Edge BH92-A Owner's manual

Instruction Manual Book
Made in Vietnam.
Item code: BH92-A.
95% ALMOST READY TO FLY
ALL BALSA - PLY WOOD CONSTRUCTION.
COVERED WITH ORACOVER.
 Wingspan: 2,286mm (90.00in).
 Length: 1,806mm (71.10in).
 Weight: 7.9kg (17.38lbs).
 Wing area: 75.5 dm2.
 Wing loading: 105 g/dm2.
 Wing type: Naca Airfoil.
 Gear type: Aluminium Hi-grade for main gear and tail gear (included).
Parts listing required (Not included).
 Radio: 08 channels.
 Engine : O.S.GT - 55 cc Gas.
 Servo: 08 standard high torque servos.
 Servo mount: 42mm x 21mm.
SPECIFICATION
EDGE 540 V3
New improvement.

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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Some more parts.
HARDWARE PACK
COWLING.
Landing gear.....
This instruction manual is designed to help you build a great ying aeroplane. Please read this manual
thoroughly before starting assembly of your EDGE 540-V3 55cc. Use the parts listing below to identify
all parts.
Please trial t all the parts. Make sure you have
the correct parts and that they t and are aligned
properly before gluing! This will assure proper
assembly. EDGE 540-V3 55cc 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 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 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.
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-installed
rudder.
(1) Horizontal stabilizer with
pre-installed elevator halves.
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 aircraft and to
protect the table. Keep a couple of jars or bowls
handy to hold the small parts after you open the
bag.
SUGGESTION
NOTE
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 ight we strongly recommend you contact your R/C supplier
and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training procedures
designed to help the new pilot on his way to successful R/C ight. They will also be able to advise on any
insurance and safety regulations that may apply.
WARNING
Thick cyanoacrylate glue.
30 minute epoxy.
5 minute epoxy.
Hand or electric drill.
Assorted drill bits.
Modelling knife.
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.
TOOLS & SUPPLIES NEEDED
PARTS LISTING

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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Caution! do not heat the lm more than is absolutely
necessary. If the air or the iron is too hot, the lm
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 you
have to carry out is important and must be done
carefully. The model will only be strong and y 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 t the screw.
Caution: This model is not a toy!
If you are a beginner to this type of powered model,
please ask an experienced model yer 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 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 lm covering
Minor creases or bubbles may develop in the
lm covering due to major uctuations 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
lm-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.
+ This is not a toy.
+ Be sure that no other yers 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 ip the propeller with your ngers.
+ 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
A. Fuselage.
B. Wing panel (B1, B2).
C. Horizontal stabilizer(C1, C2).
D. Rudder.
E1. Aluminium wing dihedral brace.
E2. Aluminium tube Horizontal stabilizer.
F. Cowling.
G. Decal sheet.
K. Pilot.
K
B2
D
C1
C2
G
E1
B1
F
A
E2

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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 1) Install the rubber grommets and brass
eyelets on to the aileron servos.
 2) Using a modeling knife, remove the
covering from over the pre-cut servo arm exit hole
on the aileron servo tray / hatch. This hole will allow
the servo arm to pass through when installing the
aileron pushrods.
1. INSTALLING THE AILERON SERVOS
Drill a hole
1.5mm
Servo tray
Remove the covering
Aileron
Bottom side
1. Aluminium landing gear.
3. Plastic parts for landing gear.
4. Wheel pants (left & right).
5. Spinner.
6. Fuel Tank.
8. Wheels.
9. Rudder plastic light.
11. Tail gear set.
I. SERVO
2x12mm
3x12mm
5x70mm
4x12mm
3x10mm
REPLACEMENT SMALL PARTS
11
5x50mm
6x20mm
6
5
1
4
88
9
3

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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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, remove the
masking tape and the servo lead from the thread.
 4) Place the servo into the servo tray.
Center the servo within the tray and drill 1.5mm
pilot holes through the block of wood for each of
the four mounting screws provided with the servo.
Drill a hole
1.5mm
Secure
2x12mm
Secure
Electric wire
3. INSTALLING THE AILERON LINKAGES
 3) Repeat the procedure to install the
control horn on the opposite aileron.
Installing the aileron linkages as pictures below.
 5) Repeat the procedure to install the
aileron servos in the opposite wing half.
2. INSTALLING THE AILERON CONTROL HORN
 1) Remove the covering from the slot on the
bottom of the aileron.
 2) Insert the control horn into the slot and
secure.
Push in
Secure
Top side
3x10mm
75 mm
M3 lock nut
3 x 30mm

