HORIZON HOBBY EFL077500 Viper 70mm V2 EDF RC Jet Instruction Manual

70mm EDF

EFL077500 Viper 70mm V2 EDF RC Jet

Instruction Manual

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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.
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.
AGE RECOMMENDATION: Not for children under 14 years. This is not a toy.

Safety Precautions and Warnings

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.

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Specifications

Wingspan| 43.31″ (1100mm)
Length| 40.39″ (1026mm)
Weight| Without Battery: 47 oz (1340g)
With Recommended 6S 3200mAh Battery: 64 oz (1820g)
Included Equipment

Receiver| Spektrum'” AR631 DSMX 6-Channel AS3X & SAFE Receiver (SPMAR631)
ESC| AvianTM 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

Model Assembly

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.

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.

Model Assembly
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).

Receiver Installation
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.

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 first flights in low rate. For landings, use high rate elevator.
NOTICE: To ensure AS3X technology functions properly, do not lower rate va luesbelow 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.

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

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 forpermission 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%

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.
Using The Bind Button…

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.
To Disable SAFE Select

SAFE SELECT DISABLED: The control surfaces cycle back and forth onceevery time the receiver is powered on.

Using The Bind Plug…
To Enable SAFE Select

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.
To Disable SAFE Select

SAFE SELECT DISABLED : The control surfaces cycle back and forth once every time the receiver is powered on.

SAFE® Select Technology

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.
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.

| 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

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.

Battery Installation and ESC Arming

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 thebattery.

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.

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). 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.
Center of Gravity
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.
80–90mm behind the leading edge at the wing root

Control Horn and Servo Arm Settings

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.

First Time / Intermediate Level Pilots

Factory Setting| Control Horns| Servo Arms
Aileron| |
Elevator| |
Rudder| |
Flaps| |

Dual Rates and Control Throws
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.

| Low Rate| High Rate
---|---|---
Aileron| = 8mm
= 8mm| = 10mm
= 10mm
Elevator| = 8mm
= 8mm| = 12mm
= 12mm
Rudder| = 8mm
= 8mm| = 14mm
= 14mm
Flap Travel| Half = 15mm
Full = 45mm

In Flight Trimming
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.

Control Direction Test
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.

| Transmitter Command| Control Surface Response (viewed from the rear)
---|---|---
Aileron| |
|
Elevator| |
|
Rudder| |
|

Control Surface Centering
After assembly and transmitter setup, confirm that the control surfaces are centered. If the control surfaces are not centered, mechanically center the control surfaces by adjusting the linkages.
If adjustment is required, turn the ball link on the linkage to change the length of the linkage between the servo arm and the control horn.
After binding a transmitter to the aircraft receiver, set the trims and sub- trims to 0, then adjust the ball link to center the control surfaces.
CAUTION: Always disconnect the flight battery before performing service on any of the power system components.
Disassembly
The wing is removed in the illustrations for clarity. It is possible to access all of the power system components without removal of the wing.

1. Remove the two screws (A) from the fan unit cover (B) and pull the cover out of the fuselage.
2.  Remove the two screws (C) from the fan unit tabs.
3. Pull the fan unit (D) out of the fuselage and disconnect the motor leads from the ESC.
4.  Remove the spinner (E) from the fan by removing the screw from the motor shaft adapter.
5. Remove the nut and washer (F) to remove the fan (G) and motor shaft adapter (H).
6.  Remove the four screws (I) to remove the motor from the fan shroud (J).
7. Carefully remove the plastic ESC cover (K). The cover is glued to the fuselage.
8. Disconnect the throttle lead from the receiver and lift the ESC (L) from the fuselage, taking note of the routing of the power and throttle leads through the upper fuselage.

Assembly

Assemble in reverse order.

• Correctly align and connect the motor wire colors with the ESC wires.
• Ensure the front of the rotor is installed facing the nose of the aircraft.
• A tool is required to tighten the nut on the rotor and collet.
• Ensure no wiring is pinched by any of the power components.
• Ensure the ESC cover is securely glued to the fuselage.
• Ensure the spinner is fully connected for safe operation.

