Seagull Models EDGE 540 User manual

www.seagullmodels.com

 F)From behind the airplane, look at the

ailerononthe right winghalf. Movethe aileron

sticktotheright. Therightaileronshouldmove

upand the otheraileron should movedown. If

it does not, flip the servo reversing switch on

your transmitter to change the direction.

PREFLIGHT CHECK.

1) Completely charge your transmitter

and receiver batteries before your first day of

flying.

2) Check every bolt and every glue joint

in the EDGE 540 to ensure that everything is

tight and well bonded.

3) Double check the balance of the air-

plane. Do this with the fuel tank empty.

4) Checkthe controlsurfaces. All should

move in the correct direction and not bind in

any way.

5) If your radio transmitter is equipped

withdual rateswitches double checkthat they

are on the low rate setting for your first few

flights.

6) Check to ensure the control surfaces

are moving the proper amount for both low

and high rate settings.

 E)Checkthe throttle. Movingthe throttle

stick forward should open the carburetor bar-

rel. Ifitdoesnot,fliptheservo reversing switch

on your transmitter to change the direction.

 D) Check the rudder. Looking from be-

hindthe airplane, move the rudderstick to the

right. Theruddershould movetothe right. Ifit

does not, flip the servo reversing switch on

your transmitter to change the direction.

8) Properlybalance thepropeller. An out

of balance propeller will cause excessive vi-

bration which could lead to engine and/or air-

frame failure.

We wish you many safe and enjoy-

able flights with your EDGE 540.

7) Check the receiver antenna. It should

be fully extended and not coiled up inside the

fuselage.

EDGE 540 Instruction Manual

1) It is critical that your airplane be bal-

anced correctly. Improper balance will cause

yourplane to losecontroland crash. Thecen-

ter of gravity is locate 9.5cm back from the

leading edge of the wing, measured at wing

tip.

BALANCING.

2) If the nose of the plane falls, the plane

is nose heavy. To correct this first move the

battery pack further back in the fuselage. If

this is not possible or does not correct it, stick

small amounts of lead weight on the fuselage

sides under the horizontal stabilizer. If the tail

of the plane falls, the plane is tail heavy. To

correctthis, move thebattery and receiverfor-

ward orif this is not possible, stick weight onto

the firewall. When balanced correctly, the air-

plane should sit level or slightly nose down

when you lift it up with your fingers.

FLIGHT PREPARATION.

 A) Check the operation and direction of

the elevator, rudder, ailerons and throttle.

 B) Plug in your radio system per the

manufacturer's instructions and turn every-

thingon.

 4) By moving the position of the adjust-

able control horn out from the control surface,

you will decrease the amount of throw of that

control surface. Moving the adjustable con-

trol horn toward the control surface will in-

crease the amount of throw.

INITIAL FLYING/SPORT FLYING

Do not use the aerobatic settings for

initial test flying or sport flying.

Ailerons: 3/16” up 3/16” down

Elevator: 3/8” up 3/8” down

Rudder: 1” right 1” left

AEROBATIC FLYING

Ailerons: 3/8” up 3/8” down

Elevator: 1” up 1”down

Rudder: 2” right 2“left

2) Turn onthe radiosystem, andwith the

trim tabs on the transmitter in neutral, center

the control surfaces by making adjustments

totheclevises or adjustableservoconnectors.

The servo arms should be centered also.

1) We highly recommend setting up the

EDGE 540 using the control throws listed at

right. We have listed control throws for both

Low Rate (initial test flying/sport flying) and

High Rate (aerobatic flying).

 3) When the elevator, rudder and aileron

control surfaces are centered, use a ruler and

check the amount of the control throw in each

surface. The control throws should be

measured at the widest point of each sur-

face!

CONTROL THROWS.

 C) Check the elevator first. Pull back on

theelevator stick. Theelevator halvesshould

move up. If it they do not, flip the servo re-

versing switch on your transmitter to change

the direction.

Wing bolt.

CG=9.5cm.

