Helicopter
(HELI)
Section
– 91 –
Setting Up Throttle Hold
1. Press one of the
Up Down Edi
t
buttons until the
H0LD
window appears. The default is for the
function to be inhibited. To activate the throttle hold function, press the
Data –Decrease
key.
This will cause the
Inh
display to change to a -4% value with an
ON
or
OFF
display,
depending on the Flt. Cond. switch’s position.
2. Now you can adjust the throttle hold position with the
Data +Increase or –Decrease
keys,
anywhere between -50 and +50%. (To inhibit this feature, press the
Active/Inhibit (Clear) key
.)
HOLD + 10
%
ON
3. Check that your throttle goes to the desired hold position by flipping the Flt. Cond. switch
one way and the other. Adjust the number as needed. Be sure to choose an engine speed
that's fast enough to keep the engine from accidentally quitting but slow enough to not engage
the main rotor clutch.
THCV
— Throttle Curve
The throttle & pitch curves are tied to the position of the
collective stick, and are specified at five points labeled 1 through
5 below. These “curves” are really straight lines connecting the
settings at the five points, and are defined by assigning servo
movement percentages to five positions of the left stick: lowest =
Point 1, the 1/4-up stick position = Point 2, half-stick = Point 3,
3/4 position = Point 4, and top position = Point 5. With the
numbers as input as shown, the servo would move 50% of full
travel to one side at low collective stick position, and 50% of full
travel to the other side at high stick position.
Example Five-point Curve
100%
75%
50%
25%
0%
LOW
←
←←
←
Collective Stick
→
→→
→
HIGH
←
← ←
←
Servo Response
→
→→
→
12345
Curve Point
63%
50%
38%
25%
75%
You can get a linear response by making the five settings
line up as shown above. But if you want another shape, you’re
free to do it. You can “flatten out” or "soften" the curve around
hover as shown here. This is handy for making the control less
sensitive around hover.
5-Pt Curve Soft Near Hover
100%
75%
50%
25%
0%
LOW
←
←←
←
Collective Stick
→
→→
→
HIGH
←
← ←
←
Servo Response
→
→→
→
12345
Curve Point
60%
50%
40%
25%
75%
Shallower
slope in this
region
Setting Up The Throttle Curve
1. Press one of the
Up Down Edi
t
buttons until the
THCV
window appears. The default is for a
linear curve, a straight line from 0 to 100% passing through 50% at hover (center, point 3).
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