Seagull Models HARRIER 3D .46 User manual

Hand-made Almost Ready to Fly R/C Model Aircraft

Made in Vietnam.

Kit features.

• Ready-made—minimal assembly & finishing required.

• Ready-covered covering.

• Photo-illustrated step-by-step Assembly Manual.

HARRIER 3D .46

Specifications

Wingspan---------------------------------------- 48.4 in---------------------------- 123cm.

Wing area--------------------------------------- 751 sq.in------------------ 48.45 sq.dm.

Approximate flying weight-------------------5.5-6.6lbs----------------------- 2.5-3kg.

Length-------------------------------------------- 57 in----------------------------- 144.5cm.

Recommended engine size--------------- .46-.52 cu. in------------------ 2-stroke.

-------------- .52-.72 cu.in-------------------- 4-stroke.

Radio System required 4 channel with 6 servos.

Flying skill level Intermediate/advanced.

ASSEMBLY MANUAL

HARRIER 3D .46 Instruction Manual.

INTRODUCTION.

Thank you for choosing the Harrier 3D .46 ARTF by SEAGULL MODELS. The Harrier 3D .46 was

designed with the intermediate/advanced sport flyer in mind. It is a 3D airplane which is easy to fly

and quick to assemble. The airframe is conventionally built using balsa, plywood and veneer to make

it stronger than the average ARTF , yet the design allows the aeroplane to be kept light. You will find

that most of the work has been done for you already. The motor mount has been fitted and the hinges

are pre-installed . Flying the Harrier 3D .46 is simply a joy.

This instruction manual is designed to help you build a great flying aeroplane. Please read this

manual thoroughly before starting assembly of your Harrier 3D .46 . Use the parts listing below to

identify 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.

If you are inexperienced with basic R/C flight 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 flight. They will also be able

to advise on any insurance and safety regulations that may apply.

ADDITIONAL ITEMS REQUIRED.

.46-.52 2-stroke engine

.52-.72 4-stroke engine

Computer radio with six servos

Glow plug to suit engine

Propeller to suit engine

Protective foam rubber for radio

system

Silicone fuel line

TOOLS & SUPPLIES NEEDED.

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

PARTS LISTING.

FUSELAGE ASSEMBLY

(1) Fuselage

(1) Canopy hatch

WING ASSEMBLY

(1) Right wing half with pre-installed

aileron

(1) Left wing half with pre-installed

aileron

(2) Aluminium dihedral brace

Tail section assembly

(1) Vertical stabilizer with pre-

installed rudder

(1) Horizontal stabilizer with pre-

installed elevator halves

Some more parts.

HARDWARE PACK

COWLING

Landing gear.....

HARRIER 3D .46 Instruction Manual.

NOTE: To avoid scratching your new aero-

plane we suggest that you cover your

workbench with an old towel. Keep a

couple of jars or bowls handy to hold

the small parts after you open the

bags.

Please trial fit all parts. Make sure you

have the correct parts and that they

fit and are aligned properly before

gluing! This will ensure proper as-

sembly as the Harrier 3D .46 is

made from natural materials and

minor adjustments may have to be

made.

The paint and plastic parts used in

this kit are fuel proof. However, they

are not tolerant of many harsh chemi-

cals including the following: paint

thinner, cyano-acrylate glue accel-

erator, cyanoacrylate glue de-bonder

and acetone. Do not let these chemi-

cals come in contact with the colours

on the covering and the plastic parts.

HARRIER 3D .46 Instruction Manual.

4)Deflect the aileron and completely

saturate each hinge with thin C/A glue. The

ailerons 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.

Note:

The control surfaces, including the

ailerons, elevators, and rudder, are

prehinged with hinges installed, but the

hinges are not glued in place. It is

imperative that you properly 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 aileron

until the T-pin is snug against the aileron. This

will help ensure an equal amount of hinge is

on either side of the hinge line when the aileron

is mounted to the wing panel.

HINGING THE AILERONS.

Note:

The hinge is constructed of a special

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.

3) Slide the aileron on the wing panel until

there is only a slight gap. The hinge is now

centered on the wing panel and aileron.

Remove 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.

5) Turn the wing panel over and deflect 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

paper towel, remove any excess C/A glue that

may have accumulated on the wing or in the

aileron hinge area.

C/A glue.

HARRIER 3D .46 Instruction Manual.

8) After both ailerons are securely hinged,

firmly grasp the wing panel and aileron to

make sure the hinges are securely glued and

cannot be pulled out. Do this by carefully

applying medium pressure, trying to separate

the aileron from the wing panel. Use caution

not to crush the wing structure.

Note: Work the aileron up and down several

times to “work in” the hinges and check

for proper movement.

7) Repeat this process with the other wing

panel, securely hinging the aileron in place.

1) Carefully remove the elevator from one

of the horizontal stabilizer panels. Note the

position of the hinges.

2) Remove each hinge from the horizontal

stabilizer panel and elevator and place a T-pin

in the center of each hinge. Slide each hinge

into the elevator until the T-pin is snug against

the elevator. This will help ensure an equal

amount of hinge is on either side of the hinge

line when the elevator is mounted to the

horizontal stabilizer panel.

3) Slide the elevator on the horizontal

stabilizer panel until there is only a slight gap.

The hinge is now centered on the horizontal

stabilizer panel and elevator. Remove the T-

pins and snug the elevator against the

horizontal stabilizer panel. A gap of 1/64” or

less should be maintained between the

horizontal stabilizer panel and elevator.

