The POH power setting tables are crap IMHO. I suspect they are an artifact of certification standards rather than an indication that Mooney doesn’t understand power settings. The ROP settings are way leaner than what you’ll get, and LOP settings adjusted for OAT are stupid. The Best Economy settings cannot be duplicated in my plane (published FF is near or at peak TIT.). No matter…
Mid teens…
if I fly 30.5x2500, 100ROP is something like 22.5 GPH. I don’t fly cruise settings ROP.
LOP, power is a function of fuel flow. Period. 13.7* FF is approximately the power produced.
This table is a dog’s breakfast of various power settings. 18.7 != 17.6 != 16.4 in terms of power. And if you’re flying LOP and fixated on a MP/RPM combination, you’re doing it wrong.
I fly 30.5 ish x 2400 @ 16.5 GPH. 16.5*13.7= 226HP, or 73%. Same FF at different RPM/MP combinations are very similar in IAS. I vary MP to achieve desired FF at desired TIT-EGT’s.
so… 16-17,000, where I cruise most of the time, that is 203-205 KTAS on the G1000, which is 2ish knots below true-true.
My plane has TKS, which probably costs 5-10 knots in cruise.
It really is an amazing machine.
-dan