3w 3w-55xi User manual

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Operation Manual

3W-55Xi / CS

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Dear customer,

Thank

you

for

placing

your

confidence

in

3W.

Our

long

experience

(since

1985)

in

designing

and

producing

model

airplane

engines,

ranging

from

single

up

to

six

cylinde

r,

has

been

utilized

to

provide

you

with

the

best

engine

possible.

Our

in-house

engineer

has

been

designing

two

and

four

stroke

engines

for

gasoline

and

diesel

for

38

years.

We

are

continually

looking

at

new

technologies

and

working

on

new

designs.

Please

be

assured

that

we

at

3W

always

strive

to

provide

you

with

engines

that

are

s

t

ate

of

the

art.

You can count on your 3W engine to have:

•

a

high

level

of

precision

•

high

torque

in

the

low

rpm

range

•

excellent

running

characteristics

•

a

long

life

•

lots

of

power

•

And

a 36

month

conditional

warranty.

The product range of this engine includes the follwoing types:

direction of rotation

modelrange:

View to propeller

: Art. Nr.:

We wish you plenty of fun and success with your new 3W engine.

Sincerely,

The

3W T

eam

3W-55Xi Counterclockwise 10.000.570

3W-55Xi Clockwise 10.000.571

3W-55Xi CS Counterclockwise 10.000.580

3W-55Xi CS Clockwise 10.000.581

3W-55Xi CS TS Counterclockwise 10.000.585

3W-55Xi CS TS Clockwise 10.000.586

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Limited Warranty

We

grant

a 36

month

warranty

from

the

date

of

purchase.

This

warranty

is

limited

to

the

replacement

of

defective

p

ar

ts

that

are

a

direct

result

of

faulty

material

or

manufacturing.

No

claim

concerning

a

defect

caused

by

non-compliance

with

ins

t

allation

or

operation

instructions,

mishandling,

unsui

t

able

sp

are

p

ar

ts

nor

unskilled

re

pairs

will

be

acknowledged.

Please

ask

your

dealer

to

fill

out

a

warranty

certificate

for

you

at

the

time

of

purchase.

Impor

t

ant:

Keep

this

certificate

in

a

safe

place

as

this

warranty

will

not

be

honored

without

it.

The

original

receipt

is

also

required.

The safe operation of the engine is our primaryconcern. Therefore anyalteration, modification

or addition to the engine is not recommended and will void your warranty immediately.

In case

of

defect

during

the

period

of

garantee,

return

this

product

to

your

nearest 3W

-Dealer

or

to

3W

-Germany

direct,

at

your

cos

t

s.

The

garantee

is

limited

to

the value

of

the

product.

The

guarantee does

not

cover

any

damage

caused

by

misuse

or

neglect, acciden

t

s, abrasion, exposure

to

extreme temperatures,

solven

t

s, acids,

wate

r,

normal

wear

and tear

or

damage

by

common

carrier.

Warning!

This engine is not a toy! Serious injury and /or death can occur from its misuse! READ and

become familiar with this entire instruction manual. LEARN the engine's applications,

limitations, and possible hazards.

When working on the engine(s) it is strictly prohibited to block the piston respectivly

crankshaft from moving by using a tool touching / hitting the piston crown / top.

Reason:

Distortion

of

the

crown

/

top

where

the

tool

touches

/

hits

the

piston,

material

structure

will

be

changed

as

well

as

the

ou

t

side

diameter

/

conture

of

the

piston.

What

could

happen:

Hole

in

the

piston

and

/

or

piston

will

size

a

f

ter

a

running

time

which

cannot

be

determind.

To

block

the

cranksha

ft

and

/

or

piston

from

moving

a

tool

has

to

be

used

clamping

the

propeller

hub

onl

y.

Only use 3W mufflers or

3 W-model engines GmbH licensed third-party products.

For operation of 3W engines Only original 3W ignitions

be allowed to use.

Otherwise there is guaranteed loss.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Important!

For

your

safety

and

for

the

safety

of

those

around

you

--

also

to

learn

what

is

required

to

main

t

ain

your

warranty

-

we

strongly

advise

you

to

read

this

entire

manual

carefully

BEFORE

you

s

t

art

using

the

engine.

