Seagull Models ZERO MS:123 Manuale utente

“Graphics a nd s pecifications m ay c hange w ithout n otice”.

MS:123

ASSEMBLY MANUAL

Specifications:

Wing span ----------------------------66.9in (170cm).

Wing area -----------------761.1sq.in (49.1sq dm).

Weight -------------------------------------9.3lbs (4.2kg).

Length ------------------------------51.1in (129.8cm).

Engine ------------------ 0.75-0.91cu.in ----2-stroke.

0.91-1.25cu.in ---4-stroke.

Radio -------------------6 channels with 8 servos.

Retracts landing gear (included).

Electric conversion: optional

SIZE .75 - .91

ZERO. Instruction Manual.

INTRODUCTION.

Thank you for choosing the ZERO ARTF by SEAGULL MODELS. The ZERO 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 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 ZERO 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 . 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.

KIT CONTENTS

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ADDITIONAL ITEMS REQUIRED.

0.75-0.91 2-stroke.

0.91-1.25 4-stroke.

Computer radio with 8 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.

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.

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:

1) Carefully remove the aileron from one

of the wing panels. Note the position of the

hinges.

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 a nd snug the aileron

against the wing panel. A gap of 1/64” or less

should be maintained between the wing panel

and aileron.

T-pin.

1 Fuselage

2 Left wing panel

3 Right w ing p anel

4 Tail s et ( 2)

5 Canopy

6 Aluminum wing tube

7 Fiberglass cowl

8 Retracts landing gear

9 EP conversion pack

10 Hardware bag included

11 Retract covers

KIT CONTEN.TS

ZERO. Instruction Manual.

INSTALL THE AILERONS CONTROL

HORN.

1) Locate the hardware necessary to install

the control horns for 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

paper towel, remove any excess C/A glue that

may have accumulated on the wing or in the

aileron hinge 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, making sure that the C/A penetrates into

both the aileron and wing panel.

Work the aileron up and down several

times t o “ work i n” t he h inges a nd

check for proper movement.

Note:

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.

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.

Note:

Hinge.

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Aileron control horn.

2) Position the control horn on the bottom of

the aileron. You will see pre-drill hole 3mm for

the horn mounting screw on the aileron.

3) Place epoxy into hole. This will harden the

threads and prevent the crews from pulling

loose.

4) Thread a control horn end with aluminum

washer, lock nut until the top edge of the end is

9mm from the v ase of the horn as shown.

3mm.

Install the flap control horn using the same

method as same as the aileron control horns.

INSTALL FLAP CONTROL HORN.

2 sets.

3x35mm.

2 sets.

3x35mm.

ZERO. Instruction Manual.

3mm.

Flap control horn.

Install the elevator control horn using the

same method as same as the aileron control

horns.

INSTALL ELEVATOR CONTROL HORN.

Hinge.

C/A glue.

Hinge.

T-pin. 2 sets.

3x35mm.

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Elevator control horn.

ENGINE MOUNT INSTALLATION.

1) Locate the items necessary to install the

engine mount included with your model. .

2) Use four 4x30mm head bolts and four 4mm

washers to attach the engine mount rails to

the firewall. Tighten the screws . Make sure to

use threadlock on the screws to help prevent

them from vibrating loose.

4x30mm.

C/A glue.

Balsa.

Thread locker glue.

Balsa.

Epoxy.

C/A glue.

ZERO. Instruction Manual.

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.

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.

Vent tube. Fuel pick up tube.

Fuel fill tube.

5) With the stopper assembly in place,

the weighted pick-up 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 3 x 20mm

machine s crew u ntil t he r ubber s topper e x-

pands and seals the tank opening. Do not

overtighten the assembly as this could cause

the tank to split.

FUEL TANK INSTALLATION.

 7) Slide the fuel tank into the fuselage. Guide

the lines from the tank through the hole in the

firewall.

Plywood template.

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.

2) Using a modeling knife, cut one length

of silicon fuel line. Connect one end of the line

to the weighted fuel pick up and the other end

to the nylon pick up tube.

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Fuel tank.

Epoxy.

Fuel tank.

 8) Use plywood template to hold in place

the fuel tank with C/A glue to secure the fuel

tank i nside t he f uselage.

Plywood template.

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.

9) Connect the lines from the tank to the engine

and muf fler. The vent line will connect to the

muffler and the line from the clunk to the

carburetor.

INSTALLING THE FUSELAGE SER VOS.

1) Install the rubber grommets and brass

collets onto the throttle servo. Test fit the servo

into the aileron servo mount.

 2) Secure the servos with the screws pro-

vided with your radio system.

Because the size of servos differ, you

may need to adjust the size of the precut open-

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

mount allow the servo lead to pass through.

Vent tube.

Fuel pick up tube.

Fuel fill tube.

Throttle servo.

Elevator servo.

Rudder servo.

ZERO. Instruction Manual.

Switch.

Trim and cut.

150mm.

MOUNTING THE ENGINE.

 1) Position the engine with the drive washer

(150mm) forward of the firewall as shown.

THROTTLE SERVO ARM INSTALLATION.

Install adjustable servo connector in the servo

arm as same as picture below:

Adjustable Servo

connector.

Servo arm.

Loctite secure.

1 PCS.

Throttle servo arm.

Elevator servo arm.

Rudder servo arm.

3/ 32” Hole.

INSTALLING THE SWITCH.

Install the switch into the precut hole in the

side, in the fuselage.

SERVO GEAR INSTALLATION.

Servo for retractable only.

Metal connector.

Servo arm.

25mm.

Throttle servo arm.

Elevator servo arm.

Rudder servo arm.

Stearing servo arm.

Indice

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