Black Horce Model ZLIN 50LS Owner's manual

SPECIFICATION
MadeinVietnam.


Wingspan : 2,145 mm 84.45 inches.


Length : 1,641mm 64.61 inches.
Partslistingrequired(notincluded)


Weight : 5.7 kg 12.54 lbs.


Radio : 5 channels.


Servo : 8 servos.


GlowEngine: O.S.GT22(DEL30cc gas.)
Instruction Manual book
ITEM CODE:BH103.

ZLIN 50LS - Item code: BH103.Instruction Manual
2
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour ZLIN50LS.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
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.....
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
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
properassembly. ZLIN50LSARFishandmade
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.

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ZLIN 50LS - Item code: BH103.Instruction Manual
Caution: this model is not a toy!
Ifyouare abeginner tothis typeofpowered model,please askan experiencedmodelflyer forhelp
and support. If you attempt to operate the model without knowing what you are doing 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
Even if you have already built a large number of RC models 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: Blow warm air over 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!donot heatthe film morethan isabsolutely necessary. Iftheair orthe ironistoo hot,the
film may melt and holes may be formed.
Thismodelis highlypre-fabricated andcanbe builtin averyshort time.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.
+ Do not smoke near fuel
+ Store fuel in a cool, dry place, away from children and pets.
+ Wear safety glasses.
+The glow plug clip must be securely attached to the glow plug.
+ Do not flip the propeller with your fingers.
+ Keep loose clothing and wires away from the propeller.
+ Do not start the engine if people are near. Do not stand in line with the side of the propeller.
+Makeengine adjustmentsfrombehindthe propelleronly.Donotreacharoundthespinningpropeler.
SAFETY PRECAUTION.
G. Decal sheet .
F2.Aluminium tube Horizon stabilizer.
A.Cowling.
B. Wing panel.
C.Fuselage
D. Horizon stabilizer.
E. Rudder
F1.Aluminium tube wing K. Pilot .
G.

ZLIN 50LS - Item code: BH103.Instruction Manual
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7. Wheels.
2. Wheel pants(Right & Left)
1. Aluminium landing gear (Right & Left)
6. Plastic parts for rudder pushrod.
4.Spinner.
 1. Install the rubber grommets and brass
eyelets onto the aileron servo.
INSTALLING THE AILERON SERVOS.
9.Engine mount ply of wood .
I. INSTALLING THE AILERON-FLAP
SERVO
REPLACEMENT SMALL PARTS
3. Tail gear set.
5. Fuel Tank.
4) Install the aileron servo as same as pic-
ture.
3.Drill1,5mm pilotholes through 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.
2. 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.
Flap. Aileron.
Bottom side.
Bottom side.
Thread
Electricwire
8. Plastic - enginemount.

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ZLIN 50LS - Item code: BH103.Instruction Manual
Repeat the procedure for the other wing
half.
INSTALLINGTHEAILERON CONTROLHORN
.
Installaileron controlhornas sameas
picturebelow.
A+B Epoxy
PLUS glue
AB
A+B Epoxy
PLUS glue
Repeat the procedure for the other wing
half.
INSTALLING THE AILERON
LINKAGES.
Installing the aileron linkages as pictures
below.
AileronControl
horn.
80mm 3x10mm
3x10mm
Secure.
Repeat the procedure for the other wing
half.
Bottom side
Aileron.

ZLIN 50LS - Item code: BH103.Instruction Manual
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INSTALLING THE FLAP CONTROL HORN.
Repeat the procedure for the other wing
half.
INSTALLING THE FLAP SERVO.
A+B Epoxy
PLUS glue
Control horn of
theflap.
Installing the flap linkages as pictures
below.
3. INSTALLING THE FLAP
LINKAGES.
80mm 3x10mm
3x10mm
Secure.
Flap.
Thread
Electric wire
Flap

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ZLIN 50LS - Item code: BH103.Instruction Manual
4x12mm
Secure
Bottom side
Flap. aileron
Repeat the procedure for the other wing
half.
THERE ARE TWO OPTIONS:
OPTION 1: ENGINE MOUNT.
See pictures below:
INSTALLING THE ENGINE.
Secure
4X30mm
4X30mm
150mm

ZLIN 50LS - Item code: BH103.Instruction Manual
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Drilla hole
4mmdiameter.
Secure
Left side.
Rightside.
Top side.
OPTION 2: ENGINE MOUNT.
See pictures below:
Drilla hole
6mmdiameter.
INSTALLING THE ENGINE.

