GRAUPNER Agusta A119 Koala Manual 

GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY Modifications, errors and printing errors reserved. ID# 53114 10/04 Agusta A119 Koala Scale fuselage kit for miniature electric helicopter Micro Star 400 Warning! 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 per ...

2 Foreword The AGUSTA A119 "Koala" is a single-turbine helicopter designed for a wide range of tasks. It is largely based on the familiar twin-engined A109, but is fitted with only one turbine and a robust skid landing gear instead of the fixed or retractable wheeled undercarriage. The capacious cabin provides space for up to seven passengers, 1 tonne of freight or - in the rescue helicopter version - two stretchers. The Pratt & Whitney P ...

3 Warning notes • • • • The contents of this kit can be assembled to produce a working model, but the model is by no means a harmless plaything. If assembled incorrectly or handled incompe- tently or carelessly it can cause serious injury to persons and damage to property. • • • • When the model helicopter’s motor is running, the two rotors are spinning at high speed and contain an enormous quantity of rotational energy. ...

4 • • • • Controlling a model helicopter successfully is not easy; you will need persistence and determination to learn the skills, and good hand-eye co-ordination is a basic require- ment. • • • • Before you attempt to fly the model you should study the subject of helicopters in depth, so that you have a basic understanding of how the machines work. Read every- thing you can on the theory of helicopters, and spend as much ...

5 Contents • Foreword ......................................... P.2 • Warnings ......................................... P.3 • Accessories, extra items required ....................... P.6 • Building the base plate and landing gear .................. P.7 • Grundplatte mit Landegestell anfertigen ................. P.7 • Completing the chassis .............................. P.10 • Preparing the fuselage shells ................ ...

6 Accessories Mechanics and recommended accessories for the AGUSTA A119 Koala Mechanics: MICRO STAR 400 Order No. 4441 Factory-assembled model including motor Order No. 4441.RCU As 4441, plus four servos, speed controller and gyro system Radio control system: see 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-14, mc-15, m ...

7 Assembly Preparing the chassis We assume that you have already test-flown your MICRO STAR 400 and set it up correctly. This is important, as access to the components for adjustment and maintenance is greatly restricted when the mechanics are inside the fuselage. • • • • Remove the canopy (no longer required). • Remove the flight battery. • Unscrew the stabiliser panels from the mounting flanges. • Locate the self-tapping s ...

8 Drill two 2 mm Ø holes in each of the carbon fibre skid tubes, taking care to drill at exactly the same angle: the rear ones should be 22 mm from the end, and the front ones spaced 135 mm from them. Caution: do not drill right through the tubes: just drill into them! Fit the two skid bars into the holes "dry" (no glue), and tape the skid tubes down on a flat surface as shown: the tubes should be 108 mm apart, perfectly "square" and pa ...

9 Measure a point 95 mm from the rear of the original aluminium skid tubes and cut them off at that point; the remaining curved front ends can now be pushed onto the wooden dowels in the carbon fibre skid tubes and glued in place. Align the curved ends so that they are parallel to each other, and check that they form a neat joint with the carbon fibre tubes. Allow the glue to cure fully. This completes the landing gear. Glue the assembly ...

10 Completing the chassis Attach the helicopter chassis (complete with tail boom and boom braces) to the base plate using the four screws with which the original skid landing gear was secured. Attach the speed controller to the underside of the base plate so that the ON / OFF switch is easily accessible when the model is complete. The upper bodywork stand-off pillars consist of a 70 mm length of 2 mm Ø carbon fibre rod. Drill a 2 mm Ø h ...

11 Preparing the fuselage shells Cut out the vacuum-moulded fuselage shells, working exactly along the marked lines, and sand the cut edges smooth using fine abrasive paper. Using a sharp balsa knife, carefully cut out the rectangular turbine air intakes in the upper part of the fuselage, aft of the main rotor shaft. Seal the openings by gluing small pieces of fly screen over them on the inside; they serve as additional air openings to co ...

12 When you are confident that everything lines up correctly and is held securely in place, the rear part of the shells can be glued together in the following areas only: • The top of tail boom along the shaft tunnel, then forward and up to just aft of the main rotor shaft; • The whole of the upper vertical stabiliser; • The whole tail cone; • The whole of the bottom vertical stabiliser. Do not allow the glue to run onto other are ...

13 Slide the tail rotor assembly onto the tail boom again, working from the rear underside, and re- place it in its original position. Trim the opening in the fuselage shell as required to ensure that none of the moving parts fouls the bodywork. Connect the tail rotor bellcrank to the pushrod, then replace the crank in its original position. Check that the tail rotor works correctly, with no tendency to foul or jam at any point. Mark the ...

14 Drill 2 mm Ø holes at the marked points in the tail boom so that the carbon fibre rod can be fitted through them; the rod acts as the horizontal stabiliser joiner and spar. Fit the stabiliser panels on the joiner rod, and check that they are horizontal when viewed from the tail. At the same time ensure that they rest snugly against the fuselage sides. When you are confident that everything fits correctly, remove the stabiliser panels, ...

15 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. • Avoid flying over agricultural workers in neighbouring fields. • Do not fly your model in the vicinity of railway lines, major roads or overhead cables. Pre-flight checks, flying safety ...

16 Some basic terms used in model helicopter flying The term "rotary wing machine" indicates that the helicopter’s lift is derived from rotating "wings" which take the form of rotor blades. As a result, a helicopter does not require a minimum for- ward speed in order to fly, i.e. it can hover. Cyclic pitch Cyclic pitch variation is used to steer the machine around the roll and pitch axes. Changing cy- clic pitch has the effect of alteri ...

17 this prevents the rotor plane tilting excessively in forward flight. In model helicopters a single hinge shared by both blades has proved an effective solution to the problem. Auto-rotation This term refers to a helicopter flying without motor power. The rotational speed of the main ro- tor can be kept high by setting both blades to negative pitch, and the airflow through the rotor as it descends then keeps the blades turning. The rota ...

18 List of parts Part No. Description Material / dimensions in mm No. off 1 Fuselage shell, right / left Clear plastic, smoked tint 1 each 2 Horizontal stabiliser, bottom shell, right / left Clear plastic, smoked tint 1 each 3 Horizontal stabiliser, top panel,(scrap material from parts 1) Clear plastic, smoked tint approx. 55 x 25 1 each 4 Battery hatch cover (scrap material from parts 1) Clear plastic, smoked tint approx. 55 x 40 1 5 Du ...