Reely Red Hawk User guide
Wichtige Informationen Version 05/10
Important Information Version 05/10
EP Helikopter „Red Hawk“ RTF 2,4 GHz
Best.-Nr: 20 78 00
Sehr geehrte Kundin, sehr geehrter Kunde,
im Zuge der Produktpflege wurde für die Ansteuerung des Heckrotors ein neues,
höherwertiges Servo eingebaut.
Bitte beachten Sie, dass dieses neue Servo abweichend von den Katalogangaben kein digitales, sondern ein analoges Servo ist.
Aus diesem Grund dürfen Sie den Gyro nur in der Betriebsart "analog"
betreiben.
Wird der Gyro auf "digital" eingestellt, so wird das Servo zerstört!
Wir bitten um Beachtung!
Ihr REELY-Team
Diese Bedienungsanleitung ist eine Publikation der Conrad Electronic SE, Klaus-Conrad-Str. 1,
D-92240 Hirschau (www.conrad.com).
Alle Rechte einschließlich Übersetzung vorbehalten. Reproduktionen jeder Art, z. B. Fotokopie,
Mikroverfilmung, oder die Erfassung in elektronischen Datenverarbeitungsanlagen, bedürfen der
schriftlichen Genehmigung des Herausgebers. Nachdruck, auch auszugsweise, verboten.
Diese Bedienungsanleitung entspricht dem technischen Stand bei Drucklegung. Änderung in Technik
und Ausstattung vorbehalten.
© Copyright 2010 by Conrad Electronic SE. 01_0510_01
EP Helicopter "Red Hawk" RTF 2.4 GHz
Item no.: 20 78 00
Dear Customer,
In the scope of product maintenance, a new servo of higher quality was built in for
controlling the tail rotor.
Please observe that this new servo is not a digital servo as indicated in the
catalogue, but an analogue one.
For this reason, you must only operate the gyro in the "analogue" operating
mode.
If the gyro is set to "digital", the servo will be destroyed!
Please observe!
Your REELY Team
These operating instructions are a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1,
D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microfilming,
or the capture in electronic data processing systems require the prior written approval by the editor.
Reprinting, also in part, is prohibited.
These operating instructions represent the technical status at the time of printing. Changes in
technology and equipment reserved.
© Copyright 2010 by Conrad Electronic SE.
Informations importantes Version 05/10
Hélicoptère EP « Red Hawk » 2,4 GHz RTF
N° de commande : 20 78 00
Chère cliente, cher client,
Dans le cadre de l'entretien de votre produit, un nouveau servo haut de gamme a été
intégré pour la commande du rotor de queue.
Attention : ce nouveau servo diffère des données du catalogue. Il ne s'agit
pas d'un servo numérique, mais d'un servo analogique.
Pour cette raison, vous devez utiliser le gyroscope exclusivement en mode
« analogique ».
Si le gyroscope est réglé sur « numérique », le servo sera détruit !
Nous vous prions de respecter cette consigne !
L'équipe REELY
Ce mode d'emploi est une publication de la société Conrad Electronic SE, Klaus-Conrad-Str. 1,
D-92240 Hirschau (www.conrad.com).
Tous droits réservés, y compris de traduction. Toute reproduction, quelle qu'elle soit (p. ex. photocopie,
microfilm, saisie dans des installations de traitement de données) nécessite une autorisation écrite de
l'éditeur. Il est interdit de le réimprimer, même par extraits.
Ce mode d'emploi correspond au niveau technique du moment de la mise sous presse. Sous réserve
de modifications techniques et de l'équipement.
© Copyright 2010 by Conrad Electronic SE.
Belangrijke informatie Versie 05/10
EP helikopter „Red Hawk“ RTF 2,4 GHz
Bestelnr. 20 78 00
Geachte klant,
Als gevolg van productonderhoud werd voor de aansturing van de staartrotor een
nieuwe, hoogwaardige servo ingebouwd.
Let erop dat deze nieuwe servo, anders dan de catalogusgegevens, geen
digitale, maar een analoge servo is.
Omwille van deze reden mag u de gyro enkel in de bedrijfsstand "analoog"
gebruiken.
Als de gyro op "digitaal" wordt ingesteld, dan wordt de servo vernietigd!
Gelieve dit in acht te nemen.
Het REELY-team.
Deze gebruiksaanwijzing is een publicatie van de firma Conrad Electronic SE, Klaus-Conrad-Str. 1,
D-92240 Hirschau (www.conrad.com).
Alle rechten, vertaling inbegrepen, voorbehouden. Reproducties van welke aard dan ook, bijvoorbeeld
fotokopie, microverfilming of de registratie in elektronische gegevensverwerkingsapparatuur, vereisen de schriftelijke toestemming van de uitgever. Nadruk, ook van uittreksels, verboden.
Deze gebruiksaanwijzing voldoet aan de technische stand bij het in druk bezorgen. Wijziging van
techniek en uitrusting voorbehouden.
© Copyright 2010 by Conrad Electronic SE.
