ROBBE VAYU Instruction Manual

Modellsport
www.robbe.com
V1_06/2023
INSTRUCTIONS AND USER MANUAL Version No.: 2695

2
INSTRUCTIONS AND USER MANUAL
Modellsport
GENERAL INFORMATION
• The model is designed for the components specied by us. Unless
otherwise stated, servos and other electronic components are
designed for standard supply voltage. Recommended cell count for
Lipo batteries also refers to standard Lipos voltage of 3.7V per cell.
If you use other servos, a different motor and controller, batteries, or
propellers, please make sure they t rst. In the event of deviations,
corrections and adjustments must be made by yourself.
• Before starting construction, always put the servos into neutral. To
do this, switch on the remote control and move the joysticks and
trim buttons (save the one for the throttle) to the middle position.
Connect the servos to the corresponding outputs of the receiver
and supply them with a suitable power source. Please observe the
connection diagram and the operating instructions of the remote
control system manufacturer.
• Do not leave your model in the blazing sun or in your vehicle for long
periods of time. Too high temperatures can lead to deformation/dis-
tortion of plastic parts or blistering of covering foils.
• Before the rst ight, check the wing symmetry, tail unit and fuselage.
All parts of the model should have the same spacing from the left
and right wing or tail plane to the centre of the fuselage or the same
angle.
• If necessary, rebalance the propellers if vibrations are noticeable
when the motor is running up.
• Bubble formation in the covering foils normal to a certain extent due
to temperature and humidity differences and can be easily elimina-
ted with a foil iron or hairdryer.
• For models in shell construction („full GFRP/CFRP“), burrs may occur
at the seams due to the production process. Carefully remove them
with ne sandpaper or a le.
GENERAL SAFETY INFORMATION
• Be sure to read the safety instructions carefully before operating your
model.
• Always follow the procedures and settings recommended in the
instructions.
• If you are using remote-controlled model aircraft, helicopters, cars or
ships for the rst time, we recommend that you ask an experienced
model pilot for help.
• Remote-controlled models are not toys in the usual sense and may
only be used and operated by young people under 14 years of age
under the supervision of adults.
• Their construction and operation requires technical understanding,
careful craftsmanship and safety-conscious behaviour.
• Mistakes or negligence during construction, ying or driving can result
in considerable damage to property or personal injury.
• Since the manufacturer and seller have no inuence on the proper
construction/assembly and operation of the models, these risks are
expressly pointed out and any liability is excluded.
• Propellers on aircraft and all moving parts in general pose a constant
risk of injury. Avoid touching such parts at all costs.
• Note that motors and controllers can reach high temperatures duri-
ng operation. Avoid touching such parts at all costs.
• Never stay in the danger area of rotating parts with electric motors
with connected drive battery.
• Overcharging or incorrect charging can cause the batteries to ex-
plode. Make sure the polarity is correct.
• Protect your equipment and Models from dust, dirt and moisture. Do
not expose the equipment to excessive heat, cold or vibration.
• Use only recommended chargers and charge your batteries only
up to the specied charging time. Always check your equipment for
damage and replace defects with original spare parts.
• Do not use equipment that has been damaged or got wet due to
a fall, even if it is dry again! Either have it checked by your specialist
dealer or in the Robbe Service or have it replaced. Hidden faults can
occur due to wetness or a crash, which lead to a functional failure
after a short operating time.
• Only the components and accessories recommended by us may be
used.
• Do not make any changes to the remote control which are not de-
scribed in these instructions.
SAFETY NOTE FOR MODEL OPERATION
Attention, danger of injury!
• Always keep a safe distance from your model aircraft.
• Never y over spectators, other pilots or yourself.
• Always perform ight gures in a direction away from the pilot or
spectators.
• Never endanger people or animals.
• Never y near power lines or residential areas.
• Do not operate your model near locks or public shipping.
• Do not operate your model on public roads, motorways, paths and
squares, etc., but only in approved locations.
• Do not operate the model in thunderstorms.
• Before each ight, check your remote control system for sufcient
function and range.
• After ying, remove all batteries from the model.
Do not „aim“ the transmitter antenna at the model during operation. In
this direction, the transmitter has the lowest radiation. The best position
of the antenna is to the side of the model.
Use of devices with image and/or sound recording function:
If you equip your model with a video or image recording device (e.g.
FPV cameras, action scams etc.) or the model is already equipped
with such a device at the factory, please note that you could violate
the privacy of one or more persons by using the recording function. An
overight or driving on private ground without the appropriate permissi-
on of the owner or approaching private ground can also be regarded
as an invasion of privacy. You, as the operator of the model, are solely
and fully responsible for your actions.
In particular, all applicable legal requirements must be observed,
which can be found in the roof associations or the relevant authorities.
Failure to comply can result in substantial penalties.
PREFACE
Dear model builder,
You have chosen the VAYU kit from our company. For this we would
like to thank you very much.
The VAYU is a ying wing with a wide range of use. The VAYU is deliver-
ed as a kit. The laser-cut wooden parts will be assembled and glued
with only a few steps in the plug-in box principle. Please read these
instructions carefully, even if you have already built many RC models.
We have given a lot of thought to detail solutions in order to keep the
construction effort as simple and low as possible without neglecting the
functionality.
The kit is manufactured with modern CNC technology. This gives you
the certainty that you will not experience any unpleasant surprises due
to mismatched components when building the VAYU.
Now we wish you a lot of fun building your new VAYU and especially
ying it afterwards.
PLEASE READ THIS MANUAL CAREFULLY BEFORE YOU START ASSEMBLING
THE MODEL.
FLIGHT INSTRUCTIONS
• Before the rst ight, observe the instructions in the „Safety Instruc-
tions“ section.
• When ying the model, you should choose a day with as little wind as
possible
• A large, at area without obstacles (trees, fences power lines etc.) is
suitable for the rst ights.
• Please carry out a functional test of the drive train / power set and
remote control.
• After assembling the model on the aireld, check once again that
all model components such as wing, tail units, wing mounts, engine,
linkages, etc. are rmly and properly fastened.
• For a hand start a helper should be present, who can throw the mo-
del with enough thrust into the air.
• The start usually takes place against the wind.
• Do not stall the model near the ground
• Do not initiate tight turns in the immediate vicinity of the ground.
• Check the reactions of the model to the rudder deections. If ne-
cessary, adjust after landing to increase or decrease the deections
accordingly.
• The minimum ight speed must be at an adequate safety altitude.
• Initiate the landing with sufcient speed