Safe

Operation

and

3W's

Conditional

W

arranty

For

safe

operation

and

to

main

t

ain

your

warranty

you

must:

•

Have

a

properly

designed

engine

box

on

your

model

•

Mount

the

engine

correctly

•

Provide

adequate

air

flow

and

cooling

for

the

engine

•

Provide

adequate

air

flow

and

cooling

for

the

exhaust

•

Use

an

approved

propeller

and

spinner

•

Drill

the

propeller

correctly

•

Balance

the

propeller

correctly

•

T

ighten

the

propeller

bolts

correctly

and

check

them

regularly

•

Properly

mount

your

ignition

to

avoid

overheating

•

Use

the

correct

battery

and

regulator

(if

applicable)

for

your

ignition

•

Use

the

correct

switch

for

your

ignition

•

Use

an

appropriate

fuel

t

ank,

plumbing

lines,

and

ins

t

allation

•

Use

the

appropriate

fuel

for

break

in

and

a

f

ter

break

in

(gas

and

oil)

•

Insure

adequate

filtering

of

your

fuel

•

Main

t

ain

your

engine

properl

y,

keeping

it

clean,

etc.

•

Use

a

pre-flight

check

list

before

flying

your

model

•

Secure

your

model

properly

when

s

t

arting

•

Not

use

your

fingers

or

hand

to

s

t

art

your

model

•

Adjust

your

carburetor

correctly

•

Not

adjust

your

carburetor

while

the

engine

is

running

•

Insure

that

your

s

p

ark

plug

is

in

good

condition

and

is

secured

correctly

•

Insure

that

your

ignition

wires

are

not

frayed

and

are

protected

•

Insure

that

your

ignition

cap

is

securely

mounted

•

Keep

all

people

behind

the

line

of

the

prop

•

Do

not

put

anything

(i.e.,

fingers,

body

p

ar

t

s,

objec

t

s,

et

al)

into

the

ro

t

ating

propeller

•

Keep

children

awa

y.

All

spec

t

ators

should

be

kept

a

safe

dis

t

ance

away

from

the

running

engine.

•

W

ear

proper

ap

p

arel.

Do

not

wear

loose

clothing,

gloves,

neckties,

jewelry,

or

neck

straps

for

your

radio

which

may

get

caught

in

the

moving

propeller.

•

Always

wear

eye

protection

when

s

t

arting

the

engine.

•

Do

not

operate

this

engine

if

you

are

under

the

influence

of

any

drugs,

alcohol

or

medication

that

could

a

f

fect

your

ability

to

use

the

engine

properl

y.

Disclaimer

We

cannot

control

how

safely

our

produc

ts

will

be

used.

And,

therefore

we

do

not

accept

any

responsibility

for

damage,

or

injury

from

their

usage.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Engine Installation

The

engine

should

be

mounted

on

a

motor

box

that

will

in

turn

mount

to

the

fuselage.

A

quadrilateral

shape

(gradually

increasing

in

size

as

it

goes

away

from

the

motor)

provides

the

best

circulation

of

air.

The

reason

for

using

a

motor

box

rather

than

mounting

the

engine

directly

to

the

fuselage

is

that

the

cylinder(s)

need

enough

room

around

them

to

provide

proper

airflow

over

and

away

from

them

The

motor

box

should

be

sti

ff

enough

to

prevent

engine

vibration

and

it

should

also

have

a

solid

firewall.

The

firewall

of

the

motor

box

should

be

made

from

1/4"

aircra

ft

plywood

for

engines

up

to

106cc,

or

3/8"

aircra

ft

plywood

for

engines

in

the

150cc

class. For

builders

experienced

with

making

composite

motor

boxes;

a

com

p

arable

strength

should

be

at

t

ained.

example image

It

is

absolutely

vi

t

al

to

ensure

a

tension

free

mounting

of

the

engine.

The

surface

that

the

engine

is

mounted

on

must

be

on

an

even

plane

(i.e.,

a

flat

and

level

surface)

so

that

there

is

no

strain

on

the

engine

i

t

self.