EP Helicopter „Red Hawk“ RtF 2.4GHz
Item No.: 20 78 00
Operating Instructions
Version 08/09
1. Introduction .......................................................................................................................................................... 3
2. Intended use ........................................................................................................................................................ 4
3. Product description .............................................................................................................................................. 4
4. Delivery content ................................................................................................................................................... 5
5. Explanation of symbols ....................................................................................................................................... 5
6. Safety instructions ............................................................................................................................................... 6
7. Information on batteries and rechargeable batteries .......................................................................................... 8
8. Commissioning of the transmitter ...................................................................................................................... 10
9. Commissioning of the model helicopter ............................................................................................................ 10
10. Fine Tuning of the model helicopter .................................................................................................................. 24
11. Aerobatics with a model helicopter ................................................................................................................... 32
12. Care and maintenance ...................................................................................................................................... 33
13. Disposal .............................................................................................................................................................34
14. Troubleshooting ................................................................................................................................................. 35
15. Technical data.................................................................................................................................................... 36
16. Declaration of Conformity (DOC) ...................................................................................................................... 36
Table of contents
The table of contents and operating instructions for the remote control unit can be found at page 37.
a) General information....................................................................................................................................... 6
b) Before operation ............................................................................................................................................ 7
c) During operation ............................................................................................................................................ 7
a) Charging the helicopter battery ................................................................................................................... 10
b) Checking the pre-installed mechanisms ..................................................................................................... 11
c) Inserting the helicopter battery .................................................................................................................... 12
d) Checking the main rotor settings ................................................................................................................ 12
e) Checking the tail rotor ................................................................................................................................. 16
f) Balancing the helicopter .............................................................................................................................. 18
g) Basic information relevant to the control of model helicopters ................................................................... 19
h) Practical flight tips for the first start ............................................................................................................. 21
i) Trimming the helicopter ............................................................................................................................... 21
j) Modifying the steering directions ................................................................................................................ 23
k) Practical tips for the first hover flights ......................................................................................................... 23
a) Setting the alignment .................................................................................................................................. 24
b) Balancing the rotor blades .......................................................................................................................... 25
c) Setting the pitch values ............................................................................................................................... 26
d) Setting the piezo gyroscope........................................................................................................................ 29
a) General information..................................................................................................................................... 34
b) Batteries and rechargeable batteries .......................................................................................................... 34
Page
2
1. Introduction
Dear Customer,
Thank you for purchasing this product.
This product complies with all current national and European requirements.
In order to maintain this status, we kindly request you to observe the operating instructions and ensure safe operation!
These operating instructions are part of this product. They contain important information regarding
installation and operation. Please bear this in mind in case you pass it on the product to a third
party.
Therefore, keep these operating instructions for future reference!
We kindly request the user to follow the operating instructions, to preserve this condition and to ensure safe operation!
All company names and product names are trademarks of the respective owner. All rights reserved.
A spare parts list is available on our website at www.conrad.com in the download section of the respective
product. You can also order the spare parts list by phone.
In case of any technical inquiries, contact or consult:
Tel. no.: +49 9604 / 40 88 80
Fax. no.: +49 9604 / 40 88 48
E-mail: tkb@conrad.de
Mon. to Thur. 8.00am to 4.30pm, Fri. 8.00am to 2.00pm
3
2. Intended use
This product is an electrically driven model helicopter which is radio controlled via the remote control unit included in
the delivery. The model is designed for use in large indoor rooms or sports arenas and can also be used outdoors in
light winds. The model helicopter is pre-assembled and ready to fly and is delivered with built-in remote control and
drive components.
Observe all safety notes in these operating instructions. They contain important information regarding the
handling of the product.
The product may not become damp or wet.
The product is not a toy and should be kept out of reach of children under 14 years of age.
You are solely responsible for the safe operation of the model!
3. Product description
The ready-to-fly "Red Hawk" RC electric helicopter has a rotor head with symmetrical rotor blades controlled by two
servos via a 3-point 90° swash plate. The collective adjustment of the main rotor blade angle (angle of attack) is
carried out using a third servo, which lifts the pitch compensator via a rod in the main rotor shaft.
When combined with speed regulation, this makes it possible to let the model helicopter ascend or descend. Deliberately
inclining and rolling the swash plate causes a constantly repeating direction-dependent (cyclic) adjustment of the
blades which allows flying in a particular direction possible.
Due to the mechanical construction of the rotor head control, the remote control does not have to have a special
helicopter menu with a swash plate servo mix function.
Torque balancing around the vertical axis (main rotor shaft) is carried out by a tail rotor which is powered via a toothed
belt running from the main pinion. The stabilisation of the tail is carried out by a high quality AVCS gyro.
The radio remote control unit included in the delivery allows optimal adjustment and sensitive steering of the model.
8 Mignon batteries (e.g. Conrad Item-No. 652507, 4-pack, please order 2 packs) or rechargeable Mignon batteries are
required to operate the transmitter.
4
4. Delivery content
• Electric helicopter ready to fly
• Remote control transmitter
• LiPo flight battery with charger
• Allen key
• Adjustment screwdriver
• Operating instructions
5. Explanation of symbols
The symbol with the lightning bolt in the triangle indicates a risk of injury, e.g. through an electric shock.
