O.S. engine MAX 140RX FI Guida all'installazione

It is of vital importance, before attempting to operate your engine,

to read the general 'SAFETY INSTRUCTIONS AND WARNINGS'

section on pages 2-4 of this booklet and to strictly adhere to the

advice contained therein.

Also, please study the entire contents of this instruction manual,

so as to familiarize yourself with the controls and other features

of the engine.

Keep these instructions in a safe place so that you may readily

refer to them whenever necessary.

It is suggested that any instructions supplied with the aircraft,

radio control equipment, etc., are accessible for checking at the

same time.

•

2-4

8-9

10-11

11-13

14-15

15-16

SAFETY INSTRUCTIONS AND

WARNINGS ABOUT YOUR O.S. ENGINE

CONTENTS

INTRODUCTION, FEATURES

BASIC ENGINE PARTS

CONNECTING WITH THE EC-1

EC-1 DISPLAYS AND EXPLANATIONS

LIST OF 140RX-FI USAGE CONDITIONS

INSTALLATION PROCEDURE

LINKAGE AND INITIAL SETTINGS

ENGINE STARTING AND

AIR-FUEL MIXTURE ADJUSTMENT

ENGINE STARTING

FLIGHT ADJUSTMENT

GLOW PLUG

CARE & MAINTENANCE

TROUBLESHOOTING

THREE VIEW DRAWING &

GENUINE PARTS & ACCESSORIES

EXPLODED VIEW

PARTS LIST

Remember that your engine is not a " toy ", but a highly efficient internal-

combustion machine whose power is capable of harming you, or others, if it is

misused or abused. As owner, you, alone, are responsible for the safe operation

of your engine, so act with discretion and care at all times.

If at some future date, your O.S. engine is acquired by another person, we would

respectfully request that these instructions are also passed on to its new owner.

WARNINGS

These cover events which might involve

serious (in extreme circumstances, even fatal )

injury.

NOTES

These cover the many other possibilities,

generally less obvious sources of danger, but

which, under certain circumstances, may also

cause damage or injury.

SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE

■The advice which follows is grouped under two headings according to the

degree of damage or danger which might arise through misuse or neglect.

WARNINGS

Never touch, or allow any object to come into contact with, the rotating

propeller and do not crouch over the engine when it is running.

A weakened or loose propeller may disintegrate or be thrown off and, since propeller

tip speeds with powerful engines may exceed 600 feet(180 metres) per second, it will

be understood that such a failure could result in serious injury, (see 'NOTES' section

relating to propeller safety).

Model engine fuel is poisonous. Do not allow it to come into contact with

the eyes or mouth. Always store it in a clearly marked container and

out of the reach of children.

Model engine fuel is also highly flammable. Keep it away from open flame,

excessive heat, sources of sparks, or anything else which might ignite it.

Do not smoke or allow anyone else to smoke, near to it.

Never operate your engine in an enclosed space. Model engines, like automobile

engines, exhaust deadly carbon-monoxide. Run your engine only in an open area.

Model engines generate considerable heat. Do not touch any part of your

engine until it has cooled. Contact with the muffler(silencer), cylinder

head or exhaust header pipe, in particular, may result in a serious burn.

•

NOTES

This engine was designed for model aircraft. Do not attempt to use it for

any other purpose.

Mount the engine in your model securely, following the manufacturers'

recommendations, using appropriate screws and locknuts.

Be sure to use the silencer (muffler) supplied with the engine. Frequent

exposure to an open exhaust may eventually impair your hearing.

Such noise is also likely to cause annoyance to others over a wide area.

Fit a top-quality propeller of the diameter and pitch specified for the engine

and aircraft. Locate the propeller on the shaft so that the curved face of the

blades faces forward-i.e. in the direction of flight. Firmly tighten the

propeller nut, using the correct size wrench.

Always check the tightness of the propeller nut and retighten it, if

necessary, before restarting the engine, particularly in the case of four-

stroke-cycle engines. A safety locknut assembly is provided. Always use it.

This will prevent the propeller from flying off in the event of a "backfire",

even if it loosens.

If you fit a spinner, make sure that it is a precision made product and that

the slots for the propeller blades do not cut into the blade roots and

weaken them.

Discard any propeller which has become split, cracked, nicked or

otherwise rendered unsafe. Never attempt to repair such a propeller:

destroy it. Do not modify a propeller in any way, unless you are highly

experienced in tuning propellers for specialized competition work such as

pylon-racing.

Use an electric starter for this engine. The wearing of safety glasses is also

strongly recommended.

•

Take care that the glow plug clip or battery leads do not come into contact

with the propeller.

Also check the linkage to the throttle arm. A disconnected linkage could

also foul the propeller.

•

Adjust the throttle linkage so that the engine stops when the throttle stick

and trim lever on the transmitter are fully retarded. Alternatively, the

engine may be stopped by cutting off the fuel supply. Never try to stop the

engine physically.

Take care that loose clothing (ties, shirt sleeves, scarves, etc.) do not come

into contact with the propeller.

