E-FLITE Viper 70mm EDF Instruction Manual

Instruction Manual

Bedienungsanleitung

Manuel d’utilisation

Manuale di Istruzioni

SAFE

®

Select Technology, Optional Flight Envelope Protection

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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 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.

14+

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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Quick Start Information

Transmitter Setup

Dual Rates*

1. Blank (Acro) Model

2. Wing Type: 1 Aileron, 1 Flap

3. Servo Reversing: Normal

4. Travel Adjust (All Surfaces): 100%

Aileron

Elevator

Rudder

High Rate p = 10mm q = 10mm p = 12mm q = 12mm

 = 14mm

 = 14mm

Low Rate p = 8mm q = 8mm p = 8mm q = 8mm

 = 8mm

 = 8mm

Flap Travel Half q = 22mm Full q = 45mm

EXPO

(Soft center)

Center of Gravity (CG)

Aileron

Elevator

Rudder

High Rate

10%

10%

10%

Low Rate

0%

0%

0%

80–90mm back from the leading edge, measured at the wing root

4 minutes Flight Timer Setting

* The dual rates values given are intended for first time electric ducted fan pilots through intermediate level pilots. For advanced settings options, see the Dual

Rates and Control Throws section of the manual.

Box Contents

Specifications

Motor: Motor 2860 KV1850 (EFLM1850)

ESC: 70A Brushless Switch Mode (EFLA1070EC5)

Servos: (7) (SPMA380, SPMA380R)

Retracts: Main and Nose Gear (EFLG130, EFLG131)

Receiver: Spektrum ™ AR636A 6-Channel Sport Receiver

(SPMAR636)

Recommended Battery: 22.2V 3300–3800mAh 30C 6S

LiPo with EC5 connector

Recommended Battery Charger:

6-cell Li-Po battery balancing charger

Recommended Transmitter:

Full-Range 2.4GHz with Spektrum ™ DSM2 ® technology and adjustable dual rates

/DSMX ®

Installed

Installed

Installed

Installed

Installed

Required to

Complete

Required to

Complete

Required to

Complete

Installed

Installed

Installed

Installed

Required to

Complete

Required to

Complete

Required to

Complete

Required to

Complete

Table of Contents

Preflight .................................................................................................................4

Model Assembly ....................................................................................................5

Model Assembly (Continued) ..................................................................................6

PNP Receiver Selection and Installation .................................................................6

Battery Installation and ESC Arming .......................................................................7

Center of Gravity (CG) ...........................................................................................7

Control Surface Centering ......................................................................................9

Control Surface Direction .......................................................................................9

Dual Rates and Control Throws ..............................................................................9

Control Horn and Servo Arm Settings .....................................................................9

In Flight Trimming ................................................................................................10

Flying Tips and Repairs ........................................................................................10

Post Flight............................................................................................................10

Power Components Service .................................................................................11

Troubleshooting Guide AS3X ................................................................................12

Troubleshooting Guide .........................................................................................12

Replacement Parts ...............................................................................................13

Optional Parts ......................................................................................................13

AMA National Model Aircraft Safety Code .............................................................14

Limited Warranty .................................................................................................15

Warranty and Service Contact Information ...........................................................15

FCC Information ...................................................................................................16

IC Information ......................................................................................................16

Compliance Information for the European Union ...................................................16

43.3 in (1100mm)

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, please visit https://registermyuas.faa.gov/.

For additional assistance on regulations and guidance on UAS usage, visit knowbeforeyoufly.org/.

~67–70 oz

(~1899–1984g)

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Preflight

1 Remove and inspect contents.

2 Read this instruction manual thoroughly.

3 Charge the flight battery.

4 Fully assemble the aircraft.

5 Install the flight battery in the aircraft (once it has been fully charged).

6 Check the Center of Gravity (CG).

7 Bind the aircraft to your transmitter.

Transmitter Setup (BNF)

IMPORTANT: After you set up your model, always rebind the transmitter and receiver to set the desired failsafe positions.

If your transmitter allows it, enable the throttle cut feature. Always engage throttle cut before approaching the aircraft.

Dual Rates

Low rate is recommended for the initial flights.

