Black Horse Model RYAN BH 72 User manual

Instruction Manual book
SPECIFICATION


Wingspan : 2,350 mm 92.52 in.


Length : 1,730 mm 68.11 in.


Weight : 6.4 kg 14.08 Lbs.


Radio : 06 channels.


Servo : 08 servos.


Engine : O.S GT 22 - 33cc gas.
MadeinVietnam.
ITEM CODE:BH 72

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RYAN - Item code: BH72 . Instruction Manual
This instruction manual is designed to help you build a great flying aeroplane. Please read this
manualthoroughlybeforestartingassemblyofyour RYAN.Usethepartslistingbelowtoidentifyall
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
proceduresdesigned tohelpthe newpiloton hiswaytosuccessful R/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.....
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 air-
craftandtoprotect the table. Keep a couple of
jars or bowls handy to hold the small parts af-
ter you open the bag.
Pleasetrial fitallthe parts.Makesureyou have
the correct parts and that they fit and are
alignedproperly before gluing! This will assure
proper assembly. RYAN 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-
installedelevator halves.
SUGGESTION.
NOTE.

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RYAN - Item code: BH72 . Instruction Manual
Caution: this model is not a toy!
Ifyou are a beginner to this typeof powered model, please ask an experiencedmodel flyer for help
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 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.
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.
+ 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.

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RYAN - Item code: BH72 . Instruction Manual
REPLACEMENT LARGE PARTS
B. Wing panel.
C. Fuselage.
A.Cowling.
D . Horizontal stabilizer.
F. Aluminium wing dihedral brace.
E. Rudder.
G. Decal sheet.
REPLACEMENT SMALL PARTS
1. Under carriage struts.
2. Oleo strut.
5. Plastic - enginemount.
11. Plastic fuselage top hatch.
8. Fuel tank.
3. Wheels
4.Spinner. 9. Tail gear set.
6. Wheel pants.
7. Plastic parts for fairing.
10. Plastic parts for pushrod.
12. Wing struts.
A.
B.
B.
C.
D. E.
F.
G.
D.
K.
1.
2.
4.
2.
6.
5.
11.
8. 9.
3.
7.
10.
12.
K. Fuselage top hatch

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RYAN - Item code: BH72 . Instruction Manual
1) Install the rubber grommets and brass
eyelets onto the aileron servos.
2)Usingamodelingknife,removethe cov-
ering at possition show below.
Remove
covering
Top side
Aileron
Flap
Bottom side
Servotray.
Servotray.
I. AILERON.
1.INSTALLING THE AILERON SERVOS.

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RYAN - Item code: BH72 . Instruction Manual
4)Drill1,6mmpilot holes through the block
of wood for each of the four mounting screws
provided with the servo.
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.
5. Instal servo tray with aileron servo into
the wing as same as picture below.
A+B Epoxy
PLUS glue
AB
thread
Electric wire
A+B Epoxy
PLUS glue
Secure.
Secure
2x10mm.
Bottom side
INSTALLING THEAILERONCONTROLHORN.
Aileroncontrolhorn

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RYAN - Item code: BH72 . Instruction Manual
Installing the aileron linkages as pictures
below.
INSTALLING THE AILERON
LINKAGES.
Repeat the procedure for the other wing
half.
II. FLAP.
1.INSTALLING THE FLAP SERVOS.
Control horn of
theaileron.
2x10mm.
Aileron
Bottom side
M3 lock nut
M3 M3
85 mm
Flap
Flap
Flap
Secure.

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RYAN - Item code: BH72 . Instruction Manual
Flap controlhorn
Installing the flap linkages as pictures
below.
M3 lock nut
M3 M3
85mm
2.INSTALLING THE FLAP CONTROL HORN.
PARTSREQUIRED
MAIN GEAR INSTALATION.
A+B Epoxy
PLUS glue
Flap control
horn.
Repeat the procedure for the other wing
half.
3. INSTALLING THE FLAP
LINKAGES.
Flap Aileron
3 x 15mm 3 x 15mm
3 x 10mm 3 x 10mm
3 x 15mm
6.
2.
7.
3. 6.
7.
2.
1. 1.

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RYAN - Item code: BH72 . Instruction Manual
3 x 15mm
Remove covering
Markpoint
Secure.
3 x 15mm
Markpoint.
Secure
Markpoint
Cut

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RYAN - Item code: BH72 . Instruction Manual
Push.

