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Lower figure:
Push the tailboom carefully back into the mechanics. Observe that the two pinions for the tail rotor drive interlock cleanly.
Observe that the pinions are not too close but have a distance of 0.1 mm (see small drawing).
When the tailboom fits perfectly and the rudder unit is aligned vertically, tighten the two chassis screws M3x18 (see page
7 top figure) and the screws at the tow tailboom supports. Connect the tail rotor rods to the tail rotor servo (also see page
16, lower figure).
Page 13
Upper figure:
Install the three linkage rods for the swash plate. The distance from hole centre to hole centre must be 43.5 mm. Once the
servo lever is installed, connect the linkage rods to the swash plate and attach the servo levers.
Important note!
Since high-performance electrical drives can be very dangerous, we recommend disconnecting the motor from the
controller for any maintenance and setting work. This reliably prevents inadvertent start-up of the mechanics.
Call a helicopter programme with a 3-point 120° swash plate linkage (HR-3) on your remote control transmitter. Set the
correct running direction and the precise centre position of the servos. The three servo levers of the swash plate sensors
must be aligned precisely in a horizontal line with each other (see small sketch) when the pitch control lever is in the centre
position.
Lower figure:
Assembly of the swash plate guide and the rotor blades complete the mechanics setup. When installing the swash plate
guide, ensure that the side with the lower height of the guide slot is installed pointing to the front in flight direction.
The rotor blade screws must only be tightened enough for the rotor blades to align at a 180° angle to each other in flight.
Page 14
Verification of the control directions:
Upper figure:
The figure shows the height control of the model helicopter, with the respective lever motions in remove control systems for
mode I and mode II displayed.
If the angle of attack of the rotor blades is to be increased for lifting, the swash plate must be pushed upwards on the main
rotor shaft by the servos. Observe that the swash plate always remains horizontal and never tilts to the side during its
vertical movements.
Centre figure:
The figure shows the directional control of the model helicopter. The swash plate always has to tilt in the direction into which
the steering command is given. Observe that the swash plate has the same inclination angles to the right and left. The
inclination angles to the front and rear also need to match.
Lower figure:
The figure shows the tail control of the model helicopter. If the remote control steers to the right, the sliding sleeve of the
tail rotor linkage must be pushed towards the gear casing on the tail rotor shaft. If this is not the case, change the running
direction of the tail servo at the transmitter.
Also check the effective direction of the gyro in this context. If the fuselage tip of the helicopter is turned to counter-
clockwise to the left when viewed from above, the sliding sleeve must also be moved towards the gear casing by the gyro.
If this is not the case, change the running direction of the tail servo at the gyro. Then adjust the maximum deflection of the
tail servo at the gyro.