311
Programming examples - Helicopter models
Linearis. swashpl.
Swashplate type
no
1 Servo
Rotor direction
right
HELTYPE
Pitch min. rear
SEL
Both "Expo throttle lim." as well as "Thr. limit
warning", in bottom line of this display, are currently
of no interest.
By now, the servos should be plugged into the
receiver in the intended sequence:
Receiver power supply
Receiver power supply
13 14 T
15 16
S
77
8
9
10 11 12
Receiver power supply
Telemetry connection
Receiver power supply
free or aux. function
free or aux. function
SUMO / SUMI-connection
Receiver power supply
Receiver power supply
free or aux. function
free or aux. function
free or aux. function
free or aux. function
free or aux. function
free or aux. function
Tail rotor servo (gyro system)
Roll 1 servo
Pitch-axis 1 servo
free or speed governor
or aux. function
Roll 2 servo
free or aux. function
Throttle servo or speed controller
Gyro gain
Note:
Please note that on the newer Graupner-mc- and
mx- remote control systems, the fi rst pitch servo and
the throttle servo are swapped in comparison to older
systems.
Mix ratios and mix directions for swashplate pitch, roll
and nick servos are already pre-adjusted to +61 % in
the menu …
»Swashplate mixer« (page 208)
SWASH MIXER
Pitch
Roll
Pitch ax.
+61%
+61%
+61%
SEL
. If the swashplate mixer should not follow joystick
movements properly, fi rst change the mixing
directions from "+" to "-" before changing servo
directions in the menu …
»Servo adjustment« (page 102)
0%
100%Servo 1
Servo 2
Servo 3
Servo 4
Servo 5
Rev cent.
100%
150% 150%
– travel + – limit +
0%
100%
100%
150% 150%
0%
100%
100%
150% 150%
0%
100%
100%
150% 150%
0%
100%
100%
150% 150%
... This menu can also be used to adapt travel and
direction for individual servos. However, one must
attempt to retain 100 % servo travel so as to achieve
the best possible resolution and control accuracy. The
direction of travel is determined with "Rev." and, in
the process, make sure that the direction is correct.
The tail rotor servo must run so that the nose (!) of
the helicopter follows the tail joystick direction.
In the menu …
»Stick mode« (page 106)
Thr trim
Pitch/thr
Roll
Pitch ax
Tail rot.
Tr im
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
… the column "Tr. step" is used to set the increment
size of each "click" on the digital trim keys.
The C1 trimming only affects the throttle servo for
the helicopter. At this point there is no need to go
into the particulars of this trimming ("cut-off trim")
once again. Please read more about this on page 58.
(Thanks to digital trimming, trim values can be saved
automatically when a model change is affected. In
the
mc-20 HoTT system these can even be stored
automatically when a change of fl ight phase takes
place.).
An additional setting which is specifi c to helicopters
can also be made in this menu in which you determine
which function the trim slider on the pitch joystick
should have. This is accomplished by selecting the
"Throttle limit" setting in the "Throttle" line or leaving
it as it is. This roughly corresponds to trim for the
familiar idle trim function. If the trim indicator marker is
moved all the way forward by "turning" the trim wheel
(remember: "pitch min rear" = "throttle forward") the
throttle limit will later take over the throttle limit for
throttle enable seamlessly in the menu …
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