Again,

this

is

a

vi

t

al

and

critical

requirement

to

avoid

distorting

the

crank

case,

ruining

the

engine,

and

voiding

your

warranty.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Mount

the

engine

to

the

motor

box

with

high

tensile

bol

t

s.

Once

mounted

you

now

have

a

sub-

assembly

that

you

can

mount

to

your

fuselage.

S

p

acers

can

be

made

from

hardwood

dowels

(3/4"

to

1")

or

machined

aluminum

bar

stock

to

adjust

your

down

and

side

thrust.

These

sp

acers

should

go

between

the

motor

box

and

fuselage

and

not

the

motor

box

and

engine.

It is strictly prohibited:

To

mount

the

engine

directly

onto

sp

acers

for

the

following

reasons:

a.

If

the

sp

acers

are

too

long

and/or

not

sti

ff

enough

the

engine

could

vibrate

leading

to

the

cranksha

ft

s

t

arting

to

twist,

further

leading

to

the

crank

case

being

destroyed.

b.

If

sp

acers

are

used

to

adjust

the

side

and/or

down

thrust

and

this

sp

acing

no

longer

provides

an

even

plane

(i.e.,

a

flat

and

level

surface)

the

crank

case

will

be

distorted,

leading

to

the

cranksha

ft

s

t

arting

to

twist,

further

leading

to

the

crank

case

being

destroyed.

To

mount

the

engine

directly

onto

a

large

(wide)

former

or

firewall

for

the

following

reason:

a.

If

the

cylinder(s)

is/are

too

close

to

this

wide

former

or

firewall,

the

floating

air

cannot

p

ass

freely

over

and

then

away

from

the

cylinder(s).

Cavi

t

ating

hot

air

can/will

overheat

the

engine.

Engine Cooling

A

proper

cooling

system

is

vi

t

al

for

any

engine.

An

air

cooled

engine

requires

an

appropriately

sized

air

in

t

ake.

Also

to

keep

this

air

cooling

process

working

the

incoming

air

must

be

exhausted.

Further,

the

exhaust

air

outlet

should

be

four

times

(4X)

the

size

of

the

cool

air

in

t

ake.

Example:

•

10

square

inches

of

air

in

t

ake

area

would

require

•

40

square

inches

of

exhaust

air

outlet

area

It

is

up

to

you

to

insure

that

the

air

flows

freely

to,

over,

and

away

from,

the

hot

cylinder(s)

and

mu

f

fler(s).

Please

refer

to

Engine

Ins

t

allation

for

motor

box

considerations,

and

to

the

following

example image

ti

ps

on

ba

f

fling.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Baffling

Deflecting

of

the

air

(ba

f

fling)

to

and

over

the

cylinder(s)

is

highly

recommended

for

engine

cooling.

The

idea

is

to

get

all

of

the

cool

air

that

is

coming

through

the

air

in

t

ake

opening(s)

to

hit

the

middle

of

the

cylinder(s)

directl

y,

and

then

be

forced

over

the

cylinder(s),

creating

turbulent

air

moving

through

the

cylinder(s)

fins.

The

freely

flowing,

but

directed

and

turbulent

air

between

the

fins

provides

the

maximum

cooling

for

an

air

cooled

engine.

Without

ba

f

fling

(meaning

wood

or

composite

dampers

that

direct

the

airflow)

the

air

will

t

ake

the

p

ath

of

least

resis

t

ance.

Some

incoming

air

will

bounce

o

ff

the

cylinder(s)

and

the

rest

will

escape

around

the

cylinder(s)

without

coming

into

con

t

act

with

the

cylinder(s).

Engine in pusher operation:

Impor

t

ant

note!

When

engines

are

used

operating

in

pusher

configuration

cooling

ge

ts

critical

and

special

attention

has

to

be

given

to

an

e

f

fective

cooling

method.

A

good

cooling

system

layout

depends

on

the

actual

location

(position)

of

the

engine

in

the

fuselage.

Operating temperature

To be able to check the cylinder head temperature ( CHT ) a thermo element has to be installed which fits

under the spark plug ( M 10 thread ). Optimum operating temperature range : 180°C - 220°C. In this

range piston, spark plug and combustion chamber will be free of remains. Maximum temperature of

270°C should not be exceeded. During a certain time at full speed the temperature could be 250°C.