IMPORTANT: Allow the aircraft components to cool between flights.
Post Flight
Disconnect the flight battery from the ESC (required for safety and battery life).
Power OFF the transmitter.
Remove the flight battery from the aircraft.
Recharge the flight battery to storage voltage level.
Repair or replace all damaged parts.
Store the flight battery apart from the aircraft and monitor the battery charge.
Make note of the flight conditions and flight plan results, planning for future flights.

Troubleshooting Guide AS3X

fasteners as needed
Loose receiver| Align and secure receiver in fuselage
Loose aircraft controls| Tighten or otherwise secure parts (servo, arm, linkage, horn and control surface)
Worn parts| Replace worn parts (especially propeller, spinner or servo)
Irregular servo movement| Replace servo
Inconsistent flight performance| Trim is not at neutral| If you adjust trim more than 8 clicks, adjust the clevis to remove trim
Sub-Trim is not at neutral| No Sub-Trim is allowed. Adjust the servo linkage
Aircraft was not kept immobile for 5 seconds after battery connection| With the throttle stick in lowest position. Disconnect battery, then reconnect battery and keep the aircraft still for 5 seconds
Incorrect response to the AS3X Control Direction Test| Incorrect direction settings in the receiver, which can cause a crash| DO NOT fly. Correct the direction settings (refer to the receiver manual), then fly

Troubleshooting Guide

and throttle trim at lowest setting
Throttle servo travel is lower than 100%| Make sure throttle servo travel is 100% or greater
Throttle channel is reversed| Reverse throttle channel on transmitter
Motor disconnected from ESC| Make sure motor is connected to the ESC
Extra rotor noise or extra vibration| Damaged rotor and spinner, collet or motor| Replace damaged parts
Rotor is out of balance| Balance or replace rotor
Rotor nut is too loose| Tighten the rotor nut
Reduced flight time or aircraft underpowered| Flight battery charge is low| Completely recharge flight battery
Flight battery damaged| Replace flight battery and follow flight battery instructions
Flight conditions may be too cold| Make sure battery is warm before use
Battery capacity too low for flight conditions| Replace battery or use a larger capacity battery

**** Aircraft will not Bind (during binding) to transmitter

| Transmitter too near aircraft during binding process| Move powered transmitter a few feet from aircraft, disconnect and reconnect flight battery to aircraft
Aircraft or transmitter is too close to large metal object, wireless source or another transmitter| Move aircraft and transmitter to another location and attempt binding again
The bind plug is not installed correctly in the bind port| Install bind plug in bind port and bind the aircraft to the transmitter
Flight battery/transmitter battery charge is too low| Replace/recharge batteries
Bind switch or button not held long enough during bind process| Power off transmitter and repeat bind process. Hold transmitter bind button or switch until receiver is bound
Aircraft will not connect (after binding) to transmitter| Transmitter too near aircraft during connecting process| Move powered transmitter a few feet from aircraft, disconnect and reconnect flight battery to aircraft
Aircraft or transmitter is too close to large metal object, wireless source or another transmitter| Move aircraft and transmitter to another location and attempt connecting again
Bind plug left installed in bind port| Rebind transmitter to the aircraft and remove the bind plug before cycling power
Aircraft bound to different model memory (ModelMatchTM radios only)| Select correct model memory on transmitter
Flight battery/Transmitter battery charge is too low| Replace/recharge batteries
Transmitter may have been bound to a different aircraft using different DSM protocol| Bind aircraft to transmitter
Control surface does not move| Control surface, control horn, linkage or servo damage| Replace or repair damaged parts and adjust controls
Wire damaged or connections loose| Do a check of wires and connections, connect or replace as needed
Transmitter is not bound correctly or the incorrect airplanes was selected| Re-bind or select correct airplanes in transmitter
Flight battery charge is low| Fully recharge flight battery
BEC (Battery Elimination Circuit) of the ESC is damaged| Replace ESC
Controls reversed| Transmitter settings are reversed| Perform the Control Direction Test and adjust the controls on transmitter appropriately
**** Motor power pulses then motor loses power| ESC uses default soft Low Voltage Cutoff (LVC)| Recharge flight battery or replace battery that is no longer performing
Weather conditions might be too cold| Postpone flight until weather is warmer
Battery is old, worn out, or damaged| Replace battery
Battery C rating might be too small| Use recommended battery

