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.

YAK 54-EP. INSTRUCTION MANUAL.

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.

+ This is not a toy

+ Be sure that no other flyers are using your

radio frequency.

+Theglowplug clipmustbesecurely attached

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.

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,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,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.

YAK 54-EP. INSTRUCTION MANUAL.

4) Install the aileron servo as same as

picture.

Repeat the procedure for the other

wing half.

Servowire.

C/Aglue.

Micro control connector.

INSTALLING THE AILERON SERVOS.

 1) Install the rubber grommets and brass

eyelets onto the aileron servo.

2) Install the metal connector onto servo

arm.

3) Turn the wing panel right side up. Using

a modeling knife, remove the covering at

possition show below.

Bottomofwing.

Remove the covering.

YAK 54-EP. INSTRUCTION MANUAL.

Pen.

5) Attach the micro control connector to

the servo arms. Be sure to use the lock tie but

it could free rotation.

aileron control horn.

C/Aglue.

1) Using a ruler & pen to draw a straight

line as below picture.

INSTALLINGTHEAILERONCONTROLHORN.

YAK 54-EP. INSTRUCTION MANUAL.

C/Aglue.

Insert aileron control horn to the aileron.

Cut.

C/Aglue.

YAK 54-EP. INSTRUCTION MANUAL.

C/Aglue.

Rotor shaft.

Front view.

COWLING.

1) Slide the cowl over the motor and line

up the back edge of the cowl with the marks

you made on the fuselage.

Repeat the procedure for the other

wing half.

INSTALLING ELECTRIC MOTOR.

See pictures below:

Push .

Motor.

Motor mount wood:

3*10mm

YAK 54-EP. INSTRUCTION MANUAL.

3x10mm.

Secure.

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 thecrankshaftofthe 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.

Secure the cowling.

Machinescrews.

INSTALLING THE SPINNER.

2x10mm.

YAK 54-EP. INSTRUCTION MANUAL.

SERVO INSTALLATION.

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 pilotholes throughtheblock

of wood for each of the mounting screws

provided with the servo.

Remove covering.

Repeat the procedure for the other

servo.HORIZONTAL STABILIZER

INSTALLATION.

 1) Using a modeling knife, carefully re-

move the covering from over the vertical sta-

bilizermountingslot inthe topof thefuselage.

Remove covering.

 3) Slidethestabilizerintoplace 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.

YAK 54-EP. INSTRUCTION MANUAL.

5) Removethe stabilizer. Usingthelines

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.

Pen.

Remove covering.

Bottomside.

Bottomelevator

Topelevator

Topside.

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