Seagull Models Silence Twister User manual

MS:140
“Graphics and specifications may change without notice”.
ASSEMBLY MANUAL
Specifications:
Wingspan----------------------------66.9in(170cm).
Wingarea-----------------691.3sq.in(44.6sqdm).
Weight----------------------8.8-10.6lbs(4.0-4.8kg).
Length------------------------------53.3in(135.3cm).
Engine ----------------------0.91cu.in----2-stroke.
0.91-1.10-1.25cu.in ----4-stroke.
Radio--------------------6 channelswith9servos.
Retractslandinggear(included)-optional.
Electricconversion: optional
The Seagull “Silence Twister” is a scale model of a home
built aircraft which is currently in production by the Silence
Aircraft factory in Germany. With it’s unique elliptical wing
shape which is very reminiscent of the famous Spitfire,
the Twister captures the magnificent aerobatic
characteristics of the Spitfire with the appearance and
performance of a modern day pleasure craft. Carefully
manufactured from Balsa & Plywood, the Seagull “Silence
Twister” is lightweight, strong, easy to repair and lots fun
to fly.

SILENCE TWISTER.Instruction Manual.
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INTRODUCTION.
Thank you for choosing the SILENCE TWISTER ARTF by SEAGULL MODELS. The SILENCE
TWISTER was designed with the intermediate/advanced sport flyer in mind. It is a semi scale
airplane whichiseasytoflyandquicktoassemble.Theairframeisconventionallybuiltusingbalsa,
plywoodtomakeitstrongerthanthe average ARTF ,yetthedesignallowstheaeroplane to be kept
light. You will find that most of the work has been done for you already.The motor mount has been
fitted and the hinges are pre-installed . Flying the SILENCE TWISTER is simply a joy.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your SILENCE TWISTER . Use the parts listing
below to identify all parts.
WARNING.
Please be aware that this aeroplane is not a toy and if assembled or used incorrectly it is
capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU
ASSUME ALL RISK & RESPONSIBILITY.
IfyouareinexperiencedwithbasicR/CflightwestronglyrecommendyoucontactyourR/Csupplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training
proceduresdesignedtohelpthenewpilotonhis way to successful R/Cflight.Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
KIT CONTENTS
129
3
4
55
6
7
10 11 11 8
11
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ADDITIONAL ITEMS REQUIRED.
0.75-0.91 2-stroke.
0.91-1.25 4-stroke.
Computer radio with 5 servos.
Glow plug to suit engine.
Propeller to suit engine.
Protective foam rubber for radio
system.
Siliconefuel line.
TOOLS & SUPPLIES NEEDED.
Thick cyanoacrylate glue.
30 minute epoxy.
5 minute epoxy.
Hand or electric drill.
Assorted drill bits.
Modellingknife.
Straight edge ruler.
2mm ball driver.
Phillips head screwdriver.
220 grit sandpaper.
90° square or builder’s triangle.
Wire cutters.
Masking tape & T-pins.
Thread-lock.
Paper towels.
KIT CONTENTS.
1 Fuselage
2 Canopy
3 Left wing panel
4 Right wing panel
5 Tail set
6 Aluminum wing tube
7 Scale pilot
8 Fiberglass cowl
9 Main landing gear
10 EP conversion pack
11 Hardware bag included
INSTALLING LED LIGHTING SYSTEM.
HINGING THE FLAP.
Hinge.
T-pin.
C/Aglue.
4.8v led lights.

SILENCE TWISTER.Instruction Manual.
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4) Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfrontsurface should lightlycontactthe
wing during this procedure. Ideally, when the
hinges are glued in place, a 1/64” gap or less
will be maintained throughout the lengh of the
aileron to the wing panel hinge line.
Hinge.
The control surfaces, including the
ailerons, elevators, and rudder, are
prehinged with hinges installed, but
the hinges are not glued in place. It
is imperative that you properly
adhere the hinges in place per the
steps that follow using a high-quality
thin C/A glue.
2)Removeeach hingefromthe wingpanel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untiltheT-pin is snug against the aileron.This
will help ensure an equal amount of hinge is
oneithersideofthehingeline when theaileron
is mounted to the wing panel.
HINGING THE AILERONS .
Note:
Hinge.
T-pin.
3) Slide the aileron on the wing panel until
there is only a slight gap. The hinge is now
centered on the wing panel and aileron.
Remove the T-pins and snug the aileron
against the wing panel.A gap of 1/64” or less
shouldbe maintainedbetween thewing panel
andaileron.
1) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
Hinge.
C/Aglue.