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INSTRUCTIONS AND USER MANUAL
Modellsport
SAFETY INSTRUCTIONS
FOR CONTROLLERS
• Observe the technical data of the controller.
• Observe the polarity of all connection cables.
• Avoid short circuits at all costs.
• Install or package the regulator so that it cannot come into contact
with grease, oil or water.
• Effective interference suppression measures on the electric motor
with, for example, interference suppression capacitors
• Ensure adequate air circulation.
• Never reach into the turning circle of the propeller during start-up
Risk of injury
Dealing with model aircraft and vehicles requires technical understan-
ding and a high level of safety awareness. Incorrect assembly, incor-
rect adjustment, improper use or the like can lead to personal injury
or damage to property. Sudden starting of connected motors can
lead to injuries due to rotating parts such as propellers. Always stay
away from these rotating parts when the power source is connected.
All drive components should be safely and securely mounted during
a function test. Use is only permitted within the scope of the technical
specication and only for RC hobby applications. Before use, check
that the speed controller is compatible with your drive motor or power
source. Never operate the speed controller (correct speed controller)
with external power supply units. Speed controllers should always be
protected from dust, moisture, vibration and other mechanical stresses.
Even splash-proof or waterproof equipment should not be permanently
exposed to moisture or moisture. High operating temperatures or poor
cooling should be avoided. The recommended temperature range
should be approximately between -5°C and +50°C. Ensure proper con-
nection and do not cause reverse polarity which would permanently
damage the speed controller. Never disconnect the device from the
motor or battery during operation. Use high-quality plug systems with
sufcient load capacity. Avoid strong bending or tensile stress on the
connecting cables. After termination of ight or driving operation,
disconnect the battery to prevent deep discharge of the battery. This
would cause permanent damage. For the BEC version of the control-
ler, check that the BEC power of the device is sufcient for the servos
used. Speed controllers should be installed as far away as possible from
other remote control components. We recommend carrying out a
range test before operation. We recommend regular checking of the
controller for function and externally visible damage. Do not continue
operating the controller if you notice any damage. The connection
cables must not be extended. This can lead to unwanted malfunctions.
Despite existing safety and protective devices of the device, damage
may occur which is not covered by warranty. The warranty also expires
if changes are made to the device.
Important information:
The receiver system is powered by the built-in BEC system of the con-
troller.
For commissioning, always move the throttle stick to the „Motor off“ po-
sition and switch on the transmitter. Only then connect the battery. To
switch off always disconnect the connection battery motor controller,
rst then turn off the transmitter. During the functional test, move the
servos of the rudders to neutral position with the remote control (stick
and trimming lever on the transmitter to the middle position). Please
make sure to leave the throttle stick in the lowest position so that the
engine does not start. For all work on to the parts of the remote control,
motor or controller, follow the instructions supplied with the units. Also
read the instructions of the battery and the charger carefully before
commissioning. Check the engine mounting bolts in the fuselage regu-
larly for tightness.
CONFORMITY
Robbe Modellsport hereby declares that this device
complies with the essential requirements and other
relevant regulations of the corresponding CE direc-
tives. The original declaration of conformity can be
found on the Internet at www.robbe.com, in the
detailed product view of the respective device de-
scription or on request. This product can be operated
in all EU countries.
WARRANTY
Our articles are equipped with the legally required 24 months warranty.
Should you wish to assert a justied warranty claim, always contact
your dealer, who is responsible for the warranty and the processing.
During this time, any functional defects that may occur, as well as ma-
nufacturing or other problems, will be rectied.
Material defects corrected by us free of charge. Further claims, e.g. for
consequential damages, are excluded.
The transport to us must be free, the return transport to you is also free.
Freight collect shipments cannot be accepted. We cannot accept
liability for transport damage and loss of your consignment. We recom-
mend appropriate insurance.
To process your warranty claims, the following requirements must be
met:
• Attach the proof of purchase (receipt) to your shipment.
• The units have been operated in accordance with the operating
instructions.
• Only recommended power sources and original robbe accessories
have been used.
• There is no moisture damage, external interference, reverse polarity,
overloading or mechanical damage.
• Attach relevant information for nding the fault or defect.
The sign of a crossed-out dustbin means that the
product is not allowed to be disposed of with normal
household waste due to certain ingredients. Dispose
of the device at your local municipal collection point
or recycling centre. This applies to all countries of the
European Union and other European countries with a
separate collection system.
DISPOSAL
INSURANCE
Ground-based models are usually covered by personal liability insu-
rance. Additional insurance or extension is required for aircraft models.
Check your insurance policy (private liability) and take out suitable
insurance if necessary.
DISCLAIMER
Robbe Modellsport cannot monitor compliance with the assembly and
operating instructions or the conditions and methods for installation,
operation, use and maintenance of the model components.There-
fore, we accept no liability for losses, damage or costs arising from or
in any way connected with incorrect use and operation.To the extent
permitted by law, the obligation to pay damages, irrespective of the
legal grounds, shall be limited directly to the invoice value of the claims
arising from the event causing the damage.
SAFETY INSTRUCTIONS FOR
RECHARGEABLE BATTERIES
• Do not immerse the battery in water or other liquids.
• Do not heat, throw into re or microwave.
• Do not short-circuit or charge with reversed polarity
• Do not expose, deform or throw the battery
• Do not solder directly on the battery
• Do not change or open the battery
• Only charge the battery with suitable chargers, never connect it
directly to a power supply unit.
• Never charge or discharge the battery or charger on a ammable
surface.
• Never leave the battery unattended during charging or discharging
processes.
• Never charge or discharge the battery in direct sunlight or near
heaters or re.
• Do not use the battery in places subject to high static discharge.
All this can cause the battery to be damaged, explode or even catch
re!
• Keep the battery away from children
• Keep leaked electrolyte away from re, as it is highly ammable and
may ignite.
• The electrolyte liquid should not get into the eyes, if it does, rinse
immediately with plenty of clear water and then see a doctor.
• The electrolyte liquid can also escape from clothes and other ob-
jects with a lot of water or washed off.
• Observe the safety instructions of the battery manufacturer and the
charger manufacturer.

