................ 13
Limited Warranty ................................................................................................ 14
Contact Information ............................................................................................ 14
FCC Information.................................................................................................. 14
IC Information..................................................................................................... 14
Compliance Information for the European Union.................................................. 14
Registration
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Included Equipment
Receiver Spektrum™AR631 DSMX 6-Channel AS3X & SAFE Receiver
(SPMAR631)
ESC Avian™ 85-Amp Smart Lite Brushless ESC, 3S–6S with IC5
Connector (SPMXAE85A)
Motor Brushless Inrunner Motor, 3060–1900Kv 4-pole (SPMXAM3000)
Servos
(4) Left Elevator, Left Flap, Right Aileron, Nose Gear:
Spektrum A335 Sub-Micro Digital 9g Metal Gear Servo (SPMSA335)
(4) Right Elevator, Right Flap, Left Aileron, Rudder:
Spektrum A335R Sub-Micro Digital 9g Metal Gear Servo, Reversed
(SPMSA335R)
Recommended Equipment
Transmitter Full range 6-Channel 2.4GHz w/ Spektrum DSM2/DSMX®
Technology
Battery Spektrum 22.2V 3200mAh 6S 50C Smart G2 LiPo Battery:
IC5 (SPMX326S50)
Battery Charger 6-Cell Li-Po Battery Balancing Charger
Specications
Wingspan 43.31" (1100mm)
Length 40.39" (1026mm)
Weight Without Battery: 47 oz (1340g)
With Recommended 6S 3200mAh Battery: 64 oz (1820g)

EN
Viper 70mm EDF
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Model Assembly
Vertical Stabilizer Installation
1. Connect the rudder servo connector to the extension in the fuselage labeled
RUDD. Feed the excess servo wire into the fuselage.
2. Press the vertical stabilizer into the slot in the horizontal stabilizer and the
fuselage, ensuring no servo wires are pinched.
3. Insert three countersunk machine screws (M3 x 16mm) through the vertical
stabilizer and into the fuselage. Do not overtighten the screws.
Horizontal Stabilizer Installation
1. Connect both elevator servo connectors to the extensions labeled ELEV in the
fuselage. Feed the excess servo wire into the fuselage, making sure the servo
plugs and excess wire are not visible when looking in the tail cone.
TIP: Note the correct polarity of the servo plugs: brown to brown, yellow to
yellow, and,orange to orange.
2. Press the horizontal stabilizer onto the fuselage, ensuring the alignment tab on
the stabilizer fits into the recess in the fuselage and no servo wires are pinched.
3. Insert two countersunk machine screws (M3 x 16mm) through the horizontal
stabilizer and into the rear holes in the fuselage.
Use a 2mm hex wrench, and do not overtighten the screws.
M3 x 16mm
M3 x 16mm

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5
Wing Installation
1. Carefully separate the aileron, flap, and retract servo extensions exiting the
wing.
2. Ensure the servo plugs are securely connected to the Y-harness. The extensions
are labeled AIL, FLAP, and GEAR.
NOTE: The gear Y-harness is pre-installed. GEAR servo plugs will be installed
after wing is installed.
3. Feed the Y-harness leads from the aileron, flap, and retract servos through the
hole in the bottom of the fuselage (as shown), while carefully pulling the servo
extension through the fuselage from the receiver/battery hatch.
4. Slide the wing into place. Do not pinch any of the servo wires.
5. Attach the wing to the fuselage with six countersunk machine screws
(M3 x 16mm). Do not overtighten the screws.
6. Connect the wing’s GEAR servo plugs to the receiver’s Y-harness labeled GEAR.
7. Install the AIL servo plug into the receiver aileron port (CH2).
8. Install the FLAP servo plug into the receiver flap port (CH6).
Model Assembly
The recommended receiver for this aircraft is the Spektrum AR631. If you choose to
install a different receiver, ensure that it is at least a 6-channel full range receiver.
Refer to the manual of your chosen receiver for correct installation and operation
instructions.
AR631 Installation
1. Slide the canopy latch back and lift the back of the canopy to remove the
canopy from the fuselage.
2. Attach the appropriate control surfaces to the their respective ports on the
receiver using the table at the right.