NOTICE: To ensure AS3X ® technology functions properly, do not lower rate values below 50%. If lower rates are 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.

Expo

After first flights, you may adjust expo in your transmitter.

8 Make sure all linkages move freely.

9 Perform the control direction test with the transmitter.

10 Adjust the flight controls and transmitter as needed.

11 Perform a radio system range test.

12 Find a safe open area to fly.

13 Plan flight for flying field conditions.

Computerized Transmitter Setup

(DX6i, DX6, DX7, DX7S, DX8, DX9, DX10t, DX18, DX20 and iX12)

Start all transmitter programming with a blank ACRO model (do a model reset), then name the model.

Set Dual Rates to:

HIGH 100%

LOW 70%

Set Servo Travel to: 100%

1. Go to the SETUP LIST MENU

DX6i

DX7S

DX8

2. Set MODEL TYPE: ACRO

3. Go to ADJUST LIST MENU

4. Set FLAPS: Norm £ 100 Flap

 100 Flap

1. Go to the SYSTEM SETUP

2. Set MODEL TYPE: AIRPLANE

3. Set WING TYPE: 1 AIL 1 FLAP

4. Go to the FUNCTION LIST

5. Set SERVO SETUP: Reverse GEAR

6. Set FLAP SYSTEM: Choose Flap

NORM: 100% FLAP

MID: 0% FLAP

LAND: -100% FLAP

SPEED 2.0S: SWITCH = FLAP

1. Go to the SYSTEM SETUP

DX6e

DX6 (Gen2)

DX7 (Gen2)

DX8 (Gen2)

DX9

DX10t

DX18

DX20 iX12

2. Set MODEL TYPE: AIRPLANE

3. Set AICRAFT TYPE:

WING: 1 AIL 1 FLAP

4. Go to the FUNCTION LIST

5. Set SERVO SETUP: Reverse GEAR

6. Set FLAP SYSTEM:

SELECT SWITCH D:

POS 0: 100% FLAP

POS 1: 0% FLAP

POS 2: -100% FLAP

SPEED 2.0

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Model Assembly

Horizontal Tail Installation

1. Connect both elevator servo connectors to the extensions in the fuselage labeled ELEV. Feed the excess servo wire into the fuselage.

2. Press the horizontal tail onto the fuselage, ensuring the alignment tab on the tail fits into the hole in the fuselage and no servo wires are pinched.

3. Insert two 3 x 16 mm screws through the horizontal surface and into the rear holes in the fuselage. Do not over tighten the screws.

Vertical Tail 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 tail into the slot in the horizontal tail and the fuselage, ensuring no servo wires are pinched.

3. Insert three 3 x 16 mm screws through the vertical tail and into the fuselage.

Do not over tighten the screws.

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Model Assembly

(Continued)

Wing Installation

1. Find the y-harnesses included in the accessory bag.

2. Connect the y-harness marked AILE to both aileron servos.

3. Connect the y-harness marked FLAP to both flap servos.

4. Connect the y-harness marked GEAR to both main gear retracts.

5. Feed the y-harness leads from the aileron and flap servos and the retracts through the hole in the bottom of the fuselage as shown.

6. Slide the wing into place, ensuring not to pinch any of the servo wires.

7. Attach the wing to the fuselage with six 3 x 16 mm screws. Do not over tighten the screws.

PNP Receiver Selection and Installation

The recommended receiver for this aircraft is the Spektrum AR636A.

If you choose to install a different receiver, ensure that it is at least a 6-channel full range (sport) receiver. Refer to the manual of your chosen receiver for correct installation and operation instructions.

AR636A 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.

1 = Throttle

2 = Aileron

3 = Elevator

4 = Rudder/Nose Wheel

5 = Retracts

6 = Flaps

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Battery Installation and ESC Arming

Battery Selection

We recommend a 22.2V 3200–38700mAh30C 6S LiPo battery with EC5 connector for standard operation. 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 your battery.

4. Slide the canopy latch back and lift the back of the canopy to remove.

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 EC5 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.

* 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.

Center of Gravity (CG)

The CG location is measured from the leading edge of the wing at the root.

This CG location has been determined with the recommended Li-Po battery installed all the way forward in the battery compartment.

