Black Horse Model PZL-104 WILGA BH 124 Owner's manual

Instruction Manual book
Made in Vietnam.
SPECIFICATION


Wingspan : 2,240 mm 88.19 in.


Length : 1,625 mm 63.98 in.


Weight : 6,4 kg 14.08 lbs.
Parts listing required (not included).


Radio : 08 channels.


Servo : 09 standard high torque servos.


Engine : 26 - 35cc Gas.
ITEM CODE:BH 124

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PZL-104 Wilga - Item code: BH 124 . 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 PZL-104 WILGA. 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
proceduresdesignedtohelpthenewpilotonhiswaytosuccessfulR/Cflight.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.
Modelling knife.
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.
HARDWARE PACK
COWLING.
Landing gear.....
Toavoid scratching your new 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 air-
craft and to protect the table. Keep a 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
aligned properly before gluing! This will as-
sure proper assembly.PZL-104 WILGA 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 follow-
ing: 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-
installed rudder.
(1) Horizontal stabilizer with pre-
installed elevator halves.
SUGGESTION.
NOTE.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
Caution: this model is not a toy!
If you are a beginner to this type of powered
model,please ask anexperienced model flyer
forhelp and support. If you attempt to operate
themodel withoutknowing whatyouare 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
Evenif you have already built a large number
ofRC 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: Blowwarm airoverthe area
and rub down with a soft
cloth.
When self-tapping screws have to be
screwedinto 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 at-
tached 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 pro-
peller.
+ Make engine adjustments from behind the
propeller only. Do not reach around the spin-
ning propeller.
SAFETY PRECAUTION.
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
be built in a very short time. However, the
workwhich 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.
REPLACEMENT LARGE PARTS
E. G.
A.
B1.
D2.
C.
B2.
D1.
F.
A. Cowling.
B. Wing panel.
C. Fuselage.
D. Horizontal stabilizer.
E.Rudder.
G. Decal sheet .
F.Aluminium wing dihedral brace.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
 1. Install the rubber grommets and brass
eyelets onto the aileron servo.
 2.Using a modeling knife, remove thecov-
ering servo tray.
REPLACEMENT SMALL PARTS
1. Aluminium landing gear.
2. Plastic parts for landing gear.
4. Pilot doll.
3. Chairs
8. Plastic parts bottom fuselage.
7. Tail gear set.
10. Plastic parts for vertical
9. Fuel Tank.
5. Wheels.
6. Landing gear struts
b.
a.
1
5.
d. c.
a.
9.
a.
c.
b.
2.
b.
6.
10.
8.
7.
3.
B. A
4.
a
ba
b
c
Bottom side
Aileron
Flap.
Servo tray.
Remove covering
1.INSTALLING THE AILERON SERVO.
I. SERVO

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
3.Drill1,5mm pilot holes through the block
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.
 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, re-
move the masking tape and the servo lead
from the thread.
Secure.
Thread.
Electric
wire.
Servo tray.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
2x10mm.
Secure.
Repeat the procedure for the other wing
half.
Aileroncontrolhorn
Installaileroncontrolhornassame
as picture below.
2.INSTALLING THE AILERON CONTROL
HORN.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
A+B Epoxy
PLUS
Installing the aileron linkages as pictures
below.
1. INSTALLING THE FLAP SERVO .
II. FLAP
Control horn
of the aileron
Attach the clevis to the outer hole in the con-
trol horn.
3.INSTALLING THE AILERON
LINKAGES .
M3. 65 mm M3.
M3 lock nut.
2x10mm.
Thread
Electric
wire
A+B Epoxy
PLUS
Flap.
Flap.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
Secure.
2. INSTALLING THE FLAP CONTROL HORN.
Repeat the procedure for the other wing
half.
Control horn of the flap
Installing the flap linkages as pictures
below.
A+B Epoxy
PLUS
Flap.
Top side
AileronFlap
Bottom side
M3. 65mm M3.
M3 lock nut.
3.INSTALLING THE FLAP
LINKAGES.
Control horn
of the flap

