Ikarus Modellflugsport, Inh. Norbert Grüntjens
Im Webertal 22 · 78713 Schramberg-Waldmössingen
Tel.: 0(049)7402-929190 · Fax.: 0(049)7402-929150
Email: info@ikarus-modellbau.de
Internet: www.ikarus-germany.com
! " #
REV03-191001-IB
Check yourself! Which other helicopter offers:
extremly lightweight Frame
suitable motors from 8,000 to 24,000 rpm.
12 different gear ratios for the main rotor.
3 different gear ratios for the tail rotor.
12-20 cells battery range.
Ball bearings throughout the drive section.
5 ch electronic R/C with 90° CPM-program or
ordinary 4 ch R/C to use with mechanic mixer.
from calm hovering to hot aerobatics.
very quiet in use.
This ECO is:
very economic
easy to build and understand
easy to fly and ...
ECO - the electric helicopter is designed and developed in germany.
Years of experience assisted in producing this helicopter.
Energy economics is the most sensible subject in creating a
helicopter with an electric motor. 12-20 cell batteries and charging
equipment is available at very favorable conditions so this had been the target we had to reach. The basic
design is extremely lightweight though still very solid. The special chassis eliminates weight-consuming
screws and parts. Ball bearings on all moving parts reduce the overall friction in the mechanical section.
Various pinions are available to adopt the transmission and the tailrotors speed to the motor and to the flyers
habits. A belt drives the tailrotor with hardly any loss of power. The special mechanical mixer allows the use of
a standard 4 channel r/c without electronic mixing facilities. Those who tend to use an advanced electronic
r/c-system can easily use a 4 x 90° swashplate program with 3 servos, eliminating even the weight of the
mixer. The steering is designed to be strong and very efficient. Flying the ECO means first class economics
and professional flying potential - for the beginner as well as for the 3D ambitious. A wide variety of tuning
parts for even less weight or more performance is available in your hobby store. Ask your dealer for IKARUS
parts.
Order
No.
70103
702012
702014
173504
(35 MHz)
174004
(40 MHz)
720613
720615
720654
721052
721053
3-1635
1. Many thanks ...
2. Care ...
3. Warranty:
4. You will need:
(not included in
this kit!)
5. Dimensions:
... for your purchase. This product is checked and carefully packed in our facilities. Anyhow,
please check immediately at your end and make sure that this kit is complete and undamaged.
You will understand that we cannot accept any claim arising to a later date.
... is a very sensitive subject for this high performance helicopter. Assembled and flown by
skilled hands it offers fun and satisfaction. Anyhow, it is not a toy and therefore shall be
operated with care and responsibility. We have to reject any claim arising from inexperienced
use or misuse at all.
Helicopters are subject to various physical rules which can turn your hobby to success as well
as a full crash. Our job has been to develop and supply a high performance model. The
helicopter in your hands now is the result of experience, tests and trial. The assembly now is
your part. We wrote this manual to assist you in any way. Please follow the steps exactly, have
a look at the measurements and follow them exactly as written down.
Therefore: Please assemble the model as carefully as possible. If doubts are arising
please have a break, think twice or ask an experienced modeler for assistance. It will
pay off!
The parts are packed as required in the steps. Start reading this manual completely and get
familiar with the system. Open the bag of need only and leave the unused material aside. Use
small cups and carefully assemble step by step, bag by bag.
We guarantee that this product is free of factory defects in material and workmanship for a
period of 120 days from date of purchase. This warranty does not cover defects from misuse.
By the act of using this model the user accepts all resulting liability.
Item
The motor:
The speed
controller- V90
or
The speed
cotroller V65
The R/C-System:
Gyrosystem:
Battery:
Connectors:
Description
Aero Maxx 30 - 3 - modern power technique. Brushless,
therefore maintenance - free and with an high efficiency.
V90 - High performance motor controller for brushless motors,
90A max., 7-17 cells.
V65 - High performance motor controller for brushless motors,
65A max.,12-24 cells
Lexors Nova 4 - Standard 4-channel R/C transmitter using 4
Micro-Servos and a Y-connector to the speed controler or 5
Channel computerised R/C with mixing facilities and 4x90°
swashplate program.
ProfiGyro - With only 24g our top model, with heading lock and
automatical fade out, has an unusual light weight -at the same
time the ProfiGyro is very precise and has a low energy
consumption. Suitable for professionals and beginners as well.
The MiniGyro and the extremely small MicroGyro are also
suitable, with a very good gyro effect, but with less functions.
use NiCad with 2 x NC Pack 8 /10 cell 1700 - 2400 mAh
8 cells,3000 mAh,NiMH
10 cells,3000mAh,NiMH
The gold plated system offers a very low resistance, is free
from corrosion and is temperature resistant.