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 3) Secure the tail wheel bracket in place

using two 3x10mm wood screws. Be careful

not to overtighten the screws.

 2) Using a pen, mark the locations of the

two mounting screws. Remove the tail wheel

bracket and drill 1mm pilot holes at the loca-

tions marked.

1) Plug the six servo leads and the switch

lead into the receiver. Plug the battery pack

lead into the switch also.

2) Wrap the receiver and battery pack in

the protective foam rubber to protect them

from vibration.



3) Route theantennain theantennatube

inside the fuselage and secure it to the bot-

tom of fuselage using a plastic tape.

INSTALLING THE BATTERY-RECEIVER.

Tiewrap.

Receiver.

Battery.

Tiewrap.

See pictures below.

MOUNTING THE CONTROL CLASP.

ATTACHMENT WING-FUSELAGE.

Attach the aluminium tube into fuselage.

Insert two wing panels as pictures below.

Antenna.

Controlclasp.

2x20mm.

2 screws.

EDGE 540 Instruction Manual

INSTALLING TAIL STRUT SYSTEM.

The tail strut system assembly follow

pictures below.

 1)Set the tail wheel assembly in place on

the plywood plate. The pivot point of the tail

wheel wire should be even with the rudder

hinge line and the tail wheel bracket should

be on the plywood plate.

MOUNTING THE TAIL WHEEL.

Alumium trap.

3x10cm(2pcs).

3x10mm.

Alumium

trap.

63mm.

Turnbuckle.

Plastic clip.

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 2) Elevatorandrudderpushrods assembly

follow pictures below.

1) Thread one clevis and M2 lock nut on

toeachelevator controlrod. Threadthe horns

onuntil they areflush with theends of thecon-

trol rods.

ELEVATOR - RUDDER PUSHROD

INSTALLATION.

Right side.

Elevator control horn.

Left side.

Elevator

control horn.

Rudder

control horn.

Rudderpushrod.

Elevatorpushrod.

Throttle.

Rudder.

Elevator.

Clevis.

Controlhorn.

Rudderpushrod.

Elevatorpushrod.

EDGE 540 Instruction Manual

M2 lock nut. Snapkeeper.

M2clevis.

Repeat the procedure for the other wing.

ELEVATOR - RUDDER CONTROL HORN

INSTALLATION.

 4) Install the rudder controlhorn using the

same method as with the elevator control

horns.

Wing.

Aileron.

2 sets.

3x35mm.

M2 lock nut.

M3lock nut.

M3nut.

Aluminium washer.

M3 control horn.

Wing bottom.

Aileroncontrol horn.

Wing bottom.

 1) Install the elevator control horn using

the same method as with the aileron control

horns.

 2) Position the elevator control horn on

the both side of elevator.

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Secure the servos with the screws pro-

vided with your radio system.

Wing bottom.

Repeat the procedure for orther wing

haft.

Wing panel

bottom.

String.

Electric wire.

Pull.

AILERONCONTROLHORN INSTALLATION

2 sets.

3x40mm.



1) Aileron control horn:

Mix a small amount of 30 minute epoxy and

lightly coat the inside of the hole in the aileron

and the control horn screw.

Wing.

Aileron.

drillhole

3.2mm.

Wing bottom.

Plastic tape.

Aileronelectric.

EDGE 540 Instruction Manual

5) Slide the vertical stabilizer back in

place. Using a triangle, check to ensure that

thevertical stabilizeris aligned 90º to thehori-

zontal stabilizer.

90º Vertical

Stabilizer.

Horizontal

Stabilizer.

Set the stabilizer in place and realign. Double

checkallofyourmeasurementsoncemorebe-

foretheepoxycures.Holdthestabilizerinplace

with T-pins or masking tape and remove any

excess epoxyusinga paper toweland rubbing

alcohol. Allow the epoxy to fully cure before

proceeding.

C/Aglue.

Rudder.