NOTICE: Install the battery in the aircraft, but do not arm the ESC while checking the CG. Personal injury may result.

75-85mm back from the leading edge at the wing root

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Transmitter and Receiver Binding / Switching ON and OFF SAFE Select

This product requires an approved Spektrum ™ DSM2 ® /DSMX ® compatible transmitter. Visit www.bindnfly.com for a complete list of approved transmitters.

The aircraft has an optional SAFE Select feature, which can be switched ON or OFF easily by binding in a specific manner as described below.

IMPORTANT: Before binding a transmitter, read the Transmitter Setup section of this manual to ensure that your transmitter is properly programmed for this aircraft.

Switching ON SAFE Select Binding Sequence

Install Bind Plug

Remove Bind Plug

RX in Bind Mode

Bind TX to RX

Bind Plug Installation

Switching OFF SAFE Select Binding Sequence

Install Bind Plug Remove Bind Plug

BIND PLUG

RX in Bind Mode

Bind TX to RX

Binding Procedure / Switching ON SAFE Select

I MPORTANT: The included AR636 receiver has been programmed for operation specifically for this aircraft. Refer to the receiver manual for correct setup if the receiver is replaced or is used in another aircraft.

CAUTION: When using a Futaba ® transmitter with a Spektrum DSM module, you must reverse the throttle channel and rebind. Refer to your Spektrum module manual for binding and failsafe instructions. Refer to your Futaba transmitter manual for instructions on reversing the throttle channel.

1. Make sure the transmitter is powered off.

2. Move the transmitter controls to neutral (flight controls: rudder, elevators and ailerons) or to low positions (throttle, throttle trim).*

3. Install a bind plug in the receiver bind port.

4. Place the aircraft level on its wheels, then connect the flight battery to the ESC. The ESC will produce a series of sounds. Three flat tones followed immediately by two ascending tones confirm that the LVC is set correctly for the ESC. The orange bind LED on the receiver will begin to flash rapidly.

5. Remove the bind plug from the bind port.

6. Take three steps away from the aircraft /receiver and then power ON the transmitter while holding the transmitter bind button or switch. Refer to your transmitter’s manual for specific binding instructions.

IMPORTANT: Do not to point the transmitter’s antenna directly at the receiver while binding.

IMPORTANT: Keep away from large metal objects while binding.

7. The receiver is bound to the transmitter when the orange bind light on the receiver stays orange. The ESC will produce a series of sounds. Three flat tones followed immediately by two ascending tones. The tones indicate the

ESC is armed, provided the throttle stick and throttle trim are low enough to trigger arming.

IMPORTANT: Once bound, the receiver will retain its bind settings for that transmitter until it has been intentionally changed, even when power is cycled ON and

OFF. Repeat the binding process as necessary.

SAFE Select ON Indication

Every time the receiver is powered ON the surfaces will cycle back and forth twice with a slight pause at neutral position to indicate that SAFE Select is switched ON.

The throttle will not arm if the transmitter’s throttle control is not put at the lowest position. If problems are encountered, follow the binding instructions and refer to the transmitter troubleshooting guide for other instructions. If needed, contact the appropriate Horizon Product Support office.

Binding Procedure / Switching OFF SAFE Select

I MPORTANT: The included AR636 receiver has been programmed for operation specifically for this aircraft. Refer to the receiver manual for correct setup if the receiver is replaced or is used in another aircraft.

CAUTION: When using a Futaba ® transmitter with a Spektrum DSM module, you must reverse the throttle channel and rebind. Refer to your Spektrum module manual for binding and failsafe instructions. Refer to your Futaba transmitter manual for instructions on reversing the throttle channel.

1. Make sure the transmitter is powered off.

2. Move the transmitter controls to neutral (flight controls: rudder, elevators and ailerons) or to low positions (throttle, throttle trim). *

3. Install a bind plug in the receiver bind port.

4. Place the aircraft level on its wheels, then connect the flight battery to the ESC.

The ESC will produce a series of sounds. Three flat tones followed immediately by two ascending tones confirm that the LVC is set correctly for the ESC.

