Seagull Models AT-6 TEXAN User manual

MadeinVietnam.
Specifications:
Wingspan-------------------------------------------------- 62.9in---------------------------------------159.8cm.
Wingarea--------------------------------------------------620sq.in----------------------------------40sq.dm.
Approximateflyingweight-----------------------------6.2-7.7lbs---------------------------2.8kg -3.5kg.
Length------------------------------------------------------43.6in----------------------------------------110.8cm.
Recommendedenginesize--------------------------.40 -.52cu.in---------------------------------2-stroke.
------.72 - .82 cu.in-------------------------------- 4-stroke.
ELECTRICCONVERSION:OPTIONAL.
RecommendedR/C---------------------------------------------4channels with 6 servos.
Flyingskilllevel----------------------------------------------------Advanced/Intermediate.
Kit features.
• Ready-made—minimalassembly&finishingrequired.
• Ready-covered—includingdecals,trim&covering.
• Factory-installedpushrod.
• Photo-illustrated step-by-step AssemblyManual.
MS:110
“Graphics and specifications may change without notice”.
ASSEMBLY MANUAL

AT-6 TEXAN _ CODE SEA 110.
2
INTRODUCTION.
Thank you for choosing the AT-6 TEXAN ARTF by SEAGULL MODELS. The AT-6 TEXAN 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
thatmostoftheworkhasbeendoneforyoualready.Themotormounthasbeenfittedandthehinges
are pre-installed . Flying the AT-6 TEXAN 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 AT-6 TEXAN . 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
proceduresdesignedtohelpthenew pilot onhiswaytosuccessfulR/Cflight. Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
ADDITIONAL ITEMS REQUIRED.
.40-.52 cu.in 2-stroke engine.
.72-.82cu.in 4-stroke engine.
4 channels with 6 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
Landinggear.....

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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
havethecorrectpartsandthattheyfit
andarealignedproperlybeforegluing!
This will ensure proper assembly as
the AT-6 TEXAN is made from
natural materials and minor adjust-
ments may have to be 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.
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-pinissnug againstthe aileron.This
will help ensure an equal amount of hinge is
oneithersideofthe hingelinewhentheaileron
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.

AT-6 TEXAN _ CODE SEA 110.
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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)Turnthewing paneloverand 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.
C/Aglue.
Worktheaileronupanddownseveral
times to “work in” the hinges and
check for proper movement.
Note:
Apply epoxy glue.
Hinge.
WING TIP INSTALLATION .
Fillepoxy.
Removecovering.

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Aileron control horn: See pictures below.
AILERON CONTROLHORN
2 sets.
3x35mm.
Maskingtape.
CONTROL HORN
M3 SCREW.
18mm.
Epoxy.
ALUMINUMWASHER.
M3LOCKNUT.
ALUMINUMWASHER.
Epoxy.
Install the wing edge to the wing.

AT-6 TEXAN _ CODE SEA 110.
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Install the elevator control horn using the
same method as with the aileron control
horns.
ELEVATOR CONTROL HORN. Rudder control horn:
Using the same techniques used aileron
control horn. See picture below.
RUDDER CONTROL HORN.
18mm.
Epoxy.
Elevatorcontrolhorn.
Horizontal
Stabilizer.
AluminumWasher.
CONTROL HORN M3
M3LOCKNUT.
Epoxy.
AluminumWasher.
2 sets.
3x30mm.
1 sets.
3x30mm.
CONTROL HORN
M3SCREW.
ALUMINUMWASHER.
ALUMINUMWASHER.
M3LOCKNUT.
EPOXY.
EPOXY.
Fuselage.
18mm.
Rudder.

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Servo arm.
loctile
secure.
Adjustableservo
connector.
25mm.
Servo for retractable only.
Metalconnector.
Servo arm.
25mm.
SERVO GEAR INSTALLATION.
Remove covering.
Remove covering.
Electric wire.
Wing bottom.
PUSHROD INSTALLATION.
M3x25mm.
Rudder control horn.
14
23
5
3mm.

