Seagull Models SEA 94 Pilatus PC-9 User manual

MadeinVietnam.
Specifications:
Wingspan-------------------------------------------------- 63.0in---------------------------------------160cm.
Wingarea---------------------------------------------------647.9sq.in----------------------------41.8sq.dm.
Approximateflyingweight--------------------------84-9.3lbs-------------------------------------3.8-4.2kg.
Length------------------------------------------------------ 58.3in----------------------------------------148cm.
Recommendedenginesize-------------------------.75-.91cu.in-------------------------------------2-stroke.
.91-1.00cu.in--------------------------------------4-stroke.
ELECTRICCONVERSION:OPTIONAL.
RecommendedR/C---------------------------------------------4channelswith7servos.
Flyingskilllevel----------------------------------------------------Advanced/Intermediate.
Kit features.
• Ready-made—minimalassembly&finishingrequired.
• Ready-covered—includingdecals,trim&covering.
• Factory-installedpushrod.
• Photo-illustrated step-by-step AssemblyManual.
MS: SEA 103
“Graphics and specifications may change without notice”.
ASSEMBLY MANUAL
PC - 9

PC-9 _ CODE SEA 103.Instruction Manual.
2
ADDITIONAL ITEMS REQUIRED.
.75-.91 cu.in 2-stroke engine.
.91-1.00cu.in 4-stroke engine.
4 channels with 7 servos.
Computer radio with 7 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)Midle wing.
Tail section assembly
 (1) Horizontal stabilizer/ elevator
halves.
(1) Rudder halves.
Some more parts.
HARDWAREPACK
COWLING
Landing gear.....
INTRODUCTION.
Thank you for choosing the PC-9 ARTF by SEAGULL MODELS. The PC-9 was designed with
the intermediate/advanced sport flyer in mind. It is a scale airplane which is easy to fly and quick
to assemble. The airframe is conventionally built using balsa, plywood to make it stronger than the
averageARTF,yetthedesignallowstheaeroplanetobekeptlight.Youwillfindthatmostofthework
has been done for you already. The motor mount has been fitted and the hinges are pre-installed
. Flying the PC-9 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 PC-9 . 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.
If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C
supplierandjoinyourlocalR/CModelFlyingClub.R/CModelFlyingClubsofferavarietyoftraining
proceduresdesignedtohelp thenewpilot onhiswaytosuccessful R/Cflight.They willalsobeable
to advise on any insurance and safety regulations that may apply.

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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) Carefully remove the aileron from one
of the wing panels. Note the position of the
hinges.
2)Remove eachhinge fromthe wingpanel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untiltheT-pinis snugagainst the aileron.This
will help ensure an equal amount of hinge is
oneithersideofthehingeline whentheaileron
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.Agap of 1/64” or less
shouldbe maintainedbetweenthe wingpanel
andaileron.
4)Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfront surfaceshouldlightlycontactthe
wing during this procedure. Ideally, when the
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.
Note:
T-pin.
Hinge.
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
havethecorrectpartsandthattheyfit
andarealignedproperlybeforegluing!
This will ensure proper assembly as
the PC-9 is made from natural
materialsandminoradjustmentsmay
have to be made. The paint and
plastic parts used in this kit are fuel
proof.However,they arenot tolerant
of many harsh chemicals including
the following: paint thinner, cyano-
acrylate glue accelerator, cyanoacr-
ylategluede-bonderandacetone.Do
not let these chemicals come in
contact with the colours on the
covering and the plastic parts.

PC-9 _ CODE SEA 103.Instruction Manual.
4
HINGING THE ELEVATORS.
Glue the elevator hinges in place using the
same techniques used to hinge the ailerons.
HINGING THE RUDDER.
Glue the rudder hinges in place using the
same techniques used to hinge the ailerons.
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.
6) Using C/A remover/debonder and a
papertowel, removeanyexcessC/Agluethat
may have accumulated on the wing or in the
aileronhingearea.
5)Turn thewingpaneloverand deflectthe
aileron in the opposite direction from the
opposite side. Apply thin C/A glue to each
hinge,makingsure thattheC/Apenetratesinto
both the aileron and wing panel.
Aileron control horn: See pictures below.
WING TIP INSTALLATION.
C/Aglue.
Workthe aileron upand downseveral
times to “work in” the hinges and
check for proper movement.
Note:
Fill epoxy.
Cut.

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2 sets.
M3x35mm.
Install the elevator control horn using the
same method as with the aileron control
horns.
ELEVATOR CONTROL HORN.
2 sets.
3mmx35mm.
AILERON CONTROL HORN.
Maskingtape.
Wing
bottom.
Aileroncontrolhorn.Aileron.
M3LOCK
ALUMINUMWASHER.
ALUMINUMWASHER.
CONTROLHORN
M3 SCREW.
Epoxy.
Epoxy.
18mm.
14mm.
EPOXY.
Horizontal
Stabilizer. Elevator.
ALUMINUMWASHER.
CONTROLHORNM3
M3LOCKNUT.
Epoxy.
Horizontal
Stabilizer. Elevator.
ALUMINUMWASHER.

PC-9 _ CODE SEA 103.Instruction Manual.
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Servo arm.
loctile
secure.
Adjustableservo
connector.
25mm.
Servofor retractableonly.
Metalconnector.
Servoarm.
25mm.
SERVO GEAR INSTALLATION.
Ruddercontrol horn.
Remove covering.
3mm.
Rudder control horn:
Using the same techniques used aileron
control horn. See picture below.
RUDDER CONTROL HORN.
1 sets.
3mmx35mm.
Elevatorcontrol horn.
CONTROL HORN
M3 SCREW.
ALUMINUMWASHER.
ALUMINUMWASHER.
M3LOCKNUT.
EPOXY.
FUSELAGE Rudder
14mm.
EPOXY.
Fuselage. Rudder.