The orange bind LED on the receiver will begin to flash rapidly. DO NOT remove the bind plug at this time.

5. Take three steps away from the aircraft /receiver and then power ON the transmitter while holding the transmitter bind button or switch. Refer to your transmitter’s manual for specific binding instructions.

IMPORTANT: Do not to point the transmitter’s antenna directly at the receiver while binding.

IMPORTANT: Keep away from large metal objects while binding.

6. The receiver is bound to the transmitter when the orange bind light on the receiver stays orange. The ESC will produce a series of sounds. Three flat tones followed immediately by two ascending tones. The tones indicate the

ESC is armed, provided the throttle stick and throttle trim are low enough to trigger arming.

7. Remove the bind plug from the bind port.

IMPORTANT: Once bound, the receiver will retain its bind settings for that transmitter until it has been intentionally changed, even when power is cycled ON and

OFF. Repeat the binding process as necessary.

SAFE Select OFF Indication

Every time the receiver is powered ON the surfaces will cycle back and forth once to indicate that SAFE Select has been switched OFF.

The throttle will not arm if the transmitter’s throttle control is not put at the lowest position. If problems are encountered, follow the binding instructions and refer to the transmitter troubleshooting guide for other instructions. If needed, contact the appropriate Horizon Product Support office.

* Failsafe

If the receiver loses transmitter communication, the failsafe will activate. When activated, failsafe moves the throttle channel to its preset failsafe position (low throttle) that was set during binding. All other channels move to actively level the aircraft in flight.

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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 clevis 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 clevises to center the control surfaces.

Control Surface Direction

Switch on the transmitter and connect the battery. Use the transmitter to operate the aileron and elevator controls. 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.

Aileron stick

Elevator stick

Rudder stick

Dual Rates and Control Throws

Depending on your experience level with electric ducted fan (EDF) jets, program your transmitter to set the rates and control throws to the values given. These values have been tested and are a good starting point to achieve successful flight.

After flying, you may choose to adjust the values for the desired control response.

Aileron

Elevator

Rudder

Flap Travel

First Time

EDF Jet Pilots

Low Rate p = 8mm q = 8mm p = 8mm q = 8mm

 = 8mm

 = 8mm

Intermediate

Pilots

High Rate

Advanced

Pilots

Low Rate High Rate p = 10mm q = 10mm p = 12mm q = 12mm

 = 14mm

 = 14mm p q p q





Half q = 22mm

Full q = 45mm

= 10mm

= 10mm

= 12mm

= 12mm

= 16mm

= 16mm p = 14mm q = 14mm p = 16mm q = 16mm

 = 21mm

 = 21mm

Control Horn and Servo Arm Settings

The table to the right shows the factory settings for the control horns and servo arms. These settings, in conjunction with the low rate transmitter settings, are intended for the first time electric ducted fan (EDF) jet pilot through the intermediate level pilot to help ensure a successful flight.

Fly the aircraft at these factory settings before making changes.

Aileron

First Time EDF Jet Through Intermediate Level Pilots

Horns Arms

Elevator

Rudder

After flying, or for advanced level pilots with EDF jet experience, you may choose to adjust the linkage positions as shown to increase control response.

Advanced Level Pilots

Horns Arms

All Surfaces

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In Flight Trimming

During your first flight, trim the aircraft for level flight at 3/4 throttle with flaps and gear up. Make small trim adjustments with your transmitter’s trim switches to straighten the aircraft’s flight path.

After adjusting 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.

3 Seconds

Flying Tips and Repairs

Consult local laws and ordinances before choosing a flying location.

Range Check your Radio System

Before you fly, range check the radio system. Refer to your specific transmitter instruction manual for range test information.

Oscillation

Once the AS3X system is active (after advancing the throttle for the first time), the control surfaces will react to aircraft movement. In some flight conditions oscillation may occur (the aircraft rocks back and forth on one axis due to overcontrol). If oscillation occurs, refer to the Troubleshooting Guide for more information.

Takeoff

Place the aircraft in position for takeoff (facing into the wind). Select low rates for first takeoff and gradually increase the throttle to full and steer with the nose wheel. Allow the model to accelerate to flying speed, then pull back gently on the elevator and climb to a comfortable altitude.

