Seagull Models SEA FURY User manual

MadeinVietnam.
SEA FURSEA FUR
SEA FURSEA FUR
SEA FURYY
YY
Y
Specifications:
Wingspan----------------------------------------- 66in------------------------167.5cm.
Wingarea----------------------------------- 842sq.in-------------------54.3sq.dm.
Approximateflyingweight------------------9.5lbs---------------------------4.3kg.
Length--------------------------------------------------59in----------------------------150cm.
Recommendedenginesize------.91-1.20cu.in-------------------------2-stroke.
-------.91- 1.20 cu.in-------------------- 4-stroke.
RecommendedR/C-----------------------------6channelswith9digitalservos.
Flyingskilllevel-------------------------------------------Advanced/Intermediate.
ASSEMBLY MANUAL
Kit features.
• Ready-made—minimalassembly&finishingrequired.
• Ready-covered—includingdecals,trim&covering.
• Factory-installedpushrod.
• Comprehensive hardwarepack includingwheels,tank,parts,undercarriage.
• Photo-illustrated step-by-step AssemblyManual.

SEA FURY. Instruction Manual.
2
INTRODUCTION.
Thank you for choosing the SEA FURY ARTF by SEAGULL MODELS. The SEA FURY was
designedwiththeintermediate/advancedsportflyerinmind.Itisa semiscaleairplane whichiseasy
to fly and quick to assemble. The airframe is conventionally built using balsa, plywood to make it
stronger than the average ARTF , yet the design allows the aeroplane to be kept light. You will find
that most of the work has been done for you already.
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your SEA FURY . 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
proceduresdesigned tohelpthenewpilotonhiswayto successfulR/Cflight.Theywillalsobe able
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED.
!.91-1.20 2-stroke engine.
.91-1.20 4-stroke engine.
!Computer radio with nine digital
servos.
!Glow plug to suit engine.
!Propeller to suit engine.
!Protective foam rubber for radio
system.
!Siliconefuelline.
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.
PARTS LISTING.
FUSELAGE ASSEMBLY
!(1) Fuselage.
!(1) Canopy.
WING ASSEMBLY
!(1) Right wing half/ aileron.
!(1) Left wing half/ aileron.
!(1)Midlewing.
Tail section assembly
! (1) Horizontal stabilizer/ elevator
halves.
!(1) Rudder halves.
Some more parts.
HARDWAREPACK
COWLING
Landing gear.....

SEA FURY. Instruction Manual.
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NOTE: To avoid scratching your new aero-
planewesuggestthatyoucoveryour
workbench with an old towel. Keep a
couple of jars or bowls handy to hold
the small parts after you open the
bags.
Pleasetrialfitallparts.Makesureyou
have the correct parts and that they
fit and are aligned properly before
gluing! This will ensure proper as-
sembly as the SEA FURY is made
from natural materials and minor ad-
justments may have to be made.
The paint and plastic parts used in
this kit are fuel proof. However, they
arenottolerantofmanyharshchemi-
cals including the following: paint
thinner, cyano-acrylate glue accel-
erator,cyanoacrylategluede-bonder
andacetone.Donotletthesechemi-
calscomein contact withthecolours
onthecoveringandtheplasticparts.

SEA FURY. Instruction Manual.
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There are 2 options for colour scheme for SEA FURY:
1. Option 1: Standard colours (Silver).
2. Option 2: Blue and White colour, you should use black pen (fuel proof) to draw the
panel lines on the airplane as same as pictures below.
Pen.

SEA FURY. Instruction Manual.
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SEA FURY. Instruction Manual.
6
!4)Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfrontsurfaceshouldlightlycontactthe
wing during this procedure. Ideally, when the
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.
!1)Carefullyremove theaileron fromoneof
thewingpanels.Notethepositionofthehinges.
!2)Removeeachhingefrom thewing panel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untiltheT-pin issnugagainst the aileron.This
will help ensure an equal amount of hinge is
oneither sideof thehingelinewhentheaileron
is mounted to the wing panel.
HINGING THE AILERONS.
Note:
!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.Agap of 1/64” or less
shouldbemaintained betweenthewing panel
andaileron.
Hinge.
T-pin.
Hinge.
T-pin.
T-pin.
T-pin.
!5)Turnthewing paneloverand deflectthe
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge,making surethattheC/Apenetrates into
both the aileron and wing panel.
Thehinge isconstructed ofa 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.
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.
C/Aglue.
Note:

SEA FURY. Instruction Manual.
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!8)Afterboth ailerons aresecurely hinged,
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.
!6)UsingC/Aremover/debonderandapaper
towel, remove any excess C/A glue that may
haveaccumulatedonthewingorintheaileron
hingearea.
C/Aglue.
Workthe aileron upand down several
times to “work in” the hinges and
check for proper movement.
Note:
HINGING THE ELEVATORS.
Glue the elevator hinges in place using the
same tectniques used to hinge the ailerons.
HINGING THE RUDDER.
INSTALLING RETRACTABLE
LANDING GEAR.
6mm.
5mm.
1
1
172mm.
Glue the rudder hinges in place using the
same tectniques used to hinge the ailerons.