The symbol with the exclamation mark points out particular dangers associated with handling, function or
operation.
The "arrow" symbol indicates special tips and operating information.
5
6. Safety instructions
In case of damage caused by not complying with these safety instructions the guarantee will
become void. We will not assume any responsibility for consequential damage!
Nor do we assume liability for damage to property or personal injury caused by improper use or
the failure to observe the safety instructions! In such cases the warranty/guarantee is voided.
Normal wear and tear during operation (e.g. worn-out cogs/pinions or servo drives) are excluded from the
guarantee and warrantee, the same is the case for accidental damage (e.g. broken bearing retainer or
rotor blades).
Dear customer, the following safety instructions are intended not only for the protection of the product, but
also for your own safety and the safety of others. Therefore read this chapter very carefully before putting
the product into operation!
a) General information
Caution, important note!
Operating the model may cause damage to property and/or individuals. Therefore, make sure that you are
properly insured when using the model, e.g. by taking out private liability insurance. If you already have
private liability insurance, enquire whether the operation of the model is covered before operating it.
Please note: In some countries you are required to have insurance for all model aircraft!
• The unauthorized conversion and/or modification of the product is prohibited for safety and approval reasons (CE).
• The product is not a toy and should be kept out of reach of children under 14 years of age.
• The product must not get damp or wet.
• If you do not have sufficient knowledge yet as how to deal with remote-controlled models, please seek the advice of
an experienced model sportsman or a model construction club.
• Do not leave packaging material unattended. It may become a dangerous toy for children.
• Should any questions arise that are not answered with the help of these operating instructions, contact our Technical
Advisory Service (for contact information see chapter 1) or another expert.
The operation and use of remote control model helicopters has to be trained! If you have never steered such a
model, start especially carefully and get used to the reactions of the model to the remote control commands first. Do
be patient!
6
b) Before operation
• Check the function safety of your model and of the remote control system. Take care to check for obvious damage
such as broken plug-in connections or damaged cables. All movable parts on the model have to be running smoothly;
however, there must be no tolerance in the bearings.
• Charge the helicopter battery, which is necessary for operation, as well as the rechargeable battery needed in the
remote control according the instructions indicated by the manufacturer.
• Prior to operating the model, observe the position of the switch for flight mode. This MUST be in the "NORMAL"
position. Also observe the detailed information in the remote control operating instructions.
• If batteries are used for the power supply to the transmitter, make sure that they have sufficient remaining capacity
(battery tester). If the batteries are empty, always replace the complete set, never individual cells only.
• Before each operation, control the settings of the trim sliders on the transmitter for different steering directions and,
if necessary, adjust them.
• Always switch the transmitter on first. Then you may connect the helicopter´s flight battery to the flight controller. This
is the only way the receiver can attune to the transmitter (binding function). Otherwise, the electric helicopter may
react in an unpredictable manner!
c) During operation
• Do not take any risks when operating the product! Your own safety and that of your surroundings depends on your
responsible handling of the model.
• Improper operation may cause serious damage to people and property! Therefore, during operation, ensure a sufficient
safety distance to persons, animals and objects.
• Fly your model only if your ability to respond is unrestricted. The influence of tiredness, alcohol or medication may
cause incorrect responses.
• The motor, flight controller and helicopter battery can heat up during operation. Therefore, take a break before recharging the helicopter battery or before flying with any spare helicopter battery you may have. The drive motor and
the flight controller in particular must be cooled down to room or ambient temperature.
• Always leave the remote control (transmitter) turned on, as long as the model is in operation. After landing, always
disconnect the flight battery from the flight controller first. It is only after this that the remote control may be turned off.
• Do not expose your model or the remote control for a longer period of time to direct sunlight or excessive heat.
7
6. Notes on batteries and rechargeable batteries
Despite the fact that handling batteries and rechargeable batteries in daily life nowadays is a matter of fact,
there are still numerous dangers and problems involved. In particular with LiPo/LiIon rechargeable batteries
with their high energy content (in comparison with conventional NiCd or NiMH rechargeable batteries)
various regulations must be imperatively observed as otherwise there is danger of explosion and fire.
Therefore, ensure that you observe the following information and safety measures when handling batteries
and rechargeable batteries.
• Batteries/rechargeable batteries must be kept out of the reach of children.
• Do not leave batteries/rechargeable batteries lying around in the open; there is a risk of their being swallowed by
children or pets. In such a case, consult a doctor immediately!
• Batteries/rechargeable batteries must never be short-circuited, taken apart or thrown into fire. There is a risk of
explosion!
• Leaking or damaged batteries/rechargeable batteries may cause acid burns when they come into contact with skin,
therefore use suitable protective gloves.
• Do not recharge normal batteries. There is a risk of fire and explosion! Only recharge suitable, rechargeable batteries
and use a suitable charging device. Batteries (1.5V) are meant to be used once only and must be disposed of when
empty.
