"Orval Fairbairn" wrote in message
news
2. I often fly into/out of Big Bear City, Ca. (elev. 6500ft.) I've
been
able
to get out lightly loaded (me and one in the right seat) at a density
altitude
of 8,100 with one of our clubs 172s with the 320H2AD engines at 160 hp.
What
difference would I see with the 15 fewer horses up front?


How do you get 15 fewer horses? You may actually get a few more with
mogas.

His has 15 fewer than the clubs 172 with the O320. The O300 bird won't
perform as well unless it is lighter.