Black Horse Model T-28 Trojan 120 User manual

SPECIFICATION
MadeinVietnam.


Wingspan : 163 cm 64.17 inches.


Length : 130 cm 51.18 inches.


Weight : 3.3kg 7.26 lbs.


Radio : 5 channels.


Servo : 7 servos.


Glow Engine : 61 cu.in 2 stroke.
91 cu.in 4 stroke.
Instruction Manual book
ITEM CODE: BH45.

TROJAN. Instruction Manual
2
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour TROJAN.Usethepartslistingbelowtoidentify
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 tohelpthenewpiloton hiswaytosuccessfulR/C flight.Theywillalso beable
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.....
Toavoidscratching yournew airplane, do not
unwrap the pieces until they are needed for
assembly. Cover your workbench with an old
towel or brown paper, both to protect the
aircraftandtoprotectthetable.Keepa couple
of jars or bowls handy to hold the small parts
after you open the bag.
Pleasetrial fitalltheparts.Make sureyouhave
the correct parts and that they fit and are
alignedproperlybeforegluing! This will assure
proper assembly. TROJAN ARF is hand made
from natural materials, every plane is unique
andminoradjustments may have to bemade.
However, you should find the fit superior 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
following: paint thinner, C/A glue accelerator,
C/A glue debonder and acetone. Do not let
these chemicals 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.

TROJAN. INSTRUCTION MANUAL
3
+ 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.
+Theglow plugclipmustbesecurelyattached
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.
Do not stand in line with the side of the
propeller.
+ Make engine adjustments from behind the
propeller only. Do not reach around the
spinningpropeller.
SAFETY PRECAUTION.
Caution: this model is not a toy!
If you are a beginner to this type of powered
model,pleaseaskanexperiencedmodel flyer
forhelpandsupport. If you attempt to operate
themodelwithout knowing what youaredoing
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 built a large number
ofRCmodels please read right 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: Blowwarmairover the area
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
bebuiltin a 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.

TROJAN. Instruction Manual
4
 1. Install the rubber grommets and brass
eyelets onto the aileron and flap servo.
INSTALLING THE AILERON- FLAPSERVOS.
C/Aglue
C/Aglue
C/Aglue
C/Aglue
Bottom side.
Flap. Aileron.
Servo tray.

TROJAN. INSTRUCTION MANUAL
5
3.Drill 1,5mm pilot holes through the block
of wood for each of the four mounting screws
providedwiththeservo.Installservointoaileron
servo tray as same as picture below.
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,
remove the masking tape and the servo lead
from the thread.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
Aileron.
2 x 10 mm.

TROJAN. Instruction Manual
6
Aileron.
Repeat the procedure for the other wing
half.
1. Using a ruler & pen to draw a straight
line as below picture.
Flap.
Flap.
INSTALLING THE AILERON - FLAPSERVO
CONTROLHORN.
Removecovering
aileroncontrol horn
3 x 40mm.
Nilon control clasp.
M3lock nut.

TROJAN. INSTRUCTION MANUAL
7
3. Install aileron control horn as same as
picture below.
2. Install control horn as same as picture
below.
Flap.
control horn.
4. InstallFlapcontrol horn as same as the
way of aileron control horn.
1. Working with the aileron linkage for
now, thread one clevis onto one of the
threaded wires.
2. Attach the clevis to the outer hole in the
control horn.
3. Plug the aileron servo into the receiver
andcenter the servo.Installtheservo armonto
the servo. The servo arm should be
perpendicular to the servo and point toward
the middle of the wing.
Bend .
C/Aglue.
C/Aglue.
control horn.
Aileron.
INSTALLING THE AILERON
LINKAGES.

TROJAN. Instruction Manual
8
5.Usingpliers, carefully make a 90degree
bend down at the mark made. Cut off the
excess wire, leaving about 4mm beyond the
bend.
6.Insert the90degree bend down through
the hole in the servo arm. Install one nylon
snap keeper over the wire to secure it to the
arm.Installtheservoarmretainingscrewand
remove the masking tape from the aileron.
Repeat the procedure for the other wing
half.
4. Locate one nylon servo arm, and using
wire cutters,remove all but one of the arms.
Using a 2mm drill bit, enlarge the third hole
outfromthe centerofthearm toaccommodate
the aileron pushrod wire.
Cut.
Aileron.
M2lock nut.
M2clevis. Snapkeeper. Flap.
Bendand cut.
Aileron.
Flap.
Flap.

