Black Horse Model Blade BH 70 Owner's manual

Instruction Manual book


RecommendedR.C:4channelswith
4-5 servos.


Propeller : 13 x 6.


Speed Control: 60A.


ElectricMotor: AXI2826/10.


Battery:4-5Cells-Li-Poly-14.8-18.5v- 5.000mAh -20c.
SPECIFICATION
MadeinVietnam.


Wingspan : 1,580mm. 62.20 in.


Length : 1,255 mm. 49.41in.


Weight : 2.5kg. 5.50lbs.
PartsListingrequired(not included).


Radio : 4 channels.


Servo : 04 -05 servos.


Glow Engine : 46-55 cu.in. 2 stroke.

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour BLADE.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
proceduresdesignedtohelp thenewpilotonhis waytosuccessfulR/Cflight.They willalsobeable
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.....
Toavoidscratching yournew 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-
craftandtoprotect the table. Keep a coupleof
jars or bowls handy to hold the small parts af-
ter you open the bag.
Pleasetrialfitall theparts.Makesureyou have
the correct parts and that they fit and are
alignedproperlybeforegluing!Thiswillassure
proper assembly. BLADE ARF is hand made
from natural materials, every plane is unique
andminoradjustments may have to bemade.
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:paintthinner,C/Aglueaccelerator,C/Aglue
debonderandacetone.Donotletthesechemi-
cals 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-
installedelevatorhalves.
SUGGESTION.
NOTE.

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BLADE - ITEM CODE: BH70-A.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.
+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.
+ Make engine adjustments from behind the propeller only. Do not reach around the spinning
propeller.
SAFETY PRECAUTION.
REPLACEMENT LARGE PARTS
REPLACEMENT SMALL PARTS
G.
A.Cowling.
B. Wing panel(B1&B2).
C. Fuselage.
D . Horizontal stabilizer.
E. Vertical stabilizer
F. Aluminium wing dihedral brace.
G. Decal sheet.

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
 1. Install the rubber grommets and brass
eyelets onto the aileron servo.
Assemble then apply drops of thin
C/A to center of hinge,on both sides.
Bottom side
2.Using a modeling knife, remove the cov-
ering servo tray.
Bottom side
Remove
covering
INSTALLING THE AILERON SERVOS.
Temporary pin to
keep hinge centered.
Cutthe covering
awayfromthe slot.
7.Spinner.
3. Fuel Tank.
4.Tail gear
6. Wheels.
2.Wheel pants
1.Aluminium landing gear.
5.Electricmotorplyofwood(5a,5b).
8. Plastic - enginemount.
Bottom side
Aileron

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
3. Drill 1,5mm 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.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
Repeat the procedure for the other wing
half.
Secure
Secure
Electric wire
Thread
Drillahole
1.5mmdiameter.
Drill a hole
1.5mm diameter.
servo tray.
2 x 10 mm.

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
1. Using a ruler & pen to draw a straight
line as below picture.
INSTALLING THEAILERONCONTROLHORN.
Installaileroncontrolhornas same
aspicturebelow.
Controlhorn of Aileron
2x16mm.
Markline.
Markpoint.
2. Drill through 1.5mm (diameter) the ai-
leron using the control horn as a guide and
screw the control horn in place.
Drill a hole
1.5mm diameter
Secure
 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. Install a silicone tube on the
clevis.
INSTALLING THE AILERON
LINKAGES.
180mm
Snapkeeper.
3. Plug the aileron servo into the receiver
andcentertheservo. Installtheservoarmonto
the servo. The servo arm should be perpen-
dicular to the servo and point toward the mid-
dle of the wing.
Controlhorn
of Aileron

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BLADE - ITEM CODE: BH70-A.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
out from the center of the arm to accommo-
date the aileron pushrod wire.
5.Usingpliers, carefully makea 90 degree
bend down at the mark made. Cut off the ex-
cess wire, leaving about 4mm beyond the
bend.
6.Insert the90degree bend down through
the hole in the servo arm. Install one nylon
snap keeper over the wire to secure it to the
arm.Installtheservoarmretainingscrew and
remove the masking tape from the aileron.
Bend 90
degree
Cut.
Bottom side
4x12mm

