Building instructions
Kit© Copyright by MULTIPLEX 2007 Vers. 1.0 engl.

# 21 4222

1

Safety notes
Before every flight check that the motor and propeller are in place and secure - especially after transporting the model, andafter hard landings and crashes. Check also that the wing is correctly located and firmly secured on the fuselage before
each flight.
Don’t plug in the battery until you have switched on the transmitter, and you are sure that the motor control on thetransmitter is set to “OFF”.
When the model is switched on, ready to fly, take care not to touch the propeller. Keep well clear of the propeller disc too,and ask spectators to stay back.
Allow the motor to cool down after each flight. You can check this by carefully touching the motor case with your finger. The
temperature is correct when you can hold your finger on the case without any problem. On hot days this may take up to 15
minutes.
Please keep in mind at all times: don’t fly towards people or animals.

This model only was possible with the contribution of
Won Ho Kang, idea
Klaus Michler, design, manual
Markus Weinsch, construction
Bernhard Dollrieß, data
Thomas Keck, test models
Roland Hock, artworkan the Himax team, Impeller
Thanks to all for this beautiful model.

2# 21 4222
Examine your kit carefully!
MULTIPLEX model kits are subject to constant quality checks throughout the production process, and we sincerely hope that you arecompletely satisfied with the contents of your kit. However, we would ask you to check all the parts (referring to the Parts List) before
you start construction, as we cannot exchange components which you have already worked on. If you find any part is not
acceptable for any reason, please take the kit back to your model shop in the first instance, as he will be able to advise you. Afterchecking, he will send the component or the kit to our Quality Control department. We can only process guarantee claims if thepurchase receipt and a brief description of the fault are supplied.
We are constantly working on improving our models, and for this reason we must reserve the right to change the kit contents interms of shape or dimensions of parts, technology, materials and fittings, without prior notification. Please understand that wecannot entertain claims against us if the kit contents do not agree in every respect with the instructions and the illustrations.
Caution!
Radio-controlled models, and especially model aircraft, are by no means playthings. Building and operating them safely
requires a certain level of technical competence and manual skill, together with discipline and a responsible attitude at theflying field. Errors and carelessness in building and flying the model can result in serious personal injury and damage toproperty. Since we, as manufacturers, have no control over the construction, maintenance and operation of our products, weare obliged to take this opportunity to point out these hazards and to emphasise your personal responsibility.
Additional items required:e.g. MULTIPLEX Micro IPD receiver
alternatively
or MULTIPLEX RX-7 SYNTH DS IPD receiver
MULTIPLEX Nano-S servo
Servo extension lead

35 MHz, A-band
40 MHz35 MHz, A-band
2 x required for ailerons
1 x required for elevator3 x 30 cm required for aileronservos and speed controller
1 x 60 cm required for elevator servo

Flight battery (minimum load capacity approx. 36 A):
MULTIPLEX flight pack, e.g. LiBatt 3/1-2500 mAh (load capacity approx. 45 A)
or MULTIPLEX flight pack, e.g. LiBatt 3/1-3200 mAh (load capacity approx. 64 A)

Order No. 5 5971
Order No. 5 5972
Order No. 5 5885
Order No. 6 5120
Order No. 8 5031
Order No. 8 5032
Order No. 15 7191
Order No. 15 7136

Adhesive: cyano-acrylate
Use medium and high-viscosity cyano-acrylate glue (”cyano” - not styrofoam cyano) for this model. Epoxy adhesives produce what
initially appears to be a sound joint, but the bond is only superficial, and the hard resin breaks away from the parts under load.
Hot-melt glue (from a glue gun) is an excellent alternative adhesive, especially for servo mounting.
Tools:
Scissors, balsa knife, combination pliers, long pointed-nose pliers, slot-head / cross-point screwdrivers (for the servo output arm
screws).
Specification:
Wingspan
Overall fuselage length
All-up weight, min.
Wing area
Wing loading (FAI) min.
RC functions

850 mm1170 mm
750 - 880 g
26 dm²29 g / dm²
Elevator, ailerons and throttle

Important noteThis model is not made of styrofoam™, and it is not possible to glue the material using white glue or epoxy. Please be sure
to use cyano-acrylate glue exclusively, preferably in conjunction with cyano activator (”kicker”). We recommend medium or
high-viscosity (thick) cyano. This is the procedure with Elapor®: spray cyano activator on one face of the joint; allow it to airdry for around two minutes until the surface appears to be ”dry”, then apply cyano adhesive to the other face. Join the parts,
and immediately position them accurately.