Colour of the spark plug should be : light or middle brown. A grey / gray colour is a typical sign for over

heating. Temperatures above 270°C are critical and over 300°C, piston can seize and could completely

damage the engine.

Temperatures below 180°C create remains ( carbon ) on the piston crown. Increasing remains hit the

cylinder and cause abnormal running noises ( knocking ) which will increase the load of the needle

bearings and can destroy them. Under extreme conditions the crankshaft can break and a complete

damage of the engine will be the result.

Rear induction

Carburetors,

whether

front

or

rea

r,

require

a

steady

supply

of

fresh

air.

The

best

way

to

supply

air

to

a

rear

carburetor

is

by

ins

t

alling

an

air

scoop.

Some

have

thought

to

drill

holes

into

the

fuselage

near

the

carburetor

area

rather

than

creating

an

air

scoop

for

the

carburetor.

This

does

not

work,

in

fact

it

will

create

a

vacuum

e

f

fect

that

will

draw

the

air

away

from

the

carburetor!

Again,

you

should

ins

t

all

an

air

scoop

into

the

front

of

the

plane

which

will

supply

air

into

the

fuselage.

This

air

will

then

need

to

flow

out

of

the

fuselage.

Drill

exit

holes

into

the

rear

area

of

the

fuselage

for

this

purpose.

Impor

t

ant:

The

interior

of

the

fuselage

must

be

sealed

to

prevent

damage

from

gasoline

that

sprays

from

the

carburetor.

Use

a

thin

epoxy

or

other

appropriate

fuel

proofing

method.

Do

not

overlook

this

step

as

gasoline

will

melt

some

materials

like

S

tyrofoam

very

quickl

y.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Ignition

Consideration

needs

to

be

given

to

the

placement

of

the

electronic

ignition

module.

A

void

placing

the

module

in

the

p

ath

of

hot

air.

Impor

t

ant:

If

the

electronic

ignition

overhea

ts

it

will

malfunction

(e.g.,

backfiring

or

shutting

down).

Ignition details:

•

The

red

cable

is

positive

(+)

•

The

ignition

timing

has

been

set

at

our

factory

•

When

fitting

a

new

ignition

it

is

impor

t

ant

to

achieve

the

correct

coordination

of

the

sensor(s)

to

the

magne

ts

Refer to our special ignition description for further information

Canister mufflers

To

prevent

damage

to

the

header(s)

a

flexible

support

bracket

is

required

to

mount

the

canister(s).

The

location

for

this

bracket

should

be

at

the

canister's

center

of

gravit

y.

3W

canisters

have

a

reinforcement

ring

at

this

location.

example image

We

suggest

creating

two

com

p

artmen

ts

in

the

front

section

of

the

fuselage

by

ins

t

alling

a

horizon

t

al

tray.

Fuel

t

anks,

batteries,

and

other

equipment

can

be

mounted

on

top

of

this

tray;

the

canister(s)

being

ins

t

alled

below

it.

Close

o

ff

the

lower

com

p

artment

at

i

ts

rear

with

an

angled

former.

Locate

this

former

1"

behind

the

back

of

the

canister(s).

a

hole

in

the

bottom

of

the

fuselage

just

under

the

rear

of

the

canister(s).

In

this

way

the

air

coming

from

the

front

of

the

model

can

flow

over

the

canister(s)

and

then

be

deflected

by

the

angled

former

so

as

to

exit

through

the

hole

in

the

fuselage.

Do

not

forget

to

reinforce

around

this

hole.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Important:

This exit area needs to be four times (4x) as large as the intake area.

Propellers

•

Only

use

propeller

brands

and

sizes

that

are

approved

for

your

engine

•

The

propeller

blades

must

be

of

the

same

length

•

The

propeller

must

be

flat

(Y

ou

can

check

for

flatness

by

putting

the

propeller

on

a

level

surface.

The

maximum

di

f

ference

of

the

blade

heigh

ts

should

be

no

more

than

1/64".)

•

The

propeller

ti

ps

must

have

an

identical

shape.