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INSTRUCTIONS AND USER MANUAL
Modellsport
TECHNICAL DATA
Span 1300 mm
Length -
Weight (dry) approx. -
Flying weight approx. from 700 g
Wing Area 23,36 dm²
Airfoil 7,5 %
Wing loading from 30 – 35 g/dm²
Flight Skill Advanced
C.G. 52 mm
from the leading edge
Elevator yes
Rudder no
Ailerons yes
Flaps no
Motor no
No. Accessories needed LF:
KIT
Battery 9788328 1x 2S Lipo 1000mah „SLIM“ -
Servo AILE + ELE 9123 2x Robbe FS 166 BB MG DIGITAL -
Adhesives 5019 SPEED Cyanoacrylate Adhesive Glue Set 3-piece -
Epoxy resin 50601 5min ro-POXY 200g Resin adhesive -
Other -1x Wood glue -
Other -1x Covering material -
TX -with delta mixer -
RX - min. 2 channels -
Declaration: LF: Box content -: not included X: included
BOX CONTENT - NEEDED ACCESSORIES
The assembly of the VAYU can be done quickly and easily thanks to CNC-lasered and thus accurately tting com-
ponents. With the help of these building instructions, the VAYU can be built without any problems even without a
building plan, the construction is quick and can be realized even for inexperienced model builders in a few eve-
nings. Take some time to study these building instructions carefully before you start assembling.
Assembly is done on a template made of poplar plywood using the plug-in box principle. The design allows the
wing, including the bottom and top planking and the end rails, to be assembled in one go. This makes wing warping
almost impossible! The VAYU has transport-friendly dimensions, a Quick Connect wing lock with Easy Power ON/OFF
function, an integrated hook and a ballasting option (optional ballast box # 26950002).
GENERAL INFORMATION

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INSTRUCTIONS AND USER MANUAL
Modellsport
INTRODUCTION
Kit contents
1 Right slipway / ribs Poplar 3 mm
2Right ribs Poplar 3 mm
3 Left slipway / ribs Poplar 3 mm
4 Left ribs Poplar 3 mm
5Ribs 2a /2b Plywood 3 mm
6Servo mount etc. Plywood mm
7 Edging strip bottom (Sandwich) Balsa 2 mm
8 Edging strip top (Sandwich) Balsa 6 mm
9Rudder (Sandwich) Balsa 3 mm
10 Intro-Leading edge Balsa 2 mm
11 Leading edge / Rudder / Edging strip Plywood 1 mm
12 Flap stays Balsa 5 mm
13 Planking D-Box right Plywood 0,4 mm
14 Planking aps right Plywood 0,4 mm
15 Planking D-Box left Plywood 0,4 mm
16 Planking aps left Plywood 0,4 mm
17 Planking middle wing / doubling Plywood 0,4 mm
VMR GFK Center rib GFRP
L1 CFRP rectangle prole 0,6 mm x 5 mm
(650 mm)
4 pcs, CFRP
L2 CFRP rectangle prole 0,6 mm x 5 mm
(120 mm)
4 pcs, CFRP
L3 Wooden prole bar5 x 10 mm (600 mm) 2 pcs, Lime
Bag of small electric parts:
E1 Servo cable 0,14 m² 750 mm
E2 Heat shrink tube 1,6 / 0,8 mm 150 mm
E3 Heat shrink tube 2,4 / 1,2 mm 70 mm
E4 Pin bar, 2 Pin, 17 mm 2 pieces
E5 Socket, 4 Pin 2 pieces
E6 XT30 Plug / Socket 1 pair
Bag of small parts:
J1 Spring steel 1,2 mm (60 mm) ~ Wing lock Steel
J2 Spring steel 0,8 mm (30 mm) ~ Hook Steel
J3 Stainless Steel Screw M3 x 10 / Clip / Locknut Steel
U1 Stainless Steel Pipe 10 x 0,3 mm (95 mm) 2 pcs, Steel
U2 Spring steel 0,6 mm (100 mm) 2 pcs, Steel
U3 Carbon Rudder Horn (milled part) 4 pcs, Carbon
U4 Ball joint M2 2pcs,Injection
moulding
Threaded rod M2 Stainless steel (50 mm) 2 pcs, Steel
Stainless Steel Screw M2 x 10 / Clip / Locknut 2 pcs, Steel
Clevis 2 pcs Steel
U5 Kevlar cord (1 Meter) Kevlar
U6 Carbon round bar 3 mm (80 mm) Carbon
U7 Magnete 6 x 3 mm Magnet
U8 Carbon rectangle prole 10 x 2 mm (200
mm)
Carbon
Y1 Rudder mount (milled part) Poplar
Y2 Carbon tube wound 6/4 (70 mm) Carbon
Y3 Carbon round bar 4 mm (100 mm) Carbon
Recommended rc-equipment:
• Transmitter with programmable delta mixer and dual rate
• Micro receiver with normal range, maximum front size 25 x 9 mm
• Sub-Micro Servos, Width 9mm, ROBBE FS 166 HV # 9123
• Receiver battery, 2S Lipo 1000mah „SLIM“ 20x12x105mm # 9788328
Required tools:
• Building board, e.g. blockboard 30 x 80 cm, taped with parcel tape
• Sharp cutter knife
• Sandpaper grit 100 and 240
• Grinding lath, e.g. aluminum angle prole 50 x 30 mm
• Superglue (CA-glue) „Speed“ (low and middle viscosity) # 5062 /
5063
• Activatorspray # 5017
• Glue holder # 50610
• PVA glue (White glue)
• Epoxy adhesive, e.g. UHU Endfest Plus
• Clamps, weights for weighting
• Masking tape
• Soldering iron, solder
• Hot air gun (or similar for the heat shrink tubing)
• Key les (at, square 3mm)
• Pliers
• Right Angle
• Torx 6, Torx 10
• Rudder deection indicator # 50611
•
Required materials:
• Film for covering, approx. 140 cm
• Lead granules nickel plated, ball diameter 1 mm to 3 mm, approx.
100 g *
• Rolled lead, approx. 100 g *
(* not required when using the accessories listed below)
Accessories:
26950002 Ballast box for VAYU including ballast weights
26950001 Cast trim weight for VAYU (for fuselage nose)

