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" Gyr7"
I5
GL
8
7
0%
+111%
Thr6
GL
fr
---
0%
+100%
Gyr7
GL
fr
---
0%
+100%
I8
GL
fr
---
0%
+100%
Normal
TYP
Offset
– travel +
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
"normal" gyro effect as well as a "heading-lock mode"
in the "Offset" column within a range of ±125 %.
Such a specifi cation can include a certain effect to
fl y normal, slow fl ights with maximum stability or the
reduction of the gyro effect for fast circuit fl ights and
aerobatics.
To proceed as described above, use fl ight 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
»Helicopter mixer« menu, page 185. For this
reason, any changes made always affect the
other menu directly, and vice versa.
Beginning with these preset – static – fl ight phase-
specifi c settings, a transmitter control assigned to the
"Gyr7" 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
control corresponds to the setting specifi ed 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
116 Detail program description - Control adjust | Helicopters
in the opposite direction. This provides a fast and
straightforward method of adjusting gyro effect even
in fl ight – e.g. to suit changing weather conditions – or
+88%
0.0 0.0
to test-fl y optimal settings. Furthermore, the range
+100%
0.0 0.0
of the gyro's effect within transmitter control travel in
+100%
0.0 0.0
both directions can be restricted by software.
+100%
0.0 0.0
In this context, be sure to comply with the
instructions accompanying the gyro, otherwise
–time+
there is a risk the helicopter will be impossible to fl y.
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 better
the model's stability about its vertical axis. If the
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 fl ying forward at high speed or
hovering in a powerful headwind, the net result of the
stabilizing effect of the vertical fi n 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.
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