Seagull Models Extra 300 Manuale utente

Kit features.

• Ready-made—minimalassembly&finishingrequired.

• Ready-coveredcovering.

• Photo-illustratedstep-by-stepAssemblyManual.

MadeinVietnam.

Specifications

WingSpan-------------------------------43in---------------------109cm.

WingArea-------------------------------367sqin----------23.7sqdm.

Weight------------------------------------20-21oz------------566-595g.

Length------------------------------------ 38.4in-------------------97.5cm.

Radio-------------------------------4channelwith4sub-microservos.

Motorsize----------------------------Park450toPark480Outrunner.

Need to Complete

Speed Control: 35A to 40A Brushless

RecommendedBattery3-cell 11.1V 1320mAh to 2100mAh Li-Po.

ASSEMBLY MANUAL

EXTRA 300. Instruction Manual.

INTRODUCTION.

Thank you for choosing the EP EXTRA 300 ARTF by SEAGULL EP. The EP EXTRA 300 was

designed with the intermediate/advanced sport flyer in mind. It is a semi scale airplane which is

easytoflyandquicktoassemble.Theairframeisconventionallybuiltusingbalsa,plywood tomake

itstrongerthantheaverageARTF,yetthedesignallowstheaeroplanetobekeptlight.Youwillfind

that most of the work has been done for you already.Flying the EP EXTRA 300 is simply a joy.

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

manualthoroughlybefore startingassemblyof your EP EXTRA 300. Usethe parts listingbelow 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

supplierandjoinyourlocalR/CModelFlyingClub.R/CModelFlyingClubsofferavarietyoftraining

proceduresdesignedtohelpthenewpilotonhiswaytosuccessfulR/Cflight.Theywillalsobeable

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

ADDITIONAL ITEMS REQUIRED.

!Motor:Park 450 to Park 480

Outrunner.

!Computer radio with four sub-

micro servos ( S75 7.5gram (

EFLRS75)) .

!Propeller 10x4.7 electric.

!Speed control: 35A to 40 A

brushless.

!Battery: 3 cell 11.1 V / 1320 -

2100mAh Li-Po.

Park 480 outrunner 910KV (EFLM1510)

40-Amp Brushless ESC (EFLA312B).

-3Cell.11.1V1320mAh Li-po ( THP1320SPL)

-3Cell, 11.1V1900mAh Li-po (THP19003S).

-3Cell,11.1V2100mAhLi-po(THP21003SPL)

www.seagullmodels.com

PARTS LISTING.

FUSELAGE ASSEMBLY

!(1) Fuselage.

!(1) Canopy hatch.

WING ASSEMBLY

!(1) Right wing half/ aileron.

!(1) Left wing half/ aileron.

!(1) Aluminium dihedral brace.

Tail section assembly

!(1) Horizontal stabilizer/ elevator

halves.

!(1) Rudder halves.

Some more parts.

HARDWAREPACK

COWLING

Landinggear.....

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

have the correct parts and that they

fit and are aligned properly before

gluing! This will ensure proper as-

sembly as the EP EXTRA 300 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

arenottolerantofmanyharshchemi-

cals including the following: paint

thinner, cyano-acrylate glue accel-

erator,cyanoacrylategluede-bonder

andacetone.Donot let thesechemi-

calscome incontact withthe colours

onthecovering and the plasticparts.

TOOLS & SUPPLIES NEEDED.

!Thick cyanoacrylate glue.

!30 minute epoxy.

!5 minute epoxy.

!Hand or electric drill.

!Assorted drill bits.

!Modellingknife.

!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.

EXTRA 300. Instruction Manual.

!1) Carefully remove the aileron from one

of the wing panels. Note the position of the

hinges.

!2)Remove each hinge from thewing 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. This will help ensure an equal amount

ofhingeison either sideofthehingeline when

the aileron is mounted to the aileron.

HINGING THE AILERONS.

!3) Slide the wing panel on the aileron 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

shouldbe maintained betweenthe wing panel

andaileron.

!4)Deflect the aileron and completely

saturate each hinge with thin C/A glue. The

aileronsfrontsurfaceshould lightly contactthe

wing during this procedure. Ideally, when the

!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,makingsurethat the C/A penetrates into

both the aileron and wing panel.

The hinge is constructed of a special

material that allows the C/A to wick or

penetrateanddistributethroughout the

hinge, securely bonding it to the wood

structureof the wingpanel and aileron.

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:

T-pin.

Hinge.

T-pin.

Hinge.

T-pin.

C/Aglue.

The control surfaces, including the

ailerons, elevators, and rudder, are

prehinged with hinges installed, but the

hinges are not glued in place. It is

imperativethat you properly adhere the

hingesin placeper the steps that follow

using a high-quality thin C/A glue.

