SRV. SPEED – SERVO SPEED
A-35
The X9303 2.4 system provides the ability to adjust the
speed of servos on each channel in both directions. The
speed may be adjusted downward (servo slowed) from its
normal speed but it cannot cause a servo to move faster
than its rated specifications. Furthermore, each servo can
have 2 sets of speeds in both directions that are Flight
Mode or switch selectable.
The servo speed function is very useful for scale models
with retractable landing gear and gear doors, since in
many instances the need for gear door sequencers can be
eliminated. If the gear door servos move at normal speed
and the landing gear servos move at a slower speed when
the gear is lowered, the gear doors will be open before
the landing gear begins to come down. In the opposite
direction, if the gear door servos move slowly and the
landing gear servos move at normal speed, the gear can
retract before the gear doors begin to close.
Note: Most mechanical retract servos are non-
proportional type servos that simply move from end
point to end point. These types of servos are not
adjustable in the servo speed function.
Servo speed can also be useful on the throttle channel.
The throttle servo can be slowed down such that the
engine will not flameout because the carburetor is opened
or closed too quickly when the throttle stick is jammed
from low to high and vise versa.
To adjust servo speed, highlight and select SRV. Speed
in the FUNC.LIST.
1. If there is to be a single set of servo speeds that are in
effect all of the time, make sure the display is showing
Pos0. If it is not, select Pos1 and change it to Pos0.
Highlight and select the channel and direction for each
servo that is to be adjusted. Once a direction for a servo is
selected, the servo speed may be set so the servo travels
from .176 seconds for 60 degrees of rotation all the way
up to 15 seconds for 60 degrees of rotation. Adjust the
speed of each servo until the desired speed is obtained.
The example below shows the throttle servo slowed down
so that it traverses 60 degrees in 1.25 seconds in both
directions. That is all that is required when there is only 1
set of servos speeds.
2. If there are to be 2 sets of servo speeds that are Flight
Mode or switch selectable you can select a switch
to control the servo speed and set each position as
desired.. If one set of values is set to NORM for
all channels, slowing of servos can be turned off
by selecting the position (Pos0 or Pos1) that has
the NORM values. Highlight and select Pos0 and
change it to Pos1 and then highlight and select the
channel and direction for each servo that is to be
adjusted. Once a direction for a servo is selected, the
servo speed may be set so the servo travels from .176
seconds for 60 degrees of rotation all the way up to 15
seconds for 60 degrees of rotation. Adjust the speed
of each servo until the desired speed is obtained.
Highlight and select Pos0 and then highlight and
select the channel and direction for each servo that is
to be adjusted. Switch between Pos0 and Pos1 to
view and adjust the 2 sets of values for each servo.
3. Scroll over to and select SW SELECT to identify
the Flight Mode and/or switch(es) that is to be used
to switch between the 2 sets of servo speeds. The
throttle may also be used to switch between differential
settings by highlighting and selecting THRO STK and
setting the percentage of throttle to the point where the
values are switched.
Note: Pos1 always has priority over Pos0. In
other words, if multiple switches are selected and
one of the switches is in its Pos1 position, then
all other switches are ignored and the Pos1 values
are in effect.
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