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INSTRUCTIONS AND USER MANUAL
Modellsport
3 PREPARATORY WORK
KIT
CAUTION! Carry out this work with care, as it is essential for safe operation at a later date. Incorrect installation
can lead to personal injury and damage to property.
Particularly on the plywood boards, traces of powder result during laser cutting. These are a bit unlovely but can
easily be removed for the most part by sanding the surface. To do this, leave all components in the boards.
You should not regrind the cut edges so that the accuracy of t is maintained. Instead, you can use a soft brush
(e.g. toothbrush) to remove the burn-off at the cut edges.
3.1 REMOVING TRACES OF POWDER
You will need a sheet of 180 or 240 grit sandpaper and a
rectangular squared timber, which should be about 200 to
250 mm long. Instead of the squared timber, you can also
use a right-angled L-shaped aluminum prole. The leg length
should be e.g. 30 mm to 50 mm.
You will need the slider bar later for sanding the contour of
the leading edge strip as well as for sanding over the wings
before applying the covering.
Glue the sandpaper to the squared lumber with PVA glue
(white glue) and press it onto a at surface until it is com-
pletely dry. After the PVA glue has dried, cut off any protru-
ding sandpaper with a sharp cutter. If you use an aluminum
prole, you can stick the sandpaper on with double-sided
adhesive tape; this makes it easy to change the sandpaper.
We recommend the use of an aluminum prole.
3.2 SLIDER BAR
You will need the sanding gauge later to sand the ap stays
on the two wing halves.
Separate the four individual parts (2 x T1, 2 x T2) of the san-
ding gauge from the plywood board with the cutter and
plaster them.
Now plug the components together as shown on the right
and glue them with superglue.
The sanding gauge is designed so that you can slide the
sandpaper on one side under the other contact surface.
Stick the sandpaper onto this side with double-sided adhe-
sive tape. Cut off any protruding sandpaper with a sharp
cutter.
3.3 SANDING GAUGE
Use a cutter knife to separate the four components S1 from
the plywood board and plaster them. Separate the eight
components S2 from the poplar plywood boards as well.
Remove the four CFRP strips L2 from the strip bundle. Grind
both sides of the strips well.
Take the CFRP plug-in rod from the plastic bag.
3.4 PLUG-IN BOXES

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INSTRUCTIONS AND USER MANUAL
Modellsport
CAUTION! Carry out this work with care, as it is essential for safe operation at a later date. Incorrect installation
can lead to personal injury and damage to property.
3 PREPARATORY WORK
KIT
Apply a layer of adhesive tape to one side of the CFRP
connecting rod. This prevents that the connection sits too
tight later.
Now take the two parts S1, the CFRP plug-in rod and two
CFRP strips L2 and assemble these parts without gluing to
form a plug-in box.
Hold this package together with your ngers. Now test
whether the 8 components S2 can be pushed over the con-
nector box without any problems. If this is only possible with
a lot of strength, you can minimally widen the recess with a
very ne le. The S2 components should sit rmly on the junc-
tion box and must not have any space to move.
Now take two S1 components and place them ush on top of each other. Apply a thin layer of epoxy resin adhe-
sive to the two long sides. Remove any excess adhesive. Make sure that no adhesive gets between the componen-
ts.
Now place the CFRP connecting rod between the two compo-
nents S1.
Place a CFRP strip L2 on the top and bottom of this package.
Now slide four components S2 over the connector box and x
the package with clamps.
The components S2 will not be glued!
After the adhesive has cured, remove the clamps and the S2
components from the connector box.
Pull the CFRP connector rod out of the connector box.
Check with rib 2 whether the connector box can be pushed through the rib without any problems. You can careful-
ly remove any adhesive that has swelled up.
Now make the second connection box accordingly. In principle, you can also make both connector boxes at the
same time, but we recommend doing this one after the other. If the connector box is very difcult to detach from
the connector rod, it is easier to work on it.
The two four-pin sockets and the pin tracks are used to connect the left servo and the battery to the right wing half.
The receiver is located in the right wing half. When the wing halves are plugged together, the receiver is supplied
with power through the contact in the center rib.
You need to wire a left and a right socket.
3.5 WIRING
Cut off the overhang of the CFRP strips L2 and sand one side of
the connector box at at the opening for the connector. You
do not need to grind the sides.
Note: To reduce the risk that the junction box and CFRP jumper rod stick together, apply a thin layer of
Vaseline to the jumper rod before carrying out the following steps. However, make sure that no
Vaseline gets onto the glued areas. Fixing the components is also possible with hot glue.