Please take care when handling cyano-acrylate adhesives. These materials harden in seconds, so don’t get them on
your fingers or other parts of the body.
We strongly recommend the use of goggles to protect your eyes.
Keep the adhesive out of the reach of children!

31. Before assembling the model:
Please check the contents of your kit before you start construction.
You will find Figs. 01 + 02 and the Parts List helpful here.
2. Right / left fuselage shells
The moulding process leaves bridging lugs at the front of thefuselage shells 4 + 5, which should now be removed using a
sharp balsa knife.
Fig. 03
Examine the air intakes, and remove any rough edges from thelips using a very sharp knife. If this leaves areas of a different
colour, touch them in with a soft pencil.
Right-hand fuselage shell
3. Gluing the nose section to the fuselage shell
Trial-fit the fuselage nose 8 and the right-hand fuselage shell 5,then glue the parts together using cyano. Take care to line theparts up accurately.
Fig. 04
4. Installing the fuselage stiffener
Glue the GRP rod 41 in the fuselage shell using cyano. Glue therod over its full length, but don’t apply so much cyano that it isforced out of the joint.
Fig. 05
5. Glue the canopy latch catch 22 in the fuselage nose section
8.
Fig. 06
6. Installing the elevator servo
The elevator servo can be glued in its recess using two drops of
cyano or hot-melt glue. Be sparing with the adhesive, otherwise
it may be difficult to remove the servo again if it should require
repair at any time. Too much adhesive can also penetrate theservo case, with the danger of jamming the gearbox.
Deploy the servo lead in the channel provided. If you are using
an extension lead with a plug-in connection, cut a small recessin the fuselage for the connectors. If you have soldering facilities,
it is always preferable to solder the connections.
Secure the loose cable with adhesive tape so that it does not getin the way during the following procedures.
Fig. 07
7. Trim ballast
If you use the recommended components, you will need to glue
the two ballast weights 34 in the space provided at the tail end of
the fuselage. If lighter batteries become available in the future,
you may be able to take the weights out again; you can remove
one ball for each 20 g saved at the battery compartment position.
Fig. 08
8. Aileron servo lead
Glue the extension lead to the inside of the fuselage, with thesocket flush with the outside surface, so that the aileron servo
lead can be plugged in later when the wings are fitted.
Fig. 09
Left-hand fuselage shell
9. Gluing the nose section to the fuselage shell
Trial-fit the fuselage nose 7 and the right-hand fuselage shell 4,then glue the parts together using cyano. Take care to line theparts up accurately.
Fig. 10
10. Installing the fuselage stiffener
Glue the GRP rod 41 in the fuselage shell using cyano. Glue therod over its full length, but don’t apply so much cyano that it isforced out of the joint.
Fig. 11