6. Materials used:
To assemble this model you will need:
Hobby knife
Sander
Screwdriver (Phillips #1 and small slotted)
Hex wrench 1x1.5 mm - 2x2 mm - 1x2.5 mm
Needle nose pliers
Bladegauge, Order No. 603445
Nut driver 4mm - 4.5 mm - 5 mm - 5.5 mm
Bowls for small parts
Cyano glue
Screwlock, Order No. 320006
-
-
-
-
-
-
-
-
-
-
7. Abbreviations:
To make the manual clearly and short we shall use certain abbreviations as follows:
8. Screws: Most screws in this kit have metric threads and are described in the following way:
Head
Diameter
Length
Your special attention is
required!
Use cyano glue!
Assemble the shown
quantity!
Assemble the left side
the same way as the
right side.
Use some oil.
Use screw lock as
shown.
The part shown is not
included in this kit.
The subject is shown in
true scale.
The part has to move
easily without any
friction.
Different heads are used:
Caphead (CH), Lenshead (LH), Countersunk (CS), Roundhead (RH), phillips or
slotted types
M4x20 mm CH means 4 mm metric thread, 20 mm length with a cap head.
Tighten the crews very carefully. Do not use too much force and avoid damaging the
material.
Let's start with the assembly.Take the specific parts out of the packing and assemble them according to the
shown graphics. Please pay attention to the pictograms relating to play,lubricant etc.
Depending on the version you intend to assemble, some steps are for the mechanical mixer only, some other
are necessary only if used with a 5 ch microcomputer radio.
The particular steps are marked with
For the mechanical mixer version only! For the microcomputer version only!
You have to decide now which version you will build. You will always be able to change the layout of your
helicopter but mayor reconstruction will be neccessary.
Mixer body
90° Lever with bushing
Tailrotor lever with bushing
Ball, brass
M2 mm Nut
M2x8 mm LH Screw
1x
3x
1x
4x
3x
8x
67575
67577
67543
67576
67582
67603
Attention: Pin 67625 has to disappear completely in the
notch !
Tuning Parts are available for the
part numbers marked in grey.
Fasten the
set screw on
the flat.
Avoid friction
here!
Tighten slightly.
Downwards
Fasten the
set screw on
the flat.
Tighten the stopper temporarily only. It
will be adjusted later.
Bottom view
1x
11x
2x
2x
1x
Frame
M2x8 mm LH Screw
M2x30 mm LH Screw
M2 mm Nut
Swashplate handle
- Move the main gear upwards
against the lower ball bearing.
Press in the center!
- Gently move the collar 67624
against the upper ball bearing.
- Tighten the M3x4 mm set screw
67574.
67517
67603
67602
67582
67629
1x
11x
2x
2x
1x
67517
67603
67602
67582
67629
Frame
M2x8 mm LH Screw
M2x30 mm LH Screw
M2 mm Nut
Swashplate handle
10 mm
20 mm
30 mm
Just omit the mechanical mixer if you
intend to build the microcomputer
controlled version.
In case the skids fit too tight
into the cross members
enlarge the opening using a 6
mm drill or use a fan to warm
the cross members.
2x
2x
4x
2x
4x
67916
67917
67915
67587
67603
Undercarriage cross
member
Undercarriage alu skids
Tube
O-Ring
M2x8mm LH Screw
ca. 6 mm
Blade holder
Ball bearing 4x11x4
mm
Washer 4 mm
Blade shaft
O-Ring
Mixerlever with bushing
M2x10 mm LK Screw
Rotor center unit
M3x25mmCH Screw
M3mm nyloc nut
1x
2x
2x
2x
2x
1x
67590
67591
67635
67601
67636
67701
Collective pitch
compensator
center hub
arm with bushing
Y- arm
M2x12 mm LH Screw
Shaft (Y- Arm)
Swashplate complete
2x
4x
67511
67569
The ball clips 67635 are supposed to move
without play, but stilll easily. If those are difficult to
move, press the clip on the top of the ball carefully
with flat nosed pliers together. Please start with
less pressure, check then the movableness ;
press again until you can swivel the clip easily.
Please check very carefully:
Make sure that you did not forget any part,
especially the washers?
The Blade holders move gently and without
friction?
Fasten temporarily
only.
67632
67509
67588
67578
67600
67639
67555
67581
2x
1x
2x
2x
2x
1x
2x
4x
2x
10 mm
20 mm
123 mm
123 mm123 mm
Use high performance lubricant in the area of the
shaft and the spacer if necessary.
1x
2x
1x
2x
4x
2x
67610
67608
67609
67589
67561
67582
Flybar Seesaw
Seesaw Lever
Flybar
Paddle
M2x6 mm LH Screw
M2 mm Nut
Do not tighten now!
Mark 123 mm as shown. Use the scale at the right side.
Line up with the mark
on both sides.
Fasten the M2 x 6 mm screw when
the adjustment have been done.