3. Using double-sided servo tape, mount the receiver as far back in the battery
compartment as possible. The receiver should be mounted parallel to the length
of the fuselage, with the label facing up and the servo ports facing the rear of
the aircraft, as shown. The orientation of the receiver is critical for all AS3X®
and SAFE®technology setups.
CAUTION: Incorrect installation of the receiver could cause a crash.
Receiver Installation
AR631 Port Assignments
1 = Throttle 4 = Rudder/Nose Wheel
2 = Aileron 5 = Retracts
3 = Elevator 6 = Flaps

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Viper 70mm EDF
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DX Series Transmitter Setup
1. Power ON your transmitter, click on scroll wheel, roll to System Setup and click
the scroll wheel. Select YES.
2. Go to Model Select and choose Add New Model at the bottom of the list.
The system asks if you want to create a new model, select Create.
3. Set Model Type: Select Airplane Model Type by choosing the airplane.
The system asks you to confirm model type, data will be reset. Select YES.
4. Set Model Name: Input a name for your model file.
5. Go to Aircraft Type and scroll to the wing selection,
choose Wing: 1 Ail 1 Flap Tail: Normal
6. Select Main Screen, Click the scroll wheel to enter the Function List.
7. Set D/R (Dual Rate) and Expo: Aileron
Set Switch: Switch F
Set High Rates: 100%, Expo 10% —Low Rates: 70%, Expo 5%
8. Set D/R (Dual Rate) and Expo: Elevator
Set Switch: Switch C
High Rates: 100%, Expo 10% —Low Rates 70%, Expo 5%
9. Set D/R (Dual Rate) and Expo: Rudder
Set Switch: Switch G
High Rates: 100%, Expo 10% —Low Rates 70%, Expo 5%
10.Set Throttle Cut; Switch: Switch H, Position: -100%
11.Select Flaps
Set Switch: Switch D
Set Flaps: POS 0: -100%, POS 1: -25%, POS 2: 55%
Set Elevator to Flap Mix: POS 0: 0%, POS 1: 11%, POS 2: 11%
Set Speed: 2.0
iX Series Transmitter Setup
1. Power ON your transmitter and begin once the Spektrum AirWare app is open.
Select the orange pen icon in the screen’s upper left corner, the system asks
for permission to Turn Off RF, select PROCEED.
2. Select the three dots in the upper right corner of the screen,
select Add a New Model.
3. Select Model Option, choose DEFAULT, select Airplane.
The system asks if you want to create a new acro model, select Create.
4. Select the last model on the list, named Acro.
Tap on the word Acro and rename the file to a name of your choice.
5. Press and hold the back arrow icon in the upper left corner of the screen to
return to the main screen.
6. Go to the Model Setup menu. Select Aircraft Type. The system asks for
permission to Turn Off RF, select PROCEED. Touch the screen to select wing.
Select 1 Ail 1 Flap.
7. Press and hold the back arrow icon in the upper left corner of the screen to
return to the main screen.
iX Series Transmitter Setup
8. Go to the Model Adjust menu.
9. Set Dual Rates and Expo: Select Aileron
Set Switch: Switch F
Set High Rates: 100%, Expo 10% —Low Rates: 70%, Expo 5%
10.Set Dual Rates and Expo: Select Elevator
Set Switch: Switch C
High Rates: 100%, Expo 10% —Low Rates 70%, Expo 5%
11.Set D/R (Dual Rate) and Expo: Rudder
Set Switch: Switch G
High Rates: 100%, Expo 10% —Low Rates 70%, Expo 5%
12.Select Flap System
Set Switch: Switch D
Set Flaps: POS 0: -100%, POS 1: -25%, POS 2: 55%
Set Elevator to Flap Mix: POS 0: 0%, POS 1: 11%, POS 2: 11%
Set Speed: 2.0
13.Set Throttle Cut; Switch: Switch H, Position: -100%
NX Series Transmitter Setup
1. Power ON your transmitter, click on scroll wheel, roll to System Setup and
click the scroll wheel. Select YES.
2. Go to Model Select and choose Add New Model near the bottom of the list.
Select Airplane Model Type by choosing airplane image, select Create.