4

Glue the stiffener 41 to the inside of the fuselage in the samemanner.
Fig. 12

11. Glue the canopy latch catch 22 in the fuselage nose section
7.
Fig. 13
12. Glue the extension lead to the inside of the fuselage, withthe socket flush with the outside surface, so that the aileronservo lead can be plugged in later when the wings are fitted.
Fig. 14
13. Joining the fuselage shells
Start by trial-fitting the fuselage shells ”dry” (no glue); they should
fit together snugly, without requiring force and without being under
tension. If there is a tight spot at any point, trim the parts where
necessary before gluing the shells together using thick cyano.
You will have a few minutes to get everything right, so work swiftly
but not hurriedly. Join the fuselage shells, immediately line themup correctly, and hold the parts together until the glue starts toset. Do not resume work on the fuselage for a few minutes as
the adhesive takes some time to cure properly.
Fig. 15
14. Aileron horns (both ailerons)
The aileron horns 24 are prepared and installed as shown in
the illustration: 1 x left + 1 x right. Tighten the nuts 27 only lightly,
as the swivel pushrod connectors 25 must turn smoothly. Secure
the nuts with a tiny drop of paint or glue.
Caution: only apply the paint or glue to the outside of the nut
and the stub of the thread.
Glue the horns in the aileron recesses.
Fig. 16
15. Installing the servos and pushrods (both ailerons)
Check from the transmitter that the aileron servos work correctly,
and set them to centre. Fit the output levers on the servo shafts,
ensuring that the arms project out of the wings (see illustration).
Fit the servo arm retaining screws. Fix the servos in their recesses
with a few drops of cyano or hot-melt glue. Connect the aileron
pushrods 30 and adjust them.
Fig. 17
16. Freeing the ailerons (both ailerons)
Carefully release the ailerons by cutting along the marked lines;
the slots should be about 1 mm wide. You will need a very sharpknife to cut the foam cleanly.
Fig. 18
17. Gluing the wing panels 10 + 11 to the fuselage, connecting
the aileron servos
First connect the aileron servo leads (in the wings) to theextension leads which you have already installed in the fuselage.
Leave the leads loose in the channels. Glue the wings to thefuselage, taking care not to glue the cables. Align the wings
carefully before allowing the glue to cure.
Fig. 19
18. Installing the wing spar
Slide the wing spar under the servo leads and through thefuselage, then glue it in place along its full length.
Fig. 20
19. Servo leads and servo fairings
Deploy the servo leads in the channels in the wings, startingfrom the servo end. You may need to use the blunt side of a knife
to push them into the slot. The excess length of the servo leadscan be stowed in the space below the wing root. Trim the servo
fairings 33 to fit, and glue them in place at the corners using
cyano.
Fig. 21
20. Freeing the elevator from the tailplane
Carefully release the elevator by cutting along the marked lines;
the slots should be about 1 mm wide.
Fig. 22
21. Gluing the horn in the elevator
The elevator horn 24 is prepared and fitted as shown in theillustration. Tighten the nut 27 only lightly, as the swivel pushrod
connector 25 must turn smoothly. Secure the nut with a tiny dropof paint or glue.
Caution: only apply the paint or glue to the outside of the nut
and the stub of the thread. Glue the horn in the elevator recess.
Fig. 23
22. Installing the tailplane
Trial-fit the tailplane 12 ”dry” (no glue), and position it accurately.
Carry out any minor trimming required, then glue the tailplane inplace using cyano, and check its position and alignment again.
Hold or pin the panel in position until the glue has set hard.
Connect the pushrod 31 and set it to the correct length using theswivel pushrod connector 25.
Fig. 24
23. FinTrim the fin 13 to fit, and glue it in place. Check that it is exactly atright-angles to the tailplane before the glue sets.
Fig. 25
24. Canopy
Glue the latch tongues 23 in the canopy 9 over their full area, buttake care to fit them projecting by the correct amount - not higher
or lower.
Fig. 26
25. Installing the power unit
The ducted fan (impeller) unit is supplied in the kit ready to install,with a fully balanced rotor. Do not dismantle the assembly unlessthere is a real need to do so - after re-assembly the motor might
be unbalanced, which would lead to a loss of performance.
Fig. 27
Connect the ducted fan 50 to the speed controller, and install the
fan in the fan hatch 6.
Carry out a test-run, and reverse the motor’s direction ofrotation if necessary.
Deploy all cables neatly.
The impeller and the hatch can now be introduced into the main
duct; note that the cables run along the outside of the fuselage in
the appropriate channel, which is then sealed with adhesive
tape. Apply adhesive tape all round the ducted fan hatch to
produce an air-tight seal.
Fig. 28
26. Receiving system and power system fittings
1. The ducted fan unit is already in place.
2. Mount the speed controller on the maintenance hatch forwardof the impeller unit.
3. Fit the LiPo battery (2100, 2500 or 3200 mAh) in the battery
compartment in the nose of the fuselage, adjust its position to
obtain the correct Centre of Gravity, then secure it with Velcrotape.
4. The receiver and cables are also held in place with Velcro
tape 20 + 21, which is supplied in the kit.