Make sure that the flybar and the seesaw move
without friction.
Look from the side: seesaw,
arms und paddle have to in
line to each other.
54,5 mm
28 mm
Use only suitable tools (such as ball joint pliers,
Order No.:67958!) for attaching and detaching the
ballends 67564, 67565 !
Bend the pushrods slightly, to
avoid that the y -Arm brushes
against them!
This ballend has to be perpendicular to it.
Y-Arm
1x
1x
4x
2x
4x
2x
M2x16 mm CH Screw
M2 mm Nut
Ballend, short
M2x8 mm Threaded rod
Ballend, long
M2x33 mm Threaded
The lengths of the pushrods indicated
in this steps are the results of trials
and experience. For the beginning we
strongly recommend to follow the
instructions very accurately. Your
safety and the models safety rely on
your work here.
67599
67582
67564
67534
67565
You have better
access to the
ball if you lower
the swashplate.
93 mm
Have a break here.
- Check all linkages for gentle and easy
movements.
- Check again the exact length as indicated.
Avoid friction in the pitch compensator, in the
mixer levers and in the flybar.
Please keep in mind: Unnecessary
friction causes increased energy
consumption and reduces your
flight time. Besides, friction
reduces the control response.
Make it a good rule to check all linkages after
each flight, especially after each hard landing.
4x2x67565
67533
Ballend, long
M2x72 mm Threaded
rod
2x
1x
2x
2x
2x
1x
2x
2x
4x
1x
1x
1x
1x
1x
2x
1x
1x
1x
1x
1x
67542
67549
67576
67566
67603
67550
67574
67564
67561
67544
67538
67545
67537
67702
67571
67548
67920
67919
67606
67546
67541
Blade holder
Hub
Ball
Ball bearing 2x6x3 mm
M2x8 mm LK Screw
Tail rotor shaft
M3x4 mm set screw
Ballend, short
M2x6 mm LK Screw
Tail pitch plate
Collar
Outer slide ring
Slide bush
Pulley
Ball bearing 3x7x3 mm
Housing
Belt
Tailpipe
Vertical fin
Spacer
Pitch lever
Washer 2 mm
M2x14 mm CH Screw
The belt can be passed through the tailboom
easily, when you tighten up temporarily the
belt through the clevis of the tail control snake
(in the cardboard box). After that, pull the tail
control snake through the boom.
Please watch out for the alignment of the
pushrods,while you are assembling.
Use cyano glue to fix the outer slide ring onto
the collar. Avoid spoiling glue to the slide
bush. The collar must move without friction.
counterclockwise!
Allow a small gap
between the slide
bush and the
outer slide ring.
Gear meshing is a rather sensitive subject.
Wrong adjustments cause high friction and
unnecessary wear and tear whereas the
correct adjustment is very simple.
Loosen the motor screws.
Put an unused part bag between pinion and
main gear.
Move the motor with the pinion against the
main gear and tighten the screws.
Remove the plastic bag.
Adjust the meshing in the same way at the
taildrive gear.
*)
Please keep in mind:
You have to use different pinions
regarding the used motor or the
number of used battery cells. (See
page 28 and the following
ones).Follow the operating
instructions of the motor and keep
close to the described features of the
Bottom view
Plastic Bag
1x
2x
2x
1x
1x
70103
67605
67631
67608
67574
Motor (not included in
Kit No.: 67900)
M3x8 mm CH Screw
Washer 3 mm
Pinion 10 T
M3x4 mm set screw
Watch out for the direction
of rotation!
Watch out for the direction
of rotation!
1x 67919 Tailpipe
Properly adjust the belts tension.
Remember, too much friction costs
energy. Energy is flight time and flight
performance!
Make sure that the belt runs straight in the tailboom.
Insert the tailboom into the frame.
Twist the belt by 90° to the left!
Pull the belt over the pulley.
Pull the tailboom backwards, adjust the belts tension
and tighten the M2 x 30 mm screws.
The belts tension:
If you can compress the belt by
abt. 5 mm the tension is just right.
If you can compress the belt
completely, the tension is low.
If you can hardly compress the
belt, the tension is too tight.
Loosen the two M2 x 30 mm screw
for inserting the tailpipe.
Tighten the screws again after
adjusting the belt tension.
Have a break here. Check all screws and check the moving parts for
easy operation. Pay special attention to the levers of both rotors and
the gear meshing of the central drive unit. Don't forget to use
screw-lock on certain marked parts. Do not underestimate the belt
drive! Once it is properly adjusted it moves with hardly any friction.
Misadjustment can cause a lot of damage and is a waste of energy.
6 mm
67523 67526 67523
67513
Bowden wire sheat
Steel wire
Cover
Screws
Carefully select the components of your r/c-equipment in view of quality and weight. Keep in mind:
Saving 1 g of weight gives you 1 s more flight time!
