GRAUPNER HoTT MC-16 Series Programming Manual page 126

"Gyro"
In5 GL fr –––
Thro GL fr –––
Gyro GL fr –––
Lim. GL Lv2 –––
nor mal
typ SEL
Most of the latest gyro systems not only feature infi-
nitely variable proportional gyro gain setting, but also
offer a choice of two separate types of gain mode on
the transmitter.
If the gyro in use also has this feature then this menu
option provides the opportunity to specify both a "nor-
mal" gyro effect as well as a "heading-lock mode" in
the "Offset" column within a range of ±125 %. Such a
specification can include a certain effect to fly normal,
slow flights with maximum stability or the reduction of
the gyro effect for fast circuit flights and aerobatics.
To proceed as described above, use flight phase
switching to enter different settings on the "Gyro" line.
Important notice:
The value of this option is identical to the offset
value set in the "Gyro offset" option of the »Heli-
copter mixer« menu, page 196. For this reason,
any changes made always affect the other menu
directly, and vice versa.
Beginning with these preset – static – flight phase-
specific settings, a transmitter control assigned to the
"Gyro" line, for example one of the middle console
sliders, can be used to vary the gyro effect around the
respective "offset point". The center point of the con-
trol corresponds to the setting specified by the offset.
If the transmitter control is moved from this center
point in the direction of full travel, gyro gain increases
proportionally; it diminishes when moved in the oppo-
site direction. This provides a fast and straightforward
method of adjusting gyro effect even in flight – e. g. to
126 Program description - Control adjust | Helicopter models
suit changing weather conditions – or to test-fly opti-
mal settings. Furthermore, the range of the gyro's ef-
0%
fect within transmitter control travel in both directions
0%
can be restricted by software.
0%
In this context, be sure to comply with the instruc-
0%
tions accompanying the gyro, otherwise there is a
risk the helicopter will be impossible to fly.
offset
mc-16
On the
as transmitter control for the gyro is one of the two
sliders on the centre console, or alternatively to install
one of the optional INC/DEC buttons on the
16
HoTT transmitter, as fitted to the
transmitter as standard. These buttons are virtually
ideal for this type of task, since – in contrast to a posi-
tion-related proportional control – their current position
is automatically stored, and is therefore reproducible
at any time, even after you change models:
In5
Thro
Gyro
Lim.
nor mal
Adjusting the gyro sensor
To achieve the maximum possible level of stabilization
for the helicopter with the gyro along the vertical axis,
observe the following:
• The controls should have as little friction and "play"
as possible.
• There should be no "spring" in the control linkage.
• Use a strong and – in particular – a fast servo.
When the gyro sensor detects a model rotation,
the faster its response – a corresponding corrective
change to tail rotor thrust – takes effect, the further
the gyro gain adjuster can be moved without causing
the tail of the model to start oscillating, and the bet-
ter the model's stability about its vertical axis. If the
HoTT transmitter the obvious choice
mc-
mc-20
HoTT
GL fr ––– 0%
GL fr ––– 0%
PH Cn6 ––– 0%
GL Lv2 ––– 0%
SEL
typ offset
response is slower, there is a risk that the model's tail
will start to oscillate even at low gyro gain settings.
Here, further reductions to gyro gain will need to be
made – either by using the default value under "Gyro"
or the associated transmitter control – to eliminate the
oscillation.
If the model is flying forward at high speed or hov-
ering in a powerful headwind, the net result of the
stabilizing effect of the vertical fin combined with the
gyro may also lead to an overreaction that once again
manifests itself through tail oscillation. To achieve
optimum gyro stabilization under all conditions, make
use of the option to adapt gyro effect with one of the
transmitter's proportional controls.