leaning below 5000

Thomas Borchert wrote:

Jose,

Any opinions on Usenet about this?


Uhm, in what cave have you been hiding? ;-)

You are right. Except for running at 50 ROP, which is a bad spot. Read
Deakin's columns on engine management at www.avweb.com. And learn to
use Google to search Usenet.

When I did a biennial at Bishop, CA, the pre take-off procedure in the
club 152 was to lean the mixture for max revs at max throttle. The
difference to full rich was so marked that I am confident we would
never have got airborne, even off their long runway, at full rich.

My experience with a syndicate Robin 140 here in UK was that a climb
at full power started to go lumpy like a car on full choke above 4000
feet.