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Removecovering.
Electric wire.
Wing bottom.
GEAR INSTALLATION.
M3x25mm.
1
234
1
2
4
1
M3x25mm
3
Pushrod.
Metalclevis.
M3lock.
120mm.
110mm.
5
4

PC-9 _ CODE SEA 103.Instruction Manual.
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WING ASSEMBLY.
servoarm. 12mm.
Close Position.
25mm.
C/Aglue.
Maskingtape.
Aluminum tubes diameter = 19x806mm.
Servo arm.
Open Position
C/A.

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Epoxy.
Epoxy.
Maskingtape.

PC-9 _ CODE SEA 103.Instruction Manual.
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Mark and drill 4 holes for engine mount.
Insert 4 blind nuts to firewall.
See pictures below.Make yourself the
template of your engine on paper.
ENGINE MOUNT INSTALLATION.
M4x30mm.
3) Carefully bend the second nylon tube up
at a 45º angle. This tube is the vent tube.
INSTALLING THE STOPPER ASSEMBLY.
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
siliconfuel line. Connectone endofthelineto
theweightedfuel pickup and theotherend to
the nylon pick up tube.
4) Carefully heat the vent tube using a
heat gun or lighter to permanently set the
angle of the tube.
FuelFillTube.
Venttube. Fuel Pick up
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.
A

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 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.
 6) With the stopper assembly in place,
the weighted pickup should rest away from
therearof the tankandmove freely insidethe
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
thestopperassemblytighten the3mmx20mm
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.
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 maybedifficult todetermine
which is which.
Slidethe tankinto thefuselage frominsideso
that the neck is at the top of the fuselage and
itlocates throughtheenginebulkhead.Gently
secure it to the top horizontal former with a
cable tie.
Fueltank.
Fuelpick-uptube.
Venttube.
Fuelfilltube.
FUEL TANK INSTALLATION.
C/Aglue.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should flow
through easily.
Rubber bank.
1
A.

PC-9 _ CODE SEA 103.Instruction Manual.
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Pushrodwire.
MachineScrewM4x30mm.
4.2mm.
4) Remove the engine. Using an drill bit,
drill the mounting holes through the engine
mount at the four locations marked.
 3) When you are satisfied with the align-
ment, mark the locations of the engine
mounting.
1) Install the pushrod housing through the
predrilledhole inthe firewalland intothe servo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
Makea Z-Bend1/4" fromone endof theplain
wire pushrod.
MOUNTING THE ENGINE.
 2) Place your engine onto the engine
mount. Adjust the engine is centered of the
edges of the engine case.
135mm.
C/A
20mm 1

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Needlevalve.
MachineScrewM3x10mm.
.
Trim and cut.
MachineScrewM3x10mm.
.
Electric Conversion (Ep Power)
(OPTION).
Epoxy.
Trim and cut.
COWLING

PC-9 _ CODE SEA 103.Instruction Manual.
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Battery. M3x15mm.
M4 x 15mm.
Epoxy.
Balsa block.
Blind nut.
5.2mm.
Epoxy.
Epoxy.
135mm.
Electric motor.
Balsa block.
Epoxy.

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Aileron
Servo.
String. Attach the string to the servo lead and carefully thread it through the wing.
Small weight.
INSTALLING THE AILERON SERVOS.
Installing the aileron servo in place using the
same techniques used to flap servo.
Servos. Smallweight.
Thread.
String.
Small weight.
INSTALLING THE AILERON SERVOS.
Install the spinner backplate, propeller and
spinner cone.
SPINNER INSTALLATION.
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.
M2 x 12 mm.

PC-9 _ CODE SEA 103.Instruction Manual.
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Wing.
Aileron.
INSTALLING THE FUSELAGE SERVO.
Cut .
Elevatorservo.
Throttleservo arm.
Rudder.
Stearingservo.
M2locknut.
8mm.
8mm Snapkeeper.
Snapkeeper.
Servoarm.
AILERONPUSHROD HORNINSTALLATION
Cut.

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Pen.
Remove the covering.
Epoxy.
Switch.
Cut.
INSTALLINGTHE HORIZONTALSTABILIZER.
INSTALLING THE SWITCH.
Installthe switchintotheprecutholeinthe
side of fuselage.
Epoxy.

PC-9 _ CODE SEA 103.Instruction Manual.
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Epoxy.
Remove the covering.
Pen.
Cut.
INSTALLING THEVERITICALSTABILIZER.
Cut.
Maskingtape.

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Control horn.
Elevator Pushrod.
Metalclevis.
M3locknut.
ELEVATOR PUSHROD HORN
INSTALLATION.
A.
C/A.
A.
2) Elevator pushrods assembly follow
pictures below.
1) Thread one clevis and M3 lock nut on
toeach elevatorcontrol rod. Threadthe horns
onuntil theyare flushwiththeendsofthecon-
trol rods.
PushrodL=125mm.
M lock
3
MetalLevis.
Rudder pushrod.
M3locknut.
Control horn.
Metalclevis.
ELEVATOR PUSHROD HORN
INSTALLATION.

PC-9 _ CODE SEA 103.Instruction Manual.
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Rudder servo.
Elevator .
Throttleservo arm.
Stearingservo.
Pushrod .
M lock
3
MetalLevis.