Flying

Always choose a wide-open space for flying. Due to the higher speeds of this aircraft, it does require more room to fly than average foam models. It is ideal for you to fly at a sanctioned flying field. If you are not flying at an approved site, always avoid flying near houses, trees, wires and buildings. You should also be careful to avoid flying in areas where there are many people, such as busy parks, schoolyards, or soccer fields.

In flight trimming

During your first flight, trim the aircraft for level flight at 3/4 throttle. Make small trim adjustments with your transmitter’s trim switches to straighten the aircraft’s flight path. After landing, adjust the linkages mechanically to account for trim changes and then reset the trims to neutral. Ensure the aircraft will fly straight and level with no trim or sub-trim.

Landing

For your first flights with the recommended battery pack (EFLB32006S30), set your transmitter timer or a stopwatch to 4 minutes. After 4 minutes, land the aircraft. Adjust your timer for longer or shorter flights once you have flown the model. If at any time the motor pulses, land the aircraft immediately and recharge the flight battery.

See the Low Voltage Cutoff (LVC) section for more details on maximizing battery health and run time.

Turn the aircraft into the wind and reduce the throttle. Extend the landing gear and flaps. The flaps will allow the aircraft to slow to a more manageable landing speed while still maintaining lift. Elevator trim may be necessary to maintain level flight with the addition of flaps. Use the throttle during the landing approach to control the rate of descent. Keep the wings level and the aircraft pointed into the wind.

As you approach the threshold of the runway and approximately 1 meter altitude, decrease the throttle and begin your flare by easing back on the elevator. Continue back pressure on the elevator to bring the aircraft down gently on the runway.

NOTICE: If a crash is imminent, reduce the throttle and trim fully. Failure to do so could result in extra damage to the airframe, as well as damage to the ESC and motor.

NOTICE: After any impact, always ensure the receiver is secure in the fuselage.

If you replace the receiver, install the new receiver in the same orientation as the original receiver or damage may result.

NOTICE: Crash damage is not covered under warranty.

NOTICE: When you are finished flying, never leave the aircraft in direct sunlight or in a hot, enclosed area such as a car. Doing so can damage the aircraft.

Low Voltage Cutoff (LVC)

When a Li-Po battery is discharged below 3V per cell, it will not hold a charge. The

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 pulses, showing that some battery power is reserved for flight control and safe landing.

Disconnect and remove the Li-Po battery from the aircraft after use to prevent trickle discharge. Charge your Li-Po battery to about half capacity before storage.

During storage, make sure the battery charge does not fall below 3V per cell. LVC does not prevent the battery from over-discharge during storage.

NOTICE: Repeated flying to LVC will damage the battery.

Tip : Monitor your aircraft battery’s voltage before and after flying by using a Li-Po cell voltage checker (DYNF0002, sold separately).

Repairs

Thanks to the EPO foam material in this aircraft, repairs to the foam can be made using virtually any adhesive (hot glue, regular CA, epoxy, etc). When parts are not repairable, see the Replacement Parts List for ordering by item number .

NOTICE: Use of CA accelerator on your aircraft can damage paint. DO NOT handle the aircraft until accelerator fully dries.

Post Flight

1 Disconnect the flight battery from the ESC (Required for Safety and battery life).

2 Power OFF the transmitter.

3 Remove the flight battery from the aircraft.

4 Recharge the flight battery.

5 Repair or replace all damaged parts.

6 Store the flight battery apart from the aircraft and monitor the battery charge.

7 Make note of the flight conditions and flight plan results, planning for future flights.

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Power Components Service

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.