SEA FURY. Instruction Manual.
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C/Aglue.
Repeat procedure for orther landing
gear.
Remove covering.
Cut. Plasticwheel cover.
Drillhole
diameter15mm.
Metalclevis.
Pushrod.
M2lock.
Metalconnector.
Servo arm.
Servo for retractable only.
Remove covering.
INSTALLING RETRACTABLE
SERVO.
3 x 12mm.

SEA FURY. Instruction Manual.
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INSTALLING THE MAIN GEAR
WHEELS.
Cut.
Plywood.
2 x 8mm.
2 x 8mm.
Epoxy.

SEA FURY. Instruction Manual.
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Attach a servo lead to the flap servo.Attach
thestring to theservoleadand carefullythread
it though the wing. Once you have thread the
leadthrought the wing, removethe string so it
canusefortheother servolead.Tapethe servo
lead to the wing to prevent it from falling back
into the wing.
Using a small weight (Weighted fuel pick-up
workswell)andthread, feedthe string through
the wing as indicated.
Small weight.
Thread.
Wing bottom.
Electric wire.
Sanding.
Cut.
INSTALLING THE FLAP SERVO.
Because the size of servos differ, you
may need to adjust the size of the precut
opening in the mount. The notch in the
sides of the mount allow the servo lead to
pass through.
!1) Install the rubber grommets and brass
collets onto the flap servo. Test fit the servo
into the flap servo mount.
We recommended to use long servos
arm for all servos without throttle
servo.
!2) Securethe servos withthe screws pro-
vided from your radio system.
Small weight.
Servos. Thread.

SEA FURY. Instruction Manual.
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! 3) Install the flap servo mount into the
wing, with the output shaft towards the lead-
ing edge of the wing.
Repeat the procedure for the other wing
half.
INSTALLING THE FLAP SERVO
CONTROL HORN.
!2) Using a ruler & pen to draw a straight
line as pictures below.
!1) Put the flap in flap mount.
Electric wire.
Plastic tape.
Flap.
Flap mount.
Pen.
Straightline.
12mm.

SEA FURY. Instruction Manual.
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C/Aglue.
C/Aglue.
T-pins.
Flap servo.
Topflap.
Hinges.
! 4) Using a 1.5mm drill bit and the control
horns as a guide, drill the mounting holes
through the flap halves.
!
5)Mount the control horns by inserting the
bolts through the control horn bases and flap
halves,then into themounting backplates. Do
notovertightenthenuts or the backplates may
crush the wood.
! 3) Locate the nylon control horns,nylon
control horn backplates and three machine
screws.
! 4) Position theflap horn onthebottom side
of flap. Bottom flap.
2 x 20mm.
M3lock nut.
M3lock nut.
Falp control horn.

SEA FURY. Instruction Manual.
13
WING ASSEMBLY.
NOTE:We highly recommend using 30
minute epoxy as it is stronger and
providesmoreworkingtime,allowing
thebuildertoproperlyaligntheparts.
Using fast cure epoxy when joining
the wing halves could result in the
gluedryingbeforethewinghalvesare
aligned properly which may result in
failure of the wing centre section
duringflight.
!1)Locatetheplywoodwingdihedralbrace.
Using a ruler, locate its centre and draw a
vertical line .
! 2)Testfitthedihedralbraceintoeachwing
half. The brace should slide in easily up to the
centreline that you drew. If not, use 220 grit
sandpaper with a sanding block and sand
down the edges and ends of the brace until it
fits properly.
Pen.
Markpoint.
Cut.
M2 lock nut. Snapkeeper.
Snapkeeper.
Centre line.
Dihedral
brace.
! 3) Remove the brace when satisfied
withits fit ineach wing half.Coat both sidesof
one half of the dihedral brace with 30 minute
epoxy.Next,poursomeepoxyintothedihedral
box in one wing panel. Make sure you cover
the top and bottom as well as the sides of the
dihedral brace. Use enough epoxy to fill any
gaps.

SEA FURY. Instruction Manual.
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Because the size of servos differ, you
may need to adjust the size of the precut
opening in the mount. The notch in the
sides of the mount allow the servo lead to
pass through.
Using a small weight (Weighted fuel pick-up
workswell)andthread, feedthe string through
the wing as indicated.
!1) Install the rubber grommets and brass
colletsontotheaileronservo. Testfittheservo
into the aileron servo mount.
We recommended to use long servos
arm for all servos without throttle servo.
Small weight. Wing bottom.
Thread.
Electric wire. Thread.
!2) Securethe servos withthe screws pro-
vided from your radio system.
Maskingtape.
!4) Carefully slide the two wing halves
together and firmly press them together,
allowing the excess epoxy to run out. There
shouldnot be anygap in the wing halves.Use
rubbingalcohol anda papertower toclean up
any excess epoxy.
!5) Apply masking tape at the wing join to
hold the wing halves together securely.
Epoxy.
INSTALLING THE AILERON SERVOS.
Small weight.
Servos. Thread.

