Seagull Models SEAGULL 40 Manual de usuario

Specifications

Wingspan ------------------------------------------ 60 in/ 153cm.

Wing area ------------------------------------ 620 sq.in/ 40dm2.

Length -------------------------------------------- 45 in/ 113.7cm.

Approximate flying weight --------- 5.5 - 6.2 lbs/ 2.5-2.8kg.

Recommended engine size - 0.40 -- 0.46 cu. in 2-stroke.

0.52 cu. in 4-stroke.

Recommended R/C ------------------- 4 channel minimum.

Flying skill level ----------------------------- Low wing Trainer.

Kitfeatures.

• Ready-made-minimalassembly&finishingrequired.

• Factory-installedpushrod.

• Photo-illustratedstep-by-stepAssemblyManual.

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

ASSEMBLY MANUAL

Additionalitems required.

Engine.

4 Channel or greater Radio Control system.

Glues.

Tools.

Starting Equipment.

Madein Vietnam.

SEAGULL 40

LOW WING TRAINER

MS:10

“Graphics and specfications may change without notice”.

SEAGULL 40 LOW WING TRAINER. Instruction Manual.

WING ASSEMBLY.

NOTE: We highly recommend using 30

minute epoxy as it is stronger and provides

more working time, allowing the builder to

properlyaligntheparts.Usingfastcureepoxy

whenjoiningthewinghalvescouldresultinthe

gluedryingbeforethewinghalvesarealigned

properlywhichmayresultinfailureofthewing

centre section during flight.

 1)TestfittheWingtubeintoeachwinghalf.

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 the edges and ends of the brace until it

fits properly.

NOTE:To avoid scratching your new aero-

plane we suggest that you cover

your workbench with an old towel.

Keepacoupleofjarsorbowlshandy

toholdthesmallpartsafteryouopen

the bags.

Please trial fit all parts. Make sure

you have the correct parts and that

they fit and are aligned properly be-

fore gluing! This will ensure proper

assembly as the SEAGULL 40 is

made from natural materials and

minor adjustments may have to be

made.

The paint and plastic parts used in

thiskitare fuel proof. However, they

arenottolerantofmanyharshchemi-

cals including the following: paint

thinner, cyano-acrylate glue accel-

erator,cyanoacrylategluede-bonder

andacetone.Donotletthesechemi-

calscomeincontactwiththecolours

onthecoveringandtheplasticparts.

INTRODUCTION.

Thank you for choosing the SEAGULL 40 LOW WING TRAINER ARTF by SEAGULL MODELS. The

SEAGULL 40 was designed with the intermediate/advanced sport flyer in mind. It is a low-wing

aeroplanewhichiseasytoflyandquicktoassemble.Theairframeisconventionallybuiltusingbalsa,

plywoodtomake itstrongerthanthe averageARTF,yet thedesignallowstheaeroplanetobekept

light. You will find that most of the work has been done for you already. Flying the SEAGULL 40 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 SEAGULL 40. 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

supplierandjoinyourlocalR/CModelFlyingClub.R/CModelFlyingClubsofferavarietyoftraining

proceduresdesignedto helpthenewpilotonhisway tosuccessfulR/Cflight. Theywillalsobeable

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

Wing tube.

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 3) Peel off the backing from the self adhe-

sivecoveringstrip.Applythestriptothecentre

section of the wing starting from the bottom

trailingedge.Wrapthestripallthewayaround

the wing until it meets the trailing edge again.

Trim off any excess strip.

Carefully slide the two wing halves together

and firmly press them together, allowing the

excess epoxy to run out. There should not be

any gap in the wing halves. Use rubbing

alcohol and a paper tower to clean up any

excess epoxy.

Apply masking tape at the wing join to hold

the wing halves together securely.

2) Remove the brace when satisfied with

its fit ineach wing half. Coat both sides of one

halfofthedihedralbracewith30minuteepoxy.

Next,poursomeepoxyintothedihedralboxin

one wing panel. Make sure you cover the top

andbottomaswellasthesidesofthedihedral

brace. Use enough epoxy to fill any gaps.

Glue attach.

Maskingtape.

Removecovering.

Wing botton.

Epoxy.

INSTALLING THE AILERON SERVOS.

Because the size of servos differ, you

mayneedtoadjust thesizeofthe precutopen-

inginthemount. The notch in the sides of the

mount allow the servo lead to pass through.

1) Install the rubber grommets and brass

collets onto the aileron servo. Test fit the

servo into the aileron servo mount.

2) Usingasmallweight(Weightedfuelpick-

up works well) and thread, feed the string

through the wing as indicated.

Small

weight.

Servos.

Thread.

SEAGULL 40 LOW WING TRAINER. Instruction Manual.

4) Tape the servo lead to the wing to pre-

vent it from falling back into the wing.

 5) Reinstalltheservointotheservomount

and secure the servo inplace using the wood

screws provided with you radio system.

Thread.

Wing bottom. Small weight.

3) Attach servo lead to the aileron servo.

Attach the string to the servo lead and care-

fullythread 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.

Thread.

Electric wire.

String.

Small weight.

Plastic tape.

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2) Locate the two nylon control horns, two

nylon control horn backplates and four

machine screws.

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)Positiontheaileronhorn onthebottom

side of aileron. The clevis attachment holes

should be positioned over the hinge line.

(2) 2 x 20mm.

ControlHorn.