• When inserting batteries/rechargeable batteries or when connecting a battery pack or a charger, observe the correct
polarity (note plus/+ and minus/-). Wrong polarity may damage the transmitter, the flight model and the rechargeable
batteries. There is also a risk of fire and explosion.
• Always exchange the entire set of batteries or rechargeable batteries. Do not mix full batteries/rechargeable batteries
with half-full ones. Always use batteries or rechargeable batteries of the same type and manufacturer.
• Never mix batteries and rechargeable batteries! Either use batteries or rechargeable batteries for the remote control
transmitter.
• If the device is not used for a longer period of time (e.g. storage), remove the inserted batteries (or rechargeable
batteries) from the remote control to avoid damage from leaking batteries/rechargeable batteries.
Caution!
After the flight, the LiPo helicopter battery must be disconnected from the helicopter. Do not leave the
helicopter battery connected to the helicopter if the latter is not used (e.g. during transport or storage).
Otherwise, the helicopter battery may deep-discharge and become destroyed/unusable!
• Recharge NiCd or NiMH rechargeable batteries about every 3 months, as otherwise there may be a deep discharge
due to self-discharge, which renders the rechargeable batteries useless.
• The enclosed charger may only be used for 2 or 3-cell LiPo rechargeable batteries with a suitable connection cable.
Never try to use it for charging different rechargeable batteries (NiCd or NiMH)! There is a risk of fire and explosion!
Caution!
The enclosed power pack unit is not suited for charging rechargeable batteries in the remote control
transmitter! Only use it for the charger supplied! If you connect it to the remote control unit you will destroy
them both, loss of guarantee/warranty!
• Never charge the enclosed helicopter battery immediately after use. Always leave the helicopter battery to cool
down until it has reached room or ambient temperature again.
8
• Charge intact and undamaged batteries only. If the external insulation of the rechargeable battery is damaged or if
the rechargeable battery is warped or bloated, it must not be charged under any circumstances!
Never damage the helicopter battery covering, do not tear the foil cover, do not cut/probe the rechargeable battery
with sharp objects.
There is a risk of fire and explosion!
• Remove the helicopter battery that is to be charged from the model and place it on a fire-proof support. Maintain a
safe distance from flammable objects.
• As the charger as well as the helicopter battery heat up during the charging procedure, it is necessary to ensure
sufficient ventilation. Never cover the charger or the helicopter battery! Of course, this also applies for all other
chargers and rechargeable batteries.
• Never charge rechargeable batteries unsupervised.
• Disconnect the helicopter battery from the charger when it is fully charged.
• The charger and the helicopter battery may not become damp or wet. The operation of the charger is only permitted
in dry indoor rooms.
There is a risk of fatal injury through electric shock; furthermore, there is danger of fire and explosion
through the rechargeable battery!
Do not expose the charger or helicopter battery to high/low temperatures or to direct solar radiation.
The remote control (transmitter) can be operated with rechargeable batteries instead of batteries.
However, the lower voltage (batteries=1.5 V, rechargeable batteries=1.2 V) and the lower capacity of
rechargeable batteries do lead to a decrease of the operating time. Normally this does not matter, since
the operating time of the transmitter is far beyond that of the helicopter.
If you use disposable batteries in the remote control, we recommend the use of high-quality alkaline
batteries.
When using rechargeable batteries there can be a decrease in range.
9
8. Commissioning of the transmitter
Before you put the model helicopter into operation you should become familiar with the remote control's
many features.
An exact description of the remote control transmitter and all its programming options is available to you in
the second part of these operating instructions as from page 37.
9. Commissioning of the model helicopter
To carry out service or adjustment work or to change the model battery, you need to take off the cabin
hood. To do this, lift the hood off the two support bolts on the left and the right (see fig. 3, pos. 3) and pull
off the hood forwards.
a) Charging the flight battery
A special LiPo charger is enclosed with the helicopter for
recharging the helicopter battery.
When charging, always remove the battery from the model
in order to prevent shape distortion of the plastic parts if
the components heat up.
Connect the enclosed power-pack unit (2) to the power
supply socket (1). The 3-cell helicopter battery (3) is
connected to the right charger socket (4). The two small
handles of the pin and socket connector (protected against
wrong polarity) must point upwards to ensure proper
connection.
You do not need the 2-pole cable with the high-current
plug (5) for the charge process. Later on, you connect the
helicopter battery to the model helicopter with this cable.
As soon as the power supply unit is plugged into a 230 V
mains outlet, the red control LED blinks or flashes (6).
Once the helicopter battery is fully charged, the charge
control LED colour changes to green and stays lit.
Once the helicopter battery is separated from the charger,
the charge control LED colour changes to red and stays
lit. Then unplug the plug-in power pack out from the mains
socket.
10
Figure 1
For photo-technical reasons, the charging cable of the plug-in power unit is illustrated in wound-up state.
Before the first use, the cable retainer should be opened and the cable unwound.
On the left charge socket (7), you can also connect a 2-cell LiPo rechargeable battery (e.g. a rechargeable drive
battery of another model) and charge it.
Caution!
Always connect one rechargeable battery only to the charging adapter. The simultaneous charging of two
rechargeable batteries is not admissible and may damage the charger.