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INSTRUCTIONS AND USER MANUAL
Modellsport
Cut an approx. 10 cm long piece of the servo cable from a servo. Solder this servo cable with the plug onto the so-
cket. Before you solder the cable, thread three pieces of heat shrink tubing over the cables. For the ground (black)
and the signal cable (white and orange respectively) the thin heat shrink tubing is provided. For the positive (red)
wire, use the thicker heat shrink tubing. The two plus pins must be connected to each other. Take a close look at
the socket for this, the solder contacts can be easily bent in one direction. Bend the two plus contacts minimally
to each other so that you can solder the plus cable more easily to both contacts together. After all contacts have
been soldered, the individual pins can be secured with hot glue to prevent them from being accidentally pushed
out.
3.5.1 RIGHT SOCKET
3 PREPARATORY WORK
KIT
If you solder the left socket, you must make sure that the assignment of the contacts is corresponding to the right
side. In the two graphics the corners with the ground wire are marked with a star for this reason.
For the servo, solder on an approx. 26 cm long three-core cable. For the battery use the enclosed servo cable and
remove the orange cable. It must also be approx. 26 cm long. The soldered joints are insulated with heat shrink tu-
bing. For the two black cables, a piece of the thicker heat shrink tubing is used together.
3.5.2 LEFT SOCKET
3.6 ROOT RIB
Note: The root ribs of the left and right sides are different.
The buildup is different and must be performed with the correct side in any case.

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INSTRUCTIONS AND USER MANUAL
Modellsport
3 PREPARATORY WORK
KIT
Lay out the right root rib 1R, the socket for the right side (with plug), a magnet and the cover of the magnet. Check
that everything can be mounted in the root rib.
Roughly grind the side of the magnet and degrease it.
3.6.1 RIGHT ROOT RIB
Glue the bushing and the magnet into the rib with epoxy glue. To do this, apply a thin layer of glue to the gluing
surface in the rib and to the sides of the bushing and magnet. Press the bushing and magnet into the rib from the
inside of the wing. Note which orientation the bushing is in the rib, e.g., ground bottom to back. The bushing and
magnet must be ush with the outside of the rib. Carefully wipe off any glue that has oozed out. Make sure that no
glue gets into the bushing. Tape the outside with a strip of adhesive tape. Now lay the rib at on the building board
and press the magnet, the bushing and the rib itself rmly onto the building board so that everything is really ush.
For the bushing, be careful not to get it stuck at an angle by the cable. Coat the cover of the magnet with epoxy
glue as well and place the cover over the magnet. Use a 3 mm pin (e.g. drill) to align the hole of the rib and the
cover. Make sure that the pin does not stick. To do this, apply a thin layer of Vaseline to the pin. Make sure that the
cover lies at on the rib and that there is no gap.
For the left root rib, proceed accordingly to the right side.
Make sure that you mount everything from the inside of the wing again. The cable to the battery and the servo is
soldered to the left socket. When gluing in the socket, be sure to use the same orientation as on the right side. E.g.
ground down to the rear.
Before gluing in the magnet, determine the orientation in which it is attracted by the magnet of the right root rib.
Glue the magnet in this orientation. The two root ribs must attract each other and must not repel each other.
3.6.2 LEFT ROOT RIBS
Lay out the left and right rib 2 and the corresponding dou-
bler. Glue the doubler to the inside of rib 2 using white glue.
To align the parts to each other, you can use the steel tube
of the ballast chamber and a 3 mm pin.
3.7 RIB DOUBLING RIB 2
Note: The rib 2 of the left and right side differ.
The build-up is different and must be performed with the correct side in any case.

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INSTRUCTIONS AND USER MANUAL
Modellsport
Glue a rib doubler to each of the ribs 7 and 8. These doub-
lers are needed to glue the lower planking to the servo. The
doubler is glued to the side of the rib facing away from the
servo. The doubler of rib 7 is on the side of rib 6 and the dou-
bler of rib 8 is on the side of rib 9.
3.8 RIB DOUBLING R7 / R8
Press the two parts of the Intro leading edge together. This t is designed to be very tight so that the contour of the
leading edge becomes correct. If in doubt, take a at hard object to press the parts together.
Make sure that both parts have been pressed completely into each other and are not slanted or twisted. Tape one
side with a strip of adhesive tape and glue the two parts together with thin super glue.
The intro leading edge of the second wing is assembled accordingly.
3.9 INTRO LEADING EDGE
Assemble the two spar bars from the two parts respectively.
Fix the two parts at the joint with a strip of adhesive lm and
glue them together with thin super glue.
3.10 SPAR BAR
The ballast chamber is installed on the left and right directly in front of the spar in the wing. Even if you do not want
to use ballast weights, the two ballast chambers should be installed. A later upgrade is not possible.
By inserting the ballast pieces, the center of gravity is shifted minimally forward, which has proven to be ideal in
ight tests.
The ballast chamber is locked with a spring wire. Thus, the weights can be loaded and removed again very easily.
3.11 BALLAST CHAMBER – LOCKING DEVICE
For the locking spring, two 0.6 mm wires are included in the kit.
3 PREPARATORY WORK
KIT
Note: You will need a left and a right spring for the two ballast chambers.

