Throttle Trim Lever Function
Hovering Throttle Lever
Throttle Curve Exponential
H-24
The throttle trim lever is only active when the flight mode
switch is in the normal position. The throttle trim is used
to increase or decrease the engine power when the flight
mode switch is in the Normal mode. The throttle trim lever
has no effect on flight modes 1, 2, 3, 4, or in throttle hold.
Note: Making changes to the throttle trim lever does
not change the input values for any of the points on
the throttle curve; it merely makes adjustments to the
engine idle speed position.
The Hovering Throttle lever increases or decreases the
engine output power for the middle three points set for
the throttle curve. As shown in the figure below, use of
the hovering throttle lever shifts the curve upward or
downward parallel with the original curve. Therefore,
operation of the hovering throttle knob does not cause
any change to the original settings of the throttle curve.
The throttle trim range will affect the throttle curve as
shown. The adjustable range of output using the hovering
throttle lever is approximately +/-15 points as shown in
the diagram below.
Note: The Hovering Throttle has no effect on flight
mode switch positions 1 and 2.
With the X9303 2.4 system, individual throttle curves
are selectable to be either straight (linear) or curved
(exponential) setting. With the exponential function on,
you will notice that any sharp angles of the throttle
curve will become more “rounded” or “smooth”,
creating more equal throttle servo movement during
the entire curve range.
Accessing the Throttle Curve Exponential
Function
1. From the Throttle Curve function, press the
Channel key until “EXP” appears at the center of the
LCD screen.
2. Highlight the EXP OFF with the Selector. Press the
Selector to change the display from OFF to ON.
3. To exit the Throttle Curve function, move the Selector
to highlight LIST and press.
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