Seagull Models ZERO FIGHTER User manual

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

ASSEMBLY MANUAL

Made in Vietnam

Specifications

Wingspan ----------------------- .148 cm--------------- 58.3 in.

Wing area ----------------------- 3474sq. cm ---- 538.4sq in.

Approximate flying weight ----- 2.8 - 3.0kg ----6.2 - 6.6 lb.

Recommended engine size ---------- 0.40 - .48 2 stroke.

0.50 - .72 4 stroke.

Recommended R/C ------------- 4 channel with 5 servos.

Flying skill level ------------------- Advanced / Intermediate.

Kit features

• Ready-made—minimal assembly & finishing required

• Ready-covered covering

• Factory-installed pushrods

• Factory-installed engine mount

• Factory-pinned & glued control surface hinges for ultimate safety

• Comprehensivehardwarepackincludingwheels,tank,spats,undercarriage& spinner

• Photo-illustrated step-by-step Assembly Manual

Additional items required

Engine

4 Channel or greater Radio Control system

Glues

Tools

Starting Equipment

ZERO FIGHTER. Instruction Manual

INTRODUCTION

Thank you for choosing the Zero fighter ARTF by SEAGULL MODELS. The Zero fighter was

designed with the intermediate/advanced sport flyer in mind. It is a semi scale 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.Youwillfindthatmostoftheworkhasbeendoneforyoualready.Thepushrodsarepre-made

to the correct lengths, the motor mount has been fitted and the hinges are pre-installed and pinned

for security. Flying the Zero fighter 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 Zero fighter . 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.

IfyouareinexperiencedwithbasicR/CflightwestronglyrecommendyoucontactyourR/Csupplier

and join your local R/C Model Flying Club. R/C Model Flying Clubs offer a variety of training

proceduresdesignedtohelpthenewpiloton his waytosuccessfulR/Cflight.Theywillalsobeable

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

ADDITIONAL ITEMS REQUIRED

!.40-.48 2-stroke engine.

.50-.72 4-stroke engine.

!4-channel radio with five servos.

!Glow plug to suit engine.

!Propeller to suit engine.

!Protective foam rubber for radio

system.

!Silicone fuel line.

!Stick-on weights for balance

(If necessary).

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

WING ASSEMBLY

!(1) Right wing half with pre-installed

aileron.

!(1) Left wing half with pre-installed

aileron.

!(1) Plywood wing dihedral brace.

!(1) Covering strip for centre section

joint.

Tail section assembly

!(1) Vertical stabilizer with pre-

installed rudder

!(1) Horizontal stabilizer with pre-

installed elevator halves.

Some more parts.

HARDWARE PACK

COWLING

ZERO FIGHTER. INSTRUCTION MANUAL

NOTE:To avoid scratching your new aero-

planewesuggestthatyoucoveryour

workbench with an old towel. Keep a

couple of jars or bowls handy to hold

the small parts after you open the

bags.

Pleasetrialfitallparts.Makesureyou

havethecorrectpartsandthattheyfit

andarealignedproperlybeforegluing!

This will ensure proper assembly as

the Zero fighter is made from natu-

ral materials and minor adjustments

may have to be made.

The paint and plastic parts used in

this kit are fuel proof. However, they

arenottolerantofmanyharshchemi-

cals including the following: paint

thinner, cyano-acrylate glue accel-

erator,cyanoacrylategluede-bonder

andacetone.Donotletthesechemi-

calscome in contactwith the colours

onthecoveringandtheplasticparts.

ZERO FIGHTER. Instruction Manual

!6) Reinstall the gear wire and install the

straps using the four 3mm x 12mm wood

screws. Tighten the screws completely to

secure the gear wire in place.

PARTS REQUIRED

LANDING GEAR INSTALLATION

!{2} Prebent Main Gear Wires

!{2} 60mm Diameter Wheels

!{4} Nylon Landing Gear Straps

!{8} 3mm x 12mm Wood Screws

!{4} Wheel Collars w/3mm x 6mm Set

Screws

INSTALLING THE MAIN GREAR WIRES

!1) Using a modeling knife, remove the

covering from over the two main gear mount-

ing slots located in the bottom of the wing.

!2) Insert the 90º bend of one main gear

wire into the predrilled hole in one mounting

slot.

!3) The landing gear wire is held in place

using two nylon landing gear straps and four

3mm x 12mm wood screws.

The straps should be located equal distance

from the inside and outside ends of the wire.

!4) Using the two landing gear straps as

a guide, mark the locations of the four 3mm x

12mmmountingscrewsontothewingsurface.

!5) Remove the two straps and the gear

wire. Drillfour 1.5mm pilotholesinto the wing

for the wood screws. Be careful not to drill

through the top of the wing!

!7) Slide one wheel collar with 3mm x

6mm set screw onto each axle. Push the

wheel collars on as far as they will go and

tighten the set screws.

Be careful not to overtighten the set

screws. Overtightening may cause the

threads to strip.

!8) Slide one 60mm diameter wheel onto

eachaxleandpushthemupagainstthewheel

collars. Slidetheremaining wheel collars with

3mm x 6mm set screws onto the axles. Push

them up against the wheels and tighten the

set screws. The wheels should spin free and

not bind in any way. If they do bind, loosen

the set screws in the outer wheel collars and

move the collars out a small amount. Re-

tighten the set screws.