Replacement Parts

Recommended Parts

Optional Parts

Important Federal Aviation Administration (FAA) Information

Use the QR code below to learn more about the Recreational UAS Safety Test (TRUST), as was introduced by the 2018 FAA Reauthorization Bill. This free test is required by the FAA for all recreational flyers in the United States. The completed certificate must be presented upon request by any FAA or law enforcement official.

http://horizonhobby.cc/3u8IPzP?r=qr

If your model aircraft weighs more than .55lbs or 250 grams, you are required by the FAA to register as a recreational flyer and apply your registration number to the outside of your aircraft. To learn more about registering with the FAA, use the QR code below.

http://horizonhobby.cc/2W9EAYs?r=qr

AMA National Model Aircraft Safety Code

Effective January 1, 2018
A model aircraft is a non-human-carrying device capable of sustained flight within visual line of sight of the pilot or spotter(s). It may not exceed limitations of this code and is intended exclusively for sport, recreation, education and/or competition. All model flights must be conducted in accordance with this safety code and related AMA guidelines, any additional rules specific to the flying site, as well as all applicable laws and regulations.
As an AMA member I agree:

• I will not fly a model aircraft in a careless or reckless manner.
•  I will not interfere with and will yield the right of way to all human-carrying aircraftusing AMA’s See and Avoid Guidance and a spotter when appropriate.
• I will not operate any model aircraft while I am under the influence of alcohol or any drug that could adversely affect my ability to safely control the model.
• I will avoid flying directly over unprotected people, moving vehicles, and occupied structures.
• I will fly Free Flight (FF) and Control Line (CL) models in compliance with AMA’s safety programming.
• I will maintain visual contact of an RC model aircraft without enhancement other than corrective lenses prescribed to me. When using an advanced flight system, such as an autopilot, or flying First-Person View (FPV), I will comply with AMA’s Advanced Flight System programming.
• I will only fly models weighing more than 55 pounds, including fuel, if certified through AMA’s Large Model Airplane Program.
• I will only fly a turbine-powered model aircraft in compliance with AMA’s Gas Turbine Program.
• I will not fly a powered model outdoors closer than 25 feet to any individual, except for myself or my helper(s) located at the flightline, unless I am taking off and landing, or as otherwise provided in AMA’s Competition Regulation.
• I will use an established safety line to separate all model aircraft operations from spectators and bystanders.