27. Centre of Gravity
The CG should be borne in mind when you are installing the RC
system components, to avoid the need for ballast as far as
possible.
The CG should be within the range 100 to 110 mm aft of the wingroot leading edge, measured where the wings meet the fuselage.
The moulded-in dimples on the underside of the wing indicate
the correct balance point.
Fig. 30
28. Model settings (guideline only):
CG:100 - 110 mm
Longitudinal dihedral:approx. +1° (non-variable)
29. Control surface travels:
Measured at the widest point of the control surfaces
Ailerons:
Elevator:

20 mm +/30 mm +/-Exponential: ailerons

30%

30. Test-flying:
Centre of Gravity
Start by balancing the model within the stated range. Once you
have test-flown the model, you can fine-tune the setting as follows:
fly straight and level at half-throttle, and roll the model inverted. If
you now have to apply a great deal of ”down” to hold level flight,
the model is nose-heavy; the CG must be shifted further aft. If themachine climbs whilst inverted, without requiring elevator
correction, the CG is too far aft. When balanced correctly, themodel will require slight down-elevator for level inverted flight.
31. Aileron differential
Fly three or four rolls to the right at half-throttle; if the Twister
veers to the right during this manoeuvre, you need to increase
the aileron differential. If it veers to the left, i.e. against the directionof rolling, you should reduce the aileron differential.
32. Gilding the lily - applying the decals
The kit is supplied with a multi-colour decal sheet, part 2 + 3. Cut
out the individual name placards and emblems and apply themto the model in the positions shown in the kit box illustration, orin another arrangement which you find pleasing. We suggestthat you blacken the canopy and the jet nozzle with a waterproof
felt-tip pen, e.g. EDDING 3000.
33. Safety
Safety is the First Commandment when flying any model aircraft.
Third party insurance should be considered a basic essential. If
you join a model club suitable cover will usually be available
through the organisation. It is your personal responsibility toensure that your insurance is adequate for the type of model(powered model aircraft).
Make it your job to keep your models and your radio control
system in perfect order at all times. Check the correct charging
procedure for the batteries used in your RC set. Make use of allsensible safety measures and precautions which are advisedfor your system. An excellent source of practical accessories isthe MULTIPLEX main catalogue, as our products are designed
and manufactured exclusively by practising modellers for otherpractising modellers.
Always fly with a responsible attitude. You may think that flying
low over other people’s heads is proof of your piloting skill; others
know better. The real expert does not need to prove himself insuch childish ways. Let other pilots know that this is what you
think too. Always fly in such a way that you do not endanger
yourself or others. Bear in mind that even the best RC system in5the world is subject to outside interference. No matter how many
years of accident-free flying you have under your belt, you haveno idea what will happen in the next minute.
We - the MULTIPLEX team - wish you many hours of pleasure inbuilding and flying your new model. Happy landings!
MULTIPLEX Modellsport GmbH & Co. KG
Model Development Dept.

Klaus Michler

Twister KIT
Part
No.

Material

Dimensions

Paper, 80 g / m²
Printed self-adhesive film
Printed self-adhesive film
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam
Moulded Elapor foam

A4
700 x 330 mm
500 x 350 mm
Ready madeReady madeReady madeReady madeReady madeReady madeReady madeReady madeReady madeReady madeSmall parts set
20 3
Velcro tape, hook
21 3
Velcro tap, loop
22 2Latch catch
23 2
Latch tongue
24 4Glue-fitting control surface horn
25 4
Swivel pushrod connector
26 4Washer
27 4
Nut
28 4
Socket-head grubscrew
29 1
Allen key
30 2
Aileron pushrod, one Z-bend
31 1
Elevator pushrod, one Z-bend
32 1
L.H. servo fairing
33 1
R.H. servo fairing
34 2
Ballast weight

Plastic
Plastic
Injection-moulded plastic
Injection-moulded plastic
Injection-moulded plastic
Metal
Metal
Metal
Metal
Metal
Metal
Metal
Vacuum-moulded plastic
Vacuum-moulded plastic
Steel ball, 9 g

25 x 60 mm
25 x 60 mm
Ready madeReady madeReady madeReady made, 6 mm ØM2
M2
M3 x 3 mm
1.5 mm A/F
1 Ø x 80 mm
1 Ø x 110 mm
Ready madeReady made13 mm ØWire and tube set
40 1
Tubular spar
41 3
Fuselage stiffener

