EN
Viper 70mm EDF
10
Control Surface Direction
Dual Rates and Control Throws
Control Surface Centering
Control Horn and Servo Arm Settings
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.
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 fl ight.
After fl ying, 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
= 8mm
= 8mm
= 10mm
= 10mm
= 10mm
= 10mm
= 14mm
= 14mm
Elevator
= 8mm
= 8mm
= 12mm
= 12mm
= 12mm
= 12mm
= 16mm
= 16mm
Rudder
= 8mm
= 8mm
= 14mm
= 14mm
= 16mm
= 16mm
= 21mm
= 21mm
Flap Travel
Half
= 15mm
Full
= 45mm
Aileron stick
Elevator stick
Rudder stick
After assembly and transmitter setup, confi rm 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.
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 fi rst time electric ducted fan (EDF) jet pilot through the
intermediate level pilot to help ensure a successful fl ight.
Fly the aircraft at these factory settings before making changes.
First Time EDF Jet Through Intermediate Level Pilots
Horns
Arms
Aileron
Elevator
Rudder
Advanced Level Pilots
Horns
Arms
All Surfaces
After fl ying, or for advanced level pilots with EDF jet experience, you may choose
to adjust the linkage positions as shown to increase control response.