Using unsuitable components can cause serious damage!
If you have the choice, choose the more sophisticated equipment.
Connect the components as suggested by the manufacturer.
Use the rubber servo grommets to prevent damage from vibration.
Use the installation material provided with the servos.
Make sure that all servos are in neutral position.
In order to clarify the general layout
we stripped the drawing.
1x
2x
1x
67526
67523
67513
Tie rod M2x160 mm
Quick link
Tailrotor snake
The position of the mixer base
plate is exactly in the center of the
Main frame. Fix it temporarily with
some tape.
Adjust the rod length. The outer
edge of the tailrotor mixer lever
should lead through the screw as
indicated.
abt. 167 mm
Make sure that all servos are in
neutral position.
Use the rubber servo grommets
to prevent damage from vibration.
Attention: Never turn the servos manually. The gear unit of
the servos is not constructed
Follow the instructions very carefully. The rod lengths had
been verified by experienced flyers and work fine in most
cases. Customers having experience with helicopters
should also follow the instructions in order to find a basic
adjustment.
Tailrotor pitch lever,
bottom view
You may bore it
open, because the
steel wire has to get
passed through the
96 mm
67523 67530
67523
2x
4x
2x
4x
67530
67523
67533
67565
Tie Rod M2x99 mm
Quick Link
Tie Rod M2x72 mm
Ballend, long
67565
67533
67565
According to the used servos, the pipes are supposed to to get bended a bit in their centre, just to avoid friction at the
abt. 124 mm
View from the top.
View from the top.
Make sure that you have a basic adjustmenst as
indicated above.
If the Servo turns to the right, the left 90° lever moves
the aileron rod upwards. The right 90° lever pulls the
aileron rod downwards.
The swashplate tips to the right so the helicopter starts
rolling to the right side.
In order to obtain equal steering response to both
sides, the adjustments have to be done as shown.
View from the left side. View from the front.
Tie Rod M2x12 mm
Quick Link
Servospacer 3 or 5 mm
Ballend, short
Tie Rod M2x52 mm
Ballend, long
Ball
M2x8 mm LH Screw
M2 mm Nut
67582
10 mm
67576
67603
71 mm
67565
67531
67565
67527
67523
67520
67564
67531
67565
67576
67603
67582
1x
1x
2x
1x
1x
2x
1x
1x
abt. 36 mm
67523
67564 67527
The length may vary according to the final servo position. Make
sure that the mixer base plate is exactly in the center of the main
frame and the 90° lever is at a right angle.
Use a 3 or 5 mm Servo
spacer, 67520,
depending on your servo
View from the top.
Make sure that the rod doesn't touch the main
rotor shaft in any position. Use the 3 or 5 mm
spacer to get a suitable servo position
Make sure that you have a basic adjustmenst as
indicated above.
If the servo turns to the front, the left 90° lever moves
the elevator rod upwards.
The swashplate tips to the front so the helicopter starts
to bend the nose downwards
In order to obtain equal steering response to both
sides, the adjustments have to be done as shown.
Keep in mind that the pitch servo shall be installed
oposite the elevator servo so there should be some
space left. Use either the 3 mm or 5 mm Servo spacer
to adjust for the correct offset of the servos and keep in
mind that the rod never touches the main rotor shaft.
Tie rod M2x12 mm
Quick link
Servospacer 3 or 5 mm
Ballend, short
Tie Rod M2x52 mm
Ballend, long
Ball
M2x8 mm LH Screw
M2 mm Nut
67582
6 mm
67576
67603
17 mm
67527
67523
67520
67564
67533
67565
67576
67603
67582
1x
1x
2x
1x
1x
2x
1x
1x
1x
abt. 45 mm
The length may vary according to the final
servo position. Make sure that the mixer
base plate is exactly in the center of the
main frame and the 90° levers are at a right
angle.
67565
67565 67527
Use a 3 or 5 mm Servo
spacer, 67520,
depending on your servo
View from the top.
Make sure that the rod doesn't touch the main
rotor shaft in any position. Use the 3 or 5 mm
spacer to get a suitable servo position
You will see now how the mixer works:
The pitch servo moves the base plate backwards.
The elevator, aileron and tailrotor servo remain
unchanged. The 90° levers "translate" the horizontal
movement of the ground plate in vertical movement
of the tie rods to the swashplate. The swashplate
wards and increases the pitch value of the manrotor.
At the same time, the mixer lever for the tailrotor
pulls the tailrotor snake giving increased pitch to the
tailrotor blades.
The system is simple but effective. It allows you to
use a standard 4 -Channel R/C. With a Y-connector
the pitch signal is relayed to the speed controller.
Increasing pitch will automatically increase the motor
rpm.
max. pitch +9°
hoover pitch +5° until +6°
min. pitch -1° until -2°
Our speed controller Heli 4000 (No.:720667) is
already installed with an exact throttle curve.