This

is

especially

impor

t

ant

when

using

3

or

4

blade

propellers.

•

Y

ou

must

use

a

drill

press

to

drill

your

propeller.

•

Y

ou

must

drill

the

propeller

from

the

rea

r.

•

A

drill

guide

is

recommended,

but

the

propeller

washer

can

be

used

as

a

drill

template.

(Fix

the

propeller

washer

onto

the

propeller

in

the

center-bore

using

a

bolt

and

nut.

Drill

one

hole;

put

one

of

the

propeller

bolts

into

the

hole.

Continue

until

the

last

bolt

is

used.)

•

If

you

cannot

hand

tighten

all

of

your

prop

bolts

easily

then

you

have

not

drilled

the

propeller

correctl

y.

This

can

lead

to

sheared

propeller

bol

t

s.

•

Balancing

your

propeller

is

absolutely

critical

to

the

health

of

your

engine.

Y

ou

must

keep

your

propeller

balanced.

(Propeller

balancers

are

available

from

DUBRO,

and

others.)

•

Always

remember

that

when

the

engine

is

running

every

person

must

s

t

ay

behind

the

line

of

the

ro

t

ating

propeller;

never

to

the

side

or

the

front!

Carburetor settings

Before

each

engine

is

shipped

it

has

to

p

ass

QC

and

is

then

test

run.

We

do

a

basic

adjustment

of

the

carburetor

needles

at

that

point.

highspeed

needle

H:

1

low

speed

needle

L:

1

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Important:

Do

not

remove

the

carburetor

spring

as

the

spring

hel

ps

keep

the

carburetor

butterfly

aligned

properl

y.

Merely

release

the

ends

of

the

spring

so

that

it

no

longer

holds

the

butterfly

closed.

Carburetor Linkage

Included

with

your

engine

is

a

me

t

al

bracket

to

extent

your

carburetor

pushrod

horn.

Fix

this

bracket

onto

the

carburetor

horn

with

a

2.6m

machine

screw

and

nut.

Then

solder

the

arm

in

place.

Refer

to

the

at

t

ached

illustration.

example image

Note:

The

use

of

a

so

ft

pushrod

for

the

throttle

(plastic

or

nyrod)

is

not

recommended.

Use

a

me

t

al

or

carbon

fiber

pushrod

with

a

plastic

ball

joint

or

plastic

clevis

at

each

end.

This

will

keep

your

RPM

much

more

consistent

and

accurate

around

idle

where

it

really

coun

t

s.

Engine Break In

•

Use

a

2-stroke

petroleum

based

oil

(preferably

ashless)

as

this

type

of

oil

has

a

good

honing

e

f

fect

which

hel

ps

to

break

in

the

engine

•

Use

a

mixture

of

32-1

or

even

30-1

•

Use

this

fuel

mixture

for

approximately

2-3

hours

of

run

time

•

Use

a

high

Oc

t

ane

unleaded

fuel

(from 92

Oc

t

ane

is

ideal)

We

suggest

s

t

arting

the

break

in

process

of

the

engine

on

a

test

s

t

and;

for

approximately

one

hou

r.

This

time

should

be

used

to

get

familiar

with

the

engine.

Do

not

run

the

engine

at

full

throttle

for

more

than

ten

seconds

during

this

test

s

t

and

break

in.

The

reason

for

this

is

that

you

are

not

getting

the

normal

cooling

e

f

fect

that

you

would

if

the

engine

was

in

a

model

that

was

flying.

Another

method

that

can

be

used

for

break

in

would

be

to

set

the

engine

between

2000-2500

rpm

and

let

it

run

for

4

hours.

A

f

ter

that

the

engine

would

basically

be

broken

in.

Note:

For

break-in

a

smaller

propeller

is

recommended.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Important:

Remember

that

when

the

engine

running

ever

person

must

s

t

ay

behind

the

line

of

the

ro

t

ating

propeller;

never

to

the

side

or

the

front!

