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7

Battery Installation and ESC Arming

Center of Gravity (CG) 

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.

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

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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