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8)Afterboth ailerons are securelyhinged,
firmly grasp the wing panel and aileron to
make sure the hinges are securely glued and
cannot be pulled out. Do this by carefully
applying medium pressure, trying to separate
the aileron from the wing panel. Use caution
not to crush the wing structure.
7) Repeat this process with the other wing
panel, securely hinging the aileron in place.
Workthe aileron up and down several
times to “work in” the hinges and
check for proper movement.
Note:
Thehingeis constructed of a special
material that allows the C/A to wick
or penetrate and distribute
throughout the hinge, securely
bonding it to the wood structure of
the wing panel and aileron.
Note:
6) Using C/A remover/debonder and a
papertowel, remove any excess C/Aglue that
may have accumulated on the wing or in the
aileronhinge area.
5)Turnthe wingpanel over and deflect the
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge,makingsurethattheC/Apenetratesinto
both the aileron and wing panel.
HINGING THE ELEVATOR.
Glue the elevator hinges in place using the
same techniques used to hinge the ailerons.
C/Aglue.
HINGING THE RUDDER.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
Hinge.
C/Aglue.

SILENCE TWISTER.Instruction Manual.
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INSTALL FLAP CONTROL HORN.
Flap control horn.
Aileroncontrol horn.
INSTALL THE AILERONS CONTROL
HORN.
Epoxy.
INSTALL ELEVATOR CONTROL HORN.
Epoxy.
Epoxy.
Epoxy.
Epoxy.

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Ruddercontrolhorn.
INSTALL RUDDER CONTROL HORN.
Elevator control horn.
Epoxy.
ENGINE MOUNT INSTALLATION.
1) Locate the items necessary to install the
engine mount included with your model. .
2) Use four M4x30mm head bolts and four
4mmwashers to attachthe enginemount rails
tothe firewall.Tightenthe screws . Make sure
to use threadlock on the screws to help
prevent them from vibrating loose.
M4x30mm.
+ 0.75 - 0.91: 2 STROKE.
5.5mm.
5.5mm.

SILENCE TWISTER.Instruction Manual.
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Blindnut.
Thread locker glue.
5.5mm.
5.5mm.
Blindnut.
Thread locker glue.
+ 0.91 - 1.20 : 4 STROKE.

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1) Using a modeling knife, carefully cut
off the rear portion of one of the 3 nylon tubes
leaving 1/2” protruding from the rear of the
stopper. This will be the fuel pick up tube.
INSTALLING THE STOPPER ASSEMBLY.
2) Usinga modelingknife, cutone length
ofsilicon fuel line. Connectone endof theline
tothe weightedfuel pick up and the other end
to the nylon pick up tube.
A
You should mark which tube is the vent
and which is the fuel pickup when you attach
fuel tubing to the tubes in the stopper. Once
thetank isinstalled inside the fuselage, itmay
be difficult to determine which is which.
Vent tube. Fuel pick up tube.
Fuel fill tube.
3) Carefully bend the second nylon tube
up at a 45º angle. This tube is the vent tube.
5) With the stopper assembly in place,
the weighted pick-up should rest away from
therear of the tank and move freely inside the
tank. The top of the vent tube should rest just
below the top of the tank. It should not touch
the top of the tank.
6) When satisfied with the alignment of
the stopper assembly tighten the 3 x 20mm
machine screw until the rubber stopper ex-
pands and seals the tank opening. Do not
overtighten the assembly as this could cause
the tank to split.
FUEL TANK INSTALLATION.
4) Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using a
modeling knife. If flashing is present, make
sure none falls into the tank.

