"Newps" wrote: Will wrote:
On Feb 12, 2:53 pm, "Dan Luke" wrote:
What pwr & mixture setting? EGTs?
23" & 2300 rpm, IIRC. The mixture was 25 deg. ROP. Didn't check the
EGTs.
I wish I'd looked at the CHTs.

Dan, that EGT value looks quite close to the "red box" value that John
Deakin teaches in his engine management course. Here's a link to his
latest article, which covers (or reviews, actually) the EGT/CHT
relationship. Good stuff here..




I believe he said the 23 squared was 65%. If so he is in the red box. You
want to be richer then 100 ROP or leaner than peak EGT.

According to the boss of the flight school who was giving me the test flight,
that is the setting achieved by using the Garmin G1000's "lean assist"
feature. Also according to him, that's Cessna's SOP for the airplane.


--
Dan
C-172RG at BFM