O.S. Engines 18TM Revo User Manual
18TM w/11K-R & T-Maxx Revo Manifold
MAX-
OWNER'S INSTRUCTION MANUAL
It is of vital importance, before attempting to
operate your engine, to read the general
•SAFETY INSTRUCTIONS AND WARNINGS'
section on pages 2-5 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 vehicle, radio control equipment, etc.,
are accessible for checking at the same time.
CONTENTS
SAFETY INSTRUCTIONS AND
WARNINGS ABOUT YOUR O.S. ENGINE...... 2-5
ENGINE CONSTRUCTION........................... 6
NOTES WHEN APPLYING AN ELECTRIC
STARTER
ABOUT THE
................................. 7
ENGINE ......................................
8
FINAL ADJUSTMENT .................... 20-22
CARBURETOR CLEANLINESS ............. 22
CARE AND MAINTENANCE ........................... 23-24
CHECKING THE ENGINE ................. 25
TROUBLE
SHOOTING ......................... 26-29
BEFORE
STARTING .......................................
BASIC
ENGINE
PARTS ....................................
CARBURETOR
FACTS ABOUT GLOWPLUG ........................12
INSTALLATION OF THE CARBURETOR ....... 13
INSTALLATION ..............................................13-16
STARTING THE ENGINE & RUNNING-IN .....17-19
CONTROLS ........................... 11
8-10
10
ENGINE EXPLODED VIEW & PARTS
CARBURETOR EXPLODED VIEW &
PARTS LIST............................. 32-33
O.S. GENUINE PARTS & ACCESSORIES ........... 34
THREE VIEW DRAWING ............................ 35
GUARANTEED TO KEEP YOUR
R/C CAR RUNNING WELL .............. 36-39
LIMITED
WARRANTY............................. 41
LIST.... 30-31
1
SAFETY INSTRUCTIONS AND WARNINGS ABOUTYOUR O.S. ENGINE
Remember that your engine is not a "toy", but a highly efficient internalcombustion machine whose power is capable of harming you, or others, if it is
misused.
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.
The advice which follows applies basically to ALL MODEL ENGINES and is
grouped under two headings according to the degree of damage or danger
which might arise through misuse or neglect.
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.
2
WARNINGS
• 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 an 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.
3
NOTES
This engine is intended for model cars.
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.
Install an effective Silencer (muffter).
Frequent close exposure to a noisy
exhaust (especially in the case of the
more powerful highspeed engines)
may eventually impair your hearing
and such noise is also likely to cause
annoyance to others over a wide area.
The wearing of safety glasses is also
strongly recommended.
Before starting the engine, always
check the tightness of all the screws
and nuts especially those of joint and
movable parts such as throttle arm.
Missing retightening the loose screws
and nuts often causes the parts
breakage that is capable of harming
you.
4
NOTES
Take care that the glowplug clip or
battery leads do not come into contact
with rotating parts. Also check that the
linkage to the throttle arm is secure.
For their safety, keep all onlookers
(especially small children) well back
(at least 20 feet or 6 meters) when
preparing your model for running.
To stop the engine, fully retard the
throttle stick and trim lever on the
trans-mitter, or, in an emergency, cut
off the fuel supply by pinching the fuel
delivery line from the tank.
Warning! Immediately after a glowplugignition engine has been run and is still
warm, conditions sometimes exist
whereby it is just possible for the engine
to abruptly restart if it is rotated over
compression WITHOUT the glowplug
battery being reconnected.
5
ENGINE CONSTRUCTION
With this engine, the piston will
feel tight at the top of its stroke
(TDC) when the engine is cold.
This is normal. The cylinder bore
has a slight taper. The piston
and cylinder are designed to
achieve a perfect running
clearance when they reach
operating temperature.
Near TDC
Piston
Cylinder Liner
Crankshaft
Slight taper
When the engine is cold. When the engine-is hot.
6
NOTES WHEN APPLYING
AN ELECTRIC STARTER
Do not over-prime. This could
cause a hydraulic lock and damage
the engine on application of the
electric starter.
If over-primed, remove glowplug,
close needle-valve and apply
starter to pump out surplus fuel.
Cover the head with a rag to
prevent pumped out fuel coming
into your eyes.
7
ABOUT THE ENGINE
This engine is designed especially to power the TMaxx Revo. Purposelly designed LC3 glow plug is
supplied with the engine for improved power, fuel
economy and durability. The new 11K-R
carburetor offers easy handling as well as high
performance.