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
THERE ARE TWO OPTIONS:
1. ELECTRIC MOTOR
2. ENGINE MOUNT.
1. OPTION 1: ELECTRIC MOTOR.
Repeat the procedure for the other wing
half.
Secure.
Bottom side
3 x 15mm 3x 15mm
C/Aglue
INSTALLING THE ENGINE MOUNT.
Epoxyglue
Secure

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
2. OPTION 2: ENGINE MOUNT.
4 x 25mm
Locate the long piece of wire used for the
throttlepushrod.Oneendofthewirehasbeen
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armofthe enginewhentheengineisfittedonto
theenginemount. Fit the engine to theengine
mount using the screws provided.
INSTALLING THE ENGINE.
Markpoint
3x20mm
secure.
Secure.
Rightside.
Drill a
hole 2.5mm
105mm

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
Pushrod wire
Left side.
Right side.
INSTALLING THE STOPPER ASSEMBLY
FUEL TANK.
1. The stopper has been pre-assembled at
the factory.
2.Usingamodelingknife,cutonelength of
siliconfuel line (the length of silicon fuel line is
calculated by how the weighted clunk should
restabout8mmaway from the rear of thetank
andmovefreelyinsidethetank). Connect one
end of the line to the weighted clunk and the
otherendto the nylon pick up tubeinthe stop-
per.
4.Carefullybendthethird nylon tube down
ata45degreeangle(usinga cigarette lighter).
This tubewillbeventtubetothefuelingvalve.
3.Carefullybendthesecond nylon tube up
ata45degreeangle(usinga cigarette lighter).
This tube will be the vent tube to the muffler.
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
amodelingknife. Ifflashing is present, make
sure none of it falls into the tank.
Silicon tube
not included.
Vent tube
Fuelfill tube
Fuel pick- up tube

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
Fueltank
6. When satisfied with the alignment of the
stopper assembly tighten the 3mm x 20mm
machine screw until the rubber stopper ex-
pandsandsealsthetankopening.Donot over
tighten the assembly as this could cause the
tank to split.
 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,thefrontofthetankshouldjustabout
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.
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,whereitexitsthefuselagebehindthe
enginemountingboxandtotherearof thetank
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.
Secure
COWLING.
1. Slide the fiberglass cowl over the en-
gineandlineupthebackedgeofthecowlwith
the marks you made on the fuselage.
2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowlwiththecrankshaft 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.
3. Slide the cowl back over the engine
andsecureitin place using four wood screws.
See picture below.
Tie wrap

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
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.
Installthespinnerbackplate,propellerand
spinner cone. The spinner cone is held in
place using two 3mm x 12mm wood screws.
Rightside
Trim and
cut after
Bottom side
Right side
3x12mm.
Drill a hole
2mm diameter
Secure
Machinescrew.
Right side
3 x 12mm
INSTALLING THE SPINNER.
Front view

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BLADE - ITEM CODE: BH70-A.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.
INSTALLING THE THROTTLE SERVO.
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.
Throttle servo
Drill a hole
1.5mm diameter.
Secure
Secure
Cut.
Throttle wire.
Throttle wire

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
See pictures below:
1. Draw a center line onto the horizontal
stabilizer. Then slide the horizontal into the
fuselage.
Center line
2 Using a modeling knife, cut away the
covering from the fuselage for the stabilizer
and remove it.
1. Install the rubber grommets and brass
colletsintotheelevatorservo.Testfittheservo
into the servo tray.
2. Mount the servo to the tray using the
mountingscrewsprovidedwithyourradiosys-
tem.
Drill a hole
1.5mm diameter.
Secure.
HORIZONTAL STABILIZER.
ELEVATOR SERVO INSTALLATION.
Cutthe covering
awayfromthe slot.
Temporary pin to
keep hinge centered.
Assemble then apply drops of thin
C/A to center of hinge,on both sides.
Remove covering

