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Posted for "George Braly" <gwbraly@gami.com>:
Art,
USE a LOOONNNNG runway. Cool time of day.
If it were mine, I would ask Jack McAlester what kinds of TIT's and
fuel flows that he has at full power.... For some current numbers.
Absent that, and keeping in mind that I have not looked at the numbers
for that engine in about two years, but from memory (always dangerous
to rely upon):
When you power up, make sure the TIT is under 1400, and preferably
under 1350. I like TITs around 1240 to 1300 on 8.5:1 compression
engines with 22d timing at full power/full rich. But there is some
variability with probe placement from one installation to another.
Unless the fuel flow is adequate, abort and adjust the fuel flow
UPWARDS. If it is too rich, you CAN use the red knob to correct that
problem.
Fuel flow at WOT x 2700 should be in the 43 to 46 gph range, depending a
bit on the engine and ambient conditions.
Have somebody watch and communicate on the radio and make sure you are
not TOO rich with too much black smoke before you get to takeoff speed.
CLIMB at 160-170KIAS full rich. You can use WOT - - (where did Monty
set it??? Around 36 to 37 " Hg, would assume) and 2700 RPM for the
shallow climb.
Level off at 2000 to 3000 feet AGL and fly around at high speed and
essentially full rich. Either use full power, or try 33" x 2500 and
a TIT under 1400d F, or even full rich. TITs ought to be under 1400 or
so. Again, preferably under 1350.
1st flight: 10 minutes -- stay near/overhead the airport and LAND
and then decowl the engine and hunt for leaks and chaffing carefully.
2nd flight: 30 to 40 minutes. You can climb at 300 to 400 fpm and
high KIAS to cooler/smoother altitudes, but stay as low as practical.
Land, decowl and look again.
3rd flight: Go somewhere, but go at lower altitudes (under 14,000
feet) and come back. Consider decowling and looking again. 2
hours? Want to run LOP ? OK. 30 to 33" x 2500 and 16 to 17 gph.
4th flight - - out to 5 to 7 hours. Same as 3rd flight.
If at any time you see any CHT get above 410d F - - - then DO SOMETHING
right then to get them under control. I like < 380 for routine
normal day in day out CHTs.
At 5 to 7 hours, drain the oil and change the filter. Don't bother
with an oil sample. Cut the filter and hunt for metal. Should have
some small amounts, but no part numbers.
Replace the oil and filter and then fly like it was broken in. It
almost certainly will be.
Change the oil again and oil sample at about 25 hours.
Regards, George
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