Seagull Models T-6A Texan II User manual

MadeinVietnam.
Specifications:
Wingspan---------------------------------------------63.0in--------------------------------------------160cm.
Wingarea---------------------------------------644.5sq.in--------------------------------------41.6sq.dm.
Approximateflyingweight------------------------9.3lbs--------------------------------------------4.2kg.
Length--------------------------------------------------58.1in-----------------------------------------147.5cm.
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-USA
“Graphics and specifications may change without notice”.
ASSEMBLY MANUAL
T-6A Texan II

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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ADDITIONAL ITEMS REQUIRED.
.75-91 cu.in 2-stroke engine.
.91-100cu.in 4-stroke engine.
4 channels with 7 servos.
Computer radio with nine 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.
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 T-6A Texan II ARTF by SEAGULL MODELS. The T-6A Texan II
wasdesignedwiththeintermediate/advancedsportflyerinmind.Itisa scale airplane 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
thatmostoftheworkhasbeendoneforyoualready. Themotormounthasbeenfittedandthehinges
are pre-installed . Flying the T-6A Texan II 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 T-6A Texan II . 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
proceduresdesignedtohelpthenew pilot onhiswaytosuccessfulR/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)Removeeach hingefromthe wingpanel
and aileron and place a T-pin in the center of
each hinge. Slide each hinge into the aileron
untilthe T-pin issnug againstthe aileron.This
will help ensure an equal amount of hinge is
oneithersideofthe hinge linewhentheaileron
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.
4)Deflect the aileron and completely
saturate each hinge with thin C/A glue. The
aileronsfrontsurface shouldlightlycontact the
wing during this procedure. Ideally, when the
Thehinge is 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.
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 T-6A Texan II is made from
natural materials and minor adjust-
mentsmay havetobe made. The
paintand plastic partsused in thiskit
are fuel proof. However, they are not
tolerant of many harsh chemicals in-
cluding the following: paint thinner,
cyano-acrylate glue accelerator, cy-
anoacrylate glue de-bonder and
acetone. Do not let these chemicals
come in contact with the colours on
the covering and the plastic parts.

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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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 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) Using C/A remover/debonder and a
papertowel, removeanyexcess C/Aglue that
may have accumulated on the wing or in the
aileronhinge area.
5)Turn thewing panelover and deflectthe
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.
Aileron control horn: See pictures below.
WING TIP INSTALLATION.
C/Aglue.
Worktheaileronupanddownseveral
times to “work in” the hinges and
check for proper movement.
Note:
Fill epoxy.
Cut.

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2 sets.
M3x40mm.
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.
Aileroncontrol horn.Aileron.
M3LOCK
ALUMINUMWASHER.
ALUMINUMWASHER.
CONTROLHORN
M3 SCREW.
Epoxy.
Epoxy.
18mm.
18mm.
EPOXY.
Horizontal
Stabilizer. Elevator.
ALUMINUMWASHER.
CONTROLHORNM3
M3LOCKNUT.
Epoxy.
Horizontal
Stabilizer. Elevator.
ALUMINUMWASHER.

T-6A Texan II _ CODE SEA 103-USA.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.
M3LOCK NUT.
EPOXY.
FUSELAGE Rudder
18mm.
EPOXY.
Fuselage. Rudder.

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

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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WING ASSEMBLY.
servoarm. 12mm.
Close Position.
25mm.
Open Position
Servo arm.
C/Aglue.
Maskingtape.
Aluminum tubes diameter = 19x806mm.

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Epoxy.
Epoxy.
Maskingtape.

T-6A Texan II _ CODE SEA 103-USA.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. Connectoneend ofthe line to
theweighted fuelpick up andthe otherend 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.
FuelFill Tube.
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
therear of thetank and movefreely 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
thestopperassemblytightenthe3mmx 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.
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,itmay be difficult to determine
which is which.
Slide thetank intothe fuselagefrom insideso
that the neck is at the top of the fuselage and
itlocates throughthe engine bulkhead.Gently
secure it to the top horizontal former with a
cable tie.
Fueltank.
Fuelpick-up tube.
Venttube.
Fuelfill tube.
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.
A.
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
predrilledholein thefirewalland intotheservo
compartment. The pushrod housing should
protrude 1/4" out past the front of the firewall.
Makea Z-Bend 1/4"from oneendof 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.

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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Needlevalve.
Trim and cut.
MachineScrewM3x10mm.
.
Pushrodwire.
MachineScrewM4x30mm.
4.2mm.
Trim and cut.
COWLING
135mm.

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MachineScrewM3x10mm.
Epoxy.
135mm.
Electric motor.
Electric Conversion (Ep Power)
(OPTION).
Balsa block.
Epoxy.
Epoxy.
4mm.
Epoxy.
Blind nut.

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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INSTALLING THE AILERON SERVOS.
Servos. Smallweight.
Thread.
Battery. M3x15mm.
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.
M3x15mm.
Epoxy.
Balsa block.
Installing the aileron servo in place using the
same techniques used to flap servo.
String.
Small weight.

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Attach the string to the servo lead and carefully thread it though the wing.
String.
Wing.
Small Weight.
Wing. Wing rib.
String.
Small Weight.
AILERONPUSHROD HORNINSTALLATION
Aileron.
90mm.
INSTALLING THE AILERON SERVOS.
AILERONPUSHROD HORNINSTALLATION
90mm.
8mm.
Cut.
8mm Snapkeeper.
Snapkeeper.
Servoarm.

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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INSTALLING THE FUSELAGE SERVO.
Cut .
Elevatorservo.
INSTALLING THE SWITCH.
Installthe switchintothe precuthole inthe
side of fuselage.
Throttleservo arm.
Rudder.
Stearingservo.
Wing.
Aileron.
M2lock nut.
A.
A.
B.
B.
180mm.

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Pen.
Epoxy.
Remove the covering.
Switch.
Removethecovering.
INSTALLING THE HORIZONTALSTABILIZER.
Epoxy.
Cut.
C/A glue.

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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Pen.
Remove the covering.
Cut.
Epoxy.
C/Aglue.
INSTALLING THEVERITICALSTABILIZER.
Cut.
Maskingtape.

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A.
C/A.
A.
B.
B.
B.
1.8mmx200mm.
ELEVATOR PUSHROD HORN
INSTALLATION.
8mm.
8mm.
1.8mmx200mm.
Snapkeeper.
Cut.
40mm.
Epoxy.
40mm.
Epoxy.

T-6A Texan II _ CODE SEA 103-USA.Instruction Manual.
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Rudder pushrod.
M2lock nut.
Control horn.
Elevator Pushrod.
Metalclevis.
M2lock nut. Control horn.
Metalclevis.
ELEVATOR PUSHROD HORN
INSTALLATION.
8mm. M2 lock nut . M2clevis.
Rudder servo.
Elevator .
Throttleservo arm.
Stearingservo.