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
When cutting through the cover-
ingtoremoveit,cutwith only enough pres-
sure to only cut through the covering it’s
self. Cutting into the balsa structure may
weaken it. This could lead to possible fail-
ure during flight
4. Remove the stabilizer. Using the lines
youjust drew as a guide,carefully remove the
coveringfrombetweenthemusingamodeling
knife.
3. Mark the shape ofthe vertical on the left
and right sides onto the horizontal stabilizer
using a felt-tip pen
Remove covering
Check to mark sure the wing and stabi-
lizer are paralell. If they are not, lightly sand
theopeningin the fuselage for the stabilizer
until the stabilizer is paralell to the wing.
5. When you are sure that everything is
aligned correctly, mix up a generous amount
of 30 minute epoxy. Apply a thin layer to the
topandbottomof the stabilizer mounting area
and to the stabilizer mounting platform sides
inthefuselage.Slidethe stabilizerinplaceand
re-align. Double check all of your measure-
ments one more time before the epoxy cures.
Remove any excess epoxy using a paper
towel and rubbing alcohol and hold the stabi-
lizer in place with T-pins or masking tape.
Markline
Bottom side.
Markline
Top side.
Top side.
Bottom side.

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
Epoxyglue
6.After the epoxy has fully cured, remove
the masking tape or T-pins used to hold the
stabilizer in place and carefully inspect the
glue joints. Use more epoxy to fill in any
gaps that were not filled previously and
clean up the excess using a paper towel and
rubbingalcohol.
Elevator control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
C/Aglue
Elevator control horn.
ELEVATORCONTROLHORNINSTALLATION.
2x12mm.
Secure.
 Elevatorpushrodinstallassame as the way
of aileron pushrod. Please see pictures be-
low.
ELEVATOR PUSHROD INSTALLATION.
Elevator
pushrod
Drill a hole 1.5mm
diameter.
M2lock nut.

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
RUDDER SERVO INSTALLATION.
Rudder servo install as same as method of
elevator servo. See picture below:
Bend
Cut
Elevator
pushrod
Rudder servo
Control clasp.
VERTICAL INSTALLATION.
See picture below:
1. Using a modeling knife cut away the
coveringfrom the fuselage for the rudder and
remove it.
Remove covering.
Rudder servo

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
2. Slide the rudder into the fuselage as
same as picture below.
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.
4. Remove the stabilizer. Using a model-
ing knife, remove the covering from below the
linesyoudrew. Also removethecoveringfrom
the bottom edge of the stabilizer.
5. Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
theverticalstabilizer is aligned 90º tothe hori-
zontal stabilizer.
6) When you are sure that everything is a
aligned correctly, mix up a generous amount
of 30 minute epoxy. Apply a thin layer to the
slot in the mounting platform and to the verti-
cal stabilizer mounting area. Apply epoxy to
the lower rudder hinge. Set the stabilizer in
place and re-align. Double check all of your
measurements once more before the epoxy
cures. Remove any excess epoxy using a
paper towel and rubbing alcohol and hold the
stabilizerinplacewithT-pins or maskingtape.
Allow the epoxy to fully cure before proceed-
ing.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
Markline
Remove covering
Epoxyglue
C/Aglue

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BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL


1. Set the tail wheel assembly in place
on the plywood plate. The pivot point of the
tail wheel wire should be even with the rud-
derhingelineand the tailwheelbracketshould
be centered on the plywood plate.
MOUNTING THE TAIL WHEEL
BRACKET.


2. Using a pen, mark the locations of the
two mounting screws. Remove the tail wheel
bracket and drill 1mm pilot holes at the loca-
tions marked.
mark point
Drill a hole
2mm
diameter
Secure
Cutthe covering
awayfromthe slot.
Temporary pin to
keep hinge centered.
3x12mm

20
BLADE - ITEM CODE: BH70-A.INSTRUCTION MANUAL
ControlhornofRudder.
Pushrod install as same as method of
pushrod wing. See pictures below:
RUDDER PUSHROD INSTALLATION.
Assemble then apply drops of thin
C/A to center of hinge,on both sides.
Top side
Rudder control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
RUDDERCONTROLHORNINSTALLATION.
2x12mm.
Drill 1.5mm diameter a hole of the mounting
rudder control horn on to the rudder.
Drill a hole
1.5mm
Markpoint
Secure
Cut
M2lock nut.