During the charging procedure, place the LiPo battery on a fire-proof support or in an appropriate pottery
container.
Never charge the rechargeable battery unattended.
The plug-in power pack is to be used in dry indoor locations only. It may never not get damp or wet. Never
touch it when your hands are wet or damp. There is a risk of a fatal electric shock.
b) Checking the pre-installed mechanics
Before you operate the model for the first time, you need
to check all screw fittings on the model.
The attachment screws of the main and rear rotor blades
may only be tightened to such an extent that the rotor
blades can automatically align themselves in flight at an
exact 180° angle.
All moving parts have to be easily movable/rotatable but
there should not be clearance in the bearing.
Apply some oil on the moving the parts around the pitch
compensator (1), the swash plate (2) and on the tail rotor
shaft around the sliding sleeve (3).
Figure 2
11
c) Installation of the flight battery
The charged flight battery (1) is slid into the battery
compartment as shown in the illustration. At a later point
in time you can move the helicopter battery to set the exact
centre of gravity (see also "Balancing the helicopter").
Practical tip:
To ensure the rechargeable battery sits firmly in the
compartment and can still be changed quickly, it has
proven useful to use Velcro to attach it. To do so, glue the
fluffy part to the rechargeable battery and the other half
with the hooked side on the battery surface.
In addition the rechargeable battery is also secured with
a Velcro strap (2).
This ensures that the rechargeable battery does not slip
or fall out during flight.
Important!
In order to prevent the uncontrolled starting of the electric engine during maintenance and adjustment
work, simply disconnect two of the three plug connections (see fig, pos. 1) to the engine.
d) Checking the main rotor settings
Before you can make your first test flight with the helicopter
you will need to check or adjust the settings of the rotor
head.
Put the transmitter into operation and connect the
helicopter battery to the helicopter. After the binding
process the two swash plate servos (2) and the pitch servo
(3) immediately go into their basic position.
On the Piezo gyro (4), the LED (5) blinks slowly, then
rapidly and approx. 3 seconds afterwards, the tail servo
(6) also goes into the start position. The helicopter may
not be moved or turned during this time.
If you operate the gyro in normal mode, the LED (5) goes
out after initialisation. In AVCS mode it is then continuously
lit.
Figure 3
12
Figure 4
Right after connecting the battery, the speed adjuster also performs an internal adjustment and afterwards
transmits some short, high-frequency impulses to the engine. However, as long as not all engine connections
are connected with each other, the sound sequence emitted by the adjuster cannot be heard.
Now use the trim buttons to set the values for the nod, roll
and tail function exactly to the middle setting.
When you now move the control stick for the pitch function
back and forth, the pitch compensator (1) must slide up
and down on the main rotor shaft and in doing so change
the angle of attack of the rotor blades (see fig. 5 A).
If you push the control stick forward, the angle of attack
must be increased so that the helicopter can take off.
The maximum angle of attack of the rotor blades should
be -12° and +12° if the remote control is switched to the
flight mode for acrobatic flight. If this is not the case check
the programming on the remote control transmitter.
You can best measure the angle of attack
using an optionally available pitch setting
gauge (see fig. 20, pos. 1).
Then check the direction of movement of the swash plate.
If you move the control stick for the nod function forwards
and backwards, the swash plate (2) must also first tilt first
forwards and then backwards (see fig. 5 B).
If you move the control stick for the roll function right and
then left, the swash plate must first tilt right and then left
as well (see fig. 5 C).
Figure 5
13
If both control sticks are in the middle setting, the swash
plate must sit at an exact 90° angle to the rotor shaft (see
dashed lines).
The servo lever on the nod servo (3) must be vertical and
the servo lever of the roll servo (4) should be horizontal. If
the levers do not sit in exactly the correct position, you
can correct this with the basic trimming and/or the subtrimming.
If the swash plate still sits on a slight angle despite correct
setting of the servo lever, this can be corrected by adjusting
the length of the linkage rods (5). To do so, remove the
linkage's ball end eyelets carefully off the ball with a ball
end spanner. By twisting, you adjust the length of the rods
to the required measure and afterwards reattach the ball
end eyelet.
14
Important!
Figure 6
Always remove the helicopter battery before you carry out settings on the model mechanics.
Next the paddles (1) of the auxiliary rotor are to be checked.
Not only must the paddles have the same distance (A) to
the control sticks (2), but they must also be absolutely
parallel to each other. To check that the paddles are
positioned correctly towards each other, look at the rotor
head from the side from a distance (see fig 7, lower small
figure).
It is also important that the two linkage levers (2) are at
the same height as the paddle lever. The levers should
not point slightly upwards or downwards.
After loosening the grub screws on the paddles or linkage
levers you can make the necessary fine adjustments.
Figure 7
15
e) Checking the tail rotor
Basic settings of the tail rotor linkage
Important!
Before you check the linkage of the tail rotor, it is necessary to switch the gyro to the normal mode or to set
the gyro sensitivity to "0". Only then does the tail servo run in the basic setting and stays in this position if
the helicopter is not moved.
