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: AXI 2826/10.


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.INSTRUCTION MANUAL
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestarting assemblyof your BLADE.Use theparts listingbelow toidentify
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
proceduresdesignedtohelpthe newpiloton hiswayto successfulR/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.
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 yournewairplane, 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-
craftandtoprotectthe table.Keep acouple of
jars or bowls handy to hold the small parts af-
ter you open the bag.
Pleasetrialfitallthe parts.Makesure youhave
the correct parts and that they fit and are
alignedproperly beforegluing! Thiswillassure
proper assembly. BLADE ARF is hand made
from natural materials, every plane is unique
andminoradjustments mayhave tobemade.
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/Aglue accelerator,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-
installedelevator halves.
SUGGESTION.
NOTE.

3
BLADE - ITEM CODE: BH70.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.
+Theglowplugclipmustbesecurelyattached
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.
Donotstand inline withthe sideofthe propel-
ler.
+ Make engine adjustments from behind the
propeller only. Do not reach around the spin-
ningpropeller.
SAFETY PRECAUTION.
REPLACEMENT LARGE PARTS
B. Wingpanel(Left&Right).
C. Fuselage.
A.Cowling.
D . Horizontal stabilizer.
F. Aluminium wing dihedral brace.
E. Vertical stabilizer
REPLACEMENT SMALL PARTS
 1. Install the rubber grommets and brass
eyelets onto the aileron servo.
INSTALLING THEAILERON SERVOS.
Bottom side
C/Aglue
Bottom side
Aileron
Bottom side
C/Aglue
A.
B.
B. C.
D. E.
F.
G.
G. Decal sheet.

4
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
Bottom side
C/Aglue
Bottom side
C/Aglue
Bottom side
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.
Thread
Electric wire
2.Usinga modeling knife,remove the cov-
ering servo tray.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
Secure
Bottom side
Remove covering
Servo tray

5
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
2 x 10 mm.
Secure
Repeat the procedure for the other wing
half.
INSTALLINGTHEAILERONCONTROLHORN.
Nilon control clasp. M3locknut.
3x35mm.
ControlhornofAileron
1. Using a ruler & pen to draw a straight
line as below picture.
2. Locate nylon control horn, nylon con-
trol horn backplates .
Markpoint
Bottom side

6
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
3. Drillthrough6mm (diameter)the aileron
using the control horn as a guide and screw
the control horn in place.
1. Working with the aileron linkage for
now, thread one clevis onto one of the
threaded wires.
INSTALLING THE AILERON
LINKAGES.
2. Attach the clevis to the outer hole in the
control horn.
3. Plug the aileron servo into the receiver
andcentertheservo.Install theservoarm onto
the servo. The servo arm should be perpen-
dicular to the servo and point toward the mid-
dle of the wing.
M2locknut.
M2clevis.
Snapkeeper.
Bend and
cut after
C/Aglue

7
BLADE - ITEM CODE: BH70.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. Using pliers, carefully make a 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.Installtheservoarmretainingscrewand
remove the masking tape from the aileron.
Repeat the procedure for the other wing
half.
JOINING THE WING HALVES.
1. Locate the aluminium wing dihedral
brace.
2. Usingamodeling knife, removethe cov-
ering wing.
3. Test fit the dihedral brace into each wing
half. The brace should slide in easily.
Bottom side
Top side
Bottom side Bottom side
Remove covering
Top side

8
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
Epoxyglue
INSTALLING THE ENGINE MOUNT.
THERE ARE TWO OPTIONS:
1. ELECTRIC MOTOR
2. ENGINE MOUNT.
1. OPTION 1: ELECTRIC MOTOR.
3 x 15mm 3x 15mm
Maskingtape.
Epoxyglue
C/Aglue
Maskingtape.
Bottom side
Top side

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BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
2. OPTION 2: ENGINE MOUNT.
Secure
Tie wrap
4 x 25mm

10
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
INSTALLING THE STOPPER ASSEMBLY
FUEL TANK.
1. The stopper has been pre-assembled at
the factory.
2.Usinga modelingknife, cutonelength of
siliconfuelline (thelength of siliconfuel lineis
calculated by how the weighted clunk should
restabout8mmawayfrom therear ofthe tank
andmovefreelyinsidethetank).Connect one
end of the line to the weighted clunk and the
otherendto thenylon pickup tubeinthe stop-
per.
4. Carefully bend the third nylon tube down
ata 45degree angle(usingacigarettelighter).
This tubewill bevent tubetothefuelingvalve.
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. Ifflashing is present, make
sure none of it falls into the tank.
3. Carefully bend the second nylon tube up
ata 45degree angle(usingacigarettelighter).
This tube will be the vent tube to the muffler.
6. When satisfied with the alignment of the
stopper assembly tighten the 3mm x 20mm
machine screw until the rubber stopper ex-
pandsand sealsthe tankopening.Donotover
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,the frontof thetank shouldjustabout
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, whereit exitsthe fuselagebehind the
enginemountingboxandtotherearofthetank
at the forward bulkhead.
Secure
Vent tube
Fuelfilltube
Fuel pick- up tube
Silicon tube
not included.

