Black Horse Model T-28 Trojan 120 Owner's manual

SPECIFICATION
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Wingspan : 200cm 78.74 in.
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Length : 162cm 63.78 in.
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Weight : 5.4 kg 11.88 Lbs.
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Radio : 07 channels.
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Servo : 10 servos.
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Engine : 120 2 stroke.
20CC -Gas.
Instruction Manual book
MadeinVietnam.

T-28 TROJAN . Instruction Manual
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This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour T-28TROJAN120.Usethepartslistingbelow
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
proceduresdesignedtohelpthe new pilotonhiswaytosuccessfulR/C flight.Theywillalsobeable
to advise on any insurance and safety regulations that may apply.
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.
Some more parts.
HARDWAREPACK
COWLING.
Landinggear.....
Toavoid scratching yournew airplane, donot
unwrap the pieces until they are needed for
assembly. Cover your workbench with an old
towel or brown paper, both to protect the air-
craftand toprotect the table.Keep acouple of
jars or bowls handy to hold the small parts af-
ter you open the bag.
Pleasetrialfitallthe parts. Makesureyouhave
the correct parts and that they fit and are
alignedproperlybefore gluing!Thiswillassure
proper assembly. T-28 TROJAN 120 ARF is
handmadefromnatural materials,everyplane
is unique and minor adjustments may have to
be made. However, you should find the fit su-
perior and assembly simple.
The painted and plastic parts used in this kit
are fuel proof. However, they are not tolerant
of many harsh chemicals including the follow-
ing:paintthinner,C/Aglueaccelerator,C/Aglue
debonderandacetone.Donotletthese chemi-
cals come in contact with the colors on the
covering and the plastic parts.
PARTS LISTING
FUSELAGE ASSEMBLY
(1) Fuselage.
WING ASSEMBLY
(1) Right wing half with pre-installed
aileron.
(1) Left wing half with pre-installed
aileron.
Tail section assembly
(1) Vertical stabilizer with pre-
installedrudder.
(1) Horizontal stabilizer with pre-
installedelevatorhalves.
SUGGESTION
NOTE.

T-28 TROJAN. INSTRUCTION MANUAL
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Caution: this model is not a toy!
If you are a beginner to this type of powered
model,pleaseask anexperiencedmodel flyer
forhelp andsupport. If youattempt tooperate
themodelwithout knowing whatyouaredoing
you could easily injure yourself or somebody
else. Please keep your safety and well-being
in mind at all times.
Important: before you start construction
Evenif you have already builta largenumber
ofRC modelsplease readright through these
instructions and check all the kit components
against the parts list. We have taken great
trouble to keep construction as simple as
possible, without making any compromises
in the area of safety.
Note regarding the film covering
Minor creases or bubbles may develop in the
film covering due to major fluctuations in
weather conditions (temperature, humidity
etc.); in rare cases you may even find a slight
warp in a component. These minor faults are
in the nature of film-covered built-up wooden
structures, and can easily be corrected using
a heat gun, as commonly used for modelling.
Creases: Blowwarmair overthearea
and rub down with a soft
cloth.
Wing warp: Hold the panel twisted
gently in the opposite
direction to the warp, and
apply warm air to remove
the creases from the
covering.
Caution! do not heat the film more than is
absolutely necessary. If the air or the iron is
too hot, the film may melt and holes may be
formed.
This model is highly pre-fabricated and can
bebuiltina veryshorttime.However, the work
which you have to carry out is important and
must be done carefully. The model will only
be strong and fly well if you complete your
tasks competently - so please work slowly
and accurately.
When self-tapping screws have to be
screwed into wood, apply a little white
glue to prevent them shaking loose: just
squirt white glue into the hole and fit the
screw.
+ This is not a toy
+ Be sure that no other flyers are using your
radio frequency.
+ Do not smoke near fuel
+ Store fuel in a cool, dry place, away from
children and pets.
+ Wear safety glasses.
+Theglowplugclipmustbesecurelyattached
to the glow plug.
+ Do not flip the propeller with your fingers.
+ Keep loose clothing and wires away from
thepropeller.
+ Do not start the engine if people are near.
Donot standin linewiththe sideof thepropel-
ler.
+ Make engine adjustments from behind the
propeller only. Do not reach around the spin-
ningpropeller.
SAFETY PRECAUTION.
REPLACEMENT LARGE PARTS
B. Wing panel.
C. Fuselage.
A.Cowling.
D . Horizon stabilizer.
F. Aluminium wing dihedral brace.
G. Decal sheet.
E. Vertical stabilizer
REPLACEMENT SMALL PARTS
A
F
B
B
C
E D
G.

