LEANING
CRUISE CONTROL BY PERFORMANCE
CURVE
NOTE
Refer to chapter 13 of the Teledyne Continen-
tal Motors Operators and Maintenance manual for
more detailed information.
1. Set manifold pressure and RPM at cruise
power selected.
2. Correct horsepower for inlet air temperature
as follows:
(TS = Standard Altitude Temperature)
(1) Add 1% for each 6
o
F below TS
(2) Subtract 1% for each 6
o
F above TS
3. Adjust mixture to lean out fuel flow for
cruise settings according to applicable fuel flow vs.
brake horsepower curve.
CAUTION
When increasing power, enrich mixture, ad-
vance RPM and adjust throttle in that order. When
reducing power, retard throttle, then adjust RPM
and mixture
NOTE
It may be necessary to make minor readjust-
ments to fuel flow (mixture) after changing RPM
.
CRUISE CONTROL BY T.I.T.
If turbine inlet temperature indicator is used as
an aid to leaning proceed as follows:
1. Adjust RPM for desired cruise setting.
2. Slowly move mixture control toward “lean”
while observing T.I.T. gage. Note position on
the instrument where the needle “peaks” or
starts to drop as mixture is leaned further.
3. Maximum recommended cruise setting is to
be determined (TBD).
CAUTION
Do not attempt to adjust mixture by use of
T.I.T. at settings above 75% of maximum power
without consulting manufacturers Pilots Operating
Handbook. Also, remember that engine power will
change with ambient conditions. Changes in altitude
or outside air temperature will require adjustments
in Manifold pressure and fuel flow. (Refer to Charts
Fuel Flow vs BHP.)
Gage fuel flow should fall between the maxi-
mum and minimum values on the curve. If not, the fuel
injection system or instrumentation (including tachom-
eter, manifold pressure, fuel flow gage or T.I.T. system)
should be checked for maladjustment or calibration
error.
