1/4 Sbach 342 1.20 GP EP ARF Manual

ManualsBrandsPhoenix Model ManualsAirplanes1/4 Sbach 342 1.20 GP EP ARF 65.5"

Table Of Contents

97-Sbach 120 A4.pdf

16 mm flat washer

I/C FLIGHT GUIDELINES

Made in Vietnam

When ready to fly, first extend the

transmitter aerial.

Operate the control sticks on the

transmitter and check that the control

surfaces move freely and in the

CORRECT directions.

ALWAYS land the model INTO the

wind, this ensures that the model lands

at the slowest possible speed.

Switch on the transmitter.

Switch off the transmitter.

Check that the transmitter batteries

have adequate power.

Switch off the receiver.

Switch on the receiver.

ALWAYS take off into the wind.

Check that the wings are correctly

fitted to the fuselage.

If the model does not respond correctly

to the controls, land it as soon as

possible and correct the fault.

Empty the fuel tank after flying, fuel left

in the tank can cause corrosion and

lead to engine problems.

SBACH

Instruction Manual

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 in place

and using the two zip ties for mounting them as

the picture below.

4. Using a 2mm drill bit, drill a hole through the

side of the fuselage, near the receiver, for the

antenna to exit.

Battery

Zip tie

Receiver

Switch

Engine head

Carburator

Muffler

FINAL ASSEMBLY

INSTALLING THE SPINNER

. Install the spinner back-plate, propeller and

spinner cone. The spinner cone is held in place

using two 3mm x 20mm wood screws.

. The propeller should not touch any part of the

spinner cone. If it dose, use a sharp modeling

knife and carefully trim away the spinner cone

where the propeller comes in contact with it.

INSTALLING THE SWITCH

1. The switch should be mounted on the fuselage

side, opposite the muffler, close enough to the

receiver so the lead will reach. Use the face

plate of the switch cut out and locate the

mounting holes.

2. 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.

3. Secure the switch in place using the two

machine screws provided with the radio

system.

INSTALLING THE RECEIVER AND BATTERY

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.

Secure

the cowl

SBACH

Instruction Manual

INSTALLING THE MAIN LANDING GEAR

1. Nuts have been installed at the factory.

2. Install main landing gear into the fuselage using

(4) 4mm x 20mm socket head screws and flat

washers provided in the kit.

INSTALLING THE WHEEL PANTS

SBACH

Instruction Manual

115mm

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

115mm BACK FROM THE LEADING EDGE

OF THE WING, AT THE FUSELAGE.

BALANCE A PLANE UPSIDE DOWN WITH

THE FUEL TANK EMPTY.

2. Mount the wing to the fuselage. Using a couple

of pieces of masking tape, place them on the

top side of the wing 115mm back from the

leading edge, at the fuselage sides.

3. Turn the airplane upside down. Place your

fingers on the masking tape and carefully lift

the plane .

4. If the nose of the plane falls, the plane is nose

heavy. To correct this first move the battery

pack further back in the fuselage. If this is not

possible or does not correct it, stick small

amounts of lead weight on the fuselage under

the horizontal stabilizer. If the tail of the plane

falls, the plane is tail heavy. To correct this,

move the battery and receiver forward or if this

is not possible, stick weight into the firewall.

When balanced correctly, the airplane should

sit level or slightly nose down when you lift it

up with your fingers.

TOOLS AND SUPPLIES NEEDED

• Medium C/A glue

• 30 minute epoxy

• 6 minute epoxy

• Hand or electric drill

• Assorted drill bits

• Modeling knife

• Straight edge ruler

SUGGESTION

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.

NOTE:

1. Please trial fit all the parts. Make sure you have

the correct parts and that they fit and are aligned

properly before gluing! This will assure proper

assembly. The SBACH 342 .120 SCALE 1:4 ½

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.

2. 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.

3. The SBACH 342 .120 SCALE 1:4 ½ ARF will

perform 3-D aerobatics easily if you use the

largest engines recommended within the

engine range. If you setup your airplane to do

3D maneuvers, you will need to be throttle

conscious; that is, never apply full throttle on

straight and level flying or in dives to prevent

flutter.