A

f

ter

Initial

Break

In

•

Use

high

grade

fully

synthetic

2-stroke

oil

•

Use

the

oil

manufacturer's

recommended

gas

to

oil

mixture

•

Use

a

high

Oc

t

ane

unleaded

fuel

(98

Oc

t

ane

is

recommended)

•

We

use

3W

2-stroke

oil

in

our

engines

here

in

German

y,

but

there

are

other

high

grade

2-stroke

oils

that

will

perform

well.

Note:

The

engine

needs

12-20

hours

running

time

for

the

break

in

process

to

be

100%

complete.

Additional installation notes

•

There

must

be

a

minimum

4"

se

p

aration

between

anything

at

t

ached

to

the

receiver

and

all

things

the

ignition

(i.e.,

the

ignition

i

t

self,

and

i

ts

wires,

battery,

and

switch)

•

Use

a

plastic

spiral

sheath

to

protect

the

ignition

cables

•

Never

remove

the

sparkplug

cap

by

using

a

mechanical

aid

like

pliers.

Only

remove

the

cap

by

hand

using

a

twist/pull

movement.

•

The

sp

ark

plug

cap

must

be

firmly

seated

to

the

sp

arkplug.

If

the

sp

ark

plug

cap

is

not

firmly

seated

there

is

a

very

good

possibility

that

you

will

experience

radio

interference.

•

Use

only

ignition

on/o

ff

switches

recommended

by

3W

•

6

volts

is

required

for

the

ignition.

•

Do

not

skimp

on

your

throttle

servo.

A

high

quality

throttle

servo

is

recommended

for

reliable

and

accurate

operation

of

the

carburetor.

•

Never

fill

the

fuel

t

ank

via

the

carburetor

fuel

line

•

Use

the

same

I.D.

for

t

ank

ventilation

and

the

carburetor

fuel

line

•

Use

small

plastic

cable

ties

on

all

fuel

line

to

fitting

connections.

•

We

recommend

cutting

the

fuel

line

in

the

fuel

t

ank

in

half.

And,

then

joining

them

back

together

with

a

brass

tube.

The

brass

tube

preven

ts

a

folding

of

the

fuel

line

with

could

cut

the

fuel

supply

for

the

engine

(see

t

ank

photo).

•

The

use

of

soldered

on

DUBRO

barbs

on

the

ends

of

the

brass

tubing

is

highly

recommended.

Again,

always

secure

the

fuel

line

with

small

plastic

cable

ties.

example image

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Warning!

Failing

to

read

and

follow

all

of

the

instructions

in

this

manual

can

lead

to

unsafe

conditions

and

damaged

equipment.

Here

are

some

examples:

•

Unbalanced

propellers

can

damage

the

engine's

ball

bearings,

needle

bearings,

even

cause

the

cranksha

ft

to

break

•

Incorrectly

drilled

propellers

can

lead

to

sheered

propeller

bolts

further

leading

to

acciden

ts

and

crashes

•

Loose

propeller

bolts

can

also

lead

to

sheered

propeller

bolts

further

leading

to

acciden

ts

and

crashes.

Check

these

bolts

before

s

t

arting

your

engine.

•

Flipping

the

prop

with

your

hand

or

fingers

can

lead

to

serious

acciden

t

s!

Always

use

a

rubber

stick

to

s

t

art

the

engine!

•

Not

having

the

plane

secure

can

be

lead

to

serious

acciden

t

s.

Depending

on

i

ts

size

use

one,

two,

or

more

helpers

to

secure

your

model.

Always

tell

your

helpers

to

be

ready

for

the

model

to

s

t

art

at

full

power.

Remembe

r,

these

engines

have

a

high

power

output.

•

Do

not

put

your

finger(s),

any

items,

or

any

other

p

ar

ts

of

the

body

into

the

ro

t

ating

propeller.

•

Never

tune

the

carburetor

whilst

engine

is

running!

S

top

the

engine.

T

une

the

carburetor

and

s

t

art

the

engine

again.

Repeat

this

procedure

until

the

carburetor

is

properly

tuned.

•

Make

sure

that

no

gasoline

will

be

splashed

into

the

hot

mu

f

fler(s).

•

Only

3W

mu

f

flers,

or

mu

f

flers

authorized

by

3W

with

an

accep

t

ance

(test)

number,

should

be

used.