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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2.Secure
After both linkages are completed. connect both
of the aileron servo loads using a Y-harness you
have purchased.
1. Push in
4x12mm
Aileron
control horn
Secure
See pictures below:
II. INSTALLING THE ENGINE MOUNT
Repeat the procedure to install the opposite
wing half.
Front view
Drill a hole
6.2 mm diameter
Pushrod wire
Pushrod choke
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 material from the arm.
After installing the adjustable metal connector
apply a small drop of thin C/A to the bottom nut.
This will prevent the connector from loosening
during ight.
INSTALLING THE THROTTLE - CABLE
Secure
O.S GT-55CC
5 x 70mm

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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INSTALLING THE STOPPER ASSEMBLY
III. FUEL TANK
1) The stopper has been pre-assembled at
the factory.
2) Using a modeling knife, cut one length of
silicon fuel line (the length of silicon fuel line is
calculated by how the weighted clunk should rest
about 8mm away from the rear of the tank and
move freely inside the tank). Connect one end of
the line to the weighted clunk and the other end to
the nylon pick up tube in the stopper.
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 mufer.
4) Carefully bend the third nylon tube down at
a 45 degree angle (using a cigarette lighter). This
tube will be vent tube to the fueling valve.
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 a
modeling knife. If ashing is present, make sure
none of it falls into the tank.
6) When satised 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.
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.
8) Feed three lines through the fuel tank
compartment and through the pre-drilled hole in the
rewall. 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 just about touch the back of the rewall.
Pushrod wire
Pushrod choke
Electric
engine
To carburetor
fuel inlet
Atter conrming the direction
(see front view of fuel tank). Insert and tighten the screw.
Be sure to equip
air vent pipe.
Tubing for
re-fuelling
Not included.
Tygon tubing (Gas). And
silicone tubing (Methanol).
5mm

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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1) Slide the berglass cowl over the engine and
line up the back edge of the cowl with the marks
you made on the fuselage.
2) While keeping the back edge of the cowl
ush with the marks, align the front of the cowl
with the crankshaft of 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 rmly in place using pieces of masking tape.
3) Slide the cowl back over the engine and
secure it in place using four wood screws. See
picture below.
4) Install the mufer and mufer extension
onto the engine and make the cutout in the cowl for
mufer clearance. Connect the fuel and pressure
lines to the carburetor, mufer and fuel ller valve.
Blow through one of the lines to ensure the fuel
lines have not become kinked inside the fuel tank
compartment. Air should ow through easily.
9) To secure the fuel tank in place, apply a
bead of silicon sealer to the forward area of the
tank, where it exits the fuselage behind the engine
mounting box and to the rear of the tank at the
forward bulkhead.
Do not secure the tank into place permanently
until after balancing the airplane. You may need
to remove the tank to mount the battery in the fuel
tank compartment.
Fuel tank
Choke servo
Throttle servo
Connector
Servo arm
Secure
Secure
Throttle Pushrod
Pushrod choke Cut
Cut
IV. INSTALATION CHOKE SERVO
AND THROTTLE SERVO
V. COWLING
See pictures below:
Push in
Top side
Bottom side
Trim

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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Install the spinner backplate, propeller and spinner
cone. The spinner cone is held in place using two
3mm x 8 mm machine screws.
VI. INSTALLING THE SPINNER
3x12mm
Secure
Secure
Drill a hole
2.5 mm diameter
Front view
Secure
Secure
PARTS REQUIRED
VII. MAIN GEAR INSTALATION
1) Using the hardware provided, mount the
main landing gear to the fuselage.
Push in
Push in
Aluminium
landing gear
5x50mm
6x20mm

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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3) Assemble and mounting the wheel pants
as shown in the following pictures.
Bottom side
4x20mm
Secure
Cut
Remove the covering
2) A drop of C/A glue on the wheel collar screws
will help keep them from coming lose during
operation.
Mark line
Remove the covering.
C/A glue.
A/B Epoxy glue
Push in
Repeat the procedure to install the opposite
gear.
Aluminium landing gear
Collar.
M5 nut.
Flat washer.

