Seagull Models Mini Sparrowhawk EP User manual

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ASSEMBLY MANUAL

MS: X68

Specifications:

Wingspan---------------------------35.4in(90cm).

Wingarea--------------235.6sq.in(15.2sqdm).

Weight----------------1.4-1.9lbs(0.63-0.85kg).

Length-----------------------------29.6in(75.2cm).

Speedcontrol(ESC)------------15A-30Aamp.

Motor -------------------------------------- 450-480.

Radio-----------4channelswith4miniservos.

Battery3-cell 1800mAhto 2100mAhLi-Po.

10 x 5E Electric Prop.

“Graphics and specifications may change without notice”.

MINI SPARROWHAWK EP Instruction Manual.

INTRODUCTION.

Thankyouforchoosingthe MINISPARROWHAWKEP ARTFbySEAGULLMODELSCOMPANY

LTD. The MINI SPARROWHAWK EP 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

conventionallybuiltusingbalsa,plywoodtomakeitstrongerthantheaverageARTF,yetthedesign

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 MINI

SPARROWHAWK EP 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 MINI SPARROWHAWK EP . 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

proceduresdesigned to helpthenewpiloton hiswaytosuccessfulR/C flight. Theywillalsobeable

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

KIT CONTENTS

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KIT CONTENTS.

1 Fuselage

2 Canopy

3 Left wing panel

4 Right wing panel

5 Tail set

6 Carbon fiber wing tube

7 Pilot

8 Fiberglass cowl

9 Hardware bag included.

ADDITIONAL ITEMS REQUIRED.

Motor 450-480

4 channel radio with 4 mini servos

Propeller to suit engine

Protective foam rubber for radio

system

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.

HINGING THE AILERONS .

Note:

1) Carefully remove the aileron from one

of the wing panels. Note the position of the

hinges.

2)Removeeachhingefromthewingpanel

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

each hinge. Slide each hinge into the aileron

untiltheT-pin issnug againstthe aileron.This

will help ensure an equal amount of hinge is

oneither side ofthehingelinewhenthe aileron

is mounted to the wing panel.

Hinge.

T-pin.

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 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

shouldbemaintained between the wingpanel

andaileron.

MINI SPARROWHAWK EP Instruction Manual.

8)Afterbothailerons 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,remove any excess C/A gluethat

may have accumulated on the wing or in the

aileronhinge area.

5)Turnthewing panel over and deflectthe

aileron in the opposite direction from the

opposite side. Apply thin C/A glue to each

hinge,making surethattheC/A penetratesinto

both the aileron and wing panel.

Workthe aileron upand down several

times to “work in” the hinges and

check for proper movement.

Note:

HINGING THE ELEVATORS.

4) Deflect the aileron and completely

saturate each hinge with thin C/A glue. The

aileronsfrontsurfaceshouldlightlycontactthe

wing during this procedure. Ideally, when

thehinges 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.

Hinge.

Thehinge 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:

2) Remove each hinge from the horizontal

stabilizerpaneland elevator and placeaT-pin

in the center of each hinge. Slide each hinge

intothe elevator until theT-pinis snug against

the elevator. This will help ensure an equal

amount of hinge is on either side of the hinge

line when the elevator is mounted to the

horizontal stabilizer panel.

1) Carefully remove the elevator from one

of the horizontal stabilizer panels. Note the

position of the hinges.

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Glue the elevator hinges in place using the

same techniques used to hinge the ailerons.

HINGING THE RUDDER.

Glue the rudder hinges in place using the

same techniques used to hinge the ailerons.

INSTALL THE AILERONS CONTROL

HORN.

Hinge.

Epoxy.

Aileron control horn .

INSTALL ELEVATOR CONTROL HORN.

Applyepoxyglue.

MINI SPARROWHAWK EP Instruction Manual.

INSTALLING THE FUSELAGE SERVOS.

Elevator servo.

1) Installthe rubber grommets andbrass

colletsonto thethrottleservo. Testfit 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

mayneedto adjust the size oftheprecutopen-

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

mount allow the servo lead to pass through.

INSTALL RUDDER CONTROL HORN.

Rudder control horn.

Elevatorcontrolhorn.

Epoxy.

Cut.

Epoxy.

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Rudder servo.

Servos.

Smallweight. Thread.

INSTALLINGTHEAILERON.

2) Place the servo between the mounting

blocksand spaceitfromthehatch.Usea pencil

to mark the mounting hole locations on the

blocks.

3) Use drill bit in a pin vise to drill the mouting

holes in the blocks.

1) Usingasmall weight (Weightedfuel pick-up

workswell) andstring, feedthe string through

the wing as indicated.

Because the size of servos differ, you

mayneed toadjustthesize oftheprecutopen-

ing in the mount. The notch in the sides of

themountallowtheservolead topassthrough.

4) Apply 2-3 drops of thin C/A to each of the

mounting holes.Allow the C/Ato cure without

using accelerator.

6) Secure the servo to the aileron hatch using

Phillips screwdriver and the screws provided

with the servo.

5) Use dental floss to secure the connection

so they cannot become unplugged.

7) Apply 1-2 drops of thin C/A to each of the

mounting tabs. Allow the C/A to cure without

using accelerator.

MINI SPARROWHAWK EP Instruction Manual.

ELECTRIC POWER INSTALLATION.

1) Locate the items neccessary to install the

electric power installation.

2) Attach the electric motor box to the firewall

suitable with the cross lines drawn on the electric

motor box and firewall. Using epoxy and balsa

stick to secure the motor box to the

firewall.Please see pictures below.

8) A string has been provided in the wing to

pull the aileron lead through to the wing root.

Remove the string from the wing at the servo

location and use the tape to attach it to the

servoextensionlead.Pull the lead through the

wing and remove the string.

9) Set the aileron hatch in place and use a

Phillips screw driver to install it with four wood

screws.

Aileronservo.

15A-30A.

450-480.

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Battery.

M3 x 15mm. Electric motor.

110mm.

4mm.

4) Locate the plywood battery tray to the

fuselage.

3) Attach the motor to the front of the electric

motor box using four 3mm blind nut, four

M3x15mm hex head bolts to secure the motor.

Please see picture shown.

Battery.

Epoxy. Balsa.

Epoxy.

1800mAh-2100mAh.

Speed control.

5) Attach the speed control to the side of the

motor box using two-sided tape and tie wraps.

Connect the appropriate leads from the speed

control to the motor. Make sure the leads will

not interfere with the operation of the motor.

1) Slide the fiberglass cowl over the mo-

tor and line up the back edge of the cowl with

themarks you made onthe fuselage thentrim

and cut as shown.

COWLING.

15A-30A.

MINI SPARROWHAWK EP Instruction Manual.

INSTALLING THE HORIZONTALSTABILIZER.

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

centerlineofthehorizontalstabilizer,atthetrail-

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 down the backof thetrailing edge of

the stabilizer.

Becauseofthe size of the cowl,it may be nec-

essaryto use a needlevalve extensionfor the

highspeedneedlevalve. Makethis out of suf-

ficient length 1mm wire and install it into the

end of the needle valve. Secure the wire in

placeby tightening the setscrew in theside of

the needle valve.

Trim and cut.

Machine screw M2x6mm.

2) While keeping the back edge of the

cowl flush with the marks, align the front of

thecowl with thecrankshaft of themotor. The

front of the cowl should be positioned so the

crankshaft is in nearly the middle of the cowl

opening.Use thespinnerbackplateasa guide.

Hold the cowl firmly in place using pieces of

masking tape.

INSTALLING THE SPINNER.

Install the spinner backplate, propeller and

spinner cone.

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.

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