Assembling The Model - GRAUPNER 400 Bedienungsanleitung

Micro Star 400

1. Assembling the model

The main mechanical system of the Micro Star 400 consists primarily of glass fibre reinforced
nylon, a material which offers important advantages for use in model helicopters over alterna-
tives such as aluminium, such as high mass constancy combined with light weight, freedom
from fatigue effects, low-noise operation, and the ability to absorb vibration in the power train.
Since the model is supplied completely factory-assembled, completing it ready to fly simply in-
volves installing the radio control system components and the flight battery.
However, please note that you should check that all parts have been assembled correctly by
comparing them with the instructions; the final adjustment of the gearbox and linkages must
also be carried out by the modeller himself.
Important:
before you carry out any other work it is essential to check that the power system operates
smoothly and freely.
Loosen the screws which clamp the tail rotor housing to the tail boom and adjust the position of
the tail rotor unit until there is about 0.5 mm clearance between the end face of the brass pinion
and the hub of the plastic gear on the tail rotor shaft. Re-tighten the clamping screws and en-
sure that the tail rotor shaft is exactly horizontal.
Now loosen the clamping screws which fix the front of the tail boom to the chassis. Adjust the
position of the tail boom until there is just perceptible meshing clearance between the crown
gear of the tail rotor drive gear and the motor pinion, then re-tighten the clamping screws. Fi-
nally loosen the motor retaining screws and tighten them again, so that the motor takes up the
optimum position between the main gear and the tail rotor drive system.
1.1 Installing the radio control system components
The arrangement of the radio control system components is shown in the illustration: The ser-
vos are fixed to the chassis as shown in the drawing using the screws supplied with them.
Note:
The tail rotor servo is very close to the main gear, but must not foul it. If necessary sand back
the servo case and or the main gear slightly to provide clearance.
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