11
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
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.
Fueltank
Locate the long piece of wire used for the
throttlepushrod. Oneend ofthe wirehas been
pre-bend in to a “Z” bend at the factory. This
“Z” bend should be inserted into the throttle
armoftheenginewhentheengineisfitted onto
theenginemount. Fitthe engineto theengine
mount using the screws provided.
INSTALLING THE ENGINE.
Markpoint
Drill a
hole 2mm
100mm.

12
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
3 x 20mm
Pushrod wire
COWLING.
1. Slide the fiberglass cowl over the en-
gineand lineup theback edgeof thecowl 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 withthecrankshaftofthe engine. 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
andsecureitinplace usingfour woodscrews.
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
andfuelfiller valve.
Bottom side
Trim and
cut after
Rightside
Right side
Secure

13
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
Bottom side
Front view
3 x 12mm
Right side
Machine screw.
INSTALLING THE SPINNER.
Installthe spinnerbackplate, propellerand
spinner cone. The spinner cone is held in
place using two 3mm x 15mm wood screws.
3 x 15mm
Secure
SERVO INSTALLATION.
ELEVATOR INSTALLATION.
2. Mount the servo to the tray using the
mountingscrews providedwith yourradio sys-
tem.
1. Install the rubber grommets and brass
colletsintotheelevatorservo.Testfittheservo
into the servo tray.

14
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
HORIZONTAL STABILIZER.
C/Aglue
C/Aglue
C/Aglue
C/Aglue
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.
Remove covering
3. Mark the shape of the vertical on the left
and right sides onto the horizontal stabilizer
using a felt-tip pen

15
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
4. Remove the stabilizer. Using the lines
youjustdrew asa guide,carefullyremove the
coveringfrom betweenthem usinga modeling
knife.
When cutting through the cover-
ingto removeit, cutwith only enoughpres-
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
Markline
Remove covering
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
topandbottomofthe stabilizermounting area
and to the stabilizer mounting platform sides
inthe fuselage.Slidethestabilizerin placeand
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.
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.
ELEVATOR CONTROL HORN INSTALLA-
TION.
C/Aglue
Bottom side
Niloncontrolclasp.
M3locknut.
3x35mm.

16
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
Elevator control horn.
Drill a hole
6 mm diameter
Markpoint
Bottom side
C/Aglue

17
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
C/Aglue
Elevator
pushrod
Bend and cut after
VERTICAL INSTALLATION.
Rudder servo install as same as method of
elevator servo. See picture below:
Elevator servo Elevator
pushrod
Control clasp.

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BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
1. Using a modeling knife cut away the
coveringfromthe fuselage for therudder and
remove it.
Remove
covering
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.
C/Aglue
Markline
4. Remove the stabilizer. Using a model-
ing knife, remove the covering from below the
linesyou drew. Alsoremovethecoveringfrom
the bottom edge of the stabilizer.
Remove covering
Epoxyglue
5. Slide the vertical stabilizer back in
place. Using a triangle, check to ensure that
theverticalstabilizer isaligned 90ºtothe hori-
zontal stabilizer.
90º
Vertical
Stabilizer.
Horizontal
Stabilizer.
C/Aglue

19
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
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
stabilizerin placewithT-pinsor maskingtape.
Allow the epoxy to fully cure before proceed-
ing.


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-
derhinge lineandthe tailwheelbracketshould
be centered on the plywood plate.
MOUNTING THE TAIL WHEEL
BRACKET.
Bottom side


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.
3x12mm.
C/Aglue
Secure

20
BLADE - ITEM CODE: BH70.INSTRUCTION MANUAL
Right side
Drill 6mm diameter a hole of the mounting
rudder control horn on to the rudder.
Rudder control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
RUDDER CONTROL HORN INSTALLA-
TION.
ControlhornofRudder.
3mm x 25mm.
M3 lock nut.
Nilon
control clasp.
C/Aglue
Left side