MountingScrews. Mounting Plate.

Repeat the procedure for the other wing

half.

Pen.

Straightline.

4) Using a 1mm drill bit and the control

horns as a guide, drill the mounting holes

through the aileron halves.

5)Mount the control horns by inserting

thescrewsthroughthe control hornbasesand

aileron halves, then into the mounting

backplates. Do not overtighten the screws or

the backplates may crush the wood.

6) Thread one nylon adjustable control

hornontoeachaileroncontrol rod. Thread the

horns on until they are flush with the ends of

the control rods.

7) With the aileron servo centered and

the aileron even with the trailing edge of the

wingattachtheclevisto the controlhorn.Mark

the control wire where it crosses the servo

arm hole.

AILERON LINKAGE.

Pen.

Markpoint.

SEAGULL 40 LOW WING TRAINER. Instruction Manual.

3) The landing gear wire is held in place

using two nylon landing gear straps and four

3mm x 10mm wood screws.

The straps should be located equal dis-

tance from the inside and outside ends

ofthewire.

4) Using the two landing gear straps as

a guide, mark the locations of the four 3 x

10mm mounting screws onto the wing sur-

face.

Gear mounting slot.

Landing gear wire.

8) Make a 90-degree bend at the mark

andcutofftheexcesswire leaving 10mm past

thebend.

9) Connect the linkage as shown and

secure the control wire with a wire keeper.

Repeat the procedure for the other

aileron servo.

INSTALLING THE MAIN GEAR 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.

Cut. 3x10mm.

7mm.

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FUEL TANK.

Be careful do not to drill through the

top of the wing!

6) Reinstall the gear wire and install the

straps using the four 3 x 10mm wood screws.

Tighten the screws completely to secure the

gear wire in place.

1) Using a modeling knife, carefully cut

offtherearportionofoneofthetwonylontubes

leaving 1/2” protruding from the rear of the

stopper. This will be the fuel pick up tube.

Pen.

Markpoint.

5) Remove the two straps and the gear

wire. Drillfour1.5mmpilotholesintothewing

for the wood screws.

1.5mm.

3 x 10mm.

Landing gear wire.

2) Usingamodelingknife,cutonelength

ofsiliconfuelline(notincluded)to2-1/4”long.

Connect one end of the line to the weighted

fuelpickupandtheother end to thenylonpick

up tube.

3) Carefully bend the second nylon tube

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

INSTALLING THE STOPPER ASSEMBLY.

4) Carefully heat the vent tube using a

heat gun or lighter to permanently set the

angle of the tube.

Vent tube. Fuel pick up

tube.

Fuel fill tube.

When the stopper assembly is installed in

the tank, the top of the vent tube should rest

justbelowthetop surfaceofthetank. Itshould

not touch the top of the tank.

SEAGULL 40 LOW WING TRAINER. Instruction Manual.

 2) Place your engine onto the engine

mount. Adjust the engine is centered of the

edges of the engine case.

 3) When you are satisfied with the align-

ment, mark the locations of the engine

mounting.

MOUNTING THE ENGINE.

1) Install the pushrod housing through the

predrilledholeinthefirewall and intotheservo

compartment. The pushrod housing should

protrude 1/4" out past the front of the firewall.

MakeaZ-Bend1/4"fromoneend of theplain

wire pushrod.

4) Remove the engine. Using an drill bit,

drill the mounting holes through the engine

mount at the four locations marked.

Fuel fill tube.

Fuel pick up

tube.

Vent tube.

Battery tray.

C/AGlueattachment.

6) With the stopper assembly in place,

the weighted pick up should rest about 3/8”

awayfromtherearof the tankandmovefreely

insidethetank. The topoftheventtubeshould

rest just below the top of the tank. It should

not touch the top of the tank.

7) When satisfied with the alignment of

thestopperassembly tightenthe3mmx20mm

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.

Using a modeling knife, cut one length of

fuelline20”long. Connectonelinetothe vent

tube and one line to the fuel pick up tube on

the stopper. See picture bellow.

Fueltank.

Blow throughthetubestomakesurethe

lines have not become kinked during

installation.

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 falls into the tank.

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3x25mm.

Pushrod wire.

 6) AttachtheZ-Bendinthepushrodwire to

the throttle arm on the carburetor.

 5) Bolttheenginetotheenginemountusing

the four machine screws. Double check that

all the screws are tight before proceeding.

Installing steering arm as below.

NOSE GEAR INSTALLATION.

2.5mm.

3x25mm.

112mm.

Adjust the nose gear steering arm until the

arm is parallel with the fire wall.

Steering arm.

Adjustable connector.

SEAGULL 40 LOW WING TRAINER. Instruction Manual.

1) Install the rubber grommets and brass

collets onto the elevator, rudder and throttle

servos. Test fittheservosintothepreinstalled

servo tray. Because the size of servos dif-

fer, you may need to adjust the size of the

precut openings in the tray.

INSTALLINGTHEFUSELAGESERVOS.

1) Install the switch into the precut hole

in the fuselage side. Use the two screws pro-

vided with the switch to secure it in place.

INSTALLING THE SWITCH.

Switch.

Install the pushrod wire as shown.

INSTALLINGTHESPINNER.

Install the spinner backplate, propeller and

spinner cone. The spinner cone is held in

place using two 3 x 15mm wood screws.

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.

Adjustable

Connector.

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