SAFETY PRECAUTION:

• 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.

PREPARATIONS

Remove the tape and separate the ailerons

from the wing and the elevators from the stab.

Use a covering iron with a covering sock on

high heat to tighten the covering if necessary.

Apply pressure over sheeted areas to

thoroughly bond the covering to the wood.

• 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.

SBACH

Instruction Manual

• 2 bender plier

• Wire cutters

• Masking tape

• Thread lock

• Paper towels

• Rubbing alcohol

INSTALLING THE AILERONS

1. Test fit the ailerons to the wing with the hinges.

If the hinges don’t remain centered, stick a pin

through the middle of the hinge to hold it in

position.

TEMPORARY PIN

TO KEEP HINGE

CENTERED

CA glue

2. Apply six drops of thin CA to the top and bottom

of each hinge. Do not use CA accelerator. After

the CA has fully hardened, test the hinges by

pulling on the aileron.

INSTALLING THE RUDDER

Repeat step 1 - step 2 from the installing aileron

for the installing rudder.

SBACH

Instruction Manual

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 rubbing alcohol.

7. Repeat step 1 - step 2 from the installing aileron

for the installing elevator.

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 bottom

and to the top of the stabilizer mounting area

and to the stabilizer mounting platform sides in

the fuselage. Insert the stabilizer in place and

re-align. Double check all of your

measurements one more time before the epoxy

cures. Remove any excess epoxy using a

paper towel and rubbing alcohol and hold the

stabilizer in place with T-pins or masking tape.

6. Temporarily position the aileron servo into the

servo bay. Drill a 1.6mm hole through the four

mounting holes of the servo, drilling through

the plywood mounting plate in the wing. Install

and remove a servo mounting screw into each

of the four holes. Insert a drop of thin CA into

the holes to harden the wood. After the glue

has cured, install the servo into the servo bay

using the hardware that came with your servo.

Center the servo and install a servo arm as

shown.

7. Repeat step # 1 - # 6 to install the second

aileron servo in the opposite wing half.

5. Tie the string from inside the wing to the end of

the servo wire. Pull the servo wire through the

wing with the string. Tape the servo wire to the

wing to prevent it from falling back into the wing.

SBACH

Instruction Manual

Remove the

covering

Collar

Masking tape

INSTALL THE AILERONS SERVOS & PUSHRODS

1. Install the servo in the wing require the use of

one 305mm servo extension for each aileron

servo. One Y-harness connector is required

and is used to allow the aileron servo to plug

into one slot in your receiver. You may have a

computer radio that allows you to plug the

servos into separate slots and then mix them

together through the radio transmitter. If you

choose to mix them with the radio rather than

the Y-harness, refer to the instructions with

your particular brand of radio.

2. Attach the servo extension to the aileron servo.

Secure the connectors together using a large

piece of heat shrink tubing, tape or other

method for securing the connectors together.

3. Turn the wing panel right side up. Using a

modeling knife, remove the covering from over

the precut servo box.

4. Using the string as a guide and pass the string from

the servo opening to the hole in the root of the wing.

Note: A weigh tied to a string can be used first,

then tied to the servo lead to pull it through.

INSTALLING THE CONTROL HORNS

1. The aileron has a block wood plate for mounting

the control horn. One aileron control horn in

positioned on each aileron.

SBACH

Instruction Manual

2. Make the same way for the plastic linkball to the

other side of the pushrod wire.

3. Plug the aileron servo into the receiver and

center the servo. Install the servo arm onto the

servo. The servo arm should be perpendicular

to the servo and point toward the middle of the

wing.

4. Center the aileron and hold it in place using a

couple of pieces of masking tape. Adjust the

linkage until the aileron and the servo arm are

both centered and then tighten the nut against.

Install the plastic linkball to the servo arm.

Remember use thread locking compound to

secure.

1. Locate the pushrod wire. Screw the link ball

onto the threaded end of the wire. Tighten the

nut against and then install the link ball on the

aileron control horn.

2. Secure the control horn into the aileron.

3. Repeat step # 1 - # 2 to install the control horn

on the second aileron.

INSTALLING THE AILERON LINKAGES

The aileron linkages are assembled as shown

below.