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ZLIN 50LS - Item code: BH103.Instruction Manual
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 CABLE.
Secure.
Throttle servo
Throttle servo
Secure.
Cut.
Throttle
Pushrod.

ZLIN 50LS - Item code: BH103.Instruction Manual
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INSTALLING THE STOPPER ASSEMBLY
FUEL TANK.
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
otherend tothenylonpickuptubein thestop-
per.
3.Carefully bendthesecondnylontubeup
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.
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.
Tygon gas tubing not included.
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.
Secure.
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 ex-
pandsand sealsthetank opening.Do notover
tighten the assembly as this could cause the
tank to split.
Vent tube Fuel pick- up tube
Fuelfilltube

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ZLIN 50LS - Item code: BH103.Instruction Manual
Fueltank.
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 exitsthefuselage behindthe
enginemountingbox andtotherearofthetank
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.
2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwiththecrankshaftoftheengine. 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.
Bottom side.
Left side
3. Slide the cowl back over the engine
andsecure itin placeusing fourwood screws.
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.
1. Slide the fiberglass cowl over the en-
gineand lineup thebackedgeofthe cowlwith
the marks you made on the fuselage.
COWLING.
Top side

ZLIN 50LS - Item code: BH103.Instruction Manual
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Bottom side.
Trim and cut
3 x 12mm
Left side.
Machine screw.
Front view.
Secure.
Secure.
1. Install the rubber grommets and brass
collets into the elevator servo. Test fit the
servo into the servo tray.
2. Mount the servo to the tray using the
mounting screws provided with your radio
system.
Elevator servo
INSTALLING THE ELEVATOR
SERVO.
Installthe spinnerbackplate,propellerand
spinner cone. The spinner cone is held in
placeusing two3mm x8mm machinescrews.
INSTALLING THE SPINNER.

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ZLIN 50LS - Item code: BH103.Instruction Manual
Aluminum tube 8mm
197mm
Elevatorservo
Elevatorservo
Horizontalstabilizer installation .
See picture below.
Bottom side
HORIZONTAL STABILIZER
INSTALLATION.
Bottomside
Right side.
Left side.

ZLIN 50LS - Item code: BH103.Instruction Manual
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3 x 15mm
Bottom side.
Secure.
Secure.
Elevator control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
Control horn of elevator.
ELEVATOR CONTROL HORN INSTALLA-
TION.
A+BEpoxyPLUS
glue.
Elevatorcontrol
horn.
 Elevatorpushrod installas sameas theway
of aileron pushrod.
3x10mm M2 lock nut.
ELEVATOR PUSHROD INSTALLATION.

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ZLIN 50LS - Item code: BH103.Instruction Manual
Secure.
Elevator
pushrod
Bottom side
Elevator
pushrod
Cut
HORIZONTAL STABILIZER STRUTS.
3x 15mm

ZLIN 50LS - Item code: BH103.Instruction Manual
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Bottom side.
Rudder servo install as same as method of
elevator servo. See picture below:
VERTICAL INSTALLATION.
Rudder servo
Rudder servo
Secure.
Secure.

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ZLIN 50LS - Item code: BH103.Instruction Manual
Top side.
Aluminium
Rudder control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
ControlhornofRudder.
RUDDER CONTROL HORN INSTALLA-
TION.
Bottom side
Topside.
A+B Epoxy
PLUSglue.
Cut

ZLIN 50LS - Item code: BH103.Instruction Manual
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Bottom side
Rudder cable
Rudder cable
Rudder
pushrod. Rudder
pushrod.
MOUNTING THE TAIL WHEEL
BRACKET.
3x12mm
3x15mm
Drilla hole
3mmdiameter.
A+B Epoxy
PLUS Glue.
RUDDER CABLE INSTALLATION.
Rudderpush-pullsysteminstallassams
aspicturebelow
3x10mm
Secure.
Rudder
control horn

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ZLIN 50LS - Item code: BH103.Instruction Manual
Bottom side
Secure.
Secure.
Plastic parts of elevator
pushrod.
C/Aglue

ZLIN 50LS - Item code: BH103.Instruction Manual
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Bottom side
Top side
1)Assembleand mountingthewheelpants
as shown in the following pictures.
PARTSREQUIRED
MAIN GEAR INSTALATION.
a.b.
Markpoint
Secure.
Secure.