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GRAUPNER Micro Star 400 Manual

Miniature electric helicopter for indoor and outdoor flying
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Micro Star
Miniature electric helicopter
for indoor and outdoor flying
Order No. 4495
Order No. 4496
The contents of this kit can be assembled to produce a working helicopter, but the model
is by no means a harmless plaything. If assembled incorrectly or handled incompetently
or carelessly it can cause serious injury to persons and damage to property.
You alone are responsible for completing the model correctly and operating it safely.
Please be sure to read the information sheets - SHW 3 and SHW 7 - included in the kit.
They are an essential part of these instructions.
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Modifications, errors and printing errors reserved.
400 v2
Factory-assembled model incl. motor,
(belt-driven tail rotor)
Factory-assembled model incl. motor,
(shaft-driven tail rotor)
Warning!
Order No. 4495
ID# 56503
4496
12/05

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Summary of Contents for GRAUPNER Micro Star 400

  • Page 1 Please be sure to read the information sheets - SHW 3 and SHW 7 - included in the kit. They are an essential part of these instructions. GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY Modifications, errors and printing errors reserved.

  • Page 2: Order No

    Bell / Hiller main rotor mixer linkage, i.e. we have not adopted any compromises which would have an adverse effect on flight control. The result is that the MICRO STAR 400 v2 can be flown without problem even in quite strong winds, in spite of its diminutive size.

  • Page 3: Warnings

    Micro Star 400 v2 Warning notes • • • • The contents of this kit can be assembled to produce a working helicopter, but the model is by no means a harmless plaything. If assembled incorrectly or handled in- competently or carelessly it can cause serious injury to persons and damage to prop- erty.
  • Page 4 Liability exclusion / Compensation As manufacturers, we at GRAUPNER are not in a position to influence the way you build and set up the model, nor how you install, operate and maintain the radio control system components.
  • Page 5 Micro Star 400 v2 Contents • Foreword ......... • Warnings ......... • Accessories, extra items required ....... • 1. Assembling the model, installing the RC system ... • 2. Setting up ........P.11 • 3. Final checks before the first flight ......
  • Page 6 Micro Star 400 v2 Accessories Recommended items for the Micro Star 400 v2 Radio control system: see the main Graupner catalogue We recommend a radio control system equipped with special helicopter options, or a micro- computer radio control system such as the mc-12, mc-15, mc-19, mc / mx-22 or mc-24.

  • Page 7: Assembling The Model

    Micro Star 400 v2 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, including high mass constancy combined with low weight, freedom from fatigue effects, low-noise operation, and the ability to absorb vibration in the power train.
  • Page 8 Micro Star 400 v2 Connect the pushrods to the output arms of the swashplate, collective pitch and tail rotor servos. Important: The servos must be set to centre (neutral) before fitting the output arms. This is done by connecting the receiving system components including a receiver battery, then switching on the transmitter and receiver.
  • Page 9 Micro Star 400 v2 Adjust the position of the tail rotor servo until the tail rotor control lever is exactly at right-angles to the tail boom when the servo is at neutral.
  • Page 10 Micro Star 400 v2 Connect the speed controller to the motor as described in the instructions supplied with it. Keep the cables as short as possible, and ensure that there is no short-circuit between the pins of the suppressor capacitors (soldered to the motor terminals) and the motor case.

  • Page 11: Setting Up

    Micro Star 400 v2 2. Setting up 2.1 Setting up the cyclic control system The basic settings for the roll-axis and pitch-axis control systems should already be correct if you have installed the linkages exactly as described in the instructions. Since the lever lengths are pre-defined, the final setting up is carried out using the electronic facilities provided by your transmitter.
  • Page 12 Micro Star 400 v2 2.3 Setting up the motor control system The following diagrams show two alternative motor control curves: • The "normal" power curve is suitable for hovering and circuits. • The "aerobatic" power curve is set up in such a way that the motor does not stop at any position of the collective pitch stick.

  • Page 13: Final Checks Before The First Flight

    The gyro systems recommended for the Micro Star 400 v2 either feature a gain adjustor, which should initially be set to 50% gain, or alternatively the gyro gain can be adjusted from the transmitter using a supplementary channel (see gyro system instructions).

