ROBBE Piezo Kreisel G 300 Notice De Montage Et D'utilisation page 11

- Fit the output arm on the tail rotor servo in such a way that the arm is exact-
ly at 90° to the pushrod (or as close as possible to 90°).
- Connect the pushrod to the outermost hole at the tail rotor gearbox.
- Move the tail rotor stick to full travel.
- Connect the pushrod to one of the outer holes in the servo output arm. Aim
for maximum linear pushrod movement, with the proviso that the linkage
must not stall the servo (mechanical obstruction) at full travel.
- Check the direction of servo travel. Move the tail rotor stick to the right and
watch the tail rotor:
- The leading edge of the tail rotor blades should now move to the left; if not,
reverse the tail rotor servo at the transmitter.
- Check the direction of operation of the gyro (REV switch). Swing the tail
boom to the right: the leading edge of the tail rotor blades should now move
to the left. If not, operate the „REV" switch on the Piezo-Gyro G 300. Note:
if you use the „REV" switch on the gyro the change will not take effect until
you switch the gyro off and then on again. All stated directions are as seen
from the tail of the model looking forward.
You can now adjust the sensitivity (gain) of the gyro from the transmitter. Slider 5
provides proportional control over the range 0 - 100%.
Note:
in contrast to previous gyro systems, any reduction in the gain of the Piezo-Gyro
G 300 simultaneously reduces servo travel, since lower gyro sensitivity calls for
less tail rotor travel in order to obtain the same control response.
The gyro also features an exponential control characteristic curve. Values below
30% are not of practical usefulness and should not be set in any case because
they would reduce the tail rotor control travel to a dangerous extent.
For initial familiarisation flights with the new gyro we suggest the following
basic settings:
Tail rotor servo travel (ATV)
Gyro gain (ATV):
4.2 Connecting the Piezo-Gyro G 300 with manual gain adjustment on the
gyro
If your radio control system has relatively few channels you may well find that no
Piezo-Kreisel G 300
approx. 70%
approx. 70%
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No.
8095