Seagull Models DEWOITINE D.520 User manual

MadeinVietnam.

DEWOITINE

D.520

Specifications:

Wingspan------------------------------------------------70.9in--------------------------------------180cm.

Wingarea------------------------------------------------764.2sq.in-------------------------49.3sq.dm.

Approximateflyingweight-------------------------11lbs---------------------------------------4.6-5kg.

Length----------------------------------------------------56.8in-----------------------------------144.2cm.

Recommendedenginesize----------------------.1.20cu.in--------------------------------2-stroke.

----------------------------1.20 cu.in------------------------------- 4-stroke.

RecommendedR/C--------------------------------------------6channelswith9servos.

Flyingskilllevel-----------------------------------------------------Advanced/Intermediate.

ASSEMBLY MANUAL

Kit features.

• Ready-made—minimalassembly&finishingrequired.

• Ready-covered—includingdecals,trim&covering.

• Factory-installedpushrod.

• Comprehensive hardwarepack includingwheels,tank,parts,undercarriage.

• Photo-illustrated step-by-step AssemblyManual.

MS:99

“Graphics and specfications may change without notice”.

DEWOITINE.Instruction Manual.

INTRODUCTION.

Thank you for choosing the DEWOITINE D.520 ARTF by SEAGULL MODELS. The DEWOITINE

D.520 was designed with the intermediate/advanced sport flyer in mind. It is a semi scale airplane

whichiseasytoflyandquicktoassemble.Theairframeisconventionallybuiltusingbalsa,plywood

tomakeitstrongerthantheaverageARTF,yetthedesignallowstheaeroplanetobekeptlight.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 DEWOITINE D.520 is simply a joy.

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

manualthoroughlybeforestartingassemblyofyour DEWOITINED.520.Usethepartslistingbelow

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

proceduresdesignedtohelp thenewpilotonhis waytosuccessfulR/Cflight. Theywillalsobeable

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

ADDITIONAL ITEMS REQUIRED.

1.20 2-stroke

1.20 4-stroke engine.

Computer radio with nine servos.

Glow plug to suit engine.

Propeller to suit engine.

Protective foam rubber for radio

system.

Siliconefuel line.

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.

PARTS LISTING.

FUSELAGE ASSEMBLY

(1) Fuselage.

(1) Canopy.

WING ASSEMBLY

(1) Right wing half/ aileron.

(1) Left wing half/ aileron.

Tail section assembly

 (1) Horizontal stabilizer/ elevator

halves.

(1) Rudder halves.

Some more parts.

HARDWAREPACK

COWLING

Landing gear.....

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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-

semblyasthe DEWOITINE D.520is

made from natural materials and

minor adjustments may have to be

made. The paint and plastic parts

used in this kit are fuel proof. How-

ever, they are not tolerant of many

harshchemicalsincludingthefollow-

ing:paintthinner,cyano-acrylateglue

accelerator, cyanoacrylate glue de-

bonderandacetone.Donotletthese

chemicals come in contact with the

coloursonthecoveringandtheplas-

tic parts.

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 eachhinge fromthe wing panel

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

each hinge. Slide each hinge into the aileron

untilthe T-pinissnug against theaileron.This

will help ensure an equal amount of hinge is

oneithersideof thehingelinewhen theaileron

is mounted to the wing panel.

HINGING THE AILERONS - FLAP.

Note:

Hinge.

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

shouldbe maintainedbetween thewing panel

andaileron.

4)Deflect the aileron and completely

saturate each hinge with thin C/A glue. The

aileronsfrontsurface shouldlightly contactthe

wing during this procedure. Ideally, when the

Thehinge is constructed ofaspecial

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.

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:

Hinge.

DEWOITINE.Instruction Manual.

HINGING THE RUDDER.

Glue the rudder hinges in place using the

same tectniques used to hinge the ailerons.

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/A remover/debonder and a

papertowel, removeany excessC/A gluethat

may have accumulated on the wing or in the

aileronhinge area.

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,makingsurethatthe C/Apenetratesinto

both the aileron and wing panel.

Aileron control horn: See pictures below.

AILERON CONTROLHORN

Hinge.

Worktheaileronup and down several

times to “work in” the hinges and

check for proper movement.

Note:

2 sets.

3x40mm.

Aileron contronl horn .

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Install the flap control horn using the same

method as with the aileron control horns.

ALUMINUMWASHER.