Put the transmitter into operation and connect the
helicopter battery to the helicopter. After the binding
process the gyro carries out an initialisation. Immediately
thereafter the tail servo runs in the basic setting. The LED
on the gyro (see fig. 4, pos. 5) should not be lit (normal
mode).
Check the positioning of the tail rotor linkage lever. The
rear axle (1) must sit at a 90° angle to the rotor shaft (2).
The lever of the tail servo (3) and the linkage rod (4) must
also form a 90° angle.
When moving the tail rotor control stick, the sliding sleeve
(5) should move as far from left to right as possible, without
reaching the mechanical end points in either direction.
Important!
Along with the settings options on the
transmitter the servo travel of the tail servo can
be limited using a settings control on the gyro.
For this reason we recommend that you set
the gyro limitation to "0" and programme the
required servo travel on the transmitter.
Checking the toothed belt
First check the correct fitting of the toothed belt (1).
The toothed belt is driven with a belt pulley (2) on the
main pinion.
If you turn the main rotor clockwise (as seen from above),
the upper tail rotor blade (as seen in flight direction) must
turn to the back and the lower tail rotor blade must turn to
the front.
For a better illustration, the twisting of the toothed belt is
shown schematically in figure 9.
16
Figure 8
2
1
Figure 9
In order for the toothed belt to run smoothly through the
tail section pipe, it is guided over two support rollers at the
pipe entrance (fig. 10 A).
To test the toothed belt tension, gently and carefully press
the belt inwards using a small screwdriver between the
support roller and the belt pulley.
If the belt is able to be pushed to the middle line then the
tension is correct (fig. 10 B).
If the belt can be pushed nearly to the other side of the
belt then the tension is too slight (fig. 10 C).
If the belt cannot be pushed to the middle line then the
tension is too high (fig. 10 D).
In order to set the belt tension correctly, loosen the two
tail pipe section attachment screws (1) and the fastening
screw for the gyro plate (2).
Once you have also loosened the two screws on the
elevator unit, you can now either push the tail pipe further
into the chassis or pull it out a little.
Once the belt tension is perfected, tighten the screws
again.
A
B
C
D
Figure 10
Figure 11
17
f) Balancing the helicopter
Before you can take your first test flight with the helicopter you need to check the correct positioning of the centre of
gravity. Insert the helicopter battery and mount the cabin hood to do so. Then place the model on a level surface.
Position the two main rotor blades at an exact 180° angle
to one another and set them in such a way that they sit
exactly along the lengthwise axis of the model.
Lift up the model as shown in the adjacent figure with two
fingers on the paddle rod (1).
If the centre of gravity is correct, the model will not tilt
forwards or backwards. If the tail pipe (2) sits on an angle
to the level surface you can move the helicopter battery to
set the correct centre of gravity.
After completing the adjustments, reconnect the engine
to the speed control. Now your model is ready for its first
test flight.
Important note!
Before starting to fly your model helicopter, you should take note of the following information first.
Figure 12
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g) Basic information concerning the control of model helicopters
Before operating your model, you should know the available control possibilities first in order to be able to safely
control the model. The model helicopter is controlled via the two control sticks on the remote control transmitter. The
following functions are available:
In the example provided (see fig. 13 A, B, C, D on the next page) the remote control is operated in mode
II (see remote control operating instructions).
Pitch function (fig. 13 A)
The flight height of a helicopter is affected by the pitch function. The control of this function is carried out with the left
control stick. To that effect, the control stick can be moved forward and backward. Unlike with other control functions,
the stick does not keep springing back to the centre position.
Pulling the control stick fully towards you switches off the engine and the rotors stop. If you push the control stick slowly
away from you, the two rotors will start up and their speed will increase in line with the stick position. When the control
stick reaches the centre position, the helicopter should hover (see fig. 13, pos. A).
The altitude can be regulated either by changing the speed of the main rotor or by collective adjustment of the blades.
To do so, the pitch compensator is lifted with the aid of the pitch servo (the helicopter climbs) or lowered (the helicopter
descends).
Tail function (fig. 13 B)
As the main rotor of the helicopter rotates clockwise (as seen from above), the reactive torque makes the helicopter
turn its nose to the left and the tail to the right. To avoid this, the helicopter has a tail rotor. Depending on the speed and
the angle of attack, this pushes the tail anticlockwise to a greater or lesser extent so as to equalize the reactive torque.
This pitch/tail mix (revolution mix) takes place in the transmitter and can be adjusted separately. In addition, the Piezo
gyro ensures that the tail does not rotate in an undesired way, e.g. caused by sudden wind from the side.
The control of the tail function is carried out with the left control stick. If the stick is moved slightly to the left, the nose
will turn left (as seen from above or behind). If you steer to the right, the tip of the fuselage turns likewise towards the
right (see fig. 13, pos. B).
Roll function (fig. 13 C)
With the roll function you can move the helicopter sideways to the right or left (as seen from behind). The control of this
function is carried out with the right control stick. If the stick is moved slightly to the left, the swash plate will be tilted to
the left with the aid of the roll servo, and the model will drift sideways to the left. If you steer to the right, the model drifts
sideways to the right (see fig. 13, pos. C).
