UNIVERSAL Helicopter
- 9 -
Der Pitch-Anteil für Servo 4 muß also umgepolt
werden.
Ausgehend von der Betriebsanzeige wird das so ge-
macht:
Button Effect and further steps
Menu 1, Servo adjustment, call up
travel / curve and open the servo field
(servo number flashes)
Select servo 4 with / or the digi-
adjustor
Open mixer input field (flashes)
Select the COLLECTIVE PITCH MIX
input with / or the digi-adjustor
Move the collective pitch stick fully forward and the
screen should look like this:
[JFEW@ii\NFIK/ZAU
-\V@QQiZAUiiii@YiiS
2iiiiiiiiiii2i5
2iiiiiiiiiii2?\i
The four vertical lines limit the on-screen display range for
the curves.
We have drawn in the diagonal connecting lines between
the three points so that the shape of the „curve“ is clearer.
The screen only shows the left and right end-points and the
centre point. The centre is marked by the double line
(equals sign).
We only need to reverse one mixer input here; these
are the steps required:
1. Press
The numeric value 100% starts flashing
(100% without prefix means +100%)
2. Press
The value changes to -100%, i.e. is reversed.
The change is reflected in the curve on the screen:
[JFEW@ii\NFIK/ZAU
-\V@QQiZAUiiii@YiiS
2iiiiiiiiiii2/5
2iiiiiiiiiii2?\i
The first point on the curve has jumped from -100% to
+100%, and the third point has done exactly the op-
posite. This completes the reversing process.
If other servos run in the wrong direction when a
collective pitch command is given, press the
button, select the appropriate servo and reverse the
COLL. PITCH MIX input.
Now check on the model that everything works cor-
rectly.
We will continue with ROLL
Preparation: set the stick and trim sliders for collective
pitch approximately to centre to avoid confusing side-
effects.
Now look again at our drawing of the swashplate. You
can easily see that servos 2 and 4 are responsible for
ROLL movements, and that only those servos should
move. Servo 3 must not move when the ROLL stick is
operated.
The first step is therefore to switch off the ROLL
input in the mixer for servo 3.
We assume that you have not yet left the menu for
reversing mixer inputs.
Three steps are required:
1. Press the button
The servo number flashes
Select servo 3 with /
2. Press the g button
The code number for the mixer input flashes.
Select the V-ROLL input with /
The „V“ stands for virtual and indicates that
this mixer input has been prepared to cope
with virtual rotation of the swashplate. How-
ever, for our example we will not use this fea-
ture.
3. Press the button
The word ON flashes.
Switch it OFF by pressing the button.
Servo 3 now has no ROLL input. Move the ROLL stick
and check that this is the case.
At this stage we can check the direction of move-
ment of servos 2 and 4 and correct them if neces-
sary.
Move the ROLL stick to the left and watch how the
swashplate responds. As already mentioned, servo 2
should move down and servo 4 up. If not, you need to
use the reverse facility.
We have already practised the procedure with the
COLLECTIVE PITCH inputs:
1. Press the button
The servo number flashes.
Select servo 2 or 4 with /
2. Press the button
The code number for the mixer input flashes.
Select the input V-ROLL with /.
3. Press the button
The numeric value to the right of the screen (-
100%, 0% or 100%) should now flash.
4. Press the button
This reverses the V-ROLL mixer input for the se-
lected servo.
Repeat these four steps for the second servo if nec-
essary.
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