GRAUPNER Agusta A119 Koala User Manual
Order No. 4461
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 persons and damage to property.
You alone are responsible for completing the model correctly and operating it safely. The
kit also includes two further information sheets - SHW 3 and SHW 7 - which include
safety notes and warnings. Please be sure to read them and keep to our recommendations. They are an essential part of these instructions.
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Modifications, errors and printing errors reserved. ID# 53114 10/04
Agusta A119 Koala
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 PT6B-37A turbine generates a take-off
power of 1002 BHP and a continuous output of 872 BHP, giving the "Koala" an exceptional
performance.
This fuselage kit is designed to convert the MICRO STAR 400 mini electric helicopter into a
semi-scale model of the AGUSTA A119 "Koala" helicopter. The original MICRO STAR should
first be test-flown and trimmed out completely. The chassis of the model, complete with tail
boom and boom braces but without canopy and skid landing gear, is then screwed to a light-
wood plywood base plate, to which a semi-scale broad-based skid landing gear is also
attached. The fuselage, consisting of two lightweight vacuum-moulded shells, can then be fitted
round this assembly. The shells are only glued together permanently at the tail end; at the front
they are held together by strips of adhesive tape, so that the chassis can still be removed easily
from the fuselage for maintenance work.
The fuselage is vacuum-moulded from clear smoked-tint plastic, and is designed to be painted
from the outside; the kit includes pre-cut masks for the windows.
The flight battery can be changed through an opening in the bottom of the fuselage, without
having to remove the fuselage shells.
Naturally the flight time which can be achieved per battery charge varies according to the
model’s set-up and the pilot’s flying style; however, since the "Koala" is around 100 g heavier
than the basic MICRO STAR 400, you must expect the flight times to be correspondingly
shorter.
Note: in developing this fuselage kit we considered that minimum possible weight and minimum adverse effect
on the model’s flight performance were more important than ease of building. For this reason you will need a
reasonable level of modelling skill, care and patience in order to complete this model satisfactorily, particularly
regarding the trimming and joining of the thin-walled fuselage shells.
Specification
Length excl. rotor approx. 645 mm
Height approx. 205 mm
Width excl. rotor approx. 140 mm
Main rotor Ø 630 mm
Tail rotor Ø 140 mm
All-up weight min. approx. 595 g
Main rotor reduction ratio 13,2:1
Tail rotor reduction ratio 4:1
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Agusta A119 Koala
Warning notes
The contents of this kit can be assembled to produce a working model, but the model
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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
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speed and contain an enormous quantity of rotational energy. Anything and every-
thing that gets into the rotational plane of the rotors is either damaged or destroyed -
and that includes parts of your body. Please take extreme care at all times with this
machine.
If any object obstructs the rotational plane of the revolving rotors, severe damage will
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probably be caused to the rotor blades as well as the object. Broken parts may fly off
and result in enormous imbalance; the whole helicopter then falls into sympathetic
vibration, you lose control and have no way of predicting what the model will do next.
You may also lose control if a problem arises in the radio control system, perhaps as
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a result of outside interference, component failure or flat or faulty batteries, but in any
case the result is the same: the model helicopter’s response is entirely unpredictable.
Without prior warning it may move off in any direction.
Helicopters have many parts which are naturally subject to wear, including gearbox
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components, motor, ball-links etc., and as a result it is absolutely essential to check
and maintain the model regularly. It is standard practice with full-size aircraft to give
the machine a thorough "pre-flight check" before every flight, and this is equally im-
portant with your model helicopter. Constant checking gives you the opportunity to
detect and correct any faults which may develop before they are serious enough to
cause a crash.
The kit also includes two further information sheets - SHW 3 and SHW 7 - which in-
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clude safety notes and warnings. Please be sure to read them and keep to our rec-
ommendations. They are an essential part of these instructions.
This helicopter is designed to be constructed and operated by adults, although young
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people of 16 years or more may do so under the instruction and supervision of com-
petent adults.
The model features sharp points and edges which may cause injury.
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Flying model aircraft is subject to certain legal restrictions, and these must be ob-
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served at all times. For example, it is essential to take out third party insurance, you
must obtain permission to use the flying site, and you may have to obtain a licence to
use your radio control system (regulations vary from country to country).
It is important to transport your model helicopter (e.g. to the flying site) in such a way
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that there is no danger of damaging the machine. Particularly vulnerable areas are the
rotor head linkages and the tail rotor generally.
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Agusta A119 Koala
Controlling a model helicopter successfully is not easy; you will need persistence and
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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
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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 time as you can
watching other model helicopter pilots flying. Talk to chopper pilots, ask their advice,
and enrol at a specialist model flying school if you need to. Many model shops will
also be prepared to help you.
Please be sure to read right through these instructions before you start work on the
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model. It is important that you clearly understand each individual stage of assembly
and the correct sequence of events before you begin building.
Don’t make modifications to the model’s construction by using parts other than those
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specifically recommended, unless you are certain of the quality and suitability of
these other parts for the task.
We have made every effort to point out to you the dangers inherent in operating this
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model helicopter. Since neither we, the manufacturer, nor the model shop that sold
you the kit have any influence over the way you build and operate your model, we are
obliged to disclaim any liability in connection with it.
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. For this reason we are obliged to deny all liability for loss, damage or costs
which are incurred due to the incompetent or incorrect use and operation of our prod-
ucts, or which are connected with such operation in any way.
Unless otherwise prescribed by binding law, the obligation of the GRAUPNER company
to pay compensation, regardless of the legal argument employed, is limited to the in-
voice value of that quantity of GRAUPNER products which was immediately and directly
involved in the event which caused the damage. This does not apply if GRAUPNER is
found to be subject to unlimited liability according to binding legal regulation on account
of deliberate or gross negligence.
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Contents
Agusta A119 Koala
Foreword
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Warnings
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Accessories, extra items required
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Building the base plate and landing gear
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Grundplatte mit Landegestell anfertigen
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Completing the chassis
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Preparing the fuselage shells
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Final trimming of the fuselage shell
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Horizontal stabilisers
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Completing and painting the model
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Centre of Gravity
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General safety measures
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Basic helicopter terminology
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P.2
P.3
P.6
P.7
P.7
P.10
P.11
P.12
P.13
P.14
P.14
P.15
P.16
List of parts
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P.18
The instructions
We have invested considerable effort in producing these instructions, with the aim of ensuring
that your model helicopter will fly reliably and safely. Please take the trouble to follow the
instructions step by step, exactly as described, as this guarantees a successful outcome. This
applies to you whether you are a relative beginner or an experienced expert.
The comprehensive illustrations show how the model is constructed; be sure to read the
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instructions which accompany the drawings.
All gears, bearings and moving joints must be greased or oiled carefully.
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You will find the parts list at the end of these instructions.
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Agusta A119 Koala
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 microcomputer radio control system such as the mc-12, mc-14, mc-15, mc-19, mc / mx-22 or mc-24.
Servos:
C 121 micro-servo
Order No. 5106
Gyro system:
PIEZO NT-310 pico gyro system
Order No. 5134
Speed controller:
PICO SC 20
Order No. 7160
or
PICO 25
Order No. 7172
Flight battery:
LiPo 1500
Order No. 7635.3BEC
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