SECTION7
DESCRIPTION & OPERATION
PIPER
AIRCRAFI'
CORPORATION
PA-28-161, WARRIOR
ll
A vertical stabilizer, an all-movable horizontal stabilator, and a rudder
make
up
the empennage. The stabilator incorporates
an
anti-servo tab which
improves longitudinal stability
and
provides
longitudinal trim. This tab
moves in the same direction as the stabilator, but with increased travel.
7.5
ENGINE
AND
PROPELLER
The PA-28-161 is powered by a four cylinder, direct drive, horizontally
opposed engine rated at
160 HP at 2700 RPM. It is equipped with a starter, a
60
amp
14
volt alternator, a shielded ignition, two magnetos, vacuum pump
drive, a fuel pump, and a wetted polyurethane foam induction air filter.
The engine compartment is accessible for inspection through top-hinged
side panels on either side
of
the engine cowlings. The engine cowlings are
cantilever
structures
attached
at
the
fire
wall.
The
engine
mounts
are
constructed
of
steel tubing, and dynafocal mounts are provided to reduce
vibration.
The exhaust system is constructed
of
stainless steel and incorporates
dual mufflers
with heater shrouds to supply heated air for the cabin, the
defroster system and the carburetor deicing system.
An oil cooler is located on the left rear
of
the engine mounted to the
engine baffling. Engine cooling air, which is picked up in the nose section
of
the engine cowling and carried through the baffling, is utilized on the left side
for the oil cooler. A winterization plate is provided to restrict air during
winter operation (refer to
Section 8).
Engine air enters on either side of the propeller through openings in a
nose cowling and
is
carried through the engine baffling around the engine
and oil cooler. Air for the muffler shroud is also picked up from the nose
cowling and carried through a duct to the shroud. Carburetor induction air
enters a chin scoop
on
the lower right cowling and is passed through a wetted
polyurethane filter
tO'
the carburetor air box. Heated air enters the carbure-
tor
air box through a hose connected to the heater shroud.
A fixed pitch propeller is installed as standard equipment The propeller
I has a 74-inch diameter with a 58 or 60-inch pitch. The pitch is determined at
75%
of
the diameter. The propeller is made
of
an aluminum alloy construction.
The pilot should read and follow the procedures recommended in the
Lycoming
Operator's Manual for this engine in order to obtain maximum
engine efficiency and time between engine overhauls.
REPORT: VB-1180
7-2
ISSUED: AUGUST 13, 1982
REVISED:
SEPTEMBER
12; 1990
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