4)Deflect the elevator and completely

saturate each hinge with thin C/A glue. The

elevators front surface should lightly contact

the horizontal stabilizer 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 elevator to the horizontal

stabilizer panel hinge line.

Note: The hinge is constructed of a special

material that allows the C/A to wick or

penetrate and distribute throughout the

hinge, securely bonding it to the wood

structure of the horizontal stabilizer

panel and elevator.

5) Turn the horizontal stabilizer panel over

and deflect the elevator in the opposite

direction from the opposite side. Apply thin CA

glue to each hinge, making sure that the C/A

penetrates into both the elevator and horizontal

stabilizer panel.

HINGING THE ELEVATORS.

C/A glue.

HARRIER 3D .46 Instruction Manual.

Servo.

Small weight.

Thread.

6) Using C/A remover/debonder and a

paper towel, remove any excess C/A glue that

may have accumulated on the horizontal

stabilizer or in the elevator hinge area.

8) After both horizontal stabilizer are

securely hinged, firmly grasp the horizontal

stabilizer panel and elevator to make sure the

hinges are securely glued and cannot be pulled

out. Do this by carefully applying medium

pressure, trying to separate the elevator from

the horizontal stabilizer panel. Use caution not

to crush the horizontal stabilizer structure.

7) Repeat this process with the other

horizontal stabilizer panel, securely hinging the

elevator in place.

Using a small weight (Weighted fuel pick-up

works well) and thread, feed the string through

the wing as indicated.

INSTALLING THE AILERON SERVOS.

Attach a 12 inch servo lead to the aileron servo.

Attach the string to the servo lead and carefully

thread it though the wing. Once you have

thread the lead throught the wing, remove the

string so it can use for the other servo lead.

Tape the servo lead to the wing to prevent it

from falling back into the wing.

Thread.

Small weight.

HARRIER 3D .46 Instruction Manual.

Because the size of servos differ,

you may need to adjust the size of

the precut opening in the mount. The

notch in the sides of the mount allow the

servo lead to pass through.

2) Install the aileron servo into the servo

mount, with the output shaft towards the lead-

ing edge of the wing, using the wood screws

provided with your radio system. Drill 1mm

pilot holes through the mount.

Repeat the procedure for the other wing

half.

AILERON LINKAGE.

INSTALLING THE AILERON LINKAGE.

1) Using a ruler & pen to draw a straight

line as below picture.





2) Locate the nylon control horns,nylon

control horn backplates and two machine

screws.





3) Position the aileron horn on the bottom

side of aileron. The clevis attachment holes

should be positioned over the hinge line.

 4) Using a 1.5mm drill bit and the control

horns as a guide, drill the mounting holes

through the aileron halves.

 6)Thread one nylon adjustable control horn

on to each aileron control rod. Thread the

horns on until they are flush with the ends of

the control rods.



5)Mount the control horns by inserting the

bolts through the control horn bases and

aileron halves, then into the mounting

backplates. Do not overtighten the nuts or the

backplates may crush the wood.

1) Install the rubber grommets and brass

collets onto the aileron servo. Test fit the servo

into the aileron servo mount.

Control Horn.

Mounting Screws. Mounting Plate.

Straight line.

(2) 2MMx20mm.

HARRIER 3D .46 Instruction Manual.

Pen.

Cut.

M2 clevis.

M2 lock nut.

ENGINE MOUNT.

See pictures below:

M4.

HARRIER 3D .46 Instruction Manual.

Carefully use a lighter or heat gun to

permenently set the angle of the vent tube.

Important: When the stopper assembly is in-

stalled 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.

PARTS REQUIRED

FUEL TANK.

{1} Molded Nylon Fuel Tank

{1} Preassembled Stopper Assembly

{1} Metal Weighted Pick-Up

{1} Silicon tube

INSTALLING THE STOPPER ASSEMBLY.

1) Using a modeling knife, carefully cut off

the rear portion of one of the 3 nylon tubes

leaving 1/2” protruding from the rear of the

stopper. This 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 pickup and the other

end to the nylon pickup tube.

3) Carefully bend the second nylon tube

up at a 45º angle. This tube is the vent tube.

5) With the stopper assembly in place, the

weighted pickup should rest away from the

rear of the tank and move freely inside the tank.

The 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 satisfied with the alignment of the

stopper assembly tighten the 3mm x 20mm

machine screw until the rubber stopper ex-

pands and seals the tank opening. Do not

overtighten the assembly as this could cause

the tank to split.

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

difficult to determine which is which.

Attach the silicone fuel and pressure pipes to

the tank. The lower pipe is the ‘feed’ and the

upper two the ‘pressure and fill’. The fill pipe

is the next pipe.

4) 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 falls into the tank

HARRIER 3D .46 Instruction Manual.

WHEEL AND WHEEL PANTS.

1) Assemble and mounting the wheel pants

as shown in the following pictures.

 2) Follow diagram below for wheel pant

installation:

3) You have to trim each axle using a toll

cutting and cut-off wheel.

Wheel Collar.

Axle.

Wheel. Nut.

Wheel Pant.

Landing Gear.

Nut.

(2) Washer.

Caution when cutting the axles and wear

protective goggles.

46mm.

Slide the tank into the fuselage from inside so

that the neck is at the top of the fuselage and

it locates through the engine bulkhead. Gently

secure it to the top horizontal former with a

cable tie.

Blow through one of the lines to ensure

the fuel lines have not become kinked in-

side the fuel tank compartment. Air should flow

through easily.

(2) Wheel Collar.

Axle.

Wheel. Nut.

Nut.

(2) Washer.

10 mm.

Fuel tank.

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