T-28 TROJAN . Instruction Manual
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INSTALLING THE AILERON - FLAPSERVO
CONTROLHORN.
C/Aglue
C/Aglue
C/Aglue
C/Aglue
C/Aglue
Flap
C/Aglue
Aileron
Bottom side
Aileron
Flap

T-28 TROJAN. INSTRUCTION MANUAL
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 1. Install the rubber grommets and brass
eyelets onto the aileron servo.
INSTALLING THE AILERON SERVO .
 2.Usinga modelingknife, removethe cov-
ering servo tray.
Servo tray.
Removecovering
 3.Drill 1,5mmpilot holesthrough theblock
of wood for each of the four mounting screws
provided with the servo. Install servo into ai-
leron servo tray as same as picture below.
Secure
 4. Using the thread as a guide and using
masking tape, tape the servo lead to the end
of the thread: carefully pull the thread out.
When you have pulled the servo lead out, re-
move the masking tape and the servo lead
from the thread.
thread
Aileron
C/Aglue
Aileron
Flap Bottom side

T-28 TROJAN . Instruction Manual
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Electric wire
 5. Instal servo tray with aileron servo into
the wing as same as picture below.
Secure
2x10mm.
Repeat the procedure for the other wing
half.
INSTALLING THEAILERON CONTROL HORN.
Nilon control clasp.
3 x 40mm
Remove covering
Aileron

T-28 TROJAN. INSTRUCTION MANUAL
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Repeat the procedure for the other wing
half.
Installing the aileron linkages as pictures
below.
INSTALLING THE AILERON
LINKAGES.
M3 M3 lock nut
Installaileroncontrolhornassame
aspicturebelow.
Control horn
of the aileron

T-28 TROJAN . Instruction Manual
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INSTALLING THE FLAP SERVO .
2x10mm.
INSTALLING THE FLAP CONTROL HORN.
Nilon control clasp.
3 x 40mm
Flap
Thread
Electric
wire
Thread Flap Removecovering

T-28 TROJAN. INSTRUCTION MANUAL
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Repeat the procedure for the other wing
half.
Installing the aileron linkages as pictures
below.
INSTALLING THE FLAP
LINKAGES.
Control horn
of the flap
INSTALLING AIR RETRACTABLE
LANDING GEAR.
Aileron
Flap Bottom
Markpoint
Drill a hole 3mm
diameter
3 x 15mm

T-28 TROJAN . Instruction Manual
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3 x 15mm
Secure
Secure
Epoxyglue
Epoxyglue
C/Aglue.

T-28 TROJAN. INSTRUCTION MANUAL
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Secure
See pictures below:
INSTALLING THE ENGINE MOUNT.
4x30mm
4x30mm
Repeat the procedure for the other wing
half.
Drill a hole
5mm diameter
ENGINE MOUNT.