B

A

D

E

F

G

I

J

H

C

K

L

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Troubleshooting Guide AS3X

Problem

Oscillation

Inconsistent flight performance

Incorrect response to the AS3X Control

Direction Test

Possible Cause

Damaged propeller or spinner

Imbalanced propeller

Motor vibration

Loose receiver

Loose aircraft controls

Worn parts

Irregular servo movement

Trim is not at neutral

Sub-Trim is not at neutral

Aircraft was not kept immobile for 5 seconds after battery connection

Incorrect direction settings in the receiver, which can cause a crash

Solution

Replace propeller or spinner

Balance the propeller. For more information, view John Redman’s propeller balancing video at www.

horizonhobby.com

Replace parts or correctly align all parts and tighten fasteners as needed

Align and secure receiver in fuselage

Tighten or otherwise secure parts (servo, arm, linkage, horn and control surface)

Replace worn parts (especially propeller, spinner or servo)

Replace servo

If you adjust trim more than 8 clicks, adjust the clevis to remove trim

No Sub-Trim is allowed. Adjust the servo linkage

With the throttle stick in lowest position. Disconnect battery, then reconnect battery and keep the aircraft still for 5 seconds

DO NOT fly. Correct the direction settings (refer to the receiver manual), then fly

Troubleshooting Guide

Problem

Aircraft will not respond to throttle but responds to other controls

Extra propeller noise or extra vibration

Reduced flight time or aircraft underpowered

Aircraft will not Bind

(during binding) to transmitter

Aircraft will not connect (after binding) to transmitter

Possible Cause Solution

Throttle not at idle and/or throttle trim too high

Throttle servo travel is lower than 100%

Throttle channel is reversed

Motor disconnected from ESC

Damaged propeller and spinner, collet or motor

Propeller is out of balance

Prop nut is too loose

Flight battery charge is low

Propeller installed backwards

Flight battery damaged

Flight conditions may be too cold

Battery capacity too low for flight conditions

Transmitter too near aircraft during binding process

Reset controls with throttle stick and throttle trim at lowest setting

Make sure throttle servo travel is 100% or greater

Reverse throttle channel on transmitter

Make sure motor is connected to the ESC

Replace damaged parts

Balance or replace propeller

Tighten the prop nut

Completely recharge flight battery

Install propeller with numbers facing forward

Replace flight battery and follow flight battery instructions

Make sure battery is warm before use

Replace battery or use a larger capacity battery

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

Bind switch or button not held long enough during bind process

Transmitter too near aircraft during connecting process

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

Power off transmitter and repeat bind process. Hold transmitter bind button or switch until receiver is bound

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

Bind plug left installed in bind port

Aircraft bound to different model memory

(ModelMatch TM radios only)

Flight battery/Transmitter battery charge is too low

Transmitter may have been bound to a different aircraft using different DSM protocol

Move aircraft and transmitter to another location and attempt connecting again

Rebind transmitter to the aircraft and remove the bind plug before cycling power

Select correct model memory on transmitter

Replace/recharge batteries

Bind aircraft to transmitter

12

Viper 70mm EDF

Motor power pulses then motor loses power

Problem

Control surface does not move

Controls reversed

Possible Cause Solution

Control surface, control horn, linkage or servo damage

Wire damaged or connections loose

Transmitter is not bound correctly or the incorrect airplanes was selected

Replace or repair damaged parts and adjust controls

Do a check of wires and connections, connect or replace as needed

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

Transmitter settings are reversed

ESC uses default soft Low Voltage Cutoff (LVC)

Weather conditions might be too cold

Battery is old, worn out, or damaged

Battery C rating might be too small

Perform the Control Direction Test and adjust the controls on transmitter appropriately