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INSTRUCTIONS AND USER MANUAL
Modellsport
Process the wire in the following order:
• Bend a tab at the beginning of the wire.
• Approx. 5mm behind the tab you have to bend a 90° angle.
• Insert the wire into the slot of the stainless steel tube and take off the length of the slot (approx. 10mm).
• Bend the wire 90° in the same level in the opposite direction to the rst angle.
• 45mm further, a 90° angle will be bent, which should protrude approx. 45° out of the plane. This bend direction
depends on the side. The picture shows the spring for the right side. For the left side you lay the wire left/right
swap ped on the building board and then bend accordingly.
If you are unsure, you can also make this angle later, when the wing is built up enough to insert the wire.
• After 16-17mm follows a 90° angle downwards.
• You can shorten the last wire section to approx. 10 mm.
Grease a brass ballast piece with Vaseline and push it into
the tube from the front. Insert two more ballast pieces into
the tube. Carefully push the three ballast pieces backwards
until you can insert the wire into the locking slot at the front.
Here, the closing plug should be pushed outwards again
minimally. Press slightly against the stopper so that the ballast
pieces are rmly seated. They must not slip back and forth.
Remove the ballast pieces carefully without moving the plug
and clean them.
If you have not ordered the optional ballast set, use a piece
of wood 90mm long instead of the three brass ballast pieces.
3.12 BALLAST CHAMBER – CLOSING PLUG
3 PREPARATORY WORK
KIT
Grind the ballast chamber in the rear area on the inside and degrease this area.
Insert the closing plug with epoxy glue and push the wooden component into the tube so that it sits about 1 mm
inside.

12
INSTRUCTIONS AND USER MANUAL
Modellsport
Tape the building board with parcel tape so that you can easily remove the slipway from the building board later.
3.13 SLIPWAY
3 PREPARATORY WORK
KIT
You can attach the slipway to the building board using several screws, staples or thin double-sided adhesive tape.
Make sure that the slipway is completely at.
The slipway is attached to the edge of the building board. This makes it easier for you later during some construction
steps.
4 WING ASSEMBLY
KIT
Prepare the ribs 1 to 4, a ballast tube, a connector box,
the three parts of the front pressure bar, the two parts for
fastening the wing ledger and the two parts of the rear
pressure bar that have not yet been glued in place.
A few of the next ribs and the spar bar are helpful for ali-
gning the rst four ribs.
4.1 RIB 1 TO 4
Carefully separate the ribs of one half of the wing from the plywood boards with a cutter knife and sand the webs
at with sandpaper. Sort the ribs in order.
Note: There is a left and a right slipway. You do not need to use the slipway again after nishing the rst
half of the wing.
Note: Only glue parts together when it is described in the manual. Otherwise, you may not be able to
build the model correctly.
The following description refers primarily to the construction of the right half of the wing. Differences that must be
taken into account when constructing the left half of the wing are described at the end of the chapter.

13
INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
Now the rear pressure bar between R1 and R2 can be
threaded on with an M3 screw. The M3 screw can be se-
cured with a nut. The screw head should be at R1 so that
the screw can be removed later without any problems.
Insert the assembled parts and ribs 3 and 4 into the slip-
way.
Push the connector box up to the rib 4.
Push the ballast tube from the wing tip into the ribs 4 to 2.
The tube can only be pushed into the ribs in this direction,
as the rounding of the front pressure bar has been adju-
sted to the inside of the ballast tube.
Push the plug-in box through rib 1. Thread the three parts
of the front pressure bar onto the plug-in box. The roun-
ding points to the front, the lettering can be read correct-
ly. The parts are asymmetrical and should be ush with
the rib at the top and bottom.
Now rib 2 is pushed on. Leave a little more space.
Check if the surface ledger ts into the fastening and re-
work it if necessary. The wing ledger is glued in at a much
later stage so that it is easier and more accurate to work
on the planking etc. on rib 1.
Insert the attachment of the wing ledger in rib 1. On the right wing, the cutout for the wing ledger is at the front, with
the rounding of the „P“ pointing upwards. The labeling must be read the right way around. Before gluing, be sure to
test whether the ledger ts into the cutout without any problems. Now you can still slightly rework.