Carefully select the components of your r/c equipment in view of quality and weight. Keep in
mind:
Saving 1 g of weight gives you 1 s more flight time!
Using unsuitable components can cause serious damage to helicopter!
If you have the choice, choose the more sophisticated equipment.
Connect the components as suggested by the manufacturer.
Use the rubber servo grommets to prevent damage from vibration.
Use the installation material provided with the servos.
Make sure that all servos are in neutral position.
In order to clarify the general layout
12 mm
67513
tailrotor snakecasing
Steel wire
Cover
Make sure that all servos are in
neutral position.
Use the rubber servo grommets
to prevent damage from vibration.
Attention: Never turn the servos
manually. The gear unit of the
servos is not constructed for this
kind of actions.
1x 67513 Tailrotor snake
Follow the instructions very carefully. The rod lengths had
been verified by experienced flyers and should work for
most cases. Customers having experience with helicopters
should also follow the instructions in order to find a basic
adjustment.
Tailrotor Pitch lever,
bottom view.
You may bore it
open, because the
steel wire has to get
passed through the
Tie rod M2x52 mm
Ballend, large
M2x8 mm LH Screw
Ball
M2 mm Nut
Tie rod M2x72 mm
Ballend, long
M2x8 mm LH Screw
Ball
M2 mm Nut
17 mm
2x
4x
2x
2x
2x
67533
67565
67603
67576
67582
67582
12 mm
67576
67603
17 mm 17 mm
1x
2x
1x
1x
1x
67531
67565
67603
67576
67582
67582
12 mm
67576
67603
77 mm
67565
67531
67565
View from the front.
The rods length may vary
according to the servo used.
In neutral position the
swashplate should be 17 mm
above the upper bearing
plate.
abt.
77 mm
67565
67531
67565
Shorten the 72 mm rod
down to 52 mm.
View from the top.
Make sure that both rods have the same length and the
swashplate is exactly parallel to the upper bearing plate.
Possible difficulties may arise from the servo mounting.
Therefore please make sure that you mount both servos in the
same way. Either you centralise them in the main frame or they
may rest against the upper or lower bracket.
The more straight the rods are the better steering response you
will obtain.
View from the top.
Make sure that the rod has the same length and the
swashplate is exactly parallel to the upper bearing plate.
Possible difficulties may arise from the servo mounting.
Therefore please make sure that you mount the servos in
the same way. Either you centralise them in the main
frame or they may rest against the upper or lower
bracket. The more straight the rods are the better
steering response you will obtain.
The receiver: You could possibly strip the body for even more
weight reduction. Check with your warranty!
We recommend, Ikarus Master Gyro Order No. 720610, Telegyro
(Order No. 720611), Profi Gyro (Order No. 720613), Micro Gyro
(Order No 720615) and Mini Gyro (Order No. 720654).lightweight
and compact, developed especially for small helicopters.
Use vibration absorbing servo tape to fix the receiver and the gyro
onto the r/c-plates.
The speed controller V90 is a microcomputer based system that
can easily be adapted to any R/C-System. The motor starts only
after certain procedures on the transmitter. The Controler V90 fits
perfectly well into the main frame and allows short wiring to the
battery and to the motor.
When working on the helicopter with a battery
connected accidents may happen due to
unexpected motor start. When working on the
helicopter please always remove the motor
Insert the battery into the undercarriage and adjust the
center of gravity.
Hold the helicopter at the flybar. The helicopters nose
should drop down a little. Adjust by moving the battery to
Keep the wires as short as possible!
Use 2,5 mm² silicon insulated wire to the motor and to
the battery.
Secure the wires against heat and moving parts.
Keep the motor and battery wires away from the
antenna and the receiver.
Avoid connectors between the controller and the
Use an Y-Adapter cable with electronical mixing.
Plug the end of the cable in the output of the receiver.
Now connect both of the ends of the Y-Adapter cable with
the speed controller and the pitch servo.
You may have to extend the connection cable of the
tailrotor servo with an additional extension piece.
17 mm
Select a program for 4 x 90° swashplate
steering. Depending on the R/C-System
one of the servo position is not covered.
It is mostly 0°, so
Aileron, right side is at 90° position
Elevator, rear, is at 180° position
Aileron, left side, is at 270° position
Due to the way of mounting the servos,
the elevator servo has to be reversed.
We strongly recommend the following
values for the first flight attempts:
max. pitch +9°
hoover- pitch +5°until +6°
min. pitch -1° until -2°
Increasing pitch should move the
swashplate straight upwards.
Make sure that the servo travel on these
servos is exactly the same. You may limit
the travel down or upwards. Check the
ultimate swashplate position and reduce
the travel step by step. Adjust for the
same limits on all three servos.
