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FOR SIMULATION USE ONLY
Air Induction System
The engine induction air normally enters through a NACA duct on the left side
of the lower engine cowl.
The air is then directed to a filter box where dust and other contaminants are
removed by a replaceable paper filter element.
On the outlet side of the filter box there is a flapper valve which allows the
pilot to select normal cold induction air or hot induction air which is drawn
through the muff fitted to the muffler.
Hot air is not filtered – therefore care must be taken when choosing run up
positions to minimise dust ingestion while carb heat is selected ON.
Exhaust System
Each cylinder feeds directly to the muffler via an extractor pipe.
The extractors fit to the head using a metal-metal gasket-less connection
which also allows a degree of freedom to the extractor position. A muff is
fitted to the muffler to supply hot air for the carburettor heat system.
A separate hot air muff is fitted to the tail pipe to provide air for the cabin
heat. The exhaust tailpipe exits out through the lower left side of the engine
cowl.
Cooling System
Ram air for engine cooling enters through two intakes at the front of the
engine cowl.
The cooling air is directed around the cylinders and other areas of the engine
by appropriate baffles and is then exhausted through an opening in the rear
of the lower cowl.
Air for oil system cooling enters the lower intake chamber and flows through
an oil cooler mounted below the sump. The air then exhausts out the lower
cowl opening with the engine cooling air.
