Temperature Adjustment - ROBBE Piezo Kreisel G 300 Notice De Montage Et D'utilisation

No.
8095
Piezo-Kreisel G 300
vacant channel is available for remote gyro gain adjustment. If this is the case sim-
ply leave the „Aux" connector (attached to the gyro) unconnected. Gyro sensitivi-
ty can now be adjusted proportionally within the range 0 - 100 % by rotating the
adjustor marked „Gain" on the gyro. Turn it clockwise to increase gain, and anti-
clockwise to reduce it.
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.
Connect the Piezo-Gyro G 300 between the tail rotor servo and the receiver as
shown in Sketch 1. In this variant the connector marked „Aux" is not connected.
5. General information
5.1 Model requirements
The high sensitivity of the gyro, the powerful response of the tail rotor and the high
speed with which the tail rotor reacts combine to place much higher loads than
usual on the tail of the model helicopter.
This in turn requires a torsionally rigid tail rotor drive system and a strong tail rotor
gearbox. We recommend rigid drive systems, as they are better able to absorb the
forces exerted by the rapid changes in load. The mechanical linkage to the tail
rotor must also be as free-moving and direct (minimum slop) as possible.

5.2 Temperature adjustment

Although the gyro system is temperature-compensated as far as possible using
the currently available solutions, it is still necessary for the gyro to be allowed to
adjust itself to the ambient temperature.
For best results we recommend that you leave the gyro switched on for about 5
minutes at the start of a flying session so that it can adjust to the surrounding tem-
perature. After this period switch the system off and then on again.
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