As a general rule, the pitch travel should
increase the tailrotor servo by 30% for
increasing the pitch value, 20% for
decreasing the pitch value. On certain
r/c-systems this value may have to be
reversed. Please check your manual for
details
It is essential for the flying culture that the rotor
blades both move on one track. Mark one blade
with red tape at the tip. You can check the tracking
by operating the helicopter near lifting speed and
watching the moving rotor directly from the side.
If you see 2 blade tip levels, adjustment is
necessary.
If you see the red mark on top, the marked blade
mixer rod should be shortened.
If you see the red mark under the unmarked blade,
the marked blade mixer rod should be enlengthed.
Adjust until you see one level of blade tips only.
Be aware of general safety regulations. Make this
adjustment at the airfield only. Wear eye protectors.
Keep a safety distance of at least 10 ft. Wait until
the rotor comes to a complete stop. Protect the
helicopter against undesired motor start. Work at
the rotor with disconnected battery only.
Mixer Rod
Add the decals according to
your own ideas.(e.g. 67818)
Fix the blades in the
bladeholders. Tighten the
screw just until you can still
turn the blades by hand
using light pressure.
67903
The overlap has to
be at the botton
67932
67558
- Reinforce the fixing
whole with
scrap plastic.
Balance out the rotorblades use coule red
self adhesive tape on the lighter blade so
bath have the same weight. With this the
running of the track can be recongnized
better. Pitch-gauge and rotorblade-balance
are included in adjustmentset 67951
Balance out the rotorblades use coule red
self adhesive tape on the lighter blade so
bath have the same weight. With this the
running of the track can be recongnized
better. Pitch-gauge and rotorblade-balance
are included in adjustmentset 67951
Assembly of Main Blades
Slightly sand both blade sides with 400 grit sandpaper to remove wood
partials. Wipe off sanding material with moist paper towel. Place equal
lengths of lead into the precut blade slots making sure they are below
the blade surface. Fill in epoxy glue and remove all
excess with a popsicle stick edge. When epoxy
is totally set, use very light sand paper to
remove any excess glue. Use the Ikarus Rotor Blade Balancer No.
631080 to balance the blades.
If necessary apply small amounts of epoxy to the tip of the lighter blade
until they balance perfectly. Lay one piece of blade covering with the
sticky side up on the table and place the blade with the underside facing
up on the covering so that you will have about 10 to 15 mm of covering
to roll over the trailing edge of the blade. When applying the covering to
the other side make sure to get the covering as tight as possible without
any wrinkles or slack. Use a sealing iron to apply the covering to the blades. If you do not have an Iron, you may carefully use a heat gun. Check
the balance again and if necessary apply a piece of covering to the
lighter blade for re-balancing.
The transmitter setup may vary according
to the flyers habits. Please adapt this
drawing to your favorite layout. Talking
about "left" and "right" refers to the
helicopters nose seen from the top.
Aileron right
The helicopters rolls to the
right around the tail boom.
Elevator forward
The helicopters moves forward or
accelerates.
Increasing Pitch
The helicopters lifts off.
Elevator back
The helicopters moves backwards or
decelerates
Aileron left
The helicopters rolls to the
left around the tail boom.
Tailrotor right
The helicopters nose turns right
around the mainrotor shaft.
Decreasing Pitch
The helicopters descends.
The least energy consuming condition is
rotation at 0° pitch. Steering in whatever
direction causes increased demand for
motor power. Let us assume that we intend
to maintain a steady altitude.
Elevator forward for example is a steering
input which will consume energy from the
previous hovering level. The helicopter will
move forward but at the same time the
helicopter descends. To compensate this
effect a little increased pitch and motor
speed is required. Once you become
familiar with the helicopter this will not be a
problem anymore.
The same applies for any steering except
for tailrotor left. A mainrotor that turns right
will automatically force the helicopters nose
to turn left. Giving a steering command to
Make it a good rule to execute a preand post - flight check on the complete
helicopter. Check especially for the
correct steering response. Transmitter
input "right" should be "Nose right" on
the helicopter. Unnecessary in - flight
confusion should be avoided.
Check every rod and linkage for easy
operation and safe seating. Check the
screws and nuts. Have an eye on the
motors condition, especially the
collector and the carbons. Be aware of
possible wire damage due to heat, bad
solders or mechanical damage. Check
the blades for possible damage.
Remember: Safety is the first concern,
fun the second! It is not only your
FLIGHT SIMULATOR AND FLYING
SCHOOL
Flying a model helicopter is a fascinating and challenging hobby.
Besides your own flying experiences which you will make, you will
always have the possibility to ask for professional help and advice.
