54
Direction of rotation of main rotor
In this line you enter the direction of rotation of the
main rotor:
„left“:
viewed from above, the main rotor rotates
anti-clockwise.
„right“: viewed from above, the main rotor rotates
clockwise.
Pressing
CLEAR
switches to “left”.
The program requires this information in order to set
up the mixers to work in the correct “sense”; this ap-
plies to the following mixers which compensate for ro-
tor torque and motor power:
»
Helicopter mixer
« menu:
Channel
1
tail rotor,
Tail
rotor
throttle,
Roll
tail rotor,
Roll
throttle,
Pitch-axis
tail rotor,
Pitch-axis
throttle.
right-hand rotation
left-hand rotation
Collective pitch min.
At this point you can set up the direction of operation
of the throttle / collective pitch stick to suit your pre-
ference. This setting is crucial to the correct functio-
ning of all the other options in the helicopter program
which affect the throttle and collective pitch function,
i.e. the throttle curve, idle trim, channel 1
tail rotor
mixer etc..
The meaning is as follows:
„forward“: Minimum collective pitch when the collec-
tive pitch stick (Ch1) is forward (away from
you);
„back“:
Minimum collective pitch when the collecti-
ve pitch stick (Ch1) is back (towards you).
Pressing
CLEAR
sets it to “forward”.
Note:
The Ch1 trim always affects the throttle servo only.
If you need to trim the collective pitch servo use the
procedure described in Example 3 on page 107.
Notes:
•
If you operate all your models using the same col-
lective pitch stick sense, you can select this preset
value in the global »
Basic settings
« menu (page
117). This preset is automatically adopted when
you open a free model memory with the “Heli” mo-
del type, but you can still change it to suit a particu-
lar model if you wish.
•
As standard what is known as the “throttle limit-
er” is set (see page 62); this limits the travel of the
throttle servo in the direction of maximum throttle,
acting separately from the collective pitch servos.
This point can be programmed in the »
Control ad-
just
« menu for Input 12.
Expo throttle limit
The “Throttle limit” function is described in the »
Con-
trol adjust
« menu (see page 62); note that an ex-
ponential curve can be assigned to it by setting the
rate of progression within the range -100% to +100%
using the rotary control. This is sensible if, for examp-
le, the throttle limiter is required to regulate the idle
setting at the same time. For further details on the
throttle limiter see the »
Control adjust
« menu.
Program description:
Base setup model
Collective pitch
Example of two exponenti-
al curves for the throttle limit,
using 100% servo travel:
solid line
:
negative expo values;
dotted line
:
positive expo values
0
2 0
4 0
6 0
8 0
1 0 0
1 5 0
%
0 2 0 4 0 6 0 8 0 1 0 0 %
Transmitter control travel
Throttle limit tr
a
v
el
Summary of Contents for MC-22S
Page 1: ...1 mc 22s GB mc 22s 3D Rotary Programming System Programming manual ...
Page 33: ...33 Digital trims ...
Page 55: ...55 Program description Base setup model ...
Page 77: ...77 Program description Flight phases ...
Page 89: ...89 Program description Mixers ...
Page 174: ...174 ...
Page 175: ...175 ...
Page 176: ...176 ...
Page 177: ...177 ...
Page 178: ...178 ...