•

Only

3W

-ignition

systems

should

be

used

for

proper

operation.

Important:

Using

unauthorized

produc

ts

or

failing

to

follow

the

instructions

in

this

manual

will

void

your

warranty

immediately.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Pilots check list

We

strongly

recommend

checking

the

following

agenda

for

your

own

safety

before

s

t

arting!

•

Check

the

propeller

bolts

for

tightness

•

Check

that

the

spinner

is

firmly

at

t

ached

•

Check

the

propeller

for

possible

damage

•

Check

to

be

sure

you

have

the

throttle

position

at

idle

•

Check

all

batteries

•

Check

servo

functions

•

Check

to

see

that

the

ignition

switch

is

OFF

•

Check

pressure

(6-8

bar)

system

of

retract

(if

applicable)

•

Check

all

linkages

for

play

•

Check

your

wheels

for

possible

damage

and

easy

running

•

Check

the

wing

mounting

for

tight

fit

and

proper

at

t

achment

•

Check

the

canopy

for

tight

fit

and

proper

at

t

achment

•

When

s

t

arting

the

engine

one

person

(minimum)

has

to

hold

the

model

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Starting Procedure

If

you

have

read

and

understood

this

entire

manual,

and

followed

i

ts

recommendations,

you

are

ready

to

s

t

art

your

new

engine.

•

Use

a

rubber

stick

to

s

t

art

the

engine.

Never

use

your

hand

or

fingers!

•

Insure

that

your

receiver

batteries

are

charged

and

your

receiver

is

on

•

Insure

that

your

ignition

battery(s)

are

charged

•

Insure

that

your

transmitter

is

on,

and

that

your

throttle

is

set

to

low

•

Insure

that

your

plane

is

properly

and

safely

anchored

(use

one,

two,

or

more

people

if

necessary)

•

Close

the

choke(s)

•

Switch

on

the

ignition

•

Flip

the

propeller

until

the

engine

"po

p

s"

(s

t

ar

ts

and

sto

ps

quickly)

•

W

ait

for

the

propeller

to

stop

spinning,

turn

o

ff

the

ignition,

and

open

the

choke(s)

•

Switch

the

ignition

back

on

•

Flip

the

propeller

again

until

the

engine

s

t

ar

ts

•

W

arm-up

the

engine

for

at

least

20

seconds

•

Due

to

the

high

power

and

torque

of

the

engine(s)

it

is

not

recommended

to

open

the

throttle

abruptly

Precision tuning of the carburetor

The

use

of

a

t

achometer

is

highly

recommended.

And,

again,

never

adjust

the

needles

while

the

engine

is

running!

1.

Using

the

t

achometer

tune

the

engine

for

maximum

power

with

the

high

needle

(H).

2.

Again

using

the

t

achometer;

richen

the

high

needle

(H)

until

the

motor

runs

100-200 RPM

less

than

the

maximum

RPM.

Now

you

are

tuned

slightly

rich

on

the

high

needle

(H).

3.

Let

the

engine

run

at

idle

for

one

minute.

Check

to

see

that

the

idle

RPM

remains

cons

t

ant.

4.

If

the

idle

RPM

drops

until

the

engine

sto

p

s;

the

low

needle

(L)

is

too

rich.

Lean

the

low

needle

(L)

until

a

cons

t

ant

idle

RPM

is

achieved.

5.

Check

the

transition

with

a

quick

throttle

advance.

The

engine

should

not

sound

strained

at

any

time.

It

should

sound

like

it

is

making

quick

steady

power;

without

any

hesi

t

ation.

6.

An

optimally

tuned

engine

will

feel

a

bit

rich

a

f

ter

a

cold

s

t

art.

It

will

s

t

art

to

run

right

a

f

ter

it

has

warmed

up

for

approximately

one

minute.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Trouble Shooting

Problem

The

engine

is

flooded

(the

cranksha

ft

housing

is

filled

with

fuel).

Solution

Remove

the

sp

ark

plug;

turn

the

engine

to

a

position

where

the

fuel

runs

out.

The

engine

s

t

ar

ts

a

f

ter

being

choked

but

then

sto

ps

soon

a

f

ter.

