Black Horse Model L-39 Albatros Owner's manual

Instruction Manual book
SPECIFICATION
MadeinVietnam.
ITEM CODE:BH 141


Wingspan:1,450mm(57,09 in).


Length:1,860mm(73,23in).


Flyingweight:4.6-4.9 kg(10.12-10.78lbs).


Wingarea: 43 dm2.


Wingloading: 113 g/dm2.


Wingtype: Nacaairfoils.


Geartype: Electricretractgear.
Size:(73.5 x44 x28)mm (notincluded).
CNCSuspensionMetalStruts(included).
Parts listing required (not included)


Radio:08 channels.


Servo:08 standardhightorqueservos.
Size:(29 x13x 30)mm.


EDF:DS51 -AXI- HDS90mm 10Blade Impeller.
Motor:HET700- 68-1200KV.


Battery:2 Packs* 5Cells LIPO37V-5,000mAh55c.
Or EDF: 90mm MIDI-FANEVO/HET650-68-1500KV.


Battery:8SLIPO29,6V 6,000mAh.


Speedcontrol: 120A.
Recommended EDF and Battery set up (not included)


EDF: 90mm,Minimum thrust4 kg.Midi-fanevo/
HET650-68-1150WeMoTec.


Lipocell:10cells/5000mAh55C.


ESC:100-120APhoenixCastle.

2
L-39 ALBATROS Item code: BH141 . Instruction Manual
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyourL-39ALBATROS.Usethepartslistingbelow
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/C flight. They will alsobeable
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
Landinggear.....
Toavoid scratching your newairplane, donot
unwrap the pieces until they are needed for
assembly. Cover your workbench with an old
towel or brown paper, both to protect the air-
craftand to protectthe table.Keepa coupleof
jars or bowls handy to hold the small parts af-
ter you open the bag.
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-
installedelevatorhalves.
SUGGESTION.
NOTE.
Pleasetrialfitalltheparts.Makesureyouhave
the correct parts and that they fit and are
alignedproperlybefore gluing! Thiswillassure
proper assembly.L-39 ALBATROS ARF is
handmadefromnaturalmaterials,every plane
is unique and minor adjustments may have to
be made. However, you should find the fit su-
perior 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:paintthinner,C/Aglueaccelerator, C/Aglue
debonderandacetone.Donotletthesechemi-
cals come in contact with the colors on the
covering and the plastic parts.

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L-39 ALBATROS Item code: BH141 . Instruction Manual
Caution:
this model is not a toy!
Ifyou area beginnerto thistype ofpowered model, please ask an experienced modelflyer 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! 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 work which
youhave tocarry outis importantand mustbe donecarefully.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.
+ This is not a toy
+ Be sure that no other flyers are using your radio frequency.
+ Wear safety glasses.
+ The glow plug clip must be securely attached to the glow plug.
+ Do not start the EDF if people are near.

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L-39 ALBATROS Item code: BH141 . Instruction Manual
REPLACEMENT LARGE PARTS
REPLACEMENT SMALL PARTS
5.wirecable(nose gear)
3.Plastic parts of tail fuselage.
1.Oleo struts retracts.
2.Oleostrutsretractnosegear. 4.Plywood of nose gear
F. Cacbon tube Horizontal stabilizer.
B. Wing panel (B1,B2).
A.Fuselage.
C. Horizontal stabilizer(D1,D2).
D. Vertical stabilizer.
E.Aluminium tube wing dihedral brace. G. Decal sheet.
K.Pilot

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L-39 ALBATROS Item code: BH141 . Instruction Manual
1) Install the rubber grommets and brass
eyelets onto the aileron servos.
I. AILERON.
1.INSTALLING THE AILERON SERVOS.
2)Using a modelingknife,remove thecov-
ering 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, re-
move the masking tape and the servo lead
from the thread.
4)Drill 1,6mm pilotholes throughtheblock
of wood for each of the four mounting screws
provided with the servo.
Servotray.
Secure.
thread
Electric
wire.
Bottom side.
Aileron
Flap
Remove
covering
Servotray.
Servotray.

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L-39 ALBATROS Item code: BH141 . Instruction Manual
Repeat the procedure for the other wing
half.
Aileroncontrolhorn
Repeat the procedure for the other wing
half.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
Installing the aileron linkages as pictures
below.
INSTALLINGTHEAILERON CONTROLHORN.
Secure.
A+B Epoxy
PLUS glue
Aileron
control horn
INSTALLING THE AILERON
LINKAGES.
60 mm.
M2
Bottom side
Aileron.
2x10mm.

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L-39 ALBATROS Item code: BH141 . Instruction Manual
II. FLAP
1.INSTALLING THE FLAP SERVO
2x10mm.
Secure
Electric
wire.
Repeat the procedure for the other wing
half.
Installflapcontrol hornassame as
picturebelow.
ControlhornFlap.
2.INSTALLING THE FLAP
CONTROL HORN.
thread
Electric
wire.
servo tray.
Flap.

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L-39 ALBATROS Item code: BH141 . Instruction Manual
Installing the flap linkages as pictures
below.
3.INSTALLING THE FLAP
LINKAGES.
A+B Epoxy
PLUS glue
Control horn
of the flap.
60 mm.
M2
Repeat the procedure for the other wing
half.
Bottom side.
Flap.
Aileron.
PARTSREQUIRED
Electric retract
(notincluded)
(Electric
Not Included.)
3x15mm.
Onlyincludingoleostruts.
INSTALLING ELECTRIC GEAR
RETRACTS.

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L-39 ALBATROS Item code: BH141 . Instruction Manual
3x15mm
Secure.
Secure.
Repeat the procedure for the other gear.
4x12mm
Bottom side
Seepicturesbelow:
(Notincluded)
INSTALLINGELECTRICEDF-90MM.

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L-39 ALBATROS Item code: BH141 . Instruction Manual
Open
Bottom side
3x 12mm
Secure.
.Plastic parts of tail fuselage.