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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VIII. INSTALLING HORIZONTAL
STABILIZER
See pictures below:
Bottom side.
3x10mm
140 mm
M3 lock nut
1) Elevator control horn install as same as the
way of aileron control horn.
2) Elevator pushrod install as same as the way
of aileron pushrod. Please see pictures below.
1. Push in 2.Secure
4x12mm
ELEVATOR SERVO INSTALLATION
1) Install the rubber grommets and brass
collets into the elevator servo. Test t the servo
into the servo tray.
2) Mount the servo to the tray using the
mounting screws provided with your radio system.
Secure
Remove
the covering.
Drill a hole
1.5mm
Repeat the procedure to install the opposite
elevator servo.
3 x 25mm

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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Attach the stabilizer to the fuselage.
1. RUDDER CONTROL HORN INSTALLATION
 1) Remove the covering from the slot on the
bottom of the rudder.
 2) Insert the control horn into the slot and
secure it by 2mm x 10mm screw.
Please see pictures below.
IX. RUDDER INSTALLATION
Repeat the procedure to install the opposite
elevator pushrod.
Secure
Elevator pushrod
Push in
2. Push in
1. Push in
Drill a hole 3mm
Not drill.
Control horn of rudder.
3 x 40mm
Rudder
Secure
Push in
Aluminium
Push in
Rudder
259 mm
Aluminium tube. 12mm.
Attach the aluminium tube into the fuselage.

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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Please see pictures below.
2. RUDDER CABLE INSTALLATION
Rudder push-pull system install as same as picture
below.
A+B Epoxy glue
Secure
Rudder
control horn
Rudder cable
3. RUDDER SERVO INSTALLATION
Rudder
servo
Cut Rudder cable
X. RUDDER PLASTIC LIGHT
Cut
Mark line
Remove the covering.

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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XI. MOUNTING THE TAIL WHEEL
BRACKET
Set the tail wheel assembly in place on the
plywood plate. The pivot point of the tail wheel
wire should be even with the rudder hinge line
and the tail wheel bracket should be centered on
the plywood plate.
3x15mm
A/B Epoxy glue
C/A glue.
Mark and Drill
a hole 2mm
Secure
Secure
 1) Cut out the switch hole using a modeling
knife. Use a 2mm drill bit and drill out the two
mounting holes through the fuselage side.
 2) Secure the switch in place using the two
machine screws provided with the radio system.
XII. INSTALLING THE SWITCH

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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 1) Plug the servo leads and the switch lead
into the receiver. You may want to plug an aileron
extension into the receiver to make plugging in the
aileron servo lead easier when you are installing
the wing. Plug the battery pack lead into the switch.
 2) Wrap the receiver and battery pack in the
protective foam to protect them from vibration.
Use a rubber band or masking tape to hold the
foam in place.
 3) Position the battery pack and receiver behind
the fuel tank. Use two tie wraps to hold the battery
and receiver securely in place as pictures below.
Do not permanently secure the receiver and battery
until after balancing the model.
 4) Using a 2mm drill bit, drill a hole through
the side of the fuselage, near the receiver, for the
antenna to exit.
XIII. INSTALLING THE RECEIVER
AND BATTERY
Switch of engine
Receiver
UBEC
Battery of engine
Battery of receiver
Locate the aluminium wing dihedral brace.
XIV. WING ATTACHMENT
*** Test t the aluminium tube dihedral brace into
each wing haft. The brace should slide in easily. If
not, use 220 grit sand around the edges and ends
of the brace until it ts properly.
Attach the aluminium tube into the fuselage.
930 mm
600 mm
Aluminium tube wing. 32mm.
25mm.
Push in
Insert two wing panels as pictures below.
Push in
Push in
Secure
Secure