The IKARUS model helicopter and model plane school does exist
since over 20 years and offers a well-balanced training programme
for every level of knowledge and experience. You will get educated
and advised by professional flight instructors in comfortable
courses, which will last normally one week. And your family will
enjoy the trip too, because the Black Forest offers an attractive
environment and surrounding, which is a perfect background for
multiple recreational activitie. By dialing the number
0049-(0)7402-929190, you will get to know more details.
To achieve and gain additional skills and experience in the days
before and after practising with your model plane, we alternatively
offer you our flight simulators. Those are also a great opportunity
for beginners to get familiar with flying a model planes. The Flight
Simulators are unusual efficient, with an outstanding, realistic
simulation and an appealing graphic representation. Apart from that
the price is extremely low compared with the convincing quality and
the performance of the product.
Order-No. Item
31010 EasyFly, Game-Commander-Version (separate trans-
mitter case)
31065 EasyFly, Interface cable version (for connecting with
your own transmitter\ with trainer jack)
31042 Aerofly, Interface cable version(for connecting with
your own transmitter\with trainer jack)
31050 Aerofly Professional, Interface cable version (for con
necting with your own transmitter\with trainer jack)
NEVER
NEVER
NEVER
NEVER
NEVER
ALWAYS
ALWAYS
ALWAYS
ALWAYS
ALWAYS
ALWAYS
ALWAYS
get near the helicopter with the main rotor rotating. Have a good safety
distance. Ask spectators to clear the scene and have at least 35 ft distance.
ignore the local regulations for operating airplanes and helicopters. They come
from experience and good human thinking. Ask your local authorities or hobby
store for details.
fly helicopters near crowds, playgrounds, streets, railway lines, airports etc.
start with unsafe or doubtful equipment.
start if you don't feel confident with your equipment, your location or your
capabilities.
ask an experienced flyer for assistance.
have an eye on wind conditions and changes.
look for a wide and clear operating area. You may need the space!
keep in mind: Safety and life first! Loosing your helicopter costs you some
money, loosing an arm costs your health!
check your helicopter for broken, damaged or loose parts.
maintain the helicopter, the batteries and the charger.
think about your co - flyers and the environment you are guest in.
This hobby calls for wide areas, fair and sportive thinking. Therefore, keep the
airfield clean, don't leave any waste behind and be careful with natural
resources. Batteries can easily be recycled. Ask your hobby store or waste
handling companies for details. Don't throw worn batteries away. Always be
careful with heat. Hot batteries or motors could cause serious damage.
Start the engine.
Increase the pitch.
Observe the tailrotor. If the helicopters starts turning to one
direction compensate with the transmitter trimming.
Increase the pitch and make a small jump.
Observe the intention to roll to one direction. Compensate here
Try to maintain altitude for some time. You now practice first hovering. If
you see the helicopter starts to move in one direction just follow it (that's
why you need a wide area). Compensate and try to keep the "used " area
smaller every time you try. After some time you will be able to keep the
helicopter in abt. 20 x 20 ft. That is fine for the beginning.
Make some more jumps and observe the steering response. Try to keep
the helicopter as steady as possible.
Being able to hover is the essential condition for areal flight. As you have
to land sooner or later you have to come back from free flight to hovering
in order to get the helicopter down safe. The other way costs money.
While hovering, apply elevator forward and the helicopter will dip its the
nose and start to move forward. Increase the pitch a little in order to avoid
descending. Follow the helicopter. Have some elevator back to slow down
and restore hovering. Try this several times until you have safe control.
Only now you may start experiencing the side inputs to the helicopter.
You may always get away from a dangerous situation with increased pitch
and forward flight unless you have a limited area. Forward flight and
The full secret of flying helicopters is not only skill but practice. What normally causes a crash is the wrong command at the wrong time.
Therefore, keep practicing. Fly as much as possible. Start with easy operations until you are familiar with the transmitter inputs and the
helicopters reaction.
Keep in mind:
- Take your time, don't panic.
- A helicopter leaving you turns right if you steer right. A helicopter coming to you steers right as well but from your position it is left!
- Even the best pilot had to learn first.
The most forgotten feature about NiCad cells is
DISCHARGING. In order to avoid the Memory Effect and
increase the lifetime of the battery pack it is highly recommended to discharge the battery completely after use.
Use a 30 Ohm/10-15 VA ceramic resistor, available from
your hobby or electronic shop for 6 h on the complete
pack or 5 Ohm/1 VA for 24 h on the single cell and discharge until both, the resistor and the battery are back to
normal temperature. It may not be practical to discharge
the packs after each use but you should do so at least
after 3 charging periods. Watch the electric model car racers for their charging and discharging equipment. They
usually have the best stuff.
Watch for the recommendation of the manufacturer. Avoid
overcharging as poisonous gas may escape from the cells. Do
not dump NiCad batteries, do not expose them to hot sunlight
or throw them into fire. Never open the cells. Handle damaged
cells with care and wear eyeprotectors and gloves. Damaged
and worn cells can be recycled and should be treated properly.