3. Set Model Name: Input a name for your model file.
4. Go to Aircraft Type and scroll to the wing selection,
choose Wing: 1 Ail 1 Flap Tail: Normal
5. Select Main Screen, Click the scroll wheel to enter the Function List.
6. Go to D/R (Dual Rate) and Expo menu to set D/R and Expo.
7. Set Rates and Expo: Aileron
Set Switch: Switch F
Set High Rates: 100%, Expo 10% —Low Rates: 70%, Expo 5%
8. Set Rates and Expo: Elevator
Set Switch: Switch C
High Rates: 100%, Expo 10% —Low Rates 70%, Expo 5%
9. Set D/R (Dual Rate) and Expo: Rudder
Set Switch: Switch G
High Rates: 100%, Expo 10% —Low Rates 70%, Expo 5%
10.Set Throttle Cut; Switch: Switch H, Position: -100%
11.Select Flap System
Set Switch: Switch D
Set Flaps: POS 0: -100%, POS 1: -25%, POS 2: 55%
Set Elevator to Flap Mix: POS 0: 0%, POS 1: 11%, POS 2: 11%
Set Speed: 2.0
Transmitter Setup
IMPORTANT: After you set up your model, always rebind the transmitter and
receiver to set the desired failsafe positions.
The GEAR Channel (CH 5) controls the retractable landing gear. If you are using a 6
channel transmitter, The FLAP Channel (CH 6) can be used to toggle SAFE Select.
With the values listed below it will turn SAFE on for half and full flap positions and
AS3X will be on for no flaps position.
To use the FLAP channel for the SAFE Select switch the values must be set to
+100 and -100 and the speed set to 0 temporarily to assign the safe switch in the
flap system menu. Then change the flap systems values back to the listing in the
transmitter setup. See the SAFE Select Switch Designation section of this manual
to assign the switch for SAFE Select.
For the first flight, set the flight timer to 3 minutes 40 seconds. Adjust the time after
the initial flight.
Dual Rates
Attempt your rst ights in low rate. For landings, use high rate elevator.
NOTICE: To ensure AS3X technology functions properly, do not lower rate values
below 50%. If less control deflection is desired, manually adjust the position of
the pushrods on the servo arm.
NOTICE: If oscillation occurs at high speed, refer to the Troubleshooting Guide
for more information.
Exponential
After first flights, you may adjust exponential in your transmitter.

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General Binding Tips and Failsafe
• The included receiver has been specifically programmed for operation of this
aircraft. Refer to the receiver manual for correct setup if the receiver is replaced.
• Keep away from large metal objects while binding.
• Do not point the transmitter’s antenna directly at the receiver while binding.
• The red LED on the receiver will flash rapidly when the receiver enters bind
mode.
• Once bound, the receiver will retain its bind settings for that transmitter until
you re-bind.
• If the receiver loses transmitter communication, the failsafe will activate.
Failsafe moves the throttle channel to low throttle. Pitch and roll channels move
to actively stabilize the aircraft in a descending turn.
• If problems occur, refer to the troubleshooting guide or if needed, contact the
appropriate Horizon Product Support office.
Transmitter and Receiver Binding / Enable or Disable SAFE Select
The BNF Basic version of this airplane includes SAFE Select technology, enabling
you to choose the level of flight protection. SAFE mode includes angle limits and
automatic self leveling. AS3X mode provides the pilot with a direct response to
the control sticks. SAFE Select is enabled or disabled during the bind process.
With SAFE Select disabled the aircraft is always in AS3X mode. With SAFE Select
enabled the aircraft will be in SAFE Select mode all the time, or you can assign a
switch to toggle between SAFE Select and AS3X modes.
Thanks to SAFE Select technology, this aircraft can be configured for full-time SAFE
mode, full-time AS3X mode, or mode selection can be assigned to a switch.
IMPORTANT: Before binding, read the transmitter setup section in this manual
and complete the transmitter setup table to ensure your transmitter is properly
programmed for this aircraft.
IMPORTANT: Move the transmitter flight controls (rudder, elevators, and ailerons)
and the throttle trim to neutral. Move the throttle to low before and during
binding. This process defines the failsafe settings.
You can use either the bind button on the receiver case OR a conventional bind
plug to complete the binding and SAFE Select process.
SAFE can also be enabled via Forward Programming.
To Enable SAFE Select To Enable SAFE Select
To Disable SAFE Select To Disable SAFE Select
Using The Bind Button... Using The Bind Plug...
