13.
Checking the Gyro
The gyro system is installed and connected in the model helicopter ex works. The system recognises uncontrolled ro-
tating movements of the model helicopter around the vertical axis (main rotor shaft) by a sensor; this may be caused,
e.g, by a gust of wind.
The tail rotor servo is controlled via the integrated electronics so that the rotating movements are already countered
when starting. This way, the tail of the helicopter always remains stably aligned with the current direction in any flight
situation.
Control commands from the transmitter are passed on to the tail servo uninfluenced by the gyro system.
a) Connecting and Installing the Gyro
The gyro was switched between the receiver and the tail
servo at the factory installation of the model helicopter
(see sketch figure 18).
The gyro (1) is connected to the 3-pole connection plug
(2) at the receiving output for the tail servo. For the gyro
sensitivity to be adjusted by remote control, the single-
pole control input (3) is connected to a free channel at
the receiver.
The tail servo (4) is connected to the gyro with the servo
connection cable (5). This means that the gyro is swit-
ched between the receiver and the tail servo.
For the gyro (1) to stabilise the tail of the helicopter, it
must be vibration-dampened, but firmly connected to
the chassis. Therefore, double-sided adhesive tape has
been used to attach the gyro on the mounting platform
(see figure 19, item 2).
When inserting the flight battery, always observe firm
bonding of the gyro to the helicopter chassis. If the con-
nection comes loose, the helicopter's flight behaviour
will become uncontrollable.
Figure 18
Figure 19
77