Nylon landing gear strap

ZERO FIGHTER. INSTRUCTION MANUAL

!1) Use a small weight(Weighted fuel pick-

up )+thread to feed the servo connector

through the wing as indicated

INSTALLING THE AILERON SERVOS.

string

small weight

! 2) Attach the string to one end of 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.

ZERO FIGHTER. 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.

!4) Install the aileron servo into the servo

mount, withthe outputshaft towards thetrail-

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.

PARTSREQUIRED

!{2} 2mm x 180mm Threaded Wires

!{2} Nylon Adjustable Control Horns

!{2} Nylon Clevises

!{4} Machine screws 2MM x 20MM

!{2} Set control horns.

!3) Install the rubber grommets and brass

colletsontotheaileronservo. Testfittheservo

into the aileron servo mount.

INSTALLING THE AILERON LINKAGE

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

line as below picture.

2) Locate the two nylon control horns, two

nylon control horn backplates and four

machine screws.

!3) Position the aileron horn on the bottom

side of aileron. The clevis attachment holes

should be positioned over the hinge line.

ControlHorn

MountingScrews MountingPlate

ZERO FIGHTER. INSTRUCTION MANUAL

!4)Usinga1mmdrillbitandthecontrol horns

as a guide, drill the mounting holes through

the aileron halves.

6) Thread one nylon adjustable control

horn onto each aileron torque rod. Thread

the horns on until they are flush with the ends

of the torque rods.

!5)Mount the control horns by inserting the

screws through the control horn bases and

aileron halves, then into the mounting

backplates. Do Not overtighten the screws or

the backplates may crush the wood.

7) Connect the clevis to the control horn

and lay the wire across the servo arm. Mark

the wire where it crosses over the arm holes.

8) Cut the wire 1/2” past the mark and

make an “ L ” bend .

9) Connect the control wire to the servo

and aileron horn as shown. Use the “ L” bend

keeperto secure the control wiretothe servo

arm.

10mm

ZERO FIGHTER. Instruction Manual

! 2. Test fit the dihedral brace into each

wing half. The brace should slide in

easily up to the centreline that you

drew. If not, use 220 grit sandpaper

with a sanding block and sand down

theedgesandendsofthebraceuntil

it fits properly.

! 3. Remove the brace when satisfied

withitsfitineachwinghalf.Coatboth

sidesofonehalfofthedihedralbrace

with 30 minute epoxy. Next, pour

some epoxy into the dihedral box in

onewingpanel.Makesureyoucover

the top and bottom as well as the

sides of the dihedral brace. Use

enough epoxy to fill any gaps.

! 4. Insert the dihedral brace into the di-

hedral box up to the centreline. With

paper towels wipe off any excess

epoxythatmayhavesqueezedoutof

the joint .

Carefully slide the two wing halves together

and firmly press them together, allowing the

excess epoxy to run out. there should should

notbeanygapinthewinghalves.Userubbing

alcohol and a paper tower to clean up any

excess epoxy.

Applymaskingtapeat the wing join toholdthe

wing halves together securely.

WING ASSEMBLY

NOTE:We highly recommend using 30

minute epoxy as it is stronger and

providesmoreworkingtime,allowing

thebuildertoproperlyaligntheparts.

Using fast cure epoxy when joining

the wing halves could result in the

glue drying before the wing halves

arealignedproperlywhichmayresult

in failure of the wing centre section

during flight.

! 1. Locate the plywood wing dihedral

brace.Usingaruler,locateitscentral

and draw a vertical line .

Epoxy

central line

ZERO FIGHTER. INSTRUCTION MANUAL

INSTALLING THE PILOT.

!1.If you plan on using a pilot in your Zero

fighter .46, now is the time to mount it to the

cockpit floor area of the hatch.

INSTALLINGTHECANOPY.

!1.Locate the canopy and note the trim

lines.Carefullytrimoutthecanopyusingregu-

larscissors.Usecareincuttingout the canopy.

Glueattached.

Securing by 4 machine

screws ( 1mmx 5mm)

for each corner

!2.After cutting out the canopy, trial fit it to

fuselage.Trimas necessary tomakea proper

fit.

!3.After confirming the fit of the canopy to

the fuselage, attach it to the fuselage using

canopy glue. Masking tape can be used to

hold the canopy in place while the glue dries.

Allow the canopy glue to dry.

Glue attachment

ZERO FIGHTER. Instruction Manual

INSTALLING THE STOPPERASSEMBLY

!1) Using a modeling knife, carefully cut

off the rear portion of one of the two nylon

tubes leaving 1/2” protruding from the rear of

the stopper. This will be the fuel pick up tube.

!2) Usinga modeling knife, cutone 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.

PARTSREQUIRED

FUEL TANK

!{1} Molded NylonFuelTank

!{1} Preassembled Stopper Assembly

!{1} Metal Weighted Pick-Up

!{1} Molded Foam Fuel Tank Support

ADDINGDECALS.

!1.Locatethe decal sheetincludein the kit.

Use the box art photos and some pictures

below as an approximate position reference

for the application of the inclued decals.

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