SAFE SELECT ENABLED: The control surfaces cycle back and forth twice
with a slight pause at neutral position every time the receiver is powered on.
SAFE SELECT DISABLED: The control surfaces cycle back and forth once
every time the receiver is powered on.
SAFE SELECT DISABLED: The control surfaces cycle back and forth once
every time the receiver is powered on.
SAFE SELECT ENABLED: The control surfaces cycle back and forth twice with a
slight pause at neutral position every time the receiver is powered on.
Press and Hold Bind Button
Press and Hold Bind Button
Release Bind ButtonOrange Flashing LED
Connect PowerLower Throttle
Bind TX to RX
Bind TX to RX
Lower Throttle Connect Power
Release Bind Button
Orange Flashing LED
Install Bind Plug
Remove Bind Plug
Connect Power
Bind TX to RX
Lower Throttle
Install Bind Plug
Remove Bind Plug
Lower Throttle Connect Power
Bind TX to RXOrange Flashing LED
Orange Flashing LED
BIND
BIND
BIND
BIND

EN
Viper 70mm EDF
8
SAFE®Select Switch Designation
SAFE®Select technology can be assigned to any open switch (2 or 3 position)
controlling a channel (5–9) on your transmitter. Once assigned to a switch, SAFE
select ON gives you the flexibility to choose SAFE technology or AS3X mode while
in flight. If the aircraft is bound with SAFE select OFF, the aircraft will be in AS3X
mode exclusively.
IMPORTANT: Before assigning your desired switch, ensure that the travel for that
channel is set at 100% in both directions and the aileron, elevator, rudder and
throttle are all on high rate with the travel at 100%.
CAUTION: Keep all body parts well clear of the rotor and keep the aircraft
securely restrained in case of accidental throttle activation.
TIP: SAFE Select is assignable on any unused channels 5–9. See your
transmitter manual for more information about assigning a switch to a channel.
TIP: Use your radio channel monitor to confirm that the four primary channels
are showing 100% travel while assigning the switch.
TIP: Use the channel monitor to make sure the switch you are assigning for SAFE
Select is active and driving a channel between 5-9 and that it is traveling 100% in
each direction.
TIP: Make sure your four primary channels are not reversed if you are having
trouble assigning a SAFE Select switch.
Assigning a Switch
1. Bind the aircraft to choose SAFE Select ON. This will allow the system to be
assigned to a switch.
2. Hold both transmitter sticks to the inside bottom corners and toggle the
desired switch 5 times (1 toggle = full up and down) to assign that switch.
The control surfaces of the aircraft will move, indicating the switch has been
selected.
Repeat the process to assign a different switch or to deactivate the current switch
if desired.
100%
x 5
100%
Mode 1 and 2 Transmitters
When flying in SAFE Select 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, and the amount the stick is moved will
determine the attitude the airplane flies. Holding full control will push the aircraft to
the pre-determined pitch and roll limits, but it will not go past those angles.
When flying with SAFE Select it is normal to hold the control stick deflected with
moderate aileron input when flying through a turn. To fly smoothly with SAFE Select
avoid making frequent control changes and don’t attempt to correct for minor
deviations. With SAFE Select, 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
Select mode to AS3X mode. If you do not neutralize controls when switching into
AS3X mode, the control inputs used for SAFE Select mode will be excessive for
AS3X mode and the aircraft will react immediately.
SAFE®Select Technology
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.

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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). Once the battery discharges to 3V per cell, the LVC will reduce the
power to the motor in order to leave adequate power to the receiver and servos to
land the airplane.
When the motor power decreases, land the aircraft immediately and replace or
recharge the flight battery.
Always disconnect and remove the Li-Po battery from the aircraft after each
flight. Charge your Li-Po battery to about half capacity before storage. Make sure
the battery charge does not fall below 3V per cell. Failure to unplug a connected
battery will result in trickle discharge.
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.
NOTICE: Repeated flying to LVC will damage the battery.
Low Voltage Cutoff (LVC)
Battery Selection
We recommend a 22.2V 6S 3200mAh 50C LiPo battery with IC5 connector. If using
a different battery, the battery should be of similar capacity, dimensions and weight
to fit in the fuselage. Always be sure the model balances at the recommended CG
with the battery chosen.