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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XV. INSTALLING COCKPIT
FUSELAGE
See picture below:
Position the canopy so the rear frame on the
canopy is aligned with the rear edge of the cockpit
opening. Use canopy glue to secure the canopy
to the canopy hatch. Use low-tack tape to hold the
canopy in position until the glue fully cures. Wrap
the tape completely around the canopy hatch, as
the tape does not stick well to the covering. We
used balsa sticks to hold the lower edges of the
canopy tightly against the canopy hatch.
BALANCING
 1) It is critical that your airplane be balanced
correctly. Improper balance will cause your plane
to lose control and crash.
THE CENTER OF GRAVITY IS LOCATED
97MM BACK FROM THE LEADING EDGE OF
THE WING.
 2) Mount the wing to the fuselage. Using a cou-
ple of pieces of masking tape, place them on the
top side of the wing 97mm back from the leading
edge, at the fuselage sides.
 3) Turn the airplane upside down. Place your
ngers on the masking tape and carefully lift the
plane.
Accurately mark the balance point on the top of
the wing on both sides of the fuselage. The bal-
ance point is located 97mm back from the leading
edge. This is the balance point at which your model
should balance for your rst ights. Later, you may
wish to experiment by shifting the balance up to
10mm forward or back to change the ying charac-
teristics. Moving the balance forward may improve
the smoothness and arrow- like tracking, but it may
then require more speed for take off and make
it more difcult to slow down for landing. Moving
the balance aft makes the model more agile with
a lighter and snappier ”feel”. In any case, please
start at the location we recommend.
With the wing attached to the fuselage, all parts of
the model installed ( ready to y), and empty fuel
tanks, hold the model at the marked balance point
with the stabilizer level.
Lift the model. If the tail drops when you lift, the
model is “tail heavy” and you must add weigh* to
the nose. If the nose drops, it is “nose heavy” and
Pillot
A/B Epoxy glue.
Lock and Open
Push in

EDGE 540-V3 55cc Item code: BH92-A. Instruction Manual
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 1) We highly recommend setting up a plane
using the control throws listed.
 2) The control throws should be measured at
the widest point of each control surface.
 3) Check to be sure the control surfaces move
in the correct directions.
Control throw Ailerons:
Low: 20 mm up / down.
High: 30 mm up / down.
Control throw Elevators:
Low: 20 mm up / down.
High: 30 mm up / down.
Control throw Rudder:
Low: 40 mm left / right.
High: 50 mm left / right.
CONTROL THROWS
20mm
20mm
20mm
20mm
40mm
40mm
Aileron control
Elevator control
Rudder control
you must add weight* to the tail to balance.
*If possible, rst attempt to balance the model by
changing the position of the receiver battery and
receiver. If you are unable to obtain good balance by
doing so, then it will be necessary to add weight to
the nose or tail to achieve the proper balance point.
97mm
 1) Completely charge your transmitter and
receiver batteries before your rst day of ying.
 2) Check every bolt and every glue joint in
your plane to ensure that everything is tight and
well bonded.
 3) Double check the balance of the airplane.
 4) Check the control surface.
 5) Check the receiver antenna . It should be fully
extended and not coiled up inside the fuselage.
 6) Properly balance the propeller.
We wish you many safe and enjoyable
ights with your EDGE 540-V3 55cc.
PRE-FLIGHT CHECK

NEVER y in wet conditions or on
windy or stormy days.
I/C FLINGT WARNINGS
THE PROPELLER IS DANGEROUS.
Keep ngers, clothing (ties, shirt
sleeves, scarves) or any other loose
objects that could be caught or
drawn in, away from the propeller.
Take care at ALL times.
NEVER use damaged or deformed
propellers or spinners.
DO NOT dispose of empty fuel
containers on a re, this can lead to
an explosion.
Keep all onlookers (especially small
children and animals) well back
from the area of operation. This is
a ying aircraft, which will cause
serious injury in case of impact with
a person or animal.
NEVER y near power lines,
aerials or other dangerous areas
including airports, motorways etc.
ALWAYS adjust the engine from
behind the propeller, and do not
allow any part of your body to be in
line with the propeller.
Always operate in open areas, away
from factories, hospitals, schools,
buildings and houses etc. NEVER
y your aircraft close to people or
built up areas.