Black Horse Model YAK 54 Owner's manual

INSTRUCTIONMANUALBOOK



RecommendedR.C:4channelwith

4-5 servos.



Propeller : 13 x 6.



Speed Control: 60A.



ElectricMotor: AXI 2826.10.



Battery:4-5Cells-Li-Poly-14.8-18.5v- 5.000mAh-20c.

SPECIFICATION

MadeinVietnam.



Wingspan : 144cm. 56.69in.



Length : 125cm. 49.21in.



Weight : 2.4kg. 5.28lbs.

PartsListingrequired(not included).



Glow Engine : 40-46 cu.in. 2 stroke.

or 52 cu.in. 4 stroke.

YAK 54. 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. 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.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.....

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 ARF is hand made

from natural materials, every plane is unique

andminor adjustmentsmayhave tobe 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. INSTRUCTION MANUAL

+ 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.

+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 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.

 1. Install the rubber grommets and brass

eyelets onto the aileron servo.

INSTALLING THE AILERON SERVOS.

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.

SAFETY PRECAUTION.

YAK 54. Instruction Manual

Repeat the procedure for the other wing

half.

5. 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.

4.Drill1,5mm pilotholes through theblock

of wood for each of the four mounting screws

providedwiththeservo.Installservointoaileron

servo tray as same as picture below.

 2. Using a modeling knife, remove the

covering at possition show below.

3. 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.

Remove the

covering.

Bottom of wing.

Electric wire.

Thread.

Secure

YAK 54. INSTRUCTION MANUAL

 2. Drillthrough 6mm(diameter) theaileron

using the control horn as a guide and screw

the control horn in place.

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

line as below picture.

3. Install aileron control horn as same as

picture below.

C/Aglue.

INSTALLING THEAILERON CONTROLHORN.

ControlhornofAileron

Nilon control clasp.

M3locknut.

3x40mm.

YAK 54. Instruction Manual

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

andcentertheservo.Installthe servoarmonto

the servo. The servo arm should be

perpendicular to the servo and point toward

the middle of the wing.

AileronControlhorn

C/Aglue

Control horn.

C/Aglue.

INSTALLING THE AILERON

LINKAGES.

YAK 54. INSTRUCTION MANUAL

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

outfromthecenterofthe armtoaccommodate

the aileron pushrod wire.

5.Usingpliers,carefullymake a90 degree

bend down at the mark made. Cut off the

excess wire, leaving about 4mm beyond the

bend.

Bend.

Cut.

Snapkeeper. M2 locknut.

M2clevis.

6.Insertthe 90degree bend down through

the hole in the servo arm. Install one nylon

snap keeper over the wire to secure it to the

arm. Installthe servoarm retainingscrew and

remove the masking tape from the aileron.

Repeat the procedure for the other wing

half.

finishing.

Top side.

YAK 54. Instruction Manual

INSTALLING THE ENGINE MOUNT.

THERE ARE TWO OPTIONS:

1. ELECTRIC MOTOR

2. ENGINE MOUNT.

1. OPTION 1: ENGINE MOUNT.

Cut

C/Aglue.

Engine mount.

4x25mm.

3x20mm.

YAK 54. INSTRUCTION MANUAL

INSTALLING THE STOPPER ASSEMBLY

1.Thestopper hasbeen pre-assembledat

the factory.

2.Using amodeling knife,cut onelength of

siliconfuelline (thelength ofsilicon fuellineis

calculated by how the weighted clunk should

restabout 8mmaway fromtherearofthetank

andmove freelyinside thetank). Connectone

end of the line to the weighted clunk and the

other end to the nylon pick up tube in the

stopper.

3.Carefully bendthesecondnylontube up

ata 45degreeangle (usingacigarettelighter).

This tube will be the vent tube to the muffler.

4.Carefully bendthethirdnylontube down

ata 45degreeangle (usingacigarettelighter).

This tubewill bevent tubeto thefuelingvalve.

FUEL TANK. When the stopper assembly is installed

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.

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. Ifflashing is present, make

sure none of it falls into the tank.

6. When satisfied with the alignment of the

stopper assembly tighten the 3mm x 20mm

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.

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,the frontofthetankshould justabout

touch the back of the firewall.

Vent tube Fuel pick- up tube

Fuelfilltube

YAK 54. Instruction Manual

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.

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, whereit exitsthefuselagebehindthe

enginemountingbox andtotherearofthetank

at the forward bulkhead.

Fueltank.

Epoxyglue.

Fuel tank tray

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