1. Lower the throttle to the lowest setting.
2. Power on the transmitter and wait 5 seconds.
3. Apply the loop side (soft side) of the hook and loop tape to the bottom of the
battery.
4. Slide the canopy latch back and lift the back of the canopy to remove it.
5. Install the fully charged battery in the battery compartment as shown.
See the Adjusting the Center of Gravity instructions for more information.
6. Secure the flight battery with the hook and loop strap.
7. Connect the ESC to the battery power lead IC5 connector, noting the correct
polarity. The ESC will emit two sets of audible tones in succession indicating the
programming status.
• The first set of tones indicates the number of cells in the connected LiPo
battery pack. 6 rapid tones = 6
• The second set of tones indicates the brake status. One tone indicates brake
“ON” and two tones indicates brake “OFF”.
NOTICE: Connecting the battery to the ESC with incorrect polarity will damage
the ESC and void the warranty.
8. The ESC is now ready for use.*
9. Reinstall the canopy hatch by sliding the hatch pin latch back on the fuselage.
Ensure the hatch pin engages.
*While additional programming of the ESC is not necessary to operate your aircraft,
programming options are available. Visit www.horizonhobby.com for complete
instructions on programming the included ESC.
80–90mm
behind the leading
edge at the wing root
Control Horn and Servo Arm Settings
First Time / Intermediate Level Pilots
Factory Setting Control Horns Servo Arms
Aileron
Elevator
Rudder
Flaps
The table to the right shows the factory settings for the control horns and servo
arms. Fly the aircraft at factory settings before making changes.
NOTICE: If control throws are changed from the factory settings, the AR631
gain values may need to be adjusted. Refer to the Spektrum AR631 manual for
adjustment of gain values.
After flying, you may choose to adjust the linkage positions for the desired control
response. See the table to the right.
WARNING: Install the battery but do not connect it to the ESC while
checking the CG. Personal injury may result.
The CG location is 80–90mm behind the leading edge at the wing root. Always
check the CG location with model inverted, and the landing gear down.
The CG location is adjusted by moving the battery pack forward or backward in the
battery compartment.
Center of Gravity
Battery Installation and ESC Arming

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Low Rate High Rate
Aileron p= 8mm
q= 8mm
p= 10mm
q= 10mm
Elevator p= 8mm
q= 8mm
p= 12mm
q= 12mm
Rudder = 8mm
= 8mm
= 14mm
= 14mm
Flap Travel Half q= 15mm
Full q= 45mm
WARNING: Do not perform this or any other equipment test without
turning on throttle cut. Serious injury or property damage could result
from the motor starting inadvertently.
If the control surfaces do not respond as shown, DO NOT FLY. Refer to the
Troubleshooting Guide for more information. If you need more assistance, contact
the appropriate Horizon Hobby Product Support department.
1. Power on the transmitter.
2. Enable the throttle cut.
3. Connect the battery.
4. Use the transmitter to operate the aileron, elevator and rudder controls.
NOTICE: View the aircraft from the rear when checking the control directions.
Ailerons
1. Move the aileron stick to the left. The right aileron should move down and the
left aileron up, which will cause the aircraft to bank left.
2. Move the aileron stick to the right. The right aileron should move up and the
left aileron down, which will cause the aircraft to bank right.
Elevators
3. Pull the elevator stick back. The elevators should move up, which will cause
the aircraft to pitch up.
4. Push the elevator stick forward. The elevators should move down, which will
cause the aircraft to pitch down.
Rudder
5. Move the rudder stick to the left. The rudder should move to the left, which
will cause the aircraft to yaw left.
6. Move the rudder stick to the right. The rudder should move to the right, which
will cause the aircraft to yaw right.
Control Direction Test
Transmitter
Command Control Surface Response (viewed from the rear)
Aileron
ElevatorRudder
During your first flight, trim the aircraft for level flight. Make small trim adjustments
with your transmitter’s trim switches to straighten the aircraft’s flight path.
After adjusting the trim, do not touch the control sticks for 3 seconds. This allows
the receiver to learn the correct settings to optimize AS3X performance.
Failure to do so could affect flight performance.
In Flight Trimming
Program your transmitter to set the rates and control throws based on your
experience level. These values have been tested and are a good starting point to
achieve a successful first flight.
After flying, you may choose to adjust the values for the desired control response.
Dual Rates and Control Throws
3 Seconds