"T-Maxx Revo" is a trademark of Traxxas Corp.
Standard accessories
Glow Plug LC3
Exhaust Seal Ring 1 piece
Exhaust Manifold for T-Maxx Revo
BEFORE STARTING
Tools, accessories, etc.The following items are
necessary for operating the engine.
Items necessary for starting
FUEL
Generally, it is suggested that the user selects a fuel
that is commercially available for model two-stroke
engines and contains 10-30% nitromethane. As a
starting point, we recommend a fuel containing 20%
nitromethane, changing to a fuel containing more
nitro if necessary. When the brand of fuel is
changed, or the nitro content increased, it is
advisable to repeat the running-in procedure
referred to in the RUNNING-IN paragraphs. Please
note that with high-nitro fuels,
although power may be increased
for competition purposes,
glowplug elements do not last as
long and engine life will be
shortened.
8
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.
FUEL FILTER
To installed in the fuel line between
fuel tank and carburetor to prevent
dust coming into the carburetor.
GLOWPLUG IGNITER
Commercialy available handy
glowplug heater in which the
glowplug battery and battery
leads are integrated.
FUEL PUMP
For filling the fuel tank, a simple,
polyethylene "squeeze" bottle,
with a suitable spout, is required.
SILICONE FUEL LINE
Heatproof silicone tubing of
approx. 5mm o.d. and 2mm i.d.
is required for the connection
between the fuel tank and
engine.
9
TOOLS
HEX WRENCH
Necessary for engine installation.
1.5mm, 2mm, 2.5mm, 3mm
BASIC ENGINE PARTS
HeatsinkHead
SCREWDRIVER
Necessary for carburetor adjustments.
No-1, No.2,etc
LONG SOCKET WRENCH WITH PLUG GRIP
Recommended for easy removal and
replacement of the angled and recessed
glowplug, the O.S.Long Socket Wrench
incorporates a special grip.
Carburetor
Type 11 K-R
Exhaust
Rear Adaptor
Mounting Lugs
Crankcase
Crankshaft
10
CARBURETOR CONTROLS
Needle Valve
Mixture Control Valve
Throttle Stop
Screw
Thermo Insulator
Metering Needle
Four adjustable controls are provided on
this carburetor.
The Needle-Valve;
For adjusting the mixture strength
throttle is fully open.
The Mixture Control Valve:
For changing the mixture strength at mid
speed and acceleration. (Do not rotate the
screw more than one turn.)
The Metering Needle:
For adjusting the mixture strength at partthrottle and idling speeds, to obtain steady
idling and smooth acceleration to mid
speeds.
The Throttle Stop Screw:
For setting the minimum idle speed:
NOTE: Readjustment may be necessary,
occasionally to allow for changes in fuel
formula gear ratio or clutch engagement
point.
11
when the
FACTS ABOUT GLOWPLUGS
Since the compatibility of glowplug and fuel may have
a marked effect on performance and reliability, it may
be worthwhile to choose the R/C type plug found
most suitable after tests. Recommended O.S. plugs
are LC3. Carefully install plug finger-tight, before final
tightening with the correct size plug wrench.
The role of the glowplug
With a glowplug engine, ignition is initiated by the
application of a 1.5-volt power source. When the
battery is disconnected, the heat retained within the
combustion chamber remains sufficient to keep the
plug filament glowing, thereby continuing to keep the
engine running. Ignition timing is 'automatic': under
reduced load, allowing higher rpm, the plug becomes
hotter and, appropriately, fires the fuel/air charge
earlier; conversely, at reduced rpm, the plug become
cooler and ignition is retarded.
Glowplug life
Particularly in the case of very high performance
engines, glowplugs must be regarded as expendable
items.
However, plug life can be extended and engine
performance maintained by careful use, i.e.:
Install a plug suitable for the engine.
Use fuel containing a moderate percentage of
nitromethane.
Do not run the engine too lean and do not leave the
battery connected while adjusting the needle.
When to replace the glowplug
Apart from when actually burned out, a plug may
need to be replaced because it no longer delivers its
best performance, such as when:
Filament surface has roughened and turned white.
Filament coil has become distorted.
Foreign matter has
body has corroded.
Engine tends to cut out when idling.
Starting qualities deteriorate.
12
adhered to filament or plug
INSTALLATION
First, remove the engine, installed as standard,
with the engine mount.
Install the flywheel and clutch.
13
Loading...