GRP tube
GRP rod

8 Ø x 700 mm
1.3 Ø x 250 mm

Ducted fan power set
50 1
DF69 RTR ducted fan with Himax A 2825-3600

Assembled and balanced

Ready made

1
2
3
4
5
6
7
8
9
10
11
12
13

6

No.
off
1
1
1
1
1
1
1
1
1
1
1
1
1

Description
KIT building instructions
Decal sheet, sheet 1
Decal sheet, sheet 1, registration markings
L.H. fuselage shell
R.H. fuselage shell
Ducted fan hatch
L.H. fuselage nose section
R.H. fuselage nose section
CanopyL.H. wing
R.H. wing
Tailplane
Fin

11

40

5

12

13
6

4

9

8
10

7
Abb. 01

34
24

32

25
26
27
28

33

31
3x
41

23

22
Abb. 0230

50
3 x 203 x 21

29
7

5

CA

8
5
(8)
Abb. 04

Abb. 03

5

8
CA

CA
41
22

Abb. 05

Abb. 06

CA
CA

5
34
Abb. 07

Abb. 08

4
CA
CA
(7)
8
7
Abb. 098

Abb. 10

CA
4
CA
41

41
Abb. 12

Abb. 11

CA
CA
7
22
Abb. 13

Abb. 1427, 26,24, 25,28

5CA

Abb. 16

4

8

CA

7

Abb. 15

Abb. 17 30

CA

10

Abb. 18
9

11

CA

10

CA
4
40

CA
Abb. 198

Abb. 20

33

CA

12

Abb. 21Abb.2227, 26, 24, 25, 28
CA
12
CA
12
Abb. 23

Abb. 24

CA
CA

13
9

Abb. 25

10

23

Abb. 2650

6

6Abb. 27

Abb. 28

Abb. 29100

Abb. 30

11

E RSATZTEILER EPLACEMENT PARTS
P IECES DE RECHANGESP ARTI DI RICAMBIO
R EPUESTOS(bitte bei Ihrem Fachhändler bestellen)(please order from your model shop)(S.V.P. à ne commander que chez votre revendeur)(da ordinare presso il rivenditore)(por favor, diríjase a su distribuidor)# 22 4223# 70 3455

Rumpf mit Impellerabdeckung

Gestängeanschluss 2 St.

Fuselage avec trappe de Turbine

Raccords de tringles 2x

Fuselage with Impeller hatch

Swivel pushrod connector 2x

Fusoliera con coperchio

Raccordo per rinvii 2 pz.

Fuselaje con cubierta depropulsores

Retén de varilla 2 Uds.

# 22 4224# 72 4382

Kabinenhaube

Servohutzen

Verriére

Cache-servo (1 paire)

CanopyServo fairing (pair)

Capottina

Carenature per servi (1 coppia)

CabinaEncastres de servo (1 pareja)# 22 4225
Tragflächen
Ailes
Wings
Ali
Alas

# 72 4469
Dekorsatz 2-tlg.
Planche de décorration 2x
Decal set, two-part
Decals 2x
Lámina decorativa, 2 partes# 22 4226# 72 5136

Leitwerkssatz

Canopy-Lock (2 Paar)

Empennage

Canopy-Lock (2 paires)

Tail set

Canopy Lock (2 pairs)

Kit piani di coda

Canopy-Lock (2 coppie)

Kit de empenaje

Cierre de cabina (2 pares)# 22 4227# 72 3128

Kleinteilesatz

HolmrohrSet de petites piéces diverses

Clé d´aile

Small items set

Tubular spar

Set minuteria

Turbo baionetta

Pequeñas piezas

Larguero# 33 2562# 33 2563

Rotor m. Spinner für DF69

Mitnehmer mit Zubehör DF 69

Rotor avec cône pour turbine DF69

Plateau avec accessoires pourturbine DF 69

Rotor and spinner for DF69
impeller
Rotore con ogiva per DF 69

Driver with accessories for DF69
impellerMozzo e accessori per DF 69

Rotor con cono para el propulsor
DF69

Adaptador con accessorios para
DF 69

MULTIPLEX Modellsport GmbH & Co.KG

12

Westliche Gewerbestrasse 1 D-75015 Bretten (Gölshausen) www.multiplex-rc.de