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Engine Mounting - Saito FG-57T Instruction Manual

Twin-cylinder gasoline four-stroke engine.
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CAUTION: Never use your bare
fingers to start any model engine. This
could lead to injury.
There are a variety of electric starters
on the market. The Hangar 9
PowerPro
H-D 12V starter (HAN162)
will work perfectly on all of the twin-
cylinder gasoline Saito engines.

Engine Mounting

When mounting the engine please
note that the carburetor of the engine
extends beyond the mounting pads
of the engine mount and this requires
the use of at least 1.0-inch (25mm)
standoffs between the firewall and the
engine mounting pads. Conversely,
you could provide a relief hole in
the firewall for the carburetor to
stick through into the interior of the
fuselage/nacelle.
The engine mounting holes are sized
for M4 screws. If you choose a
different screw, carefully enlarge the
holes in the engine mount to provide
the proper clearance.
Make sure that adequate cooling air
is circulating around the engine! The
cooling air should pass around and
through the cylinder fins and over the
exhaust pipes as insufficient cooling
will cause the engine to run poorly and
cause mechanical failures. Without
cooling air over the exhaust pipes, it is
very likely they will become loose at
the cylinder head. Always ensure that
there is at least a 3:1 (5:1 preferred)
ratio of cool air exhaust outlet area to
inlet area. If you need to add baffles
within your cowl to direct the air over
and through the cylinders, you should
do this before you have an overheating
problem that could possibly damage
your engine.
When attaching the muffler pipes,
®
screw the pipes into the cylinder heads
as far as possible before tightening
the locking nut to the cylinder head.
This ensures adequate strength in the
threaded joint between the cylinder and
the muffler/exhaust pipe. (The use of
a thread locking compound will help
greatly in this area.)
Breather
Included with your engine is a muffler
clamp that is designed to be mounted
to the airframe and provides the
support necessary for the exhaust
pipes. It is important to either use
the supplied exhaust pipe mounts or
devise another method for yourself to
adequately support the exhaust tubes
and prevent tube breakage in flight.
E N G I N E M O U N T I N G
nipple
5
Muffler
clamp

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