SEA FURY. Instruction Manual.
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Attach the thread to the servo lead and
carefully thread it though the wing. Once you
havethreadtheleadthroughtthewing,remove
the string so it can use for the other servo
lead.Tapetheservoleadtothewingto prevent
it from falling back into the wing.
!3) Install the aileron servo mount into the
wing, with the output shaft towards the lead-
ing edge of the wing.
Repeat the procedure for the other wing
half.
AILERON LINKAGE.
INSTALLING THEAILERONLINKAGE.
!1) Using a ruler & pen to draw a straight
line as below picture.
Plastic tape.
Thread. Top side.
Electric wire.
Pen.
Straightline.

SEA FURY. Instruction Manual.
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Repeat the procedure for the other wing
half.
Pen. Markpoint.
Cut.
M2lock nut. Snapkeeper.
! 4) Using a 1.5mm drill bit and the control
horns as a guide, drill the mounting holes
through the aileron halves.
!
5)Mount the control horns by inserting the
bolts through the control horn bases and
aileron halves, then into the mounting
backplates. Do not overtighten the nuts or the
backplates may crush the wood.
Aileroncontrol
horn.
! 2) Locate the nylon control horns,nylon
control horn backplates and three machine
screws.
! 3) Position the aileron horn on the bottom
side of aileron.
12mm.
2 x 30mm.
M3lock nut.
M3 lock nut.

SEA FURY. Instruction Manual.
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FUEL TANK.
INSTALLING THE STOPPERASSEMBLY.
!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.
!2) Using a modeling knife, cut one length of
siliconfuelline. Connect one end oftheline to
theweighted fuel pickup and the otherend to
the nylon pick up tube.
INSTALLING THE ENGINE MOUNT.
See pictures below:
!3) Carefully bend the second nylon tube up
at a 45º angle. This tube is the vent tube.
When the stopper assembly is in-
stalled in the tank, the top of the vent
tube should rest just below the top surface
of the tank. It should not touch the top of
the tank.
! 5) 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.
!4) Carefully heat the vent tube using a
heat gun or lighter to permanently set the
angle of the tube.
FuelFill Tube.
Vent tube. Fuel Pick up
Tube.
4 x 30mm.

SEA FURY. Instruction Manual.
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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.
MOUNTING THE ENGINE.
! 1) Install the pushrod housing through the
predrilledholeinthe firewall and into theservo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
Make a Z-Bend 1/4" from one end of the plain
wire pushrod.
! 2) Place your engine onto the engine
mount. Adjust the engine is centered of the
edges of the engine case.
! 3) When you are satisfied with the align-
ment, mark the locations of the engine
mounting.
Fueltank.
Vent tube.
Fuelfill
tube.
Fuel pick up
tube.
O.S .91
135mm.
Slide the tankinto the fuselagefrom inside so
that the neck is at the top of the fuselage and
itlocatesthrough the enginebulkhead.Gently
secure it to the top horizontal former with a
cable tie.
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 the tank is installed inside
thefuselage, it may be difficultto determine
which is which.
Attach the silicone fuel and pressure pipes
tothetank.The lower pipe isthe‘feed’and the
upper two the ‘pressure and fill’. The fill pipe
is the next pipe.
! 6) With the stopper assembly in place,
the weighted pickup 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.
! 7) When satisfied with the alignment of
thestopper assembly tightenthe3mmx20mm
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.

SEA FURY. Instruction Manual.
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Trim and cut.
1mm.
! 2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowl with the crankshaft of the engine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening.Use thespinnerbackplateasaguide.
Hold the cowl firmly in place using pieces of
masking tape.
! 4) Remove the engine. Using an drill bit,
drill the mounting holes through the engine
mount at the four locations marked.
! 6) Attach the Z-Bend in the pushrod wire
to the throttle arm on the carburetor. You will
need to remove the throttle arm from the car-
buretor to be able to attach the Z-bend. When
complete, reattach the throttle arm to the car-
buretor.
! 5) Bolt the engine to the engine mount
using the four machine screws. Double
cheek that all the screws are tight before
proceeding.
!1) Slide the fiberglass cowl over the en-
gineandlineup the back edge ofthecowl with
the marks you made on the fuselage.
COWLING.
4 X 30 mm.
Pushrod wire.
Because of the size of the cowl, it may
be necessary to use a needle valve exten-
sion for the high speed needle valve. Make
this out of sufficient length 1.5mm wire and
install it into the end of the needle valve.
Secure the wire in place by tightening the
set screw in the side of the needle valve.
4 x 30mm. 4.2mm.
Trim and cut. 3 x 10mm.

SEA FURY. Instruction Manual.
20
1.5mm wire
(needlevalve).
3x10mm.
! 3) Installthe muffler and muffler extension
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 3x10mm screws.
Drill 1mm.
Markpoint.
Paper tape.