Seagull Models SEA238 User manual

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ASSEMBLY MANUAL

www.seagullmodels.com

Code: SEA238

Specications:

Wingspan---------------68.9 in (175 cm).

Wing area---------------776.6 sq.in ( 50.1 sq.dm).

Weight-------------------7.7 lbs (3.5 kg).

Length-------------------48.2 in (122.5 cm).

Engine-------------------10cc - 15cc.

Glow engine------------.61 - 2 stroke

Motor size---------------Power 60 ( Electric power)

Radio--------------------4 channels with 5 servos.

Electric conversion: Optional.

“ Graphics and specications may change without notice ” .

Bowers Flybaby Instruction Manual.

ank you for choosing the BOWERS FLYBABY ARF by SEAGULL MODELS

COMPANY LTD,. e BOWERS FLYBABY was designed with the intermediate/ad-

vanced sport yer in mind. It is a semi scale airplane which is easy to y and quick to as-

semble. e airframe is conventionally built using balsa, plywood to make it stronger

than the average ARTF, yet the design allows the aeroplane to be kept light. You will nd

that most of the work has been done for you already. e motor mount has been t-

ted and the hinges are pre-installed. Flying the BOWERS FLYBABY is simply a joy.

is instruction manual is designed to help you build a great ying aeroplane. Please read this

manual throughly before starting assembly of your BOWERS FLYBABY. Use the parts listing

below to indentify all parts.

INTRODUCTION.

WARNING.

KIT CONTENTS

Please be awere that this aeroplane is not a toy and if assembley or used incorrectly it is

capable of causing injury to people or property. WHEN YOU FLY THIS AEROPLANE YOU

ASSUME ALL RISK & REPONSIBILITY.

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 oer a variety

of training procedures designed to help the new pilot on his way to successful R/C ight.

ey will also be able to advise on any insurance and safety regulations that may apply.

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KIT CONTENTS.

SEA238 BOWERS FLYBABY

SEA23801 Fuselage

SEA23802 Wing set

SEA23803 Tail set

SEA23804 Canopy

SEA23805 Pilot

SEA23806 Cowling

SEA23807 Aluminum wing tube

ADDITIONAL ITEMS REQUIRED.

TOOLS & SUPPLIES NEEDED.

in cyanoacrylate glue.

Medium 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.

read-lock.

Paper towels.

�10-15cc gasoline engine.

�.61 glow engine.

�Power 60 size motor.

�Computer radio with 5 servos.

�Glow plug to suit engine.

�Propeller to suit engine.

�Protective foam rubber for radio

system.

HINGING THE AILERON.

Note : e control surfaces, including the ai-

lerons, elevators, and rudder, are prehinged

with hinges installed, but the hinges are not

glued in place. It is imperative that you prop-

erly adhere the hinges in place per the steps

that follow using a high-quality thin C/A glue.

1) Carefully remove the aileron from one

of the wing panels. Note the position of the

hinges.

2) Remove each hinge from the wing panel

and aileron and place a T-pin in the center of

each hinge. Slide each hinge into the wing

panel until the T-pin is snug against the wing

panel. is will help ensure an equal amount

of hinge is on either side of the hinge line

when the aileron is mounted to the aileron.

3) Slide the wing panel on the aileron until

there is only a slight gap. e hinge is now

centered on the wing panel and aileron. Re-

move the T-pins and snug the aileron against

the wing panel. A gap of 1/64” or less should

be maintained between the wing panel and

aileron.

Hinge.

Bowers Flybaby Instruction Manual.

NOTE : e hinge is constructed of a spe-

cial material that allows the C/A to wick

or penetrate and distribute throughout

the hinge, securely bonding it to the wood

structure of the wing panel and aileron.

in CA.

5) Turn the wing panel over and deect the

aileron in the opposite direction from the

opposite side. Apply thin C/A glue to each

hinge, making sure that the C/A penetrates

into both the aileron and wing panel.

6) Using C/A remover/debonder and a pa-

per towel, remove any excess C/A glue that

may have accumulated on the wing or in the

aileron hinge area.

7) Repeat this process with the other wing

panel, securely hinging the aileron in place.

8) Aer both ailerons are securely hinged,

rmly grasp the wing panel and aileron to

make sure the hinges are securely glued and

cannot be pulled out. Do this by carefully ap-

plying medium pressure, trying to separate

the aileron from the wing panel. Use caution

not to crush the wing structure.

Work the aileron up and down sev-

eral times to “work in” the hinges

and check for proper movement.

Note :

4) Deect the aileron and completely satu-

rate each hinge with thin C/A glue. e ailer-

ons front surface should lightly contact the

wing during this procedure. Ideally, when

the hinges are glued in place, a 1/64” gap or

less will be maintained throughout the lengh

of the aileron to the wing panel hinge line.

HINGING THE ELEVATORS.

1) Locate the item for this sectiom of the

manual.

2) Carefully remove the elevator from

one of the horizontal stabilizer panels.

Note the position of the hinges.