Limited Warranty

What this Warranty Covers —Horizon Hobby, LLC, (Horizon) warrants to the original purchaser that the product purchased (the “Product”) will be free from defects in materials and workmanship at the date of purchase.
What is Not Covered —This warranty is not transferable and does not cover (i) cosmetic damage, (ii) damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or due to improper use, installation, operation or maintenance, (iii)
modification of or to any part of the Product, (iv) attempted service by anyone other than a Horizon Hobby authorized service center, (v) Product not purchased from an authorized Horizon dealer, (vi) Product not compliant with applicable technical regulations, or (vii) use that violates any applicable laws, rules, or regulations.
OTHER THAN THE EXPRESS WARRANTY ABOVE, HORIZON MAKES NO OTHER WARRANTY OR REPRESENTATION, AND HEREBY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED  ARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER’S INTENDED USE.
Purchaser’s Remedy —Horizon’s sole obligation and purchaser’s sole and exclusive remedy shall be that Horizon will, at its option, either (i) service, or (ii) replace, any Product determined by Horizon to be defective. Horizon reserves the right to inspect any and all Product(s) involved in a warranty claim. Service or replacement decisions are at the sole discretion of Horizon. Proof of purchase is required for all warranty claims. SERVICE OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE
PURCHASER’S SOLE AND EXCLUSIVE REMEDY.
Limitation of Liability —HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY, REGARDLESS OF WHETHER SUCH  LAIM IS BASED IN CONTRACT, WARRANTY, TORT, NEGLIGENCE, STRICT LIABILITY OR ANY OTHER THEORY OF LIABILITY, EVEN IF HORIZON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
Further, in no event shall the liability of Horizon exceed the individual price of the Product on which liability is asserted. As Horizon has no control over use, setup, final assembly, modification or misuse, no liability shall be assumed nor accepted for any resulting damage or injury. By the act of use, setup or assembly, the user accepts all resulting liability. If you as the purchaser or user are not prepared to accept the liability associated with the use of the Product, purchaser is advised to return the Product  mmediately in new and unused condition to the place of purchase.
Law —These terms are governed by Illinois law (without regard to conflict of law principals). This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Horizon reserves the right to change or modify this  warranty at any time without notice.
WARRANTY SERVICES
Questions, Assistance, and Services—Your local hobby store and/or place of purchase cannot provide warranty support or service. Once assembly, setup or use of the Product has been started, you must contact your local distributor or Horizon directly. This will enable Horizon to better answer your questions and service you in the event that you may need any assistance. For questions or assistance, please visit our website at www.horizonhobby.com, submit a Product Support Inquiry, or call the toll free telephone number referenced in the Warranty and Service Contact Information section to speak with a Product Support representative. Inspection or Services—If this Product needs to be inspected or serviced and is compliant in the country you live and use the Product in, please use the Horizon Online Service Request submission process found on our website or call Horizon to obtain a Return Merchandise Authorization (RMA) number. Pack the Product securely using a shipping carton. Please note that original boxes may be included, but are not designed to withstand the rigors of shipping without additional protection. Ship via a carrier that provides tracking and insurance for lost or damaged parcels, as Horizon is not responsible for merchandise until it arrives and is accepted at our facility. An Online Service Request is available at http://www.horizonhobby.com/content /service-center_renderservice-center. If you do not have internet access, please contact Horizon Product Support to obtain a RMA number along with instructions for submitting your product for service. When calling Horizon, you will be asked to provide your complete name, street address, email address and phone number where you can be reached during business hours. When sending product into Horizon, please include your RMA number, a list of the included items, and a brief summary of the problem. A copy of your original sales receipt must be included for warranty consideration. Be sure your name, address, and RMA number are clearly written on the outside of the shipping carton.
NOTICE: Do not ship LiPo batteries to Horizon. If you have any issue with a LiPo battery, please contact the appropriate Horizon Product Support office.
Warranty Requirements —For Warranty consideration, you must include your original sales receipt verifying the proof-of-purchase date. Provided warranty conditions have been met, your Product will be serviced or replaced free of charge. Service or replacement decisions are at the sole discretion of Horizon.
Non-Warranty Service —Should your service not be covered by warranty, service will be completed and payment will be required without notification or estimate of the expense unless the expense exceeds 50% of the retail purchase cost. By submitting the item for service you are agreeing to payment of the service without notification. Service estimates are available upon request. You must include this request with your item submitted for service. Non- warranty service estimates will be billed a minimum of ½ hour of labor. In addition you will be billed for return freight. Horizon accepts money orders and cashier’s checks, as well as Visa, MasterCard, American Express, and Discover cards. By submitting any item to Horizon for service, you are agreeing to Horizon’s Terms and Conditions found on our website http://www.horizonhobby.com/content/service-center_render-service-center.

ATTENTION: Horizon service is limited to Product compliant in the country of use and ownership. If received, a non-compliant Product will not be serviced. Further, the sender will be responsible for arranging return shipment of the un-serviced Product, through a carrier of the sender’s choice and at the sender’s expense. Horizon will hold non-compliant Product for a period of 60 days from notification, after which it will be discarded.

