E-flite UMX F4U Corsair RTF with AS3X - Manual (Page 10)

10
EN
Before the fi rst fl ights, or in the event of an
accident, make sure the fl ight control surfaces
are centered. Adjust the linkages mechanically if
the control surfaces are not centered. Use of the
transmitter sub-trims may not correctly center the
aircraft control surfaces due to the mechanical
limits of linear servos.
1. Make sure the control surfaces are neutral
when the transmitter controls and trims are
centered. The transmitter sub-trim must
always be set to zero.
2. When needed, use a pair of pliers to carefully
bend the metal linkage (see illustration).
3. Make the U-shape narrower to make the
connector shorter. Make the U-shape wider
to make the linkage longer.
Centering Controls After First Flights
For best performance with AS3X, it is important
that excessive trim is not used. If the aircraft
requires excessive transmitter trim (4 or more
clicks of trim per channel), return the transmitter
trim to zero and adjust the linkages mechani-
cally so that the control surfaces are in the fl ight
trimmed position.
Control Centering
Control Horn Settings
The table to the right shows the factory settings for
the control horns. Fly the aircraft at factory settings
before making changes.
After fl ying, you may choose to adjust the linkage
positions for the desired control response.
CAUTION: When these are incorrectly
connected for the pilot’s skill level, unexpected
aircraft response to controls can result. This can
cause damage to the aircraft and personal injury.
Aileron Elevator Rudder
Dual Rates
To obtain the best fl ight performance, we
recommend using a DSM2/DSMX radio capable
of adjustable Dual Rates. The suggested settings
shown here are the recommended starting settings.
Adjust according to the individual preferences after
the initial fl ight.
NOTICE: Do not set your transmitter travel adjust
over 100%. If the TRAVEL ADJUST is set over
100%, it will not result in more control movement, it
will overdrive the servo and cause damage.
It is normal for linear servos to make signifi cant
noise. The noise is not an indication of a faulty
servo.
Tip: For the fi rst fl ight, fl y the model in low rate.
Dual Rate
High Low
Aileron 100% 70%
Elevator 100% 70%
Rudder 100% 70%