Finding the correct gear ratio is a rather delicate subject and
needs some experience and trials. Assuming that the motor
has its best efficiency at a certain, specific speed, it must be
your aim to operate the motor in this specific range. Here
efficiency means best energy economics at best power
output. In practice it is not very efficient to operate a motor at
50% speed with high energy consumption as it would perform better at 70% speed at even lower consumption.
Let us discuss the following example:
You have a motor with nominal 25,000 rpm . The efficient
speed would be abt. 17,500 rpm being abt. 70%, depending
on the motor's quality.
The target speed of the main rotor is abt. 1,300 rpm so we
have to find the proper gear ratio.
Various pinions are available from your IKARUS dealer. Let
us do some calculation:
17,500
------------ = 13.46
1,300
The 13 t pinion would offer the longer -, the 14 t pinion the
shorter transmission. Select the shorter one in order to compensate possible deviations on the motor.
Another example. You have a very powerful motor that runs
12,000 rpm only, effective 9,500 rpm. To get the same mainrotor speed, a pinion of 24 t will do.
There are other factors that may influence your decision: If
you go for hot aerobatics, 1,500 rpm mainrotor speed are
interesting. To obtain 1,500 rpm with the 17,500 rpm motor,
the 15 t pinion should be the best.
It is never easy to estimate the efficient speed of your motor.
Consider 70% of the nominal speed as a good value to start
with and select a pinion in the range. If you have doubts, go
for the smaller pinion.
The battery is the second sensible source of energy economics. NiCad-batteries offer very good efficiency and performance data - if treated well. The fun with NiCad cells is
that they allow high energy input while charging and very
high output if required. In car racing these cells often have
more than 100 A output.
To get a good performance you should have an eye on the
charging. NiCad cells tend to remind certain states of discharging which may influence the capacity. The so called
"Memory Effect" may damage your cell if not treated correctly. Let us have some first remarks here:
- Charge your batteries just before you intend to start.
- Discharge your batteries correctly after use.
- Use a suitable charger to improve the batteries lifetime
and performance.
In detail: 12-20 cell packs are available in any hobby shop. If
you have the choice use selected or matched types.
Remove the shrink folio for better ventilation. Use silicon or
Your experience ...
... that the motor does not run
freely.
... that the motor runs free but
the helicopter seems to be slow
in response.
... that the motor and the
battery are very hot after the
flight.
... that the motor and the
battery are rather cool after the
Help:
Try 2 tooth less on the pinion.
Try 1 teeth more on the pinion.
2 tooth less on the pinion are
possible.
1 tooth more on the pinion is
possible.
TOO MUCH HEAT IS A SIGN OF POOR ENERGY
ECONOMICS. ENERGY TRANSFERRED TO HEAT WILL NOT BE
TRANSFERRED TO FLIGHT TIME AND FLIGHT
Motor type Aeromaxx 15-4 Aeromaxx 15-5 Aeromaxx 30-3 Aeromaxx30-4
Order Number 70101 70102 70103 70104
No load speed per volt 1900 1530 1280 960
Nominal speed per volt 1500* 1200* 1000* 760*
Length without shaft 45 45 57 57
Diameter in millimetre 40 40 40 40
Shaft diameter in millimetre 5 5 5 5
Weight (in gramme ) 180 180 280 280
Optimized for number of cells (helicopter) 8 bis 12 8 bis 12 12 bis 16 16 bis 20
Optimized for number of cells (airplane) 6 bis 8 8 bis 12 8 bis 12 10 bis 14
Recommended number of cells 7 10 10 12
Propellor for recommended cells 9 x 5 10 x 5 11 x 5 11 x 6
Pinions in the helicopter ECO 8 und ECO 16
Motor type cells pinions
Aeromaxx 15-4 8 18
Aeromaxx 15-4 10 16
Aeromaxx 15-4 12 14
Aeromaxx 15-5 8 19
Aeromaxx 15-5 10 17
Aeromaxx 15-5 12 16
Aeromaxx 30-3 12 16
Aeromaxx 30-3 16 14
Aeromaxx 30-4 16 15
Aeromaxx 30-4 20 13
Pinions in the helicopter ECO 8
Motor type cells pinions flight time reaction
Performance 8 12 10 good-natured
Perfomance 8 11 11 good-natured
Performance 10 10 13 acrobatic flying
Performance 10 11 12 acrobatic
flyingPerformance 12 10 14 acrobatic
flying
Sport 6 17 8 good-natured
Sport 7 13 9 lively
Sport 7 14 8 agile
Sport 8 10 10 agile
Power 7-8 12
Power 8-10 10
pinion in ECOlite
Sport 6 17 5 good-natured
Sport 7 16 6 lively
Sport 7 15 7 lively
Sport 8 14 7 agile
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