ROBBE 3D GYRO Notice De Montage Et D'utilisation page 10

Caution: This gyro operates on a new principle. Please be sure to read the
instructions before using the system for the first time.
1. Foreword:
The robbe 3-D gyro is a precision gyro system of revolutionary design based on a piezo
sensor, and is suitable for fixed-wing model aircraft and helicopters.
This modern piezo-gyro provides two different modes of operation:
· Normal mode
In this mode the gyro stabilises the aircraft around one major axis (e.g. tail rotor), as with
earlier types of gyro system. If an external influence such as a gust of wind, or a rapid chan-
ge in rotational speed or collective pitch pushes the model out of its intended position, then
the piezo-sensor picks up and measures the change, converts it into a compensatory sig-
nal and passes it to the tail rotor servo which then carries out the necessary corrective
action.
· Heading Hold mode
Heading Hold means „maintaining direction". In this mode the 3-D gyro works primarily as
a conventional gyro, but at the same time the unit „remembers" the current position of the
model. If it is then pushed out of position around the gyro axis by an external influence such
as wind etc., the electronic circuitry calculates the total deviation and causes the tail rotor
to move the model back into its original position. In practice this process of returning the
helicopter to its original position is completed
so quickly that the deviation hardly seems to
occur at all. The model stays rock-solid in its
intended position as if „nailed" to the sky.
Moreover this is true without any regard of the
model's attitude, i.e. if its heading is cross-
wind, or with a tail-wind, or even if it is inverted,
under all circumstances the 3-D gyro attempts
to maintain this position.
Note:
If you wish to achieve maximum performance
the 3D-gyro should always be operated in con-
junction with a very fast tail rotor servo. Of
course, servos of normal transit speed can still
be used, but the stabilisation effect will not be
quite as perfect as with a super-fast servo.
Recommended servos:
4.8 Volt power supply (4 NC)
S 9203 servo Order No. F 1264
6 Volt power supply (5 NC)
S 9402 servo Order No. F 1253
3D GYRO english
10
Ready Rev Gain
3D
Servo
GYRO
Aux
Piezo Gyro with
Headling Hold
No. 8065
Rx
Made in Germany
1
2
3
Receiver
4
5
6
7
8
Sketch 1
No.
8065
Ch. 4
Ch. 5