Recharge flight battery or replace battery that is no longer performing

Postpone flight until weather is warmer

Replace battery

Use recommended battery

Replacement Parts

Part #

EFL7750

EFL7775

EFL7701

EFL7702

EFL7703

EFL7704

EFL7705

EFL7706

EFL7707

EFLG7708

EFLG7709

EFL7710

EFL7711

EFL7712

EFL7713

EFL7714

EFL7715

SPMA380

SPMA380R

EFLA1070EC5

EFLM1850

FLG130

EFLG131

Description

Viper 70mm EDF BNF Basic

Viper 70mm EDF PnP

Fuselage: Viper 70mm

Main Wing Set: Viper 70mm

Vertical Stabilizer: Viper 70mm

Horizontal Stabilizer: Viper70mm

Cockpit: Viper 70mm

Front Landing Gear Set:Viper70mm

Main Landing Gear Set: Viper70mm

Front Landing GearSystem:Viper70

Main Landing Gear System:Viper70

Landing Gear Cover: Viper 70mm

Linkage Rod: Viper 70mm

Control Horns: Viper 70mm

Wheel Set: Viper 70mm

Screw Set: Viper 70mm

Decal Sheet: Viper 70mm

Servo: 9g digital metal gear

Servo: 9g digital metal gear

70A ESC, EC5

Motor 2860 KV1850 Yak 130

Nose Gear Retract Mechanism

Main Gear Retract Mechanism

Optional Parts

Part #

SPMAR636

SPMR12000

SPMR6750

SPMR8000

SPMR8100

SPMR9910

Description

AR636 6-Ch AS3X Sport Receiver iX12 12 Channel Transmitter Only

DX6 Transmitter Only MD2 G3

DX8 Transmitter Only MD2

DX8e 8CH Transmitter Only

DX9 Black Transmitter Only MD2

EN

13

EN

AMA National Model Aircraft Safety Code

Effective January 1, 2014

A. GENERAL

A model aircraft is a non-human-carrying aircraft capable of sustained flight in the atmosphere. 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 any additional rules specific to the flying site.

1. Model aircraft will not be flown:

(a) In a careless or reckless manner.

(b) At a location where model aircraft activities are prohibited.

2. M odel aircraft pilots will:

(a) Yield the right of way to all man carrying aircraft.

(b) See and avoid all aircraft and a spotter must be used when appropriate.

(AMA Document #540-D.)

(c) Not fly higher than approximately 400 feet above ground level within three

(3) miles of an airport, without notifying the airport operator.

(d) Not interfere with operations and traffic patterns at any airport, heliport or seaplane base except where there is a mixed use agreement.

(e) Not exceed a takeoff weight, including fuel, of 55 pounds unless in compliance with the AMA Large Model Aircraft program. (AMA Document

520-A.)

(f) Ensure the aircraft is identified with the name and address or AMA number of the owner on the inside or affixed to the outside of the model aircraft. (This does not apply to model aircraft flown indoors).

(g) Not operate aircraft with metal-blade propellers or with gaseous boosts except for helicopters operated under the provisions of AMA Document

#555.

(h) Not operate model aircraft while under the influence of alcohol or while using any drug which could adversely affect the pilot’s ability to safely control the model.

(i) Not operate model aircraft carrying pyrotechnic devices which explode or burn, or any device which propels a projectile or drops any object that creates a hazard to persons or property.

Exceptions:

• Free Flight fuses or devices that burn producing smoke and are securely attached to the model aircraft during flight.

• Rocket motors (using solid propellant) up to a G-series size may be used provided they remain attached to the model during flight. Model rockets may be flown in accordance with the National Model Rocketry Safety

Code but may not be launched from model aircraft.

• Officially designated AMA Air Show Teams (AST) are authorized to use devices and practices as defined within the Team AMA Program Document

(AMA Document #718).

(j) Not operate a turbine-powered aircraft, unless in compliance with the AMA turbine regulations. (AMA Document #510-A).

3. Model aircraft will not be flown in AMA sanctioned events, air shows or model demonstrations unless:

(a) The aircraft, control system and pilot skills have successfully demonstrated all maneuvers intended or anticipated prior to the specific event.

(b) An inexperienced pilot is assisted by an experienced pilot.

4. When and where required by rule, helmets must be properly worn and fastened.

They must be OSHA, DOT, ANSI, SNELL or NOCSAE approved or comply with comparable standards.

B. RADIO CONTROL

1. All pilots shall avoid flying directly over unprotected people, vessels, vehicles or structures and shall avoid endangerment of life and property of others.

2. A successful radio equipment ground-range check in accordance with manufacturer’s recommendations will be completed before the first flight of a new or repaired model aircraft.

3. At all flying sites a safety line(s) must be established in front of which all flying takes place (AMA Document #706.)

(a) Only personnel associated with flying the model aircraft are allowed at or in front of the safety line.

(b) At air shows or demonstrations, a straight safety line must be established.

(c) An area away from the safety line must be maintained for spectators.

(d) Intentional flying behind the safety line is prohibited.

4. RC model aircraft must use the radio-control frequencies currently allowed by the Federal Communications Commission (FCC). Only individuals properly licensed by the FCC are authorized to operate equipment on Amateur Band frequencies.