Do not carry loose objects (such as pencils, screwdrivers, etc.) in a shirt

pocket from where they could fall through the propeller arc.

Do not start your engine in an area containing loose gravel or sand.

The propeller may throw such material in your face and eyes and cause

injury.

For their safety, keep all onlookers (especially small children) well back (at

least 20 feet or 6 meters) when preparing your model for flight. If you have

to carry the model to the take-off point with the engine running, be

especially cautious. Keep the propeller pointed away from you and walk

well clear of spectators.

Warning! Immediately after a glowplug-ignition engine has been run and is

still warm, conditions sometimes exist whereby it is just possible for the

engine to abruptly restart if the propeller is casually flipped over

compression WITHOUT the glowplug battery being reconnected.

Remember this if you wish to avoid the risk of a painfully rapped knuckle!

•

NOTES

This engine is the MAX-140RX-FI (fuel injection) engine equipped with a

revolutionary fuel supply system that was jointly developed by Futaba, a

manufacturer of Radio control equipment, and Ogawa Seiki, a

manufacturer of model engines.

This system detects engine speed with a sensor based on throttle

signals transmitted from a transmitter. It then determines the fuel

injection volume based on the required amount of fuel to be supplied for

that engine speed as calculated by an electronic control unit referred to

as the "EC-1", after which fuel is injected into the engine from an

injector. In addition, adjustments can also be made using dials on the

transmitter. The result is an F3A competition engine that features

excellent engine speed linearity relative to throttle operation under all

types of flight conditions.

INTRODUCTION

FEATURES

Supplies the Proper Amount of Fuel at all Times

•Easier starting

•Greater stability during idling

•Excellent linearity and response relative to stick operation.

Simple Adjustment Using Dials on the Transmitter

•Air-fuel mixture at medium and high speeds can be safety and easily adjusted

from the transmitter.

•Adjustments can be made while on the ground and during flight.

Stable Supply of Fuel at all Times

Pressurized fuel is controlled at a constant pressure with respect to all types of

movement during flight allowing stable engine performance at all times.

Light Weight and Easy Installation

The sensor and injector mounted on the engine are both compact and

lightweight, while the electronic control unit (EC-1) is also lightweight, enabling

various connections to be made easily the same as plugging in a servo.

Monitoring of Flight Status

Maximum engine speed and maximum temperature during flight can be

viewed on the liquid crystal display of the electronic control unit (EC-1)

following completion of the flight, making it possible to use that data for future

reference.

The injector consists of a solenoid valve with built-in regulator. It controls pressurized fuel at a

constant pressure and accurately injects fuel based on signals from the electronic control unit (EC-

Injector Air Valve 70C

Injector

Drive Hub

Crankshaft

Fuel Filter

Check Valve

Y harness

BASIC ENGINE PARTS

Accessories

•Fuel Filter

•Check Valve

•Y harness

Electronic Control Unit<EC-1>

Glow plug TYPE F

Cylinder Head

Crankshaft

Temperature Sensor

Pressure Fitting

Cover Plate

RPM Sensor

•The photograph may differ from the actual product.

Injector Never attempt to disassemble the injector.

It may not be able to be reassembled.

Temperature Sensor This measures the temperature of the engine exhaust unit.

RPM Sensor

The RPM sensor is provided with a power generating sensor. When the crankshaft passes in front

of the sensor, the signal that is generated is transmitted to the electronic control unit (EC-1).

Engine speed is then calculated based on that signal which is then used to determine the timing at

which fuel is injected.

Electronic Control Unit<EC-1> (abbreviated as simply EC-1)

The EC-1 transmits fuel injection signals to the injector to ensure the proper amount of fuel

injection based on basic fuel injection data that has been previously entered and constantly

changes wuth position of throttle stick. In addition, engine speed and engine temperature during

operation are displayed on the liquid crystal display.

Y harness

Fuel Filter

Check Valve

Thiscordisusedtoconnectthereceiver(throttlechannel),throttleservoandEC-

This fine mesh filter prevents foreign matter from plugging the small injector

valve.

This one-way valve's function is to pressurize the fuel tank by crankcase

pressure and prevent fuel from returning to the engine crankcase.

•Driver to push EC-1 keys

•Duble-sided sponge-backed

cushioning tape

INSTALLATION OF THE AIR VALVE

As delivered, the engine has its air valve lightly fitted into its intake boss. Secure it as follows.

Loosen the retainer nut, rotate the air valve to its correct position and make sure that it is pressed

well down into the intake boss, compressing the rubber gasket, before retightening nut.

Rotate the retainer nut gently until it stops, then tighten a further 90-120˚.

Do not overtighten the screw as this will damage the thermo insulator.

✽

EC-1

CH3

AUX✽

✽

CONNECTING WITH THE EC-1

(1) Injection Time Input Terminal (CH3 THRO)

Connect the y harness provided with the CH3 THRO input terminal to throttle channel (3) of the

receiver (throttle: CH3), connect the wiring connector from the throttle servo to one of the double-

opening connectors on the opposite side, and connect the other double-opening connector to

CH3:THRO of EC-1.

