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9

Control Surface Direction

Dual Rates and Control Throws

Control Horn and Servo Arm Settings

Control Surface Centering

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.

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. 

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.

First Time 

EDF Jet Pilots

Intermediate 

Pilots

Advanced 

Pilots

Low Rate

High Rate

Low Rate

High Rate

Aileron

p

 = 8mm

q

 = 8mm

p

 = 10mm

q

 = 10mm

p

 = 10mm

q

 = 10mm

p

 = 14mm

q

 = 14mm

Elevator

p

 = 8mm

q

 = 8mm

p

 = 12mm

q

 = 12mm

p

 = 12mm

q

 = 12mm

p

 = 16mm

q

 = 16mm

Rudder

 = 8mm

 = 8mm

 = 14mm

 = 14mm

 = 16mm

 = 16mm

 = 21mm

 = 21mm

Flap Travel

Half 

q

 = 22mm 

Full 

q

 = 45mm

Aileron stick

Elevator stick

Rudder stick

First Time EDF Jet Through Intermediate Level Pilots

Horns

Arms

Aileron

Elevator

Rudder

Advanced Level Pilots

Horns

Arms

All Surfaces

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.

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.

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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