GRAUPNER mx-12 Hott, Programming Manual

Page: 83 / 200

83 Program description: base settings - model helicopter
buttons of the right-hand touch-key:
“1 servo”:
The swashplate is tilted by one roll servo
and one pitch-axis servo. Collective pitch
is controlled by one separate servo.
The “ Swashplate mixer ” menu point is
suppressed in the multi-function menu if
you select “1 servo” as the swashplate
type. This is because model helicopters
with only one collective pitch servo are
controlled WITHOUT transmitter mixers
for the swashplate functions collective
pitch, pitch-axis and roll.
“2 servo”: The swashplate is moved axially by two
roll servos for collective pitch control;
pitch-axis control is de-coupled by a
mechanical compensating rocker.
“3sv(2rol)”: A symmetrical three-point swashplate
linkage using three linkage points ar-
ranged equally at 120°, actuated by one
pitch-axis servo (front
or rear) and two
roll servos (left and right). For collective
pitch control all three servos move the
swashplate axially.
“3sv(140)”: Asymmetrical three-point swashplate link-
age using three linkage points, connected
to one pitch servo (rear) and two roll
servos (front left and right). For collective
pitch control all three servos move the
swashplate axially.
“3sv(2nic)”: A symmetrical three-point linkage as
above, but rotated through 90°, i. e. one
roll servo on one side, and two pitch-axis
servos front and rear.
“4sv(90)”: Four-point swashplate linkage using two
roll and two pitch-axis servos.
Simultaneously pressing the  or  buttons of the
right-hand touch-key ( CLEAR ) resets the swashplate
type to “1 servo”.
Swashplate type: 1 servo
2
Swashplate type: 2 servos
2
1
Swashplate type: 3 servos (2 roll)
3
1
2
Swashplate type: 3 servos (140°)
3
1
2
Swashplate type: 3 servos (pitch-axis)
3
2
1
Swashplate type: 4 servos (90°), 2 pitch / 2 roll
2
5
1
3
Note:
With the exception of the “1 servo” pre-set, the swash-
plate mixer ratios are set in the “
Swashplate mixers
”
menu; see page 132.
Cut off
The auto-rotation settings of the
mx-16
HoTT trans-
mitter’s Helicopter program include a facility for defining
a “motor OFF” position for the throttle servo or speed
controller for use in an emergency; see the programming
suggestion on page 180. However, you may wish to set
an idle position instead of an (emergency) OFF position
in the “Throttle” line of the “
Helimix
” menu, perhaps in
order to avoid having to re-start the engine after every
practice auto-rotation landing. This effectively circum-
vents the “motor cut” facility, but there is an alternative
method of setting up an emergency OFF system: this is
the “Motor stop” option, which is described in the follow-
ing section.
If you select “front / rear” in the “Collective pitch min.”