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
Repeat the procedure for the other wing
half.
See pictures below:
5x 90mm
INSTALLING THE ENGINE MOUNT.
Drill a hole
6 mm diam-
eter
Secure.
Engine 30cc.
4x12mm.
Secure

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PZL-104 Wilga - Item code: BH 124 . 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 connec-
tor from loosening during flight.
INSTALLING THE THROTTLE - CABLE.
Throttle servo
Throttle servo
INSTALLING THE STOPPERASSEMBLY
1) The stopper has been pre-assembled
at the factory.
2) Using a modeling knife, cut one length
of silicon fuel line (the length of silicon fuel
line is calculated by how the weighted clunk
should rest about 8mm away from the rear of
the tank and move freely inside the tank).
Connect one
end of the line to the weighted clunk and the
otherend to the nylon pick up tube in the stop-
per.
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) Carefullybend thethird nylontubedown
ata 45degreeangle (usinga cigarette lighter).
This tubewill be venttubeto the fueling valve.
Throttle - cable
FUEL TANK.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
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. If flashing is present, make
sure none of it falls into the tank.
Tygon gas tubing not included.
Vent tube Fuel pick- up tube
Fuel fill tube
6. When satisfied with the alignment of the
stopper assembly tighten the 3mm x 20mm
machine screw until the rubber stopper ex-
pandsandseals the tankopening.Do notover
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 frontofthe tankshould just about
touch the back of the firewall.
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
through easily.
9. To secure the fuel tank in place, apply a
bead of silicon sealer to the forward area of
the tank, where it exits the fuselage behind
the engine mounting box and to the rear of
the tank at the forward bulkhead.
Secure.
Fuel tank.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
Leftside.
Choke servo
INSTALATION CHOKE SERVO.
Choke servo
connector
Secure.
Tie wrap
Electric power.
Right side.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
PARTS REQUIRED
MAIN GEAR INSTALATION.
1)Assembleandmountingthewheelpants
as shown in the following pictures.
4x 15mm
C/Aglue.
Secure.
1. 2a
2b. 2b.
5.
1.
5.
6a.
6b.
6c.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
Secure.
3x 8mm
3x 8mm
3x 10mm
3x10mm
Landing gear struts.
3x25mm
16mm
Aluminium 10mm

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
3x 10mm
Secure.
3x 25mm
Secure.
5x 40mm
Bottom side.
Bottom side.
Secure.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
10mm.
30mm.
Mark line
Cut.
Straight line.
5mm
cut.
cut.
Push in to.
Push.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
20mm
5mm
Mark point 1
Mark point
30mm
5mm
Mark
point 2
Drill a hole
2.5mm diameter
Make a tero hole drill
3mm diameter.
Drill a hole
2.5mm diameter

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
Secure.
Secure.
3x 6mm
Make a tero hole
drill 3mm diameter.
Front view.
Repeat the procedure for the behind
side right landing gear
Repeat the procedure for all left side
landing gear
Plastic part bottom fuselage.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
1. Slide the fiberglass cowl over the en-
gine and line up the back edge of the cowl
with the marks you made on the fuselage.
2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowl withthe crankshaftof theengine. 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.
COWLING.
Top side.
C/A glue.
Bottom side
Trim and
cut.
Bottom side.

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
Bottom side.
Mark point
Drill a hole
2.5mm diameter
Top
side.
3 x 12mm
Secure.
4. Install the muffler and muffler exten-
sion onto the engine and make the cutout in
the cowl for muffler clearance. Connect the
fuel and pressure lines to the carburetor, muf-
fler and fuel filler valve.
3. Slide the cowl back over the engine
andsecure it in place using three screws. See
picture below.
Machine screw.
Front view

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PZL-104 Wilga - Item code: BH 124 . Instruction Manual
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.
Secure.
Elevator servo
SERVO INSTALLATION
ELEVATOR INSTALLATION
HORIZONTAL STABILIZER.
Horizontal stabilizer installation
See picture below.
Elevator servo