Nod function (fig. 13 D)
With the help of the nod function you can move the model helicopter forward and backward. The control of this function
is also carried out with the right control stick. If the stick is moved forward slightly, the swash plate will be tilted forward
with the aid of the nod servo and the model will fly forward. If you pull the stick backwards, the model flies backwards
(see fig. 13, pos. D).
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20
Figure 13 A, B, C, D
h) Practical flight tips for the first start
• For your first flight attempts, we recommend picking a free space of approx. 5 x 5 m.
• The ground should be flat (concrete, tiles, parquet flooring, or similar) to allow you to determine already before the
take off if the model tends to drift off in a particular direction.
• Place yourself exactly behind your helicopter. As long as you can see your model from behind, the latter will react to
the control commands: right, left, forward, backward exactly as you see it. Whereas, if the cockpit of the model points
towards you, it reacts exactly the opposite way from your steering commands at the transmitter.
i) Trimming the helicopter
First activate the transmitter and then connect the charged helicopter battery to the controller.
Push the pitch stick from the bottom position (engine off) carefully forward and observe the response of your model.
Shortly before the helicopter starts hovering, you can already determine in which direction your model wants to move.
If the helicopter wants to turn to the right with the nose of the fuselage, then reduce the speed and push the steering
trim button for the tail function gradually to the left. Then push the pitch stick carefully forward again and check if the
adjustment was sufficient. Keep repeating this procedure until the helicopter no longer has any tendency to turn to the
right. If the nose of the fuselage turns to the left, carry out a right trim adjustment to the right.
Figure 14
21
If the helicopter is trying to drift or tilt sideways to the right, reduce the speed and gradually move the roll function trim
button little by little to the left. Push the pitch stick carefully forward again and check if the adjustment was sufficient.
Repeat the procedure until the model does not show any tendency to drift to the right. If the helicopter wants to drift
sideways to the left, carry out a trim adjustment to the right.
Figure 15
If the helicopter is trying to drift forwards, reduce the speed and gradually move the nod function trim slider backwards.
Then push the pitch stick carefully forward again and check if the adjustment was sufficient. Repeat the procedure
until the model does not show any tendency to drift forward. If the helicopter wants to drift backward, carry out a trim
adjustment forward.
Figure 16
The model will always tend to fly into one direction. As long as this tendency is minimal or the directions are
always different, then the trimming process can be ended.
If your model doesn't show a large tendency to drift in a certain direction in hovering flight, then change the respective
linkage rod so that the model hovers stable as before but that the trim function returns to the middle setting. The fine
tuning can then be carried out using the basic (sub) trimming.
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j) Modifying the steering directions
If your model does not react as per the previously described steering/control directions, or you wish to assign the sticks
differently on your transmitter, you can use the mode setting on the transmitter to set any desired control combination.
Further information in this respect can be found in the enclosed operating instructions for the remote control.
k) Practical tips for the first hover flights
Your model helicopter in now ready for the first test flights and you can start training. However, even during flight
training, you should definitely keep in mind some basic things.
• For hover flight training, the tail of the helicopter must always point in your direction.
• To start, lift the helicopter approx. 20 – 30 cm from the ground, in order to be able to have it touch down quickly in
case of an emergency landing.
• In case of an emergency landing, do not retract the pitch stick too quickly, as the helicopter will touch down very hard.
• If the rotors are blocked by an obstacle, then pull the pitch stick immediately to the lowest position in order to switch
off the engine.
• At the start location, draw a marking on the ground and try maintaining the helicopter in a hover directly above the
marking.
Caution!
If you notice after a few minutes that the engine performance of your electronic helicopter declines, cease
operation immediately. Then leave the helicopter battery to cool down before charging it. Avoid, in any
case, a total discharge of the helicopter battery!
• If after a few flights you develop a keen feel for flying your helicopter, you can carry out further optimizations.
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10. Fine tuning the model helicopter
a) Setting the track alignment
To ensure that the helicopter steers and flies with exactness, the two rotor blades need to be running at the same
height within the rotor rotation plane. One rotor blade is marked with a red and the other with a white marking at the tip
to allow you to check and also adjust this alignment. If you now watch the helicopter in hovering flight and then look
exactly at the rotor plane from the side, you will immediately see whether the blades are running at different levels (fig.
17 A) or whether they are running in a clean line (fig 17 B).
A
B
Figure 17
Caution!
Do not do anything further to the rotor head until you have disconnected the helicopter battery from the
flight controller to prevent unwanted starting.
Besides the paddle rod (1) the rotor blades are also
controlled via rods from the pitch compensator (3) whose
rods can be adjusted in length (2). With the correct paddle setting, these run absolutely exactly in line in hover flight
and thus stabilize the rotor circle plane. If now, for example,
the rotor blade with the red marking happens to be running
too high, the linkage rod to this rotor blade will need to be
shortened.
This reduces the angle of attack of the rotor blade with
the red marking and due to the lower lift it will then no
longer run as high as before.
