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skip and anyone flying.
What do you see for fuel flows? IO 550N?
[ an IO550N burns the same in a Ovation, B35, Legacy, ES, sr22
or columbia... 15gph LOP or 18gph ROP down low, and will
burn less and less as the HP goes away the higher one flys -Rob ]
Ron;
I have an IO550N Platinum in my ES. My most routine flight is from
Prineville, OR (18 miles from Redmond) to Davis, CA. which takes 2 hrs and
10 min. takeoff to touchdown, no wind conditions. I'm generally at 11500'
to 13500' with fuel flow of 11.8 - 12.2 gph which is 60 deg to 90 deg lean
of peak EGT. At this lean engine operation I still get TAS of 170 -173 Kts.
Normally its just my wife and I with a little luggage, but with the fuel
load, we are within 200-250 lb. of gross. In terms of passenger miles per
gallon, with 4 people aboard this is an extremely efficient airplane. Much
better than my old Skylane.
I ran George Braley's fuel flow test and found less than 0.8 gph flow
difference between highest and lowest cylinders. Not bad for a stock
engine. I almost always run lean of peak.
Leon Smith
LNCE N63LS
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