6) When you are sure that everything is

alignedcorrectly,mixupagenerous amount of

30MinuteEpoxy. Applyathinlayertothemount-

ingslotinthetopofthefuselageandtothesides

and bottom of the vertical stabilizer mounting

area. Applyepoxytothebottomandtopedges

of the filler block and to the lower hinge also.

When cutting through the covering to re-

moveit, cutwith onlyenough pressure to

only cut through the covering itself. Cutting

into the balsa structure may weaken it.

Because the size of servos differ, you

mayneedtoadjustthesizeoftheprecutopen-

ing in the mount. The notch in the sides of

themountallowtheservoleadtopassthrough.

INSTALLING THE AILERON SERVOS.

Using a small weight (Weighted fuel pick-up

workswell)and string, feedthe string through

the wing as indicated.

String.

Small weight.

Servos.

Small weight.

String.

Attach the string to the servo lead and

carefully thread it though the wing. Once you

havestringthe lead throughtthewing, remove

the string so it can use for the other servo

lead.Tape the servo lead tothewingtoprevent

it from falling back into the wing.

Electric wire.

String.

Wing bottom.

String.

Small weight.

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Covered wood

filler piece.

 8) After the epoxy has fully cured, re-

move the masking tape orT-pins used to hold

the stabilizer in place. Carefully inspect the

glue joints. Use more epoxy to fill in any gaps

that may exist that were not filled previously

and clean up the excess using a paper towel

and rubbing alcohol.

Remove covering.

VERTICAL STABILIZER INSTALLATION.

Hinge.

2) Slidethe verticalstabilizer intothe slot

in the top of the fuselage. The rear edge of

thestabilizer shouldbeflushwiththerearedge

of the fuselage and the lower rudder hinge

should engage the precut hinge slot in the

lowerfuselage. The bottomedge ofthe stabi-

lizer should also be firmly pushed against the

top of the horizontal stabilizer.

Hingeslot.

1) Using a modeling knife, remove the

covering from over the precut hinge slot cut

intothelowerrearportion of thefuselage. This

slot accepts the lower rudder hinge.

3) While holding the vertical stabilizer

firmly in place, use a pen and draw a line on

each side of the vertical stabilizer where it

meets the top of the fuselage.

4) Remove the stabilizer. Using a mod-

eling knife, remove the covering from below

the lines you drew.

Pen.

Remove

covering.

EDGE 540 Instruction Manual

Removecovering.

2)Usingamodelingknife,carefullyremove

thecovering at mountingslot of horizontalsta-

bilizer ( both side of fuselage).

 3) Slide the stabilizer into place in the pre-

cut slot in the rear of the fuselage. The stabi-

lizer should be pushed firmly against the front

of the slot.

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 downthe backof thetrailing edgeof

the stabilizer.

 6) Using a modeling knife, carefully re-

move the covering that overlaps the stabilizer

mounting platform sides in the fuselage. Re-

move the covering from both the top and the

bottom of the platform sides.

 7) When you are sure that everything is

aligned correctly, mix up a generous amount

of 30 Minute Epoxy. Apply a thin layer to the

topand bottomof the stabilizermounting area

and to the stabilizer mounting platform sides

in the fuselage. Slide the stabilizer in place

and realign. Double check all of your mea-

surementsonce more beforetheepoxy cures.

HoldthestabilizerinplacewithT-pinsormask-

ing tape and remove any excess epoxy using

a paper towel and rubbing alcohol.

 5) Removethe stabilizer. Usingthe lines

youjust drewas aguide, carefullyremove the

covering from between them using a model-

ingknife.

Removecovering.

 4) With the stabilizer held firmly in place,

use a pen and draw lines onto the stabilizer

where it and the fuselage sides meet. Do this

on both the right and left sides and top and

bottom of the stabilizer.

Pen.

When cutting through the covering to re-

move it, cut with only enough pressure

toonly cut through the coveringitself. Cutting

into the balsa structure may weaken it.

COVERED WOOD FILLER PIECE

INSTALLATION.

Center line.

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