Evolution EVOE10GX Mode D'emploi page 4

EN
Introduction
Congratulations on your forethought and decision to purchase the Evolution
block gas engine in our new series. All of the Evolution brand gas engines are designed from the
start to provide you with excellent performance at a fraction of your previous operating costs. We
have painstakingly designed and tested each engine to insure a hassle free experience without
giving away anything in expected performance or durability. This manual, when read and fol-
lowed will guide you through the simple steps to your success. Welcome to the Evolution family.
Small Block Gas Engine Design
Starting with our already proven 60NX glow engine, enjoyed by thousands around the world, we
endeavored to take that excitement and experience into the realm of gasoline fuel to provide
you with a complete package; great performance and low cost of operation.
Step 1 Start with a great engine. The 60NX was first announced and sold in July 2009 and has
since provided thousands of users excellent performance.
Step 2 Design a new carburetor system that will be reliable and provide for hassle free use by the
owners. This new carburetor, with already proven technology, was modified to fit in the
available space in front of the cylinder and the unique needs of a gasoline fueled engine.
Built on to the front of the carburetor, is a crankcase-pressure driven regultar system.
This system takes fuel a muffler pressurized tank and meters it properly in all attitudes of
flight. A new cat's eye style fuel metering system was added to allow for more contral-
lability to the low and mid-range throttle positions.
Step 3 Design the proper muffler system to handle the extra heat and expansion of the burnt gas
mixture when compared to a glow system. These changes included adding volume to the
muffler, including a much larger muffler through-bolt to handle the heat and stress, and
enlarging the outlet of the muffler to minimize backpressure while still providing noise
reduction.
Step 4 Design operating accessories that enhance the user experience. During our extensive
2-1/2 year testing program we discovered a lot of new techniques and obstacles that are
unique to gasoline fueled small block engines.
• Because the amount of fuel consumed is one third that of a comparable sized
glow engine the construction and reliability of the fuel delivery system to the
carburetor becomes three times as critical. Microscopic pieces of dirt that used
to safely pass through the larger fuel passages of a glow carburetor will wreak
havoc on a gasoline system. By using a quality inline filter like our Inline Filter
(EVOA105) we can take care of the dirt problem. One of these is included with
your engine.
• The same holds true for air bubbles from the tank or any small leak in the fuel
tubing; what would pass harmlessly through a glow carburetor simply is not tol-
erated in a gasoline system because the air bubbles are effectively three times
the size they used to be. We have developed and sourced an excellent felt filter
clunk that when used in the tank stops all the air bubbles from moving into the
fuel delivery tubes. This felt clunk is critical to successful and reliable operation.
One of these is included with your engine.
• We found that high muffler temperatures would destroy normal Tygon
(the go-to choice for gasoline engines) within minutes. We found that Neoprene
tubing would withstand the temperatures but it tended to degrade quickly
in use so we sourced the proper sized Viton
EVOA104) which withstands not only the high temperatures but its durability
is much greater than that of either Tygon or Neoprene. The added bonus is that
it fits and holds well to the fuel fittings without any need for additional wire or
tie-wrap keepers. We have included a supply of this tubing with your engine.
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brand's first small
®
tubing (Gasoline Fuel Tubing
®
tubing
®