SILENCE TWISTER.Instruction Manual.
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Rudder servo.
Elevator servo.
Throttle servo.
THROTTLE SERVO ARM INSTALLATION.
AdjustableServo
connector.
Servoarm.
Loctite secure.
1PCS.
Throttleservoarm. Elevator servoarm.
Rudderservoarm.
Installadjustableservoconnectorinthe servo
arm as same as picture below:
SERVO ARM GEAR INSTALLATION.
Servoarm.
Metalconnector.
Tie wrap.
Vent tube.
Fuel pick up tube.
Fuel fill tube.
C/Aglue.
Fuel tank.
Blow through one of the lines to en-
sure the fuel lines have not become kinked
inside the fuel tank compartment. Air
should flow through easily.
A
Fuel tank.
INSTALLING THE FUSELAGE SERVOS.
1) Installthe rubber grommets and brass
colletsontothethrottle servo. Test fit theservo
into the aileron servo mount.
 2) Secure the servos with the screws pro-
vided with your radio system.
Because the size of servos differ, you
mayneedtoadjust the sizeoftheprecut open-
ing in the mount. The notch in the sides of the
mount allow the servo lead to pass through.

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Switch.
Trimand cut.
3/32” Hole.
INSTALLING THE SWITCH.
Installthe switch into the precuthole inthe
side, in the fuselage.
Throttleservoarm. Elevator servoarm.
Rudderservoarm.
Trimand cut.
Switch.
String.
Small weight.
INSTALLING THEAILERON - FLAP SERVOS.
Servos. Smallweight.
Thread.
1) Usinga smallweight (Weighted fuelpick-up
workswell)and string, feedthestring through
the wing as indicated.
Because the size of servos differ, you
mayneedtoadjustthesizeoftheprecutopen-
ing in the mount. The notch in the sides of
themountallowtheservoleadtopassthrough.

SILENCE TWISTER.Instruction Manual.
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3) Use drill bit in a pin vise to drill the mouting
holes in the blocks.
6) Secure the servo to the aileron hatch using
Phillips screwdriver and the screws provided
with the servo.
5) Use dental floss to secure the connection
so they cannot become unplugged.
7) Apply 1-2 drops of thin C/A to each of the
mounting tabs. Allow the C/A to cure without
using accelerator.
4) Apply 2-3 drops of thin C/A to each of the
mounting holes. Allow the C/A to cure without
using accelerator.
C/Aglue.
2) Place the servo between the mounting
blocksandspace it from the hatch. Use a pencil
to mark the mounting hole locations on the
blocks.

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Aileronservo.
Flapservo.
140mm.
2) Use a pin drill and 4mm drill bit to drill a
small indentation in the mount for the engine
mounting screw.
MOUNTING THE ENGINE.
 1) Position the engine with the drive washer
(140mm) forward of the firewall as shown.
+ ENGINE .75 - .91 : 2 STROKE.

SILENCE TWISTER.Instruction Manual.
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9) Move the throttle stick to the closed position
and move the carburetor to closed. Use a 2.5mm
hex wrench to tighten the screw that secures
the throttle pushrod wire. Make sure to use
threadlock on the screw so it does not vibrate
loose.
4) On the fire wall has the location for the
throttle pusshrod tube (pre-drill).
7) Slide the throttle pushrod wire into the tube.
Position the engine between the mounts. Use
four M4x30mm machine screws to secure the
engine to the mount as shown.
5) Slide the pushrod tube in the firewall and
guide it through the fuel tank mount. Use
medium C/A to glue the tube to the firewall and
the fuel tank mount.
6) Connect the Z-bend in the 450mm throttle
pushrod to the outer hole of the carburetor arm.
Machinescrew M4x30mm.
Pushrodwire.
4.5mm.
4mm.
3) Use a drill to drill the four holes in the engine
mount rails. 8) Reinstall the servo horn by sliding the
connector over the pushrod wire. Center the
throttle stick and trim and install the servo horn
perpendicular to the servo center line.

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+ ENGINE .91 - 1.2 : 4 STROKE.
150mm.
 1) Positiontheenginewiththedrivewasher
(150mm) forward of the firewall as shown.
2) Use a pin drill and 4mm drill bit to drill a
small indentation in the mount for the engine
mounting screw.
4mm.
4) On the fire wall has the location for the
throttle pusshrod tube (pre-drill).
7) Slide the throttle pushrod wire into the tube.
Position the engine between the mounts. Use
four M4x30mm machine screws to secure the
engine to the mount as shown.
5) Slide the pushrod tube in the firewall and
guide it through the fuel tank mount. Use
medium C/A to glue the tube to the firewall and
the fuel tank mount.
6) Connect the Z-bend in the 450mm throttle
pushrod to the outer hole of the carburetor arm.
Machinescrew M4x30mm.
4.5mm.
3) Use a drill to drill the four holes in the engine
mount rails.
Pushrodwire.
4.5mm.
8) Reinstall the servo horn by sliding the
connector over the pushrod wire. Center the
throttle stick and trim and install the servo horn
perpendicular to the servo center line.

