Black Horse Model YAK 54 Owner's manual

SPECIFICATION
MadeinVietnam.
INSTRUCTION MANUAL BOOK.
Wingspan : 107 cm 42.13 in.
Length : 92 cm 36.22 in.
Weight : 0.8kg 1.76 lbs.
Radio : 4 channels.
Servo : 4 servos.
Partslistingrequired(notincluded):
Electric Motor: AXI 2808/24.
Battery : 3 CELLS - LI - POLY - 11.1v-2000mA.h.
Propeller : 11 x 3.8.
Speed Control: 25A.
ITEM CODE: BH46.

YAK 54-EP. INSTRUCTION MANUAL.
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This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your YAK 54- EP. 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 pilotonhiswaytosuccessfulR/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.....
To avoidscratching your newairplane,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
aircraftand toprotect thetable. Keepa couple
of jars or bowls handy to hold the small parts
after you open the bag.
Pleasetrialfitalltheparts. Makesureyouhave
the correct parts and that they fit and are
alignedproperly beforegluing!Thiswillassure
proper assembly. YAK 54- EP ARF is hand
made from natural materials, every plane is
unique and minor adjustments may have to
be made. 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-
installedelevator halves.
SUGGESTION.
NOTE.

YAK 54-EP. INSTRUCTION MANUAL.
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SAFETY PRECAUTION.
Caution: this model is not a toy!
If you are a beginner to this type of powered
model,please askan experiencedmodelflyer
forhelp andsupport.Ifyouattempttooperate
themodel withoutknowingwhat 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
Evenifyou havealready built alarge number
ofRC modelspleaseread rightthrough 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: Blowwarm airoverthearea
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
bebuilt inavery shorttime.However, thework
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.
+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 motor if people are near.
Donot standinlinewiththesideof thepropel-
ler.
3) Turn the wing panel right side up. Using
a modeling knife, remove the covering at
possition show below.
1) Install the rubber grommets and brass
eyelets onto the aileron servo.
2) Install the metal connector onto servo
arm.
INSTALLING THE AILERON SERVOS.
Bottomofwing.

YAK 54-EP. INSTRUCTION MANUAL.
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Repeat the procedure for the other
wing half.
Servowire.
5) Attach the micro control connector to
the servo arms. Be sure to use the lock tie but
it could free rotation.
Temporary pin to
keep hinge centered.
Assemble then apply drops of thin
C/A to center of hinge,on both sides.
C/Aglue.
Cutthecovering
awayfromtheslot.
4) Install the aileron servo as same as
picture.
Remove the covering. Microcontrol
connector.
C/Aglue.

YAK 54-EP. INSTRUCTION MANUAL.
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Pen.
aileron control horn.
1) Using a ruler & pen to draw a straight
line as below picture.
INSTALLINGTHEAILERON CONTROLHORN.
INSTALLING THEAILERON CONTROLHORN.
Insert aileron control horn to the aileron.
C/Aglue.
C/Aglue.

YAK 54-EP. INSTRUCTION MANUAL.
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Repeat the procedure for the other
wing half.
Motor mount wood:
3*10mm
Cut.
C/Aglue.
C/Aglue.
INSTALLING ELECTRIC MOTOR.
See pictures below:

YAK 54-EP. INSTRUCTION MANUAL.
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1) Slide the cowl over the motor and line
up the back edge of the cowl with the marks
you made on the fuselage.
Push .
C/Aglue.
Rotor shaft.
Motor.
Front view.
COWLING.
3) Slide the cowl back over the motor.
2) While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwith thecrankshaft ofthe motor. 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.
3x10mm.

YAK 54-EP. INSTRUCTION MANUAL.
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1) Install the rubber grommets and brass
eyelets onto the rudder and elevator servo.
2) Install the metal connector onto servo
arm.
3) Using a modeling knife, remove the
covering at servo tray and at fuselage slot.
4) Drill1,6mm pilotholesthroughtheblock
of wood for each of the mounting screws
provided with the servo.
Secure the cowling.
Secure.
Machinescrews.
INSTALLING THE SPINNER.
2x10mm.
SERVO INSTALLATION.
Remove covering.

YAK 54-EP. INSTRUCTION MANUAL.
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Repeat the procedure for the other
servo.
1) Using a modeling knife, carefully re-
move the covering from over the vertical sta-
bilizermountingslot inthe topof thefuselage.
3) Slidethe stabilizerintoplace inthepre-
cut slot in the rear of the fuselage. The stabi-
lizer should be pushed firmly against the front
of the slot.
2) Draw a center line onto the horizontal
stabilizer. Then slide the horizontal into the
fuselage.
Remove covering.
HORIZONTAL STABILIZER
INSTALLATION.
Topside.
Pen. Bottomside.

YAK 54-EP. INSTRUCTION MANUAL.
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5) Remove thestabilizer. Usingthe lines
youjustdrew asa guide,carefully removethe
covering from between them using a model-
ingknife.
When cutting through the covering to re-
moveit, cutwithonly enoughpressure toonly
cut through the covering itself. Cutting into
the balsa structure may weaken it.
4) With the stabilizer held firmly in place,
use a pen and draw lines onto the stabilizer
where it and the fuselage sides meet. Do this
on both the right and left sides and top and
bottom of the stabilizer.
C/Aglue.
C/Aglue.
Push
Bottomelevator
Topelevator
Remove covering.