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Program description - Control adjust | Helicopter models
As already explained on page 116, when "Thr AR" is
selected in the "Pitch/thr" line of the …
»Stick mode« (page 116)
Pitch/thr
Roll
Pitch ax
Tail rot.
Tr i m
0.0s
Tr. step – time +
global
0.0s
global
0.0s
global
0.0s
0.0s
0.0s
0.0s
0.0s
4
4
4
4
Thr AR
… menu then digital trim of the throttle/pitch stick is
only active for the «Autorotation» flight phase. As a
consequence, the motor's idle speed cannot be regu-
lated in the "normal" flight phases with the C1 trim
control. To ensure the availability of sufficient setting
options, use of the "Expo throttle limiter" is recom-
mended.
The exponential curve characteristic offered by the …
»Helicopter type« (page 98)
Linearis. swashpl.
no
Rotor direction
right
HELTYPE
Pitch min. rear
SEL
Expo throttle lim. 0%
… menu's sub-menu can be used to alter the control
behaviour of the throttle limit control such that the lat-
ter provides sufficiently sensitive regulation of the idle
setting and can also stop the motor.
Throttle limit in combination with "Thr AR" in the »Stick mode«
menu
In this case, with a completely closed throttle lim-
iter – in contrast to the previously described setting –
use the »Control adjust« menu set the "-" side of
the column labelled "- travel +" for the "Tl16" line such
that the throttle limiter fully closes the carburettor, i. e.
the motor is safely switched off at this control position.
Following this, move the throttle limit control to its
centre point and change the % value of the "Expo
thro lim." line in the »Helicopter type« menu, page
98, until the carburettor is in a position suitable for
starting the motor. Now start the motor, and adjust the
value if necessary until the motor idles reliably in this
throttle limit control position.
The value for the plus side of the "- travel +" column
should be increased, as described before, to +125 %
so that the full-throttle position of the throttle servo is
also reliably released from the throttle limiter.
Finally, set an asymmetrical time delay of, say 4.0 sec-
onds, so the motor also picks up speed gradually even
if the side proportional slider is pushed forward too
quickly. Select the time preset to correlate to how far
the carburettor opens up at the minimum collective
pitch position. The value set is to be optimised by test-
ing.
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