User manual

185Program description - Wing mixers
AI
FL
FL
AI
Servo 1
Servo 9
You can assure yourself that this works as stated
by accessing the »Servo display« menu, accessi-
ble from almost any menu level with a brief simul-
taneous tap on the  keys on the left four-way
button, see page 274:
1
3
5
7
0%
0%
9
11
0%
0%
2
4
6
8
0%
0%
0%
0%10
12
0%
0%
+100%
+100%
If this relatively simply variant should prove impos-
sible for whichever reasons, then the alternative is
a solution with two free mixers – and potentially in-
volving the »Mix-only channel« menu, see page
216, which is available as standard on the mc-
20 HoTT transmitter only. and potentially involving
Note:
On the
mc-16 HoTT transmitter this feature can
be unlocked as an extra-cost option.
In either case, however, the airbrake travels must
then be fine-tuned on the »Servo adjustment«
menu, page 112.
D.red (Differential reduction)
Elevat curve
Brake settings
AILE
Crow
D.red
0%
0%
0%
0%
0%
0%
FLAP FLAP2
normal
Earlier, we discussed the problems with the butterfly
(crow) configuration. Namely: that with the use of
aileron differential, the aileron effect can be strongly
(negatively) affected by the aileron elevation. This is
firstly because further deflection of the one aileron
upwards is (almost) no longer possible and secondly
because the downward-deflected aileron – depend-
ing on the elevation and degree of differential con-
figured – is often unable to achieve even its “normal”
position.
To be able to restore the effect of the aileron altered
in this way as far as possible, you should ensure that
you make use of the automated “Differential reduc-
tion” feature. This feature continuously reduces the
degree of aileron differential as the airbrake system
is extended. The feature is configurable and can even
be set to suppress differential entirely.
A value of 0 % means that the “aileron differential” set
at the transmitter remains fully in force. An entry that
equals the % value set for aileron differential means
the differential is fully eliminated once the butterfly
function is at maximum travel, i. e. with flaps fully
extended. Setting a reduction value greater than the
aileron differential configured will eliminate the latter
even before the full travel of the airbrake stick.
Values can be set in the range 0 to 150 %.
A simultaneous tap on the  or  keys of the
right four-way button (CLEAR) will reset a changed
value in a given active (inverse video) field back to
0 %.
Elevat curve (Brake  elevator)
Elevat curve
Brake settings
Crow
D.red
0%
0%
0%
0%
0%
0%
normal
If the airbrake control – to be set to 1, 7, 8 or – if
present – 9 on the “Brake Offset” line of the »Model
type« menu, page 105 – is used to extend the flaps
as described previously for the “Brake settings” menu,
this will often have a negative effect on the aircraft
model’s airspeed. This mixer can be used to compen-
sate this type of effect by applying a corrective value
to the elevator.
A brief tap on the center SET key of the right four-way
button will switch to the display screen shown below:
Input
Output
Point
?
–100%
0%
0%
Brake
Ele
Curve
off
normal
Setting notices for “Elevat curve”
The offset set in the »Model type« menu, page 105,
affects this mixer:
The vertical line on the display that indicates the posi-
tion of the airbrake control only moves from the edge
of the graph when the configured offset is exceeded.
In doing so, airbrake control travel is automatically
expanded back to 100 %, as described in the »Model
type« menu.
Accordingly, the mixer’s neutral point always lies on
the left edge, independently of the offset configured.
Now adjust the elevator curve in the direction of the
opposite end-point in accordance with requirements.