Black Horse BH26 Owner's manual

Instruction Manual book


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 : 1,650mm. 65 in.


Length : 1,260cm. 49.6 in.


Weight : 2.5kg. 5.5lbs.
PartsListingrequired(not included).


Glow Engine : 40-46 cu.in. 2 stroke.
or 52 cu.in. 4 stroke.
Itemcode:BH26

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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This instruction manual is designed to help you build a great flying aeroplane. Please read this
manual thoroughly before starting assembly of your DECATHLON. 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.
If you are inexperienced with basic R/C flight we strongly recommend you contact your R/C
supplierandjoinyourlocalR/CModelFlyingClub.R/CModelFlyingClubsofferavarietyoftraining
proceduresdesignedtohelpthenewpilotonhiswaytosuccessfulR/Cflight.They willalsobe able
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 avoid 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
aircraftand toprotectthetable.Keepacouple
of jars or bowls handy to hold the small parts
after you open the bag.
Please trial fit all the parts. Make sure you
havethecorrect partsand thatthey fitandare
alignedproperly beforegluing! Thiswillassure
proper assembly. DECATHLON 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 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
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.

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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+ 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 glowplugclipmustbesecurelyattached
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.
SAFETY PRECAUTION.
C/Aglue
1. Install the rubber grommets and brass
eyelets onto the aileron servo.
INSTALLING THEAILERON SERVOS.
2. Usingamodeling knife,removethe cov-
ering at possition show below.
C/Aglue
C/Aglue

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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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, re-
move the masking tape and the servo lead
from the thread.
4.Drill1,5mm pilotholesthrough 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.
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.
Repeat the procedure for the other wing
half.
1. Using a ruler & pen to draw a straight
line as below picture.
INSTALLING THEAILERON CONTROLHORN.
3x40mm.
Nilon control clasp.
M3locknut.
Electric wire.
Thread.
Remove the covering.
Thread.
Bottom of wing.
Remove the covering.

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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2. Drill through 6mm (diameter) the ai-
leron using the control horn as a guide and
screw the control horn in place.
3. Install aileron control horn as same as
picture below.
Bottom of wing.
4. Install control horn as same as picture
below.
C/Aglue

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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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
outfromthecenterofthearmto accommodate
the aileron pushrod wire.
 5. Using pliers, carefully make a 90 de-
greebenddown atthe markmade.Cut offthe
excess wire, leaving about 4mm beyond the
bend.
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 servoarmretainingscrewand
remove the masking tape from the aileron.
2. Attach the clevis to the outer hole in the
control horn.
3. Plug the aileron servo into the receiver
andcentertheservo.Installtheservoarmonto
the servo. The servo arm should be
perpendicular to the servo and point toward
the middle of the wing.
Bend and cur after
M2locknut.
M2clevis. Snapkeeper.
C/Aglue
Bottom of wing.
Top of wing.
Controlhorn.
Repeat the procedure for the other wing
half.
1. Working with the aileron linkage for
now, thread one clevis onto one of the
threaded wires.
INSTALLING THE AILERON
LINKAGES.

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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Aluminium brace.
C/Aglue
Epoxyglue.
Repeat the procedure for the other wing
half.
JOINING THE WING HALVES.
1. Locate the aluminium wing dihedral
brace.
 2. Test fit the dihedral brace into each
wing half. The brace should slide in easily.
Secure
wingtip
Remark point and remove
the covering
wingtip

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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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.
Vent tube Fuel pick- up tube
Fuelfilltube
See pictures below
INSTALLING THE STOPPER ASSEMBLY
1.The stopper has been pre-assembled at
the factory.
2.Using amodeling knife,cut onelength of
siliconfuelline (thelength ofsiliconfuel lineis
calculated by how the weighted clunk should
restabout8mmawayfrom therear ofthe tank
andmove freelyinsidethetank).Connectone
end of the line to the weighted clunk and the
otherendtothenylon pickup tubein thestop-
per.
3.Carefully bendthesecondnylontubeup
ata 45degreeangle(usinga cigarettelighter).
This tube will be the vent tube to the muffler.
4.Carefullybendthethirdnylontubedown
ata 45degreeangle(usinga cigarettelighter).
This tubewill bevent tubeto thefueling valve.
FUEL TANK.
INSTALLING THE ENGINE MOUNT.
1. OPTION 1: ENGINE MOUNT.
THERE ARE TWO OPTIONS:
1.ENGINE MOUNT.
2.ELECTRIC MOTOR.