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INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
Temporarily press additional ribs into the slipway and place the spar bar on
the ribs. Now you can push the connector box inward until it rests against
the spar bar.
Check that the rst four ribs have been pressed completely into the slipway
and are exactly vertical. The rear foot of the rib must lie at on the building
board. It is important that rib 1 is absolutely vertical, otherwise there will be
a gap to the GRP center rib. To check the angle of rib 1, place a piece
of scrap wood next to the slipway so that you have a sufciently large
contact surface.
You can now x the ribs 1 to 4 on the feet to the slipway with a drop of medium-viscosity super glue.
Check again that the rst four ribs are really seated exactly. Now you can glue the connector box, the two pressu-
re bars and the holder of the wing lock with thin super glue. Press the ribs 1 and 2 slightly together. The ballast tube
should not be glued yet.
Remove the ballast tube, the spar bar and the temporary ribs again.
Divide the enclosed Kevlar thread approximately into two pieces of equal length.
Glue the beginning of the Kevlar thread with superglue to the connector box at rib 4. Wait until the superglue is dry.
Wrap the plug box between ribs 3 and 4 under tension. Make sure that the thread is always taut. Glue the end of
the thread under tension onto the connector box. Now you can glue on the complete Kevlar thread with super
glue.
Grease the spring wire for locking the ballast tube with
Vaseline and thread it through the ribs. Clip the wire into
the small holes.
Roughen the ballast tube thoroughly in the area of
the ribs and degrease it at these points. Push the tube
through the ribs from the outside with the slot in the di-
rection of rib 2. The slot in the tube must be at rib 2. The
ballast tube touches the front pressure bar and ends with
rib 2.
The tube is not glued until the bottom planking has been
tted, so that any adhesive that runs down does not re-
ach the underside of the ribs.
4.2 INSERTING THE BALLAST TUBE
Place the ribs 5 to 16 in the slipway. The servo frame is placed between ribs 7 and 8.
4.3 RIBS 5 - 19 AND LOWER FRONT PLANKING
Note: The spar bar and the provisionally inserted ribs must not yet be glued in place. They are used only for
the exact alignment of the rst four ribs.

15
INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
The servo frame consists of 4 parts. First, insert only the two
lower parts Svu and Shu into the ribs. You can glue in the
two top doublers later. The side with the drill hole for the
servo mounting screw faces the root rib, the slanted side
of Shu faces the wing tip.
Ribs 17 and 18 must be adapted to rib 19. To do this, insert the two ribs 17 and 18 into the slipway and t rib 19 from
above. Mark on ribs 17 and 18 at which angle the recess for the slanted rib must be adjusted. Edit the two ribs
accordingly. Make sure that rib 19 can be inserted completely
into the slipway and that the rib is not bent. It must also be ex-
actly vertical.
Temporarily insert the spar bar into the ribs. This ensures that all ribs are vertical. Fix each rib in the slipway with a
drop of medium-viscosity super glue. Ribs 18 and 19 must be checked for vertical stand with a suitable right angle.
Remove the spar bar again.
Slide the bottom planking into the ribs. The planking is
laterally aligned with rib 2.
Grind the CFRP spar on both sides and remove dust. Slide
it between the ribs and the planking from the outside.
Check whether the CFRP spar is seated correctly every-
where.
Place the spar bar on the ribs and press it down to the
CFRP spar at all points. The top of the spar bar must be
ush with the ribs.
To make it easier to check whether rib 19 is completely
inserted into the slipway, you can insert it into the slipway
without the two ribs 17 and 18 and mark the intersection of
the slipway and the foot with a sharp pencil.
Insert the glued intro nose strip into the ribs. Check that the
front edge of the intronase strip is ush with all ribs. Rib 19
must also t neatly, otherwise check again whether rib 19
is seated exactly. The intro leading edge is not glued yet.
Note: The servo frame must now be inserted between ribs 7 and 8 at the latest.

16
INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
Check carefully that the bottom planking is pushed
all the way to the back in all places. If everything ts
exactly, you can start gluing. Use thin super glue for this
purpose.
Fix the lower planking to the spar in a few places so that
the planking can no longer slip.
Now glue the planking to the ribs. To do this, press the
planking to the rib with a strip that spans at least the
two adjacent rib bays. Glue this rib to the planking. Wait
until the superglue has dried. Glue all the ribs to the
planking.
Now glue the intronase bar and the spar bar to the ribs.
Place the 2mm balsa leading edge on the lower plan-
king and look at the prole shape on the balsa leading
edge from the side and carefully sand a chamfer on
the front edge of the balsa leading edge so that it
follows the prole of the rib exactly and there is no gap
between the lower planking and the balsa leading
edge. Be sure not to sand the trailing edge in any case,
or you may end up with wavy planking. If you are un-
sure, it is better to sand less, the gap is very minimal, it is
sufcient to break the front edge.
To glue the balsa leading edge, press it against rib 2
and the lower planking and glue the leading edge at
this point. Make sure that the leading edge always rests
on the planking. Glue the balsa leading edge rib by rib
to the outside of the wing.
4.4 BALSA LEADING EDGE
Pull the ballast tube approx. 5 mm in the direction of the
wing tip and spread epoxy adhesive around the tube
on the outside of the ribs, turning it slightly as you do so.
Turn the spring wire latch away and push the tube up to
the stop on the front pressure bar. Rotate the tube here
so that the adhesive is distributed as well as possible
between the tube and the ribs.
4.5 BONDING THE BALLAST PIPE
The CFRP spar is bonded to the planking from behind.
Glue the servo frame to ribs 7 and 8. Now you can glue the two remaining parts of the servo frame, Svo and Sho, to
the servo frame with white glue. Wipe off any glue that has swelled out, otherwise the servo cannot be mounted.

17
INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
Now also apply glue to the other side of the ribs and
turn the tube a little more so that the glue is well distri-
buted.
Now align the tube so that the wire comes to rest in the
slot of the ballast tube. Rotate the tube until the wire
touches the top of the slot and then minimally back
again.
If glue has gotten on the top of the ribs, wipe it off well.
Slide the lower rear planking into the ribs. The rear end
of the planking must end with the end of the rib feet
and is laterally aligned with the front part of rib 1.
When everything is exactly aligned, the planking can
be glued in place from above using superglue.
The rear end of rib 1 is aligned with the planking and
glued in place.
4.6 REAR BOTTOM PLANKING
Place the front ap bar on the wing and align it with the
front edge of the lower planking. The ap bar cannot
yet be pressed down toward the planking. To do this,
the recesses must be adjusted to the orientation of the
ribs.
4.7 FLAP BAR
Mark or note the angle at which the recess must be adjusted. Note, however, that after turning the ap bar over for
machining, the orientation remains correct.
You can make the adjustment with a ne le. A 3 mm square le is very suitable for this purpose.