Note:

www.seagullmodels.com

Work the aileron up and down several

times to “work in” the hinges and check

for proper movement.

HINGING THE ELEVATORS.

Note:

!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.

!7) Repeat this process with the other wing

panel, securely hinging the aileron in place.

!6)Using C/Aremover/debonderandapaper

towel, remove any excess C/A glue that may

haveaccumulatedonthe wing or intheaileron

hingearea.

HINGING THE RUDDER.

Glue the elevator hinges in place using the

same tectniques used to hinge the ailerons.

Glue the rudder hinges in place using the

same tectniques used to hinge the ailerons.

C/Aglue.

!1) Assembleand mountingthewheelpants

as shown in the following pictures.

WHEEL AND WHEEL PANTS.

C/Aglue.

EXTRA 300. Instruction Manual.

C/Aglue.

!1) Usingthe hardware provided, mount the

main landing gear to the fuselage.

INSTALLING THE MAIN LANDING GEAR.

A drop of C/A glue on the wheel collar

screws will help keep them from coming lose

duringoperation.

Repeat the process for the other wheel.

C/Aglue.

3 X 12mm.

INSTALLING ELECTRIC MOTOR.

Park 450 to Park 480

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C/Aglue.

Front view.

COWLING INSTALLATION.

!1) Slide the fiberglass cowl over the en-

gineandline up thebackedge of thecowlwith

themarks youmade on thefuselage thentrim

and cut.

Rotor shaft.

Motor.

Blindnut.

Trim and cut.

3x10mm.

EXTRA 300. Instruction Manual.

Because the size of servos differ, you

mayneedtoadjustthe size of the precut open-

ing in the mount. The notch in the sides of

themountallowtheservoleadtopassthrough.

Install the rubber grommets and brass

collets onto the aileron servo. Test fit the

servo into the aileron servo mount.

!1) Install the rubber grommets and brass

eyelets onto the aileron servo.

!2) Install the metal connector onto servo

arm.

!3) Turn the wing panel right side up. Using

amodelingknife,removethecoveringatservo

tray.

!2) While keeping the back edge of the

cowl flush with the marks, align the front of

thecowl withthe crankshaftof the motor. The

front of the cowl should be positioned so the

crankshaft is in nearly the middle of the cowl

opening.Usethespinnerbackplateasa guide.

Hold the cowl firmly in place using pieces of

masking tape.

3x10mm.

!3) Slide the cowl back over the motor.

The propeller should not touch any part

of the spinner cone. If it does, use a sharp

modeling knife and carefully trim away the

spinner cone where the propeller comes in

contact with it.

AILERON SERVOS - LINKAGES.

Servo(2pcs).

Small weight.

Thread.

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Aileroncontrol horn.

Using a small weight (Weighted fuel pick-up

workswell) and thread, feedthestring through

the wing as indicated.

Attach the string to the servo lead and

carefully thread it though the wing. Once you

havethreadthe leadthroughtthewing,remove

the string so it can use for the other servo

lead.Tapethe servo lead to the wing to prevent

it from falling back into the wing.

Secure the servos with the screws pro-

vided with your radio system.

Straigh line.

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

line as pictures below

Pen.

!5) Insert aileron control horn to the aileron.

Attach the micro control connector to the

servo arms. Be sure to use the lock tie but it

could free rotation .

Wing bottom.

M2x12mm.

EXTRA 300. Instruction Manual.

!2) Installthe rubbergrommets and brass

collets onto the elevator servo. Test fit the

servo into the elevator servo mount.

!3)Secure theservos with the screws pro-

vided with your radio system.

Because the size of servos differ, you

mayneedtoadjustthesize of the precut open-

ing in the mount. The notch in the sides of the

mount allow the servo lead to pass through.

INSTALLING THE SWITCH.

Installthe switch intothe precut holein the

side, in the fuselage.

Rightside.

Elevator servo.

Left side.

Rudder servo.

HORIZONTALSTABILIZER.

!1) Using a ruler and a pen, locate the

centerlineof thehorizontalstabilizer,atthe trail-

ing edge, and place a mark. Use a triangle

and extend this mark, from back to front,

across the top of the stabilizer. Also extend

thismark downthe back of the trailing edge of

the stabilizer.

Remove covering.

Switch.

Center line.

Repeat the procedure for orther wing

haft.

!1) Locateandcut out thecovering film from

the servo holes in both sides of fuselage.

FUSELAGE SERVO INSTALLATION.

Rightside.

Remove

covering.

Repeat the procedure for rudder servo.

Indice

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