To do this, carefully unhitch the lower ball head eyelet (4)
from the linkage with a ball end spanner and turn the eyelet
one turn further along the linkage.
Reattach the eyelet and make sure the linkage is seated correctly. Start the helicopter again and check to see whether
your correction has already been enough to solve the problem. Another way is to lengthen the linkage of the blade
which is running too low so that it will generate more lift and thus run higher.
Figure 18
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b) Balancing the rotor blades
Smooth and virtually vibration-free running of mechanical
components will not be possible unless the main rotor
blades (1) and the tail rotor (2) have been balanced. To
do this, you can use standard rotor blade scales, propeller
balancers (3) or even a home-made jig of your own (4).
What is important here is that the rotor blades are precisely
aligned to each other along a straight line (5) and can
pivot in either direction with the very minimum frictional
resistance.
Then stick small adhesive film strips around the nose of
the lighter rotor blade until the weight of the two rotor
blades is balanced.
To better illustrate this, the figures have white
rotor blades as opposed to the original rotor
blades.
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c) Setting the pitch values
The setting of the rotor head mechanism and the setting
of the remote control should be selected to allow a
maximum rotor blade angle of attack from –12° to +12° in
extreme cases (see fig 20, sketch).
The setting and checking of the pitch values for the different flight modes is carried out using an optionally available
settings gauge.
Hovering flight and/or simple flights only require small pitch
values as they allow sensitive helicopter flight control.
Acrobatic flight requires the pitch values to be larger and
for auto-rotation you should set a maximum possible pitch
value of +/- 12°.
Figure 20
The following combinations have proven to be the ideal starting point for setting your personal values for different flight
modes:
Hovering flight and simple flights (fig. 21 A)
Pos. Stick position % Motor output % Pitch value
(Stick) (Power)
1 0 0 -3°
225 40 1°
3 50 70 5° to 6°
475 85 7°
5 100 100 8° to 9°
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100
75
50
Power
25
0
25
50
Stick %
75
A
100
12°
6°
0
Pitch
-6°
-12°
A
50
25
0
Stick %
75
100
Figure 21 A
Simple acrobatic flight (fig. 21 B)
Pos. Stick position % Motor output % Pitch value
(Stick) (Power)
1 0 90 -5°
225 85 0°
3 50 80 5 to 6°
4 75 85 7 to 8°
5 100 100 9 to 12°
100
75
50
Power
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B
0
Extreme 3D acrobatic flight (fig. 21 C)
Pos. Stick position % Motor output % Pitch value
1 0 100 -9 to -12°
2 25 90 -4°
350 80 0°
475 90 6°
5 100 100 9 to 12°
100
75
50
25
(Stick) (Power)
Stick %
75
100
12°
6°
0
Pitch
-6°
-12°
12°
6°
25
0
50
Stick %
75
B
100
Figure 21 B
50
Power
25
0
25
50
Stick %
75
C
100
0
Pitch
-6°
-12°
C
50
25
0
Stick %
75
100
Figure 21 C
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Caution!
In the setting for hovering flight to simple acrobatic flight the model should hover when the pitch control
stick is in the middle setting.
However as soon and you switch to 3D flight in hovering flight, the helicopter will lose altitude rapidly as the
rotor blade angle of attack is only 0°.
For this reason we recommend that before you move on to 3D flight, you should change the pitch curve in hovering
flight or simple flight such that an approximate 70% stick deflection is required for hovering flight. This way you can
switch to 3D flight mode while hovering without a rapid change in altitude.
Important!
Never move the flight mode switch when the helicopter is on the ground with the rotors stopped as the
rotors may rapidly start. Always let the rotors start rotating in normal flight mode before you switch mode.
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d) Setting the piezo gyroscope
The Piezo gyroscope or gyro's task is to ensure that the tail of the model always points in the right direction and is not
pushed to the side due to air swirls or gusts of wind. The gyro is placed between the receiver and the tail servo (see
sketch at fig. 22). It contains a Piezo element which allows it to recognize the rotation of the helicopter fuselage along
the vertical axis (rotor shaft). An integrated analysis electronics system then creates a reactive control impulse for the
tail servo.
The gyro directly transmits directional changes initiated by the pilot to the tail servo.
The gyro has various switches and controllers for adjustment, which are factory preset. However, you can adapt these
settings to your special wishes.
Operating and display elements of the Piezo gyro:
1 LED display
2 Delay regulator
3 Controller for the servo path limitation
4 Switch for changing the servo direction
5 Switch digital/standard servos
6 Gyroscope housing
7 Receiver connection for the gyroscope sensitivity
8 Receiver connection for the tail servo
9 Connector plug for the tail servo
10 Servo plug
11 Tail servo
Description of the controls and display elements:
1. LED display
The LED display (see fig. 22, pos.1) serves to display the different gyro modes:
LED flashes rapidly: Initialisation and matching (performed right after activation).
LED blinks slowly: Missing servo signal from the receiver.
LED is off during operation: Gyro is working in normal mode.
LED is lit during operation: Gyro is working in AVCS mode.
LED always blinks twice: The current neutral setting of the servo deviates from the saved neutral setting.
Figure 22
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