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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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.
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 exitsthe fuselagebehindthe
enginemountingboxandtothe rearofthe tank
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.
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 frontof thetankshouldjustabout
touch the back of the firewall.
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.
Fueltank.
Rubber band

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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Throttle wire.
Secure
Locate the long piece of wire used for the
throttlepushrod. Oneend ofthewirehasbeen
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armoftheenginewhenthe engineisfittedonto
theenginemount.Fitthe engineto theengine
mount using the screws provided.
INSTALLING THE ENGINE-THROTTLE.
3mm X 20mm.
Drill2mmhole
Mark point
108mm
108mm

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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Bottom side
Trim and cut.


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.
Right side
Preview
Machine screw.


2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowl withthecrankshaft oftheengine. 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.


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
andfuelfiller valve.


3. Slide the cowl back over the engine
andsecureitinplaceusingfour woodscrews.
See picture below.
INSTALLING THE COWLING
3 x 10mm

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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C/Aglue
Secure
2. OPTION 2: ELECTRIC MOTOR
3 X 15mm.
3 X 15mm.
INSTALLING ELECTRIC MOTOR.
Install the spinner backplate, propeller
andspinnercone. The spinnercone isheld in
place using two 3mm x 12mm wood screws.
INSTALLING THE SPINNER.
Epoxyglue

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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Secure
Rotor sharft.
Motor
Remove covering
Rubber bend

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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1. Install the rubber grommets and brass
colletsintotheelevatorservo.Test fittheservo
into the servo tray.
2. Mount the servo to the tray using the
mountingscrews providedwith yourradiosys-
tem.
ELEVATOR INSTALLATION.
SERVO INSTALLATION.
INSTALLING THE COWLING

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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 1. Using a modeling knife, carefully re-
move the covering at the mounting slot of
horizontal stabilizer(bothside offuselage).
Center line.
Top elevator.


2) Using a ruler and a pen, locate the
centerlineofthehorizontalstabilizer,atthetrail-
ingedge, andplace amark.Useatraingle and
extend this mark, from back to front, across
the top of the stabilizer.Also extend this mark
downtheback ofthe trailingedge ofthestabi-
lizer .
HORIZONTALSTABILIZER INSTALLATION.
Remove covering.
3. Slidethe stabilizerintoplace intheprecut
slot in the rear of the fuselage.The stabilizer
should be pushed firmly against the front of
the slot.
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.

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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 6. When you are sure that everything is
aligned correctly, mix up a generous amount
of 30 minute epoxy. Apply a thin layer to the
topandbottomofthe stabilizermounting area
and to the stabilizer mounting platform sides
inthe fuselage.Slidethe stabilizerinplaceand
re-align. Double check all of your measure-
ments one more time before the epoxy cures.
Holdthe stabilizer inplacewithT-pinsormask-
ing tape and remove any excess epoxy using
a paper towel and rubbing alcohol.
Bottomelevator
Top elevator.
Remove covering
Epoxy glue
C/Aglue
7. After the epoxy has fully cured, re-
move the masking tape or T-pins used to
hold the stabilizer in place and carefully in-
specttheglue joints. Use more epoxy to fill
in any gaps that may exits that were not
filled previously and clean up the excess us-
ing a paper towel and rubbing alcohol.
5. Remove the stabilizer. Using the lines
youjustdrew asa guide,carefully removethe
coveringfrom betweenthem usinga modeling
knife.
When cutting through the covering to remove
it, cut with only enough pressure to only cut
through the covering it’s self. Cutting into the
balsastructure mayweaken it.This couldlead
to possible failure during flight
Bottom side
Markline
Top side

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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Elevator control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
Controlhornofelevator.
ELEVATOR CONTROL HORN INSTALLA-
TION.
3mm x 40mm.
M3 lock nut.
Nilon
control clasp.
C/Aglue
Drill a hole with 6 mm diameter.
Elevator control horn.
Markpoint

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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Elevator
control horn
Elevator
control horn
 Elevatorpushrod installassameastheway
of aileron pushrod.
ELEVATOR PUSHROD INSTALLATION.
Elevator
pushrod. Elevator
pushrod.
Secure
C/Aglue

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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Bend and cut after
Snap keeper.
VERTICAL INSTALLATION.
Rudder pushrod
Elevator pushrod
Hinge.

DECATHLON-Item code:BH26. INSTRUCTION MANUAL
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3. While holding the vertical stabilizer
firmly in place, use a pen and draw a line on
each side of the vertical stabilizer where it
meets the top of the fuselage.
Pen.
Hingeslot.
Remove covering
1. Using a modeling knife, remove the
covering from over the precut hinge slot cut
intothe lowerrearportion ofthefuselage. This
slot accepts the lower rudder hinge.
2. Slidethe verticalstabilizer intotheslot
in the top of the fuselage. The rear edge of
thestabilizer shouldbe flushwiththerear edge
of the fuselage and the lower rudder hinge
should engage the precut hinge slot in the
lowerfuselage. Thebottom edgeof thestabi-
lizer should also be firmly pushed against the
top of the horizontal stabilizer.