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RYAN - Item code: BH72 . Instruction Manual
Secure
Drill a hole 2mm
diametter.
Secure.
Secure.
Secure
3x 10mm
Drill a hole 2mm
diametter.
3x 10mm

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RYAN - Item code: BH72 . Instruction Manual
INSTALLING THE ENGINE MOUNT.
See pictures below:
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.
1) The stopper has been pre-assembled
at the factory.
2) Using a modeling knife, cut one length
ofsiliconfuel line (the length of silicon fuelline
iscalculated byhowtheweighted clunk should
restabout8mmaway from the rear of the tank
andmovefreelyinsidethetank). Connect one
end of the line to the weighted clunk and the
otherendto the nylon pick up tube inthestop-
per.
INSTALLING THE STOPPER ASSEMBLY
FUEL TANK.
Repeat the procedure for the other wing
half.
4x 30mm
4x 30mm
Drill a hole 4mm
diametter.
Bottom side.

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RYAN - Item code: BH72 . Instruction Manual
When the stopper assembly is installed in the
tank, the top of the vent tube should rest just
belowthetop surface of the tank.Itshould not
touch the top of the tank.
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.
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.
6) When satisfied with the alignment of
thestopperassemblytightenthe 3mmx20mm
machine screw until the rubber stopper ex-
pandsand seals the tank opening.Donotover
tighten the assembly as this could cause the
tank to split.
Vent tube Fuel pick- up tube
Fuelfill tube
Tygon gas tubing not included.
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 front of the tank should justabout
touch the back of the firewall.
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, where it exits the fuselage behind the
enginemountingboxandtotherearofthetank
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
4) Carefullybend the thirdnylontubedown
ata 45 degree angle(usingacigarettelighter).
This tubewillbeventtubetothefuelingvalve.

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RYAN - Item code: BH72 . Instruction Manual
Fueltank
155mm.
Markpoint.
Drill a hole 4mm
diameter.
INSTALLING THE ENGINE.

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RYAN - Item code: BH72 . Instruction Manual
Secure.
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 PUSHROD.
Electric power.
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.
Servo arm.
Connector.
Throttle servo

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RYAN - Item code: BH72 . Instruction Manual
1. Slide the fiberglass cowl over the en-
gineandline up the back edge of the cowl with
the marks you made on the fuselage.
COWLING.
2. While keeping the back edge of the
cowl flush with the marks, align the front of
thecowl withthecrankshaftof the 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
andsecureitin place using four wood screws.
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.
Left side
Throttle servo
Throttle Pushrod.
Secure.
Pushrod choke.
Bottom side.
Throttle Pushrod.
Pushrod
choke.
Throttle Pushrod.

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RYAN - Item code: BH72 . Instruction Manual
Bottom side.
Trim and cut after.
Bottom side
Mark point.
Machine screw.
3 x 12mm
Secure.
Installthe spinner backplate, propeller and
spinner cone. The spinner cone is held in
place using two 3mm x 12mm wood screws.
INSTALLING THE SPINNER.
3 x 12mm.

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RYAN - Item code: BH72 . Instruction Manual
1. Install the rubber grommets and brass
colletsintothe elevator servo.Testfit the servo
into the servo tray.
2. Mount the servo to the tray using the
mountingscrews provided with your radio sys-
tem.
Secure.
SERVOS INSTALLATION.
Horizontalstabilize installation .
See picture below.
HORIZONTAL STABILIZER
INSTALLATION.
ELEVATOR INSTALLATION.
Elevatorservo
Elevatorservo

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RYAN - Item code: BH72 . Instruction Manual
285 mm
Aluminium 12 mm
3 x 10mm
Secure.
Elevator control horn install as same as the
way of aileron control horn. Please see pic-
tures below.
ControlhornofElevator.
Bottom side.
ELEVATOR CONTROL HORN INSTALLA-
TION.

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RYAN - Item code: BH72 . Instruction Manual
 Elevatorpushrodinstallassame as the way
of aileron pushrod.
M2 M2 lock nut. See picture below.
Aluminium
Elevator
pushrod
Bottom side.
Elevator
pushrod.
Elevator
pushrod.
M2 M2 lock nut.
A+B Epoxy
PLUSglue.
Controlhorn
ofElevator
ELEVATOR PUSHROD INSTALLATION.
VERTICAL STABILIZER INSTALLATION.