TROJAN. INSTRUCTION MANUAL
9
Bottom side
Flap
servo.
Aileron
servo.
finishing
Top side.
1. Location the aluminium wing dihedral
brace.
Remove covering.
2. Using a modeling knife, remove the cov-
ering wing.
3.Testfitthedihedralbrace into each wing
haft. The brace should slide in easily. If not,
use 220 grit sand down the edges and ends
of the brace until it fits properly.
JOINING THE WING HALVES.
Flap.
Aileron.
Epoxyglue.
Dowelbrace.
Aluminium
brace. Epoxy
glue.

TROJAN. Instruction Manual
10
Wing bolt plate
Apply masking tape.
Maskingtape.
Markpoint.

TROJAN. INSTRUCTION MANUAL
11
INSTALLING LANDING GEAR.
See pictures below:
3x12mm.
Remove covering.
Markpoint
1mm drill bit.

TROJAN. Instruction Manual
12
Cut
ENGINE MOUNT.
See pictures below:
3.5x25mm.
4x 30mm.

TROJAN. INSTRUCTION MANUAL
13
INSTALLING THE STOPPER ASSEMBLY
1. The stopper has been pre-assembled
at the factory.
2. Using a modeling knife, cut one length
ofsiliconfuelline (the length of silicon fuelline
iscalculatedby howtheweightedclunkshould
restabout8mmaway from the rear of the tank
andmovefreelyinsidethetank). Connect one
FUEL TANK.
end of the line to the weighted clunk and the
other end to the nylon pick up tube in the
stopper.
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. Carefullybendthethird nylon tube down
ata45 degree angle (using acigarettelighter).
This tubewillbeventtubetothefuelingvalve.
When the stopper assembly is installed in
the tank, the top of the vent tube should rest
justbelowthetopsurfaceofthetank.Itshould
not touch the top of the tank.

TROJAN. Instruction Manual
14
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.
9. To secure the fuel tank in place, apply a
bead of silicon sealer to the forward area of
thetank,whereitexitsthefuselage behind the
enginemounting boxandtothe rearofthetank
at the forward bulkhead.
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.
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,thefrontofthe tank should just about
touch the back of the firewall.
5. Test fit the stopper assembly into the
tank. It may be necessary to remove some of
the flashing around the tank opening using
amodelingknife. Ifflashing is present, make
sure none of it falls into the tank.
6. When satisfied with the alignment of
thestopper assemblytightenthe3mm x20mm
machine screw until the rubber stopper
expands and seals the tank opening. Do not
over tighten the assembly as this could cause
the tank to split.
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.
(Silicon tube not included)
Silicon tube.
Vent tube Fuel pick- up tube
Fuelfill tube

TROJAN. INSTRUCTION MANUAL
15
12,5cm
INSTALLING THE ENGINE.
Locate the long piece of wire used for the
throttlepushrod.Oneendofthe wire has been
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armof theenginewhentheengineisfitted onto
theenginemount. Fit the engine to the engine
mount using the screws provided.
Pushrod wire.

TROJAN. Instruction Manual
16
INSTALLING THE NOSE GEAR.

TROJAN. INSTRUCTION MANUAL
17
COWLING.
1. Slide the fiberglass cowl over the en-
gineandlineupthebackedgeofthecowlwith
the marks you made on the fuselage.
Trimandcut.
Trimandcut.

TROJAN. Instruction Manual
18
Machine screw.
4. Installthe mufflerandmuffler extension
onto the engine and make the cutout in the
cowl for muffler clearance. Connect the fuel
and pressure lines to the carburetor, muffler
andfuelfiller valve.
2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwith thecrankshaftoftheengine. 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.
3. Slide the cowl back over the engine
andsecureitinplace using four wood screws.
3x 10mm.

TROJAN. INSTRUCTION MANUAL
19
1. Install the rubber grommets and brass
colletsinto theelevatorservo.Testfittheservo
into the servo tray.
2. Mount the servo to the tray using the
mounting screws provided with your radio
system.
SERVO INSTALLATION.
ELEVATOR INSTALLATION.
1. Using amodeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
HORIZONTAL STABILIZER
INSTALLATION.
C/Aglue

TROJAN. Instruction Manual
20
4. Remove the stabilizer. Using the lines
youjustdrew as a guide, carefullyremove the
coveringfrombetweenthemusingamodeling
knife.
When cutting through the covering to
remove it, cut with only enough pressure
to only cut through the covering it’s self.
Cutting into the balsa structure may
weaken it. This could lead to possible
failure during flight.
Remove
covering.
Bottom side.
3. Marktheshapeoftheverticalon the left
and right sides onto the horizontal stabilizer
using a left-tip pen.
2. Draw a center line onto the horizontal
stabilizer.Put the horizontalinto the fuselage.
Top side.
Center line.
C/Aglue
C/Aglue
Pen.
Bottom side.