T-28 TROJAN . Instruction Manual
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end of the line to the weighted clunk and the
otherend tothe nylonpickup tubein thestop-
per.
 3) Carefully bend the second nylon tube
up at a 45 degree angle (using a cigarette
lighter). This tube will be the vent tube to the
muffler.
 4) Carefullybend thethirdnylontube down
ata45 degreeangle(usinga cigarettelighter).
This tubewill be venttube to thefueling valve.
INSTALLING THE STOPPER ASSEMBLY
 1) The stopper has been pre-assembled
at the factory.
 2) Using a modeling knife, cut one length
ofsilicon fuelline (thelengthof siliconfuel line
iscalculatedbyhow theweightedclunkshould
restabout 8mmaway from therear ofthe tank
andmove freelyinsidethe tank).Connect one
When the stopper assembly is installed in the
tank, the top of the vent tube should rest just
belowthe topsurface ofthe tank. Itshould not
touch the top of the tank.
FUEL TANK.
Vent tube Fuel pick- up tube
Fuelfill tube
 5) Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using
amodeling knife. If flashing is present, make
sure none of it falls into the tank.
 6) When satisfied with the alignment of
thestopperassemblytightenthe3mm x20mm
machine screw until the rubber stopper ex-
pandsandseals thetankopening.Do notover
tighten the assembly as this could cause the
tank to split.
Blow through one of the lines to ensure
the fuel lines have not become kinked inside
the fuel tank compartment. Air should flow
througheasily.
 9) To secure the fuel tank in place, apply a
bead of silicon sealer to the forward area of
thetank, where itexitsthe fuselagebehindthe
enginemountingboxandtothe rear ofthetank
at the forward bulkhead.
 8) Feed three lines through the fuel tank
compartment and through the pre-drilled hole
in the firewall. Pull the lines out from behind
the engine, while guiding the fuel tank into
place. Push the fuel tank as far forward as
possible,thefront ofthetank should justabout
touch the back of the firewall.
 7) Using a modeling knife, cut 3 lengths of
fuel line 150mm long. Connect 2 lines to the 2
vent tubes and 1 line to the fuel pickup tube in
the stopper.

T-28 TROJAN. INSTRUCTION MANUAL
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Do not secure the tank into place perma-
nently until after balancing the airplane. You
may need to remove the tank to mount the
battery in the fuel tank compartment
Fueltank
INSTALLING THE ENGINE.
Locate the long piece of wire used for the
throttlepushrod.One endofthe wirehasbeen
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armoftheenginewhentheengineis fitted onto
theengine mount.Fit theengineto theengine
mount using the screws provided.
140mm
Drill a hole
4mm diameter
Markpoint

T-28 TROJAN . Instruction Manual
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Pushrodwire
Secure
4x 30mm
Pushrod wire.
Left side
Right side.

T-28 TROJAN. INSTRUCTION MANUAL
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INSTALLING NOSE AIR RETRACTABLE
LANDING GEAR.
3 x 15mm
3 x 15mm

T-28 TROJAN . Instruction Manual
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 1) Slide the fiberglass cowl over the en-
gineand line uptheback edgeofthe cowlwith
the marks you made on the fuselage.
COWLING.
3) Slide the cowl back over the engine
andsecure itinplace usingfour woodscrews.
See picture below.
4) Installthemufflerandmufflerextension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
andfuel fillervalve.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwiththe crankshaftoftheengine. The
front of the cowl should be positioned so the
crankshaft is in nearly the middle of the cowl
opening. Hold the cowl firmly in place using
pieces of masking tape.
Secure
Top side
Trim and cut

T-28 TROJAN. INSTRUCTION MANUAL
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Right side
3 x 12mm
Machine screw
Left side
Right side
Left side
Bottom side

T-28 TROJAN . Instruction Manual
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 1. Install one adjustable metal connector
through the third hole out from the center of
one servo arm, enlarge the hole in the servo
arm using a 2mm drill bit to accommodate the
servo connector. Remove the excess mate-
rial from the arm.
After installing the adjustable metal con-
nector apply a small drop of thin C/A to
the bottom nut. This will prevent the con-
nector from loosening during flight.
INSTALLING THE THROTTLE PUSHROD
Throttle servo
Connector.
Servo arm.
Secure
Throttle servo
Throttle pushrod

T-28 TROJAN. INSTRUCTION MANUAL
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INSTALLING THE SERVO NOSE GEAR.
Connector.
Servo arm.
Secure
Cut
Nose gear servo
Throttle pushrod
 1. Install the rubber grommets and brass
colletsintotheelevator servo.Testfitthe servo
into the servo tray.
 2. Mount the servo to the tray using the
mountingscrewsprovided withyourradio sys-
tem.
ELEVATOR INSTALLATION.
SERVO INSTALLATION.

T-28 TROJAN . Instruction Manual
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HORIZONTAL STABILIZER.
See pictures below:
 1. Draw a center line onto the horizontal
stabilizer. Then slide the horizontal into the
fuselage.
 2 Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
 3. Marktheshape ofthevertical onthe left
and right sides onto the horizontal stabilizer
using a left-tip pen.
C/Aglue
C/Aglue
C/Aglue
C/Aglue
C/Aglue
C/Aglue
Remove covering
center line