22
Page 18
Important!
If the main rotor is operated at a speed below 2300 rpm, 105 mm tail rotor blades may be used. For main rotor
head speeds above 2300 rpm, use 95 mm tail rotor blades.
Grease the bearing rollers of the flywheel at the main gear sufficiently with a screwdriver or similar.
Page 19
For best settings of tooth backlash between the main gear cogwheel and tail rotor bevel gear, the mechanical unit includes
not only the washer W12.1x17x1.2 but also a washer with 0.2 and a washer with 0.3 mm thickness. Use either the 0.2 mm
or the 0.3 mm washer to adjust tooth backlash between the main cogwheel and tail rotor shaft bevel gear to 0.1 mm. The
main rotor shaft must be inserted so that the side with the two bores offset by 90° points up (also see page 26).
When the rotor shaft screw M4x23 is inserted, lift the mechanical unit at the rotor shaft, push the rotor shaft adjustment
ring down and tighten the two screws of the adjustment ring.
Page 20
The eye-bolts of the tail boom support must be attached with epoxy glue. Comply with the specifications in the drawing
precisely when creating the tail rotor linkage and glue the sliding sleeves to the linkage rod with superglue.
Page 21
When installing the tail boom support, observe the different screw shapes and screw lengths.
Page 22
After inserting the tail rotor linkage, align the guide clamps so that there is the same distance to the sliding sleeve on the
right and left when the tail servo lever is in the centre position.
Tighten the six screws M3x8 of the motor shaft bearing block only when you have set the tooth backlash of 0.1 mm after
motor installation (see page 23).
Page 23
Maintain the distance of 28.9 mm between motor pinion and motor carrier plate precisely and only slightly tighten the M4x8
screws. It must still be possible to move the motor on the motor carrier plate.
Insert the motor in the mechanical unit and move it on the carrier plate until the tooth backlash between motor pinion and
main gear cogwheel is 0.1 mm. Take the motor from the mechanical unit and tighten the attachment screws M4x8. After
inserting the motor again, check the tooth backlash and then tighten the M3x8 screws of the motor shaft bearing block (see
page 22) as well.
Page 24
The page shows the schematic setup of the pre-installed main rotor head. Check that the screws are tightened and secured
in this component.
Page 25 - 26
The two pages show the schematic assembly of the swash plate, which may be disassembled for maintenance purposes on
demand using a special wrench (GAUI-number: 666167). Only tighten the screw M3x10 until the swash plate will still turn
easily.
Put the swash plate and the rotor head on the main rotor shaft and screw the rotor head on with the two screws M4x23.