Contact Information

Country of Purchase| Horizon Hobby| Contact Information| Address
---|---|---|---
United States of America| Horizon Service Center (Repairs and Repair Requests)| servicecenter.horizonhobby.com/RequestForm/| 2904 Research Rd
Champaign, Illinois, 61822 USA
Horizon Product Support (Product Technical Assistance)| productsupport@horizonhobby.com
800-338-4639
Sales| websales@horizonhobby.com
800-338-4639
European Union| Horizon Technischer Service
Sales: Horizon Hobby GmbH| service@horizonhobby.eu
+49 (0) 4121 2655 100| Hanskampring 9
D 22885 Barsbuttel, Germany

FCC Information

FCC ID: BRWSPMSR6200A
Supplier’s Declaration of Conformity
EFL Smart Viper 70mm EDF BNF-Basic (EFL077500)
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
CAUTION: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Horizon Hobby, LLC
2904 Research Rd.,
Champaign, IL 61822
Email: compliance@horizonhobby.com
Web: HorizonHobby.com

IC Information
CAN ICES-3 (B)/NMB-3(B)
IC: 6157A-SPMSR6200A
This device contains license-exempt transmitter(s)/receivers(s) that comply with Innovation, Science, and Economic Development Canada’s license-exempt RSS(s).
Operation is subject to the following 2 conditions:

1.  This device may not cause interference.
2. This device must accept any interference, including interference that may cause undesired operation of the device.

Compliance Information for the European Union
EU Compliance Statement:
EFL Smart Viper 70mm EDF BNF-Basic (EFL077500): Hereby,
** Horizon Hobby, LLC declares that the device is in compliance with the following: EU Radio Equipment Directive 2014/53/EU, RoHS 2 Directive 2011/65/EU, RoHS 3 Directive – Amending 2011/65/EU Annex II 2015/863.
The full text of the EU declaration of conformity is available at the following internet address: https://www.horizonhobby.com/content/support- render-compliance.
Wireless Frequency Range and Wireless Output Power:
2404-2476MHz
5.58dBm
EU Manufacturer of Record:
Horizon Hobby, LLC
2904 Research Road
Champaign, IL 61822 USA
EU Importer of Record:
Horizon Hobby, GmbH
Hanskampring 9
22885 Barsbüttel Germany
WEEE NOTICE:
** This appliance is labeled in accordance with European Directive 2012/19/EU concerning waste of electrical and electronic equipment (WEEE). This label indicates that this product should not be disposed of with household waste. It should be deposited at an appropriate facility to enable recovery and recycling.

© 2023 Horizon Hobby, LLC.
E-flite, AS3X, DSM, DSM2, DSMX, EC5, IC5, Avian, Spektrum Airware, Bind-N-Fly, BNF, the Bind-N-Fly logo, SAFE, the SAFE logo, ModelMatch, and the Horizon Hobby logo are trademarks or registered trademarks of Horizon Hobby, LLC.
The Spektrum  trademark is used with permission of Bachmann Industries, Inc.
All other trademarks, service marks and logos are property of their respective owners.
8,672,726, 9,056,667, 9,930,567, 9,753,457, 10,078,329, 10,419,970. US 10,849,013. Other patents pending.
www.horizonhobby.com
Updated 07/23
EFL077500
503171.1

References

• RC Airplanes and Helicopters, RC Cars and Trucks, RC Boats, RC Radios | Horizon Hobby
• Horizon Hobby Service Center
• RC Cars, RC Trucks, RC Airplanes, Model Trains, and Slot Cars at Tower Hobbies
• RC Airplanes and Helicopters, RC Cars and Trucks, RC Boats, RC Radios | Horizon Hobby
• RC Airplanes and Helicopters, RC Cars and Trucks, RC Boats, RC Radios | Horizon Hobby
• RC Airplanes and Helicopters, RC Cars and Trucks, RC Boats, RC Radios | Horizon Hobby

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