M3 nut

Plastic link ball

Adjust

the linkages

Link ball

M3 nut

95mm

22mm

Remove the covering

Plastic washer

Plastic control

3mm Screw

SBACH

Instruction Manual

INSTALLING THE HORIZONTAL STABILIZER

1. Using a modeling knife, cut away the covering

from the fuselage for the stabilizer and remove it.

2. Remove the covering from the stabilizer.

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

balsa structure may weaken it. This could lead

to possible failure during flight.

Plastic screw

3. Attach the wing to the fuselage as picture.

4. Test the position of the elevator and adjust it as

shown.

5. Repeat step 1 - step 4 for the second aileron

linkage.

Screw

Flat washer

M3 nut

Aluminum link ball

Servo arm

Plastic link ball

SBACH

Instruction Manual

INSTALLING THE THROTTLE SERVO

1. Install the rubber grommets and brass collets

into the elevator, rudder and throttle servos.

Test fit the servos into the servo tray. Trim the

tray if necessary to fit your servos

2. Mount the servos to the tray using the mounting

screws provided with your radio system.

INSTALLING THE ELEVATOR SERVO

1. Remove the covering from both size of the

fuselage.

2. Install two servo to the fuselage as shown.

→

Engine side

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 flashing 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.

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 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 just about 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 through easily.

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.

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.

To muffler

To carburator

To vent tube

INSTALLING THE STOPPER ASSEMBLY

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 muffler.

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.

Instruction Manual

SBACH

Instruction Manual

INSTALLING THE THROTTLE PUSHROD HOUSING

1. Place the engine into the engine mount and

align it properly with the front of the cowling.

The distance from the firewall to the front of the

engine thrust washer should 145mm.

If your engine is equipped with a remote needle

valve, we suggest installing it into the engine at

this time.

2. When satisfied with the alignment of the engine,

use a pencil and mark the mounting hole

location onto the firewall, where the throttle

pushrod will exit.

After installing the wheel pant, apply a small

drop of thin C/A to the bottom nut.

3. Now, remove the engine. Using a 5mm drill bit,

drill holes through the firewall and the forward

bulkhead at the marks made.

4. Slide the pushrod housing through the hole in

the firewall, through the hole in the forward

bulkhead, and into the servo compartment.

5. Apply a couple of drops of thin C/A to the pushrod

housing where it exits the firewall and where it

passes through the forward bulkhead. This will

secure the housing in place.

6. Using a modeling knife, cut off the nylon

pushrod housing in front of the servo tray.

INSTALLING THE ENGINE

Locate the long piece of wire used for the

throttle pushrod. One end of the wire has been

pre-bend in to a "Z" bend at the factory. This

"Z" bend should be inserted into the throttle

arm of the engine when the engine is fitted

onto the engine mount. Fit the engine to the

engine mount using the screws provided.

Collar

8mm

4mm collar

8mm screw

4mm axle

Nut

Collar

SBACH

Instruction Manual

SBACH

Instruction Manual

MOUNTING THE COWL

1. Remove the muffler and needle valve assembly

from the engine. Slide the fiberglass cowl over

the engine.

2. Measure and mark the locations to be cut out

for engine head clearance, needle valve,

muffler. Remove the cowl and make these cut

outs using a rotary tool with a cutting disc and a

rotary sanding drum attachment.

3. Slide the cowl back into place. 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 the middle of the precut

opening. Hold the cowl firmly in place using

several pieces of masking tape.

4. While holding the cowl firmly in position, drill

four 1,6mm pilot holes through both the cowl

and the side edges of the firewall.

5. Using a 3mm drill bit, enlarge the four holes in

the cowling.

Enlarging the holes through the cowl will prevent

the fiberglass from splitting when the mounting

screws are installed.

6. Slide the cowl back over the engine and secure

it in place using four 3mm x 12mm wood

screws.

7. Install the muffler. Connect the fuel and

pressure lines to the carburator, muffler and

fuel filler valve. Tighten the screws completely.

INSTALLING THE THROTTLE

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 flight.