CONTRONLHORN

M3 SCREW.

18mm.

Epoxy.

Wing

FLAP CONTROL HORN.

Epoxy.

Install the elevator control horn using the

same method as with the aileron control

horns.

ELEVATOR CONTROL HORN.

Aileron contronl horn .

Aluminum Washer.

CONTRONLHORN

M3 SCREW.

M3LOCKNUT.

Epoxy.

Aluminum Washer.

Elevator.

Aluminum Washer.

CONTRONLHORN

M3 SCREW.

M3LOCK NUT.

Epoxy.

Aluminum Washer.

Wing.Flap.

M3LOCKNUT.

CONTROLHORNM3SCREW.

M3 lock nut.

ALUMINUMWASHER. 18mm.

ALUMINUMWASHER.

Epoxy.

Flap.

Wing

2 sets.

3x45mm.

2 sets.

3x45mm.

DEWOITINE.Instruction Manual.

Mark and drill 4 holes for engine mount.

Insert 4 blind nuts to firewall.

See pictures below.Make yourself the

template of your engine on paper.

ENGINE MOUNT INSTALLATION.

4x30mm.

Thread locker glue.

Rudder control horn:

Usingthesametectniques usedaileroncontrol

horn. See picture below.

RUDDER CONTROL HORN.

Elevator control horn.

1 sets.

3x50mm.

Fuselage.

18mm.

Epoxy.

Rudder.

Aluminum Washer.

CONTRONLHORN

M3 SCREW.

M3LOCK NUT.

Epoxy.

Aluminum Washer.

Fuselage.

18mm.

Epoxy.

Elevator.

Rudder control horn.

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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.

INSTALLING THE STOPPER ASSEMBLY.

3) Carefully bend the second nylon tube

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

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.

Venttube. Fuel pick up tube.

Fuel fill tube.

5) With the stopper assembly in place,

the weighted pick-up should rest away from

therear of the tankand move freelyinside 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 3 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.

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

thetank isinstalled inside thefuselage, itmay

be difficult to determine which is which.

2) Usinga modelingknife, cutone length

ofsilicon fuelline. Connect oneendof theline

tothe weightedfuel pickup and the otherend

to the nylon pick up tube.

Fueltank.

DEWOITINE.Instruction Manual.

4.2mm diameter.

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

drill the mounting holes through the engine

mount at the four locations marked.

 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.

155mm.

 6) Attach the Z-Bend in the pushrod wire

to the throttle arm on the carburetor.

 5) Bolt the engine to the engine mount

using the four machine screws. Double

cheek that all the screws are tight before

proceeding.

1) Slide the fiberglass cowl over the en-

gine and line up the back edge of the cowl .

COWLING.

MachineScrew4x30mm.

Blow through one of the lines to en-

sure the fuel lines have not become kinked

inside the fuel tank compartment. Air

should flow through easily.

MOUNTING THE ENGINE.

 1) Install the pushrod housing through the

predrilledhole inthefirewall andinto theservo

compartment. The pushrod housing should

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

Make a Z-Bend 1/4" from one end of the plain

wire pushrod.

INSTALLING THE BATTERY.

Pushrodwire.

Trim and cut.

Battery.

Tie wrap.

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Trim and cut.

 3) Install themuffler and muffler extension

onto the engine and make the cutout in the

cowl for muffler clearance. Connect the fuel

and pressure lines to the carburetor, muffler

and fuel filler valve. Secure the cowl to fuse-

lage using the 3x10mm screws.

INSTALLING THE SPINNER.

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 propel-

ler comes in contact with it.

INSTALLING THE FUSELAGE SERVOS.

42mm.

Trim and cut.

C/Aglue.

Machine Screw M3x10mm.

DEWOITINE.Instruction Manual.

Installing the aileron servo in place using the

same techniques used to flap servo.

Servos. Smallweight.

Thread.

String.

Small weight.

Electric wire.

Aileron

Servo.

Throttle servo.

Elevator servo.

Rudder

servo.

Throttleservo arm.

Elevatorservo .

Rudderservo .

THROTTLE SERVO ARM INSTALLATION.

Installadjustableservoconnectorinthe servo

arm .

AdjustableServo

connector.

Servoarm.

Loctite secure.

1PCS.

INSTALLING THE SWITCH.

3/32”Hole.

Switch.

Servo tray.

INSTALLING THEAILERON - FLAP SERVOS.

M3 x 10mm.

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