(Use the separately sold extension cord if the wiring cords are too short.)

Connect the receiver and servo-related components (rudder section) in the same manner as in the

past.

(5) Rotation sensor input terminal (r.p.m.)

(4)

Temperature sensor input terminal (Temp)

(3) Injector output terminal (INJECTOR)

(2) Injection trim input terminal

(AUX TRIM)

(1) Injection time input terminal

(CH3:THRO)

Two extension cords (sold separately) of

a length corresponding to the airframe

are required for connecting (1) and (2).

[4] Data (-) decrease key (DATA-)

[3] Data (+) increase key (DATA+)

[2] Function key (backward FANC )

[1] Function key (forward FANC )

LCD contrast:

Turning to the right = darker,

turning to the left = lighter

(2) Injection Trim Input Terminal (AUX TRIM)

Connect a spare channel for dial use of the receiver (e.g. channel 7) to the AUX:TRIM terminal.

(Use the separately sold extension cord if the wiring cords are too short.)

(3) Injector Output Terminal

Connect the injector connector to the injector output terminal. Protect the lead wire with a heat-

resistant tube,etc. if it makes contact with the engine mount.

(4) Temperature Sensor Input Terminal

Connect the temperature sensor connector to the temperature sensor input terminal.

(5) Rotation Sensor Input Terminal

Connect the rotation sensor connector to the rpm input terminal.

Note:

Soft mounts may become soft due to excessively high temperatures leading to increased

vibration amplitude of the engine. Make connections so that the lead wire does not make

contact with the engine mount, manifold or airframe under any conditions.

Injector Rotation Sensor

Temperature Sensor

Branched Cord

Throttle Servo

Receiver

Spare Channel Transmitter

When the power supplies of the transmitter and receiver are turned on and function key is

pressed with a pressing rod (non-metallic rod), the LCD display changes in the manner shown

below. (The display changes in the opposite order when function key is pressed.)

0 r.p.m. The current engine speed is displayed.

AOOVIf the engine is not running after more than 1 second have elapsed, the

display changes to a display of the battery voltage.

0 Max The maximum engine speed stored in memory after the power is turned

on is displayed (and reset when the power is turned off).

TMax+OOO:The maximum engine temperature stored in memory after the power is

turned on is displayed (and reset when the power is turned off). *OVER*

is displayed if the temperature sensor is not connected.

Tmp ±OO:The current engine temperature is displayed. *OVER* is displayed if the

temperature sensor is not connected.

TmC +0% The amount of injection trim (TmD <amount of trim> during ATL) when

the throttle stick is fully open while using the slowest position as the origin

is displayed.

TmD ATL

Adjustments in injection volume can be made with the injection trim

adjustment dial (spare channel dial) on the transmitter.

This sets the trim mode of fuel injection. (There are two methods of

adjusting the air-fuel mixture to be richer or leaner, namely (1) TmD ATL

and (2) TmD Fine). Pressing the (+) or (-) data keys switches the display

between TmD ATL and TmD Fine.

TmD Fine TmL +0%

TmM +0%

TmH +0%

Case of selecting TmD Fine:

The display changes according to the throttle

stick position on the transmitter.

The injection trim volume is displayed at each

position.

The injection volume can be adjusted for TmM

and TmH with the injection trim adjustment dial

(spare channel dial) on the transmitter.

The initial settings are all set to 0%.

EC-1 DISPLAYS AND EXPLANATIONS

Power ON

1 second later

Trim Amount Monitor

Trim Mode

Trim Monitor

Full Slow

Intermediate Slow

Full Open

Lo Mi Hi

TML

TMH

123456789

TmD ATL This adjustment mechanism allows

adjustment of a single trim point using the

slow position as the origin. Adjustment

uses the injection trim adjustment dial

(spare channel dial) on the transmitter.

There is no change at Lo (slow position)

while the trim volume reaches a maximum

at Hi.

TmC

TmD Fine

TMM

Injection trim can be adjusted independently

for three points (TmL, TmM and TmH) as

shown in the graph. Mi (intermediate slow

TmM) and Hi (full high TmH) are adjusted

with the injection trim adjustment dial (spare

channel dial) on the transmitter. Lo (full slow

TmL) is adjusted on the TRL menu displayed

following the function menu.

Lo Mi Hi

123456789

TRL +0%

This refers to the idle injection volume

adjustment trim, and the initial value ±0%

is displayed. Pressing the data (+) key

increases the injection volume, while

pressing the data (-) key decreases

injection volume. The flow slow injection

adjustment volume is displayed as ±the

adjustment volume.

Bat

OOVThis displays the battery voltage. "Low Battery" is displayed when the

battery voltage decreases to 3.8 V.

Lmt Low This is used to set the control range of fuel injection time.

Explanation of TmD ATL and TmD Fine

Fuel injection volume

(Throttle stick position)

Fuel injection volume

(Throttle stick position)

Actual variation

range: ±30%

Fuel injection

volume

(Throttle stick position)

Indice

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