2. Plug the throttle servo into the receiver and turn

on the radio system. Check to ensure that the

throttle servo output shaft is moving in the

correct direction. When the throttle stick is

moved forward from idle to full throttle, the

throttle barrel should also open and close using

this motion. If not, reverse the direction of the

servo, using the transmitter.

3. Slide the adjustable metal connector/ servo arm

assembly over the plain end of the pushrod

wire. Position the throttle stick and the throttle

trim at their lowest positions.

4. Manually push the carburator barrel fully closed.

Angle the arm back about 45 degree from

center and attach the servo arm onto the servo.

With the carburator barrel fully closed, tighten

the set screw in the adjustable metal connector.

5. Remove the excess throttle pushrod wire using

wire cutters and install the servo arm retaining

screw.

170mm

22mm

SBACH

Instruction Manual

3. The elevator has a block wood plate for

mounting the control horn. One elevator control

horn in positioned on each elevator.

INSTALLING THE ELEVATOR LINKAGES

The elevator linkages are assembled as shown below

105mm

22mm

The elevator linkages are assembled as shown below

. Repeat these step for the second servo elevator.

. Repeat these step as installing the aileron

linkages (Page 4 and page 5).

LATERAL BALANCE

After you have balanced a plane on the C.G. You

should laterally balance it. Doing this will help the

airplane track straighter.

5. Turn the airplane upside down. Attach one loop

of heavy string to the engine crankshaft and

one to the tail wheel wire. With the wings level,

carefully lift the airplane by the string. This may

require two people to make it easier.

6. If one side of the wing fall, that side is heavier

than the opposite. Add small amounts of lead

weight to the bottom side of the lighter wing

half's wing tip. Follow this procedure until the

wing stays level when you lift the airplane.

3d sERVOS

The large control throws require servos with

great centering. The digital servos are second to

none in this department. Digital servos such as

the Futaba BLS 351 should be used on all

control surfaces of this airplane for optimum

performance.

Aileron Control

12mm

Rudder Control

30mm

Elevator Control

12mm

CONTROL THROWS

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.

Ailerons : 12mm up 12mm down

Elevator : 12mm up 12mm down

Rudder : 30mm right 30mm left

• LOW RATE

3-D PERFORMANCE SETTINGS

The SBACH size 120 will perform 3-D aerobatics

easily if you use the largest engines

recommended within the engine range. If you

setup your airplane to do 3D maneuvers, you

will need to be throttle conscious; that is,

never apply full throttle on straight and level

flying or in dives to prevent flutter.

Ailerons : 45mm up 45mm down

Elevator : 40mm up 40mm down

Rudder : 45mm right 45mm left

HIGH RATE (FOR 3D)

5. Connect the spring.

INSTALLING THE TAIL WHEEL

1. The tail wheel set.

2. Remove the covering.

3. Secure the plate to the rudder.

4. Secure the tail brace to the fuselage.

6. Center the rudder servo using the radio and

install the servo arm. Attach the metal clevis to

the rudder servo arm.

7. Slide a crimp onto the cable, then pass the cable

through the threaded cable end. Pass the cable

back into the crimp and use crimping pliers to

secure the crimp to the cable.

8. Thread the metal connector to the metal clevis.

9. Attach the clevis to the rudder servo. There

should be light tension on each of the wires

when installed properly.

Note: Remember use thread locking compound

to secure.

Control horn

4. Slide a crimp onto the cable, then pass the

cable through the threaded cable end. Pass

the cable back into the crimp and use crimping

pliers to secure the crimp to the cable. Guide

the cable into the fuselage to the position for

the rudder servo.

2. The rudder has a block wood plate for mounting

the control horn. Two control horn in positioned

on both side rudder (left and right).

3. Install the control horn to the rudder.

5. Thread the metal connector to the link ball.

Control horn

Screw

Control horn

Remove the covering

Screw

Cable end

Crimp

Aluminum ball

Cable

Metal connector

Plastic ball link

INSTALLING THE RUDDER SERVO

Install the rudder servo to the fuselage as shown.

INSTALLING THE RUDDER LINKAGES

The rudder is controlled by two metal cables.

Install the rudder linkages and cables as below.