AT-6 TEXAN _ CODE SEA 110.
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3 x 25 mm.
2 x 6 mm.
12
2
3
5
4
Pushrod.
Metalclevis.
M3lock.

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Open Position
Servo arm.
Repeat procedure for other landing gear.
Close Position
Servo arm.
12 mm.
Epoxy.

AT-6 TEXAN _ CODE SEA 110.
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epoxy.
WING ASSEMBLY.
epoxy.

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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.
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.
M4x30mm.
FuelFillTube.
Vent tube. Fuel Pick up
Tube.
3) Carefully bend the second nylon tube up
at a 45º angle. This tube is the vent 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.
1 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.
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.

AT-6 TEXAN _ CODE SEA 110.
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Fuelpick-up tube.
venttube.
Fuelfill tube.
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.
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.
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.
INSTALLING THE BATTERY.
Battery.
Tiewrap.
Fueltank. 1
1
Epoxy.
 7) When satisfied with the alignment of
thestopperassemblytightenthe3mm 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.
Attach the silicone fuel and pressure pipes
tothe tank. Thelower pipe isthe ‘feed’andthe
uppertwo the‘pressure andfill’. The fillpipe is
the next pipe.
 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.

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MOUNTING THE ENGINE.
Engine 4 stroke :
115mm.
1.5 mm.
M3 x 25 mm.
M3 x 25 mm.
Trim and cut.
M3 x 25 mm. Pushrod wire.

AT-6 TEXAN _ CODE SEA 110.
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M3x 10 mm.
1.5mm wire
(needlevalve).
COWLING.
Dummy
Engine.
Trim and cut.
Trim and cut.
M3 x10 mm.
Electric Conversion (Ep Power)
(OPTION).
Engine 2 stroke :

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Diametrer = 5.2 mm.
Epoxy.
M4x 15 mm.

AT-6 TEXAN _ CODE SEA 110.
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Battery.
Balsa block.
Electric motor.
Balsa block.
M3 x 15mm. Speed control.
Electric motor.
115mm.
Epoxy. Epoxy.

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SPINNER INSTALLATION.
Small weight.
String.
Small weight.
Servos. Thread.
INSTALLING THE AILERON SERVOS.
Aileron
Servo.
String. Attach the string to the servo lead and carefully thread it through the wing.
Small weight.
M2 x 12 mm.

AT-6 TEXAN _ CODE SEA 110.
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Pen.
Draw center line.
Remove covering.
When cutting through the covering to re-
move it, cut with only enough pressure
toonly cut throughthe coveringitself. Cutting
into the balsa structure may weaken it.
INSTALLINGTHE HORIZONTALSTABILIZER.
Elevatorservo . Throttleservoarm.
Rudderservo.
INSTALLING THE FUSELAGE SERVOS-
SWITCH.
Switch. Elevator. Throttle.
Rudder.
M3 x15mm.
THROTTLE SERVO ARM INSTALLATION.
1) Install adjustable servo connector in
the servo arm as same as picture below:
AdjustableServo
connector.
Servoarm.
Nut.

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Epoxy.
Remove covering.
1
Trimandcut.
Epoxy. INSTALLING THE VERTICALSTABILIZER.
Hingeslot.
1
Pen.

AT-6 TEXAN _ CODE SEA 110.
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80mm.
Trimandcut. 90mm.
8mm.
M2 Lock nut.
Attach to servo arm in fuselage.
Wire keeper.
80mm. M2clevis.
8mm.
Epoxy.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
Putthe verticalstabilizer intothe in thetop
of the horizontal fin. The bottom edge of the
stabilizershould alsobefirmly pushedagainst
the top of the horizontal stabilizer.
When cutting through the covering to re-
move it, cut with only enough pressure
toonly cut throughthe coveringitself. Cutting
into the balsa structure may weaken it.
Epoxy.
Remove covering.
Hinge. C/Aglue.
INSTALLATIONTHEPUSHROD.