3) Remove each hinge from the hori-

zontal stabilizer panel and elevator

and place a T-pin in the center of each

hinge. Slide each hinge into the eleva-

tor until the T-pin is snug against the

elevator. is will help ensure an equal

amount of hinge is on either side of the

hinge line when the elevator is mount-

ed to the horizontal stabilizer panel.

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HINGING THE RUDDER.

Glue the top two rudder hinges in place

using the same techniques used to hinge

the ailerons.

e lower hinge will be glued when the

n/rudder assembly is attached to the fu-

selage.

INSTALL THE AILERONS

CONTROL HORN.

Epoxy.

Glue the elevator hinges in place using the

same techniques used to hing the ailerons.

Epoxy.

Aileron control horn.

INSTALL ELEVATOR CONTROL HORN.

Fiberglass control horn

Bowers Flybaby Instruction Manual.

Elevator berglass control horn.

Epoxy.

INSTALL RUDDER CONTROL HORN.

Repeat steps to install the rudder control

horn as same as steps done for ailerons.

Epoxy.

Rudder berglass control horn.

INSTALLING THE FUSELAGE SERVOS.

Because the size of servos dier, you

may need to adjust the size of the precut

opening in the mount. e notch in the

sides of the mount allow the servo lead to

pass through.

1) Install the rubber grommets and brass

collets into all servos. Test t the servos

into the fuselage servo mounts.

2) Secure the servos with the screws pro-

vided with your radio system.

Rudder servo.

rottle servo.

Elevator servo.

THROTTLE SERVO ARM

INSTALLATION.

Install adjustable servo connector in the

servo arm as same as picture below:

Epoxy.

Fiberglass control horn

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Servo arm.

Adjustable servo

connector.

Loctite secure.

rottle servo arm.

Elevator servo arm.

Rudder servo arm.

Trim and cut.

Switch.

INSTALLING THE ENGINE SWITCH.

Trim and cut.

INSTALLING THE RECEIVER SWITCH.

Install the switch into the precut hole in

the side, in the fuselage.

3/32” Hole.

Switch.

INSTALLING THE STOPPER

ASSEMBLY.

1) Using a modeling knife, carefully cut

o the rear portion of one of the 3 nylon

tubes leaving 1/2” protruding from the

rear of the stopper. is will be the fuel

pick up tube.

2) Using a modeling knife, cut one length

of silicon fuel line. Connect one end of

the line to the weighted fuel pick up and

the other end to the nylon pick up tube.

Bowers Flybaby Instruction Manual.

3) Carefully bend the second nylon tube up

at a 45º angle. is tube is the vent tube.

4) Test t the stopper assembly into the tank.

It may be necessary to remove some of the

ashing around the tank opening using a

modeling knife. If ashing is present, make

sure none falls into the tank.

5) With the stopper assembly in place, the

weighted pick-up should rest away from the

rear of the tank and move freely inside the

tank. e top of the vent tube should rest just

below the top of the tank. It should not touch

the top of the tank.

6) When satised with the alignment of the

stopper assembly tighten the 3 x 20mm ma-

chine 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.

FUEL TANK INSTALLATION.

You should mark which tube is the vent

and which is the fuel pickup when you attach

fuel tubing to the tubes in the stopper. Once the

tank is installed inside the fuselage, it may be

dicult to determine which is which.

7) Slide the fuel tank into the fuselage. Guide

the lines from the tank through the hole in

the rewall.

8) Use plywood template to hold in place the

fuel tank with C/A glue to secure the fuel

tank inside the fuselage.

Vent tube. Fuel pick up tube.

Fuel fill tube.

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Ignition Module.

9) Connect the lines from the tank to the en-

gine and muer. e vent line will connect

to the muer and the line from the clunk to

the carburetor.

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.

Vent tube.

Fuel pick up tube. Fuel ll tube.

ENGINE MOUNT INSTALLATION.

1) Locate the items necessary to install

the engine mount included with your

model.

4x30mm

2) Use four 4x30mm head bolts and four

4mm washers to attach the engine mount

rails to the rewall. Tighten the screws .

Make sure to use threadlock on the screws

to help prevent them from vibrating loose.

MOUNTING THE ENGINE.

1) Position the engine with the drive

washer (145mm) forward of the rewall

as shown.

read locker glue.

Bowers Flybaby Instruction Manual.

2) Use a pin drill and 4mm drill bit to

drill a small indentation in the mount for

the engine mounting screw.

3) Use a drill to drill the four holes in the

engine mount rails.

4mm

Machine screw M4x30mm

4) On the re wall has the location for the

throttle pushrod tube (pre-drill).

5) Slide the pushrod tube in the rewall

and guide it through the fuel tank mount.

Use medium C/A to glue the tube to the

rewall and the fuel tank mount.

6) Connect the Z-bend in the 450mm

throttle pushrod to the outer hole of the

carburetor arm.

7) Slide the throttle pushrod wire into

the tube. Position the engine between the

mounts. Use four M4x30mm machine

screws to secure the engine to the mount

as shown.

Pushrod wire.

4mm

145mm

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