1. Use a hobby knife to remove the covering from

the openings for the rudder control cables.

Install with OS 22cc Engine

Install with OS 120 two stroke

SPECIFICATION

- Wingspan: 1663mm (65.5 in)

- Length: 1638mm (64.5 in)

- Flying weight: 4700-5200 gr

- Wing area: 56 dm2

- Wing loading: 85g/dm2

- Wing type: Naca airfoils

- Covering type: Genuine ORACOVER®

- Gear type: Aluminum Hi-grade for main

gear and spring wire for tail gear (included)

- Spinner size: Plastic 70mm (included)

- Radio: 4 channel minimum (not included)

- Servo: 6 standard hitorque servo: 2 aileron;

2 elevator; 1 rudder; 1 throttle (not included)

- Recommended receiver battery:

4.8-6V / 1200-2000mAh NiMH (not included)

- Servo mount: 21mm x 42 mm

- Propeller: suit with your engine

- Engine: .120 / 2-stroke or .120/4-stroke

glow engine (not included)

- Motor: brushless outrunner 2000-2400 W,

450 KV (not included)

- Gravity CG: 115 mm (4.5in) Back from the

leading edge of the wing, at the fuselage

- Control throw Ailerons: Low: 12mm up/down,

10% expo; High: 15mm up/down, 10% expo

- Control throw Elevators: Low: 12mm up/down,

12% expo; High: 15mm up/down, 12% expo

- Control throw Rudder: Low: 30mm right/left,

15% expo; High: 45mm right/left, 15% expo

- Experience level: Intermediate

- Plane type: Scale Aerobatic

RECOMMENDED MOTOR AND BATTERY SET UP

- Motor: RIMFIRE .120 (not included)

- Lipo cell: 6-12 cells / 4000 – 5500mAh (not included)

- Esc: 80-100A (not included)

50mm

15mm

35mm

70mm

SBACH

Instruction Manual

INSTALLING THE MOTOR AND BATTERY

This model can fly with electric, here is our

recommended for set up the system.

- Motor: RIMFIRE .120 (not included)

- Lipo cell: 6-12 cells / 4000 – 5500mAh (not included)

- Esc: 80-100A (not included)

Installing the electric motor

Battery

Screw

ESC

Summary of content (16 pages)

