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Box Contents

Table of Contents

Specifications

40.5 in (1025mm)

43.3 in (1100mm)

~67–70 oz 
(~1899–1984g)

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/.

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

Quick Start Information

Transmitter Setup

1.  Blank (Acro) Model
2.  Wing Type: 1 Aileron, 1 Flap
3.  Servo Reversing: Normal
4.  Travel Adjust (All Surfaces): 100%

Dual Rates*

High Rate

Low Rate

Aileron

p

 = 10mm

q

 = 10mm

p

 = 8mm

q

 = 8mm

Elevator

p

 = 12mm

q

 = 12mm

p

 = 8mm

q

 = 8mm

Rudder

 = 14mm

 = 14mm

 = 8mm

 = 8mm

Flap Travel

Half 

q

 = 22mm

Full 

q

 = 45mm

EXPO 

(Soft center)

High Rate

Low Rate

Aileron

10%

0%

Elevator

10%

0%

Rudder

10%

0%

Center of Gravity (CG)

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

the wing root

Flight Timer Setting

4 minutes

Motor:

 Motor 2860 KV1850 (EFLM1850)

Installed

Installed

ESC:

 70A Brushless Switch Mode (EFLA1070EC5)

Installed

Installed

Servos:

 (7) (SPMA380, SPMA380R)

Installed

Installed

Retracts:

 Main and Nose Gear (EFLG130, EFLG131)

Installed

Installed

Receiver: 

Spektrum

 AR636A 6-Channel Sport Receiver 

(SPMAR636)

Installed

Required to 

Complete

Recommended Battery:

 22.2V 3300–3800mAh 30C 6S 

LiPo with EC5 connector

Required to 

Complete

Required to 

Complete

Recommended Battery Charger:

 

6-cell Li-Po battery balancing charger

Required to 

Complete

Required to 

Complete

Recommended Transmitter:  

Full-Range 2.4GHz with Spektrum

 DSM2

®

/DSMX

®

 

technology and adjustable dual rates

Required to

Complete

Required to

Complete

*  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.

Summary of Contents for Viper 70mm EDF

Page 1: ...Instruction Manual Bedienungsanleitung Manuel d utilisation Manuale di Istruzioni SAFE Select Technology Optional Flight Envelope Protection...

Page 2: ...al prior to assembly setup or use in order to operate correctly and avoid damage or serious injury As the user of this product you are solely responsible for operating in a manner that does not endang...

Page 3: ...eron 1 Flap 3 Servo Reversing Normal 4 Travel Adjust All Surfaces 100 Dual Rates High Rate Low Rate Aileron p 10mm q 10mm p 8mm q 8mm Elevator p 12mm q 12mm p 8mm q 8mm Rudder 14mm 14mm 8mm 8mm Flap T...

Page 4: ...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 in...

Page 5: ...through the vertical tail and into the fuselage Do not over tighten the screws Horizontal Tail Installation 1 Connect both elevator servo connectors to the extensions in the fuselage labeled ELEV Feed...

Page 6: ...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...

Page 7: ...tor 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 b...

Page 8: ...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 transm...

Page 9: ...p ensure a successful flight Fly the aircraft at these factory settings before making changes Depending on your experience level with electric ducted fan EDF jets program your transmitter to set the r...

Page 10: ...tend 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 t...

Page 11: ...aft 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...

Page 12: ...ropeller Prop nut is too loose Tighten the prop nut Reduced flight time or aircraft underpowered Flight battery charge is low Completely recharge flight battery Propeller installed backwards Install p...

Page 13: ...6750 DX6 Transmitter Only MD2 G3 SPMR8000 DX8 Transmitter Only MD2 SPMR8100 DX8e 8CH Transmitter Only SPMR9910 DX9 Black Transmitter Only MD2 Problem Possible Cause Solution Control surface does not m...

Page 14: ...s 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...

Page 15: ...ice 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...

Page 16: ...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 prot...

Page 17: ...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 an...

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