  • Page 14: Adjustments During The First Flight, Blade Tracking

    Micro Star 400 v2 4. Adjustments during the first flight Blade tracking The term "blade tracking" refers to the height of the two rotor blades when they are spinning. The adjustment procedure aims at fine-tuning the pitch of the main rotor blades to exactly the same value, so that the blades rotate at the same level.
  • Page 15 Micro Star 400 v2 5. Maintenance Helicopters, whether large or small, place considerable demands on maintenance. Whenever you notice vibration in your model, take immediate steps to reduce or eliminate it. Rotating parts, important screwed joints, control linkages and linkage junctions should be checked before every flight.
  • Page 16 Micro Star 400 v2 Install the pitch-axis rocker, the roll lever and the collective pitch lever, and secure them as shown; check that everything works smoothly and freely; if not, loosen the screws "M" by half a turn. Belt-drive version only: Press the two bearings into the toothed belt drive bracket 4441.329, then fit the front belt pulley...
  • Page 17 Micro Star 400 v2 Assemble the main rotor head and rocker (4441.65), together with the remaining parts such as the blade holders 4441.61, the feathering spindle 4441.66, the driver 4441.368, the washout unit 4441.332 and the main rotor shaft 4441.22, as shown in the illustration. Check all levers and links for freedom of movement.
  • Page 18 Micro Star 400 v2 Slide one of the two collets on the main rotor shaft, and fit the whole assembly through the ball- races in the chassis from above, and through the main gear. Fit the second collet on the bottom end, position it flush with the bottom end of the main rotor shaft, and tighten the retaining screw.
  • Page 19 Micro Star 400 v2 Press the ballraces 4441.46 into the shells of the tail rotor housing 4441.347, fit the tail rotor shaft 4441.344 and engage the toothed belt 4441.317, then screw the two housing shells together. Install the bellcrank 4441.343 and the control bridge 4441.42.
  • Page 20 Micro Star 400 v2 Fit the two clamps 4441.311 and the servo mounts 4441.308 on the tail boom 4441.310, then screw the vertical and horizontal stabilizers 4441.04 to the clamps. Draw the toothed belt through the boom (taking care not to twist it), and push the tail rotor onto the end of the boom.
  • Page 21 Micro Star 400 v2 Install the two tail boom braces 4441.307 as shown in the picture. Fit the aerial guide sleeve through the holes in the skid bars. The rotor blades and canopy are fitted after the receiving system components have been in- stalled;...
  • Page 22 Micro Star 400 v2 Only the bottom section of the tail boom support is used to fix the tail boom to the chassis in this version; it is fitted on top of the boom, while the bottom of the boom rests directly on the chas- sis;...

  • Page 23: General Safety Measures

    Micro Star 400 v2 6. General safety measures • Take out adequate third-party insurance cover. • Wherever possible join the local model flying club. At the flying site: • Never fly your model above spectators. • Do not fly models close to buildings or vehicles.
  • Page 24 Micro Star 400 v2 Ground effect This occurs only when the machine is close to the ground, and it falls off as altitude rises. At an altitude of about 1 - 1½ times the rotor diameter ground effect is completely absent. Normally the revolving airflow from the main rotor is able to flow away freely, but in ground effect the air strikes an obstacle (the ground) and forms an "air cushion".

  • Page 25: Replacement Parts

    Order No. 4495 4496 Micro Star 400 v2 Summary of replacement parts Date of issue 12/2005 GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY Modifications, errors and printing errors reserved. ID# 56503 12/05...
  • Page 26 Micro Star 400 v2 Replacement parts Graupner Description Dimensions No. off Order No. [mm] Reqd./Pack 4441.01 Main rotor blade, plastic 4441.02 Tail rotor blade, plastic 4441.303 Cabin and glazing 4441.04 Horizontal / vertical stabilizers 1 each 4441.305 Skid bar 4441.306 Skid tube, black aluminium 4441.307...
  • Page 27 Micro Star 400 v2 Optional upgrade components Graupner Description Dimensions No. off Order No. [mm] Reqd./Pack 4441.101 Main rotor blade, CFRP 4441.201 Main rotor blade, GRP 4441.102 Tail rotor blade, CFRP 4441.105 Trainer landing gear 4441.410 Tail boom (10 mm), CFRP 4441.420...
  • Page 28 Micro Star 400 v2 Notes...

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