18
INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
Insert the front ap bar and align it exactly with the front
edge of the lower planking. Check whether the ap bar
has been pressed down to the planking everywhere.
Glue the front ap bar with thin super glue. Allow the
superglue to dry well before you continue working.
Edit the recesses of the rear ap bar accordingly and insert the rear ap bar with some distance to the front one.
You can use a remnant piece of the planking to get an even distance. This spacing will make it easier to separate
the ailerons later. Again, check that the ap stay rests on the lower planking and glue it in place.
Cut off the upper part of the two ap bars with a sharp
knife along the lasered line.
For protection, tape the ribs behind the leading edge
and in front of and behind the spar bars with masking
tape.
Sand the balsa leading edge to match the ribs. Use
the sanding block for this purpose. Make sure that you
always cover several rib elds with the sanding block so
that you do not grind a wave into the leading edge.
4.8 GRINDING THE TOP OF THE WING
Grind the two ap bars down to the height of the ribs. Use the sanding lath here as well. When sanding, make sure
that you do not sand away the stop of the upper planking on the ribs. For this reason, only sand on the side facing
the end strip.
Use a ne at le to grind a slight bevel on the inner
edge of the servo frame so that you will not have any
problems later when inserting the servo.

19
INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
Now you can glue the counter bearing of the rudder le-
ver to the lower planking. To do this, mount the ball head
between the two rudder levers. The ball head has a width
of 5 mm. The rudder lever is mounted on the side of rib
8 towards rib 7. You can easily check this with the upper
planking. So the sequence is as follows: Rib 8 - rudder
lever - R7a - S7b - rudder lever - S7b. Check this with the
assembled rudder lever before gluing the parts on. When
gluing, it is recommended to use a CFRP remnant as a
spacer. The rudder lever is glued in place only after the
rudders have been covered.
Now, starting on the side of rib 8, place the rst coun-
ter bearing piece on the planking and align it with the
spacer. Remove the spacer without moving the counter
bearing piece and glue it to the lower planking with super
glue. Proceed accordingly with the other two parts (see
above for sequence).
4.9 RUDDER LEVER COUNTER BEARING
Now glue the rear upper planking with white glue. Ali-
gn the planking ush with the front ap bar and the two
slots for the rudder levers. Weight the planking with at
weights. You should not get any distortion or waves in the
rudder.
Test whether the rudder lever ts into the recess and, if
necessary, work after.
4.10 REAR UPPER PLANKING
IIn the area of the junction box, there is still a gap between
the CFRP spar and the junction box. This space is lled with
balsa remnants.
Fit the four remnants and glue them into the clearance with
epoxy resin.
You can adjust the two upper ller pieces to the height of
the support of the CFRP spar with a le.
Place the CFRP spar, which has already been ground on
both sides, on top of the spar bar. And check whether it is
deep enough over the entire length. You may have to ca-
refully regrind the tie bar, the CFRP tie bar is not ground. If
the CKF spar is not deep enough, this can lead to an edge
on the upper planking.
Glue the CFRP spar to the spar bar with epoxy adhesive.
4.11 FINISH SPAR BAR

20
INSTRUCTIONS AND USER MANUAL
Modellsport
4 WING ASSEMBLY
KIT
The cable from the battery connector to the 4-pin socket
is only routed on the left half of the wing.
Thread the cable for the battery connection through the
spar bar and forward again to rib 2 in the front D-box
area. The cable should be just long enough so that you
can still easily grasp the connector in front of rib 2. The
cable should not be unnecessarily long, as it is pushed into
the D-box area together with the battery.
Solder the XT30 connector onto the cable.
Make sure that the polarity is correct. For insulation you
can use the enclosed heat shrink tubing. When using the
recommended Wellpower Ultima 1000mAh 2S Lipo battery
(#9788328), the XT30 is not required as this battery alrea-
dy has a JR/Uni connector. A standard JR/UNI extension
cable may be required.
4.12 BATTERY CABLE
Check whether the ballast tube is properly glued and clo-
sed and whether the torsion spring for locking the ballast
tube is correctly seated. The cable to the battery must be
routed on the left half of the wing. You cannot make any
changes here later.
The front upper planking is glued on with white glue.
Align the planking with rib 1 and the spar and push the
planking up to the step in the ribs. The exact alignment
of the planking is important for the later assembly of the
middle planking.
Secure the planking in some places of the spar with mas-
king tape.
Coat the ribs, spar and balsa leading edge with white
glue and place the planking correctly positioned on.
4.13 FRONT UPPER PLANKING
Place the three upper middle planks on the wing. Adjust the planking to the space between the front and rear
planking. There should be no gap between the planking, but the planking must not be under tension either, other-
wise it will bow upwards. The grain direction of the outer planking is in the direction of ight.
Check the ribs to see if there is any glue that may have swollen out, which could be the reason why the planking
does not t neatly there.
4.14 UPPER MIDDLE PLANKING
Fix the planking with masking tape.
Make sure that you do not pull any waves into the planking with the masking tape. The planking must rest on all ribs.
Apply weights to the surface of the planking.