5. RC model aircraft will not operate within three (3) miles of any pre-existing flying site without a frequency-management agreement (AMA Documents #922 and #923.)

6. With the exception of events flown under official AMA Competition Regulations, excluding takeoff and landing, no powered model may be flown outdoors closer than 25 feet to any individual, except for the pilot and the pilot’s helper(s) located at the flight line.

7. Under no circumstances may a pilot or other person touch a model aircraft in flight while it is still under power, except to divert it from striking an individual.

8. RC night flying requires a lighting system providing the pilot with a clear view of the model’s attitude and orientation at all times. Hand-held illumination systems are inadequate for night flying operations.

9. The pilot of a RC model aircraft shall:

(a) Maintain control during the entire flight, maintaining visual contact without enhancement other than by corrective lenses prescribed for the pilot.

(b) Fly using the assistance of a camera or First-Person View (FPV) only in accordance with the procedures outlined in AMA Document #550.

(c) Fly using the assistance of autopilot or stabilization system only in accordance with the procedures outlined in AMA Document #560.

Please see your local or regional modeling association’s guidelines for proper, safe operation of your model aircraft.

14

Viper 70mm EDF

EN

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 WARRANTIES 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 CLAIM 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 immediately 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_render-servicecenter. 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/servicecenter_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.

10/15

Warranty and Service Contact Information

Country of Purchase

United States of America

European Union

Horizon Hobby

Horizon Service Center

(Repairs and Repair Requests)

Horizon Product Support

(Product Technical Assistance)

Sales

Horizon Technischer Service

Sales: Horizon Hobby GmbH

Contact Information servicecenter.horizonhobby.com/RequestForm/ [email protected]

877-504-0233 [email protected]

800-338-4639 [email protected]

+49 (0) 4121 2655 100

Address

1608 Interstate Drive

Champaign, IL 61822

Hanskampring 9

D 22885 Barsbüttel, Germany

15

EN

FCC Information

FCC ID: BRWDASRX15

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 to an outlet on a circuit different from that to which the receiver is connected.

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.

20 cm

NOTICE: Modifications to this product will void the user’s authority to operate this equipment.

This product contains a radio transmitter with wireless technology which has been tested and found to be compliant with the applicable regulations governing a radio transmitter in the 2.400GHz to 2.4835GHz frequency range.

Antenna Separation Distance

When operating your transmitter, please be sure to maintain a separation distance of at least 20 cm between your body (excluding fingers, hands, wrists, ankles and feet) and the antenna to meet RF exposure safety requirements as determined by FCC regulations.

This illustration shows the approximate 20 cm RF exposure area and typical hand placement when operating your transmitter.

IC Information

IC ID: 6157A-AMRX15

This device complies with Industry Canada licence-exempt RSS standard(s).

Operation is subject to the following two conditions:

(1) this device may not cause interference, and (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:

Viper 70mm EDF Jet BNF Basic (EFL7750)

Horizon Hobby, LLC hereby declares that this product is in compliance with the essential requirements and other relevant provisions of the RED and EMC

Directives.

A copy of the EU Declaration of Conformity is available online at: http://www.horizonhobby.com/content/support-render-compliance.

Viper 70mm EDF Jet PNP (EFL7775)

Horizon Hobby, LLC hereby declares that this product is in compliance with the essential requirements and other relevant provisions of the EMC Directive.

A copy of the EU Declaration of Conformity is available online at: http://www.horizonhobby.com/content/support-render-compliance.

Instructions for disposal of WEEE by users in the European Union

This product must not be disposed of with other waste. Instead, it is the user’s responsibility to dispose of their waste equipment by handing it over to a designated collections point for the recycling of waste electrical and electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, your household waste disposal service or where you purchased the product.

16

Viper 70mm EDF

EFL7750, EFL7775

©2018 Horizon Hobby, LLC.

E-Flite, Plug-N-Play, Bind-N-Fly, BNF, the BNF logo, DSM2, DSMX, EC5, AS3X, SAFE, the SAFE logo 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.

http://www.horizonhobby.com/

Created 6/18 57585