SILENCE TWISTER.Instruction Manual.
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2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwiththecrankshaft of theengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening.Usethespinnerbackplateasaguide.
Hold the cowl firmly in place using pieces of
masking tape.
COWLING.
1) Slide the fiberglass cowl over the en-
gineandline upthe back edgeof the cowlwith
themarks youmade on the fuselage thentrim
and cut as shown.
9) Move the throttle stick to the closed position
and move the carburetor to closed. Use a 2.5mm
hex wrench to tighten the screw that secures
the throttle pushrod wire. Make sure to use
threadlock on the screw so it does not vibrate
loose.
Becauseof the size of the cowl, itmay benec-
essaryto usea needle valve extension forthe
highspeed needle valve. Makethis outof suf-
ficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
placeby tighteningthe setscrew in the side of
the needle valve.
+ ENGINE .75 - .91 : 2 STROKE.
Trimand cut.
Trimand cut.
Trimand cut.

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1) Slide the fiberglass cowl over the en-
gineandline upthe back edgeof the cowlwith
themarks youmade on the fuselage thentrim
and cut as shown.
Machine screw M3x10mm.
Needlevalve.
 3) Install the mufflerand mufflerextension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
and fuel filler valve. Secure the cowl to fuse-
lage using the M3x10mm screws.
+ ENGINE .91 - 1.2 : 4 STROKE.
Trimand cut.
Trimand cut.
Trimand cut.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwiththecrankshaft of theengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening.Usethespinnerbackplateasaguide.
Hold the cowl firmly in place using pieces of
masking tape.
Becauseof the size of the cowl, itmay benec-
essaryto usea needle valve extension forthe
highspeed needle valve. Makethis outof suf-
ficient length 1.5mm wire and install it into the
end of the needle valve. Secure the wire in
placeby tighteningthe setscrew in the side of
the needle valve.

SILENCE TWISTER.Instruction Manual.
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- Model size: .75-.90 size models
- Motor: 50mm 310 rev per volt
- Propeller: 14x10 ~ 15x10
- ESC: 60A
- Lipo Batteries: 8 cell 3200mA
2) Attach the electric motor box to the firewall
suitable with the cross lines drawn on the electric
motor box and firewall. Using epoxy and balsa
stick to secure the motor box to the firewall.
Please see pictures below.
ELECTRIC POWER CONVERSION.
1) Locate the items neccessary to install the
electric power conversion included with your
model.
 3) Install the mufflerand mufflerextension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
and fuel filler valve. Secure the cowl to fuse-
lage using the M3x10mm screws.
Machinescrew M3x10mm.

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5.2mm.
5.2mm.
Blind nut.
M4x20mm.
4mm.
M3x15mm.
3) Attach the motor to the front of the electric
motor box using four 4mm blind nut, four
M3x15mm hex head bolts to secure the motor.
Please see picture shown.
Blind nut.

SILENCE TWISTER.Instruction Manual.
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INSTALLINGTHE HORIZONTALSTABILIZER.
Drawcenter line.
1) Using a ruler and a pen, locate the
centerline of the horizontal stabilizer, at the
trailingedge,and placeamark. Use atriangle
and extend this mark, from back to front,
across the top of the stabilizer. Also extend
thismark down the back of the trailingedge of
the stabilizer.
2)Usingamodelingknife,carefully remove
the covering at mounting slot of horizontal
stabilizer.
INSTALLING THE SPINNER.
Install the spinner backplate, propeller and
spinner cone.
The propeller should not touch any part
of the spinner cone. If it does, use a
sharp modeling knife and carefully trim away
the spinner cone where the propeller comes
in contact with it.
speedcontrol.
5) Attach the speed control to the side of the
motor box using two-sided tape and tie wraps.
Connect the appropriate leads from the speed
control to the motor. Make sure the leads will
not interfere with the operation of the motor.
Tiewraps.
4) Locate the plywood battery tray to the
fuselage.
Battery.
Balsa stick.
140mm.
Epoxy.