The

low

needle

on

the

carburetor

is

probably

too

lean.

Go

back

to

the

recommended

settings

and

adjust

your

carburetor

from

there.

This

problem

may

also

indicate

a

dirty

carburetor

or

faulty

ignition.

The

engine

runs

rough

and

is

vibrating

strongl

y.

Balance

the

propeller.

Check

the

ignition

timing.

Check

your

plumbing

for

air/fuel

leaks.

Check

your

sp

ark

plug

for

carbon

and

check

the

sp

ark

plug

gap.

Check

the

motor

mount

to

be

sure

it

is

rigid.

Check

to

make

sure

the

engine

is

mounted

on

a

level

surface

so

that

the

crankcase

is

free

of

tension.

Check

the

engine

and

propeller

bol

t

s.

The

engine

doesn't

reach

a

normal

RPM

at

full

throttle.

Check

the

carburetor

settings.

Check

to

see

if

the

propeller

is

too

large.

V

erify

that

you

have

the

correct

mu

f

fler

system.

Check

to

see

if

the

engine

is

overheating.

Check

the

ignition

timing.

Check

the

sp

ark

plug

for

defect.

V

erify

you

have

the

correct

gasoline,

oil,

and

have

mixed

them

with

the

correct

ratio.

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

mounting bolt pattern

Operation manual

3W Modellmotoren GmbH, Hasswiesenstrasse 22, 63322 Rödermark

www.3w-modellmotoren.de

Garantie-Bedingungen

Wir

geben

auf

unsere

Geräte

36

Monate,

oder 1200 Betriebsstunden,

V

ollgarantie

ab

V

erkaufsdatum.

Die

Garantie

ist

ausschließlich

beschränkt

auf

den

kostenlosen

Ersatz

defekter

T

eile,

deren

Mängelursache

Konstruktions-

oder

Materialfehler

sind.

Wir

möchten

ausdrücklich

darauf

hinweisen,

dass

die

Garantie

nur

dann

erfüllt

wird,

wenn

der

Garantieanspruch

gleichzeitig

mit

dem

Re

p

araturau

f

trag

geltend

gemacht

wird.

Beachten

Sie

auch

bitte,

dass

wir

einen

Garantieanspruch

nicht

akzeptieren

können,

wenn

die

S

törung

durch

unsachgemäße

Behandlung

(siehe

Gebrauchsanweisung),

durch

natürliche

Abnutzung,

durch

V

erwendung

fremder

Ersatzteile

oder

Re

p

araturen

durch

andere

en

t

stehen.

Lassen

Sie

auf

dieser

Garantiekarte

das

Kaufdatum

durch

den

Händler

eintragen,

oder

he

f

ten

Sie

die

Kaufquittung

dazu.

Bewahren

Sie

diese

Garantiekarte

sorgfältig

auf,

denn

ein

Garantieanspruch

ist

leider

hinfällig,

wenn

sie

bei

einer

Reklamation

nicht

vorgelegt

werden

kann.

Diese Garantie ist nur gültig, wenn

sie zusammen mit einem Kaufsbeleg

vorgewiesen wird (Ladenquittung).

Bei nicht autorisierten Änderungen

Erlischt die Garantie.

Guarantee conditions

We

grant

a 36

month

guarantee

as

from

purchase

date or 1200

operating hours.

This

guarantee

applies

solely

to

the

free

replacement

of

defective

p

ar

ts

resulting

from

faulty

material

or

manufacturing.

We

point

out that

guarantee

is

e

f

fective

only

if

joined

to

the

ap

p

aratus

to

be

re

p

aired.

Na

claim

conceming

a

defect

caused

by

noncompliance

with

operation

instructions,

mishandling,

unsui

t

able

sp

are

p

ar

ts

and

unskilled

re

p

airs

will

be

acknowledged.

Please

ask

your

dealer

to

fill

in

this

guarantee

at

time

of

purchase.

Keep

this

certificate

carefully

because

your

claim

is

valid

only

upon

presen

t

ation

of

this

document.

This guarantee is valid only

when accompanied with the

official shop receipt. Warranty

terminates if unauthorised

modifications are done.

3W 3W-55Xi User manual

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