E-flite UMX Beast BNF - Manual (Page 8)

8
EN
In the event of an accident or before first flights, check to
make sure the flight control surfaces are centered. It is much
better to do this mechanically and not use sub-trims due to the
mechanical limit of linear servos.
1. Make sure the transmitter’s trims are centered, and if your
transmitter has them, sub-trims are set to 0.
2. Check to see if any of the flight control surfaces are not
centered.
3. If the surface is not centered, use a pair of pliers and carefully
lengthen or shorten the pushrod by bending the U-shape in the pushrod.
The pictures here show pushrod positions chosen
for the most balanced aerobatic response. Aircraft
control is more difficult when pushrods are in
other positions. Changing this configuration could
dramatically affect the handling of the airplane.
Control Centering
We recommend using a DSM2 radio capable of dual rates and expo due to the aerobatic capabilities of the
Beast®. The settings below are recommended starting settings.
Note: The DX5e transmitter is not recommended
Note: We do not recommend that a beginner fly the Beast.
NOTICE: DO NOT SET YOUR TRANSMITTER ATV OVER 100%. If the ATV is set over 100% it will not result in
more control movement, and it will overdrive the servo and cause damage.
CAUTION: The installation positions of the pushrods and clevises directly affect aircraft response.
When these are incorrectly connected for the pilot’s skill level, unexpected aircraft response to con-
trols can result in unintended crash damage to the aircraft.
Dual Rates and Expo
Pushrod Settings on Control Horns
Bending pushrods
Rudder control horn
Aileron control horn
Elevator control horn
Dual Rates High Low Expo High Low
Aileron 100% 60% Aileron 55% 30%
Elevator 100% 50% Elevator 45% 15%
Rudder 100% 70% Rudder 45% 30%