PAGE 1
Instruction Manual SPECIFICATION - Wingspan: 1663mm (65.5 in) - Length: 1638mm (64.
PAGE 2
Instruction Manual SBACH TOOLS AND SUPPLIES NEEDED • Medium C/A glue • 30 minute epoxy • 6 minute epoxy • Hand or electric drill • Assorted drill bits • Modeling knife • Straight edge ruler • 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.
PAGE 3
Instruction Manual SBACH INSTALL THE AILERONS SERVOS & PUSHRODS 1. Install the servo in the wing require the use of one 305mm servo extension for each aileron servo. One Y-harness connector is required and is used to allow the aileron servo to plug into one slot in your receiver. You may have a computer radio that allows you to plug the servos into separate slots and then mix them together through the radio transmitter.
PAGE 4
Instruction Manual SBACH 2. Secure the control horn into the aileron. 1. Locate the pushrod wire. Screw the link ball onto the threaded end of the wire. Tighten the nut against and then install the link ball on the aileron control horn. 3mm Screw Plastic washer Plastic control M3 nut Plastic link ball 10 2. Make the same way for the plastic linkball to the other side of the pushrod wire. Remove the covering 8 Adjust the linkages 11 3. Plug the aileron servo into the receiver and center the servo.
PAGE 5
Instruction Manual SBACH 2. Remove the covering from the stabilizer. 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 balsa structure may weaken it. This could lead to possible failure during flight. Screw Flat washer Aluminum link ball Remove the covering 15 Plastic link ball Servo arm Flat washer M3 nut Plastic screw 5. Repeat step 1 - step 4 for the second aileron linkage. 16 3.
PAGE 6
Instruction Manual SBACH INSTALLING THE RUDDER 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 bottom and to the top of the stabilizer mounting area and to the stabilizer mounting platform sides in the fuselage. Insert the stabilizer in place and re-align. Double check all of your measurements one more time before the epoxy cures.
PAGE 7
Instruction Manual SBACH INSTALLING THE TAIL WHEEL 5. Connect the spring. 1. The tail wheel set. 28 24 INSTALLING THE MAIN LANDING GEAR 2. Remove the covering. 1. Nuts have been installed at the factory. 2. Install main landing gear into the fuselage using (4) 4mm x 20mm socket head screws and flat washers provided in the kit. Remove the covering 25 3. Secure the plate to the rudder. Remove the covering 29 Screw Screw 26 30 4. Secure the tail brace to the fuselage.
PAGE 8
Instruction Manual SBACH INSTALLING THE WHEEL PANTS Install with OS 120 two stroke 16 mm flat washer 32 33 Install with OS 22cc Engine Nut 4mm collar Collar 34 INSTALLING THE MOTOR AND BATTERY Collar 4mm axle Installing the electric motor 8mm screw This model can fly with electric, here is our recommended for set up the system. 8mm ! - Motor: RIMFIRE .
PAGE 9
Instruction Manual SBACH Battery 36 40 INSTALLING THE THROTTLE PUSHROD HOUSING 1. Place the engine into the engine mount and align it properly with the front of the cowling. The distance from the firewall to the front of the engine thrust washer should 145mm. ! Screw 37 If your engine is equipped with a remote needle valve, we suggest installing it into the engine at this time. 2.
PAGE 10
Instruction Manual SBACH 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. 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.
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Instruction Manual SBACH . Repeat these step as installing the aileron linkages (Page 4 and page 5). 44 47 The elevator linkages are assembled as shown below 22mm 22mm 105mm 45 3. The elevator has a block wood plate for mounting the control horn. One elevator control horn in positioned on each elevator. . Repeat these step for the second servo elevator. 48 46 INSTALLING THE RUDDER SERVO INSTALLING THE ELEVATOR LINKAGES Install the rudder servo to the fuselage as shown.
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Instruction Manual SBACH INSTALLING THE RUDDER LINKAGES The rudder is controlled by two metal cables. Install the rudder linkages and cables as below. Crimp Cable Aluminum ball 1. Use a hobby knife to remove the covering from the openings for the rudder control cables. Cable end Plastic ball link Metal connector 53 5. Thread the metal connector to the link ball. Remove the covering 50 2. The rudder has a block wood plate for mounting the control horn.
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Instruction Manual SBACH MOUNTING THE COWL 1. Remove the muffler and needle valve assembly from the engine. Slide the fiberglass cowl over the engine. 2. Measure and mark the locations to be cut out for engine head clearance, needle valve, muffler. Remove the cowl and make these cut outs using a rotary tool with a cutting disc and a rotary sanding drum attachment. 3. Slide the cowl back into place. Align the front of the cowl with the crankshaft of the engine.
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Instruction Manual SBACH FINAL ASSEMBLY Switch INSTALLING THE SPINNER . Install the spinner back-plate, propeller and spinner cone. The spinner cone is held in place using two 3mm x 20mm wood screws. . The propeller should not touch any part of the spinner cone. If it dose, use a sharp modeling knife and carefully trim away the spinner cone where the propeller comes in contact with it. Receiver Zip tie Battery 61 INSTALLING THE SWITCH 1.
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Instruction Manual SBACH LATERAL BALANCE ! 3-D PERFORMANCE SETTINGS After you have balanced a plane on the C.G. You should laterally balance it. Doing this will help the airplane track straighter. The SBACH size 120 will perform 3-D aerobatics easily if you use the largest engines recommended within the engine range. If you setup your airplane to do 3D maneuvers, you will need to be throttle conscious; that is, never apply full throttle on straight and level flying or in dives to prevent flutter. 5.
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I/C FLIGHT GUIDELINES When ready to fly, first extend the transmitter aerial. Switch on the transmitter. Operate the control sticks on the transmitter and check that the control surfaces move freely and in the CORRECT directions. ALWAYS land the model INTO the wind, this ensures that the model lands at the slowest possible speed. Check that the transmitter batteries have adequate power. Switch off the receiver. Switch on the receiver. Check that the wings are correctly fitted to the fuselage.