engine for emotion
ROS motor
LIGHT FLY ENGINES
32
Index
Index 2
Introduction 3
General advice 4
Component description 5
Head 5
Cylinder 5
Piston 5
Crankcase 5
Crankshaft 5
Clutch 6
Flywheel 6
Ignition coil 6
Reduction gear 6
Instructions 7
Running-in 7-8
Starting 9-10
Technical advice 11
Clutch 11
Reduction gear 12
Ignition timing 13-14
Spark plug 15
Maintenance 16
Technical features 17
Ros 100 Light 17
Ros 125 Light 18
Contact 19
Introduction
Thank you for purchasing a ROS engine, developed and manufactured by Marcmotor.
The ROS 100 Light and ROS 125 Light are two-stroke internal combustion engines.
The torque and, thus, the power output of the engine are essentially determined by the
combustion process. Combustion, in turn, can be inuenced to a very large extent by the
ows and turbulences that can be produced in the combustion chamber by the geometry
of the transfer duct and the combustion chamber. The ows induced primarily by the in-
duction process and to a lesser extent by combustion-chamber geometry in conjunction
with the compression squish fold the ame front and thus accelerate the process of energy
conversion. Tumble, swirl and squish increase with engine speed and consequently, folding
of the ame front also becomes more pronounced. Those are the reasons that have urged
the ROSmotor and Marcmotor to deeply study the shape of the combustion camber, the
piston, the cylinder, the transfer duct, the transfer port, the crankcase and the crankshaft,
in order to obtain a very powerful engine with low consumption rate. Components already
available in other elds, like motorcycles and scooters, did not satisfy our target, that is
your target as well. We could have been content with spare parts already on the market,
but to be content is not enough for us. ROSmotor and Marcmotor have developed their
own parts. All these components are exclusively created for their engines: ROS 100 Light
and ROS 125 Light. They are all made in Italy and all the engines are manually assembled
by experts. Marcmotor is not a factory but, proudly, an Italian craftsman! Our saying is:
“Only innovation, not imitation”
engine for emotion
ROS motor
LIGHT FLY ENGINES
To Next Page
Loading...
Need help?
General
