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Horis User Manual
2. Installation & Maintenance
and pitch. When a coordinated flight is resumed, the false roll and
pitch will vanish after some time (about 30 secs).
Sustained turns do not harm the indication as long the coordinated
flight is maintained. Some minor deviation is obtained in very steep
turns – steeper than 50 . The main reason for this is that heading
rate is so fast that GPS track is lagging behind and corrective yaw
measurements are slightly incorrect. This effects all three angles.
Aerobatics will make roll, pitch and yaw useless pretty quickly as
they violate coordinated flight principle. Once coordinated flight
is resumed, the angles will stabilize around correct values. Typical
time required is 1-2 minutes, while almost correct angles shall be
established after 30 seconds.
2
Installation & Maintenance
Horis requires a standard size 57/80 mm hole in the instrument panel.
Position of the hole must ensure good access for knob operations and
it must be always visible from the pilot's perspective.
2.1
LCD Display Damage Warning
LCD Display can be damaged during the installation. This happens
when mounting screw reaches the LCD display. We strongly advise
you to use only screws provided with the instrument. Also make sure
that there is at least 1.5 mm spacing between the screw head and Ho-
ris mask. This means that for screws provided with the instrument,
minimal instrument panel thickenss must be at least 1.5 mm. (This
also means that even when original screews are used, LCD can be
broken due to a too thin panel.) Figure 1 illustrates the danger and
Figure 2 shows an example.
© Kanardia 2021
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