jetcareers - View Single Post - Arrow climb power - 25-squared?

nanjason · August 22nd, 2003, 15:32

What's with the 25-squared recommendation for climb in an Arrow? (Lycoming IO-360C1C6). I don't see anything like that in the POH but my instructor insists on using it for climb. But this brings the climb rate so far back it's pathetic. Aside from being quieter with lower RPM, what is the reason for this? I have read John Deacon's columns on Avweb and he has collected data that even flies in the face of the old "keep-MAP-lower-than-RPM" rule of thumb. Thanks!

August 22nd, 2003, 15:32	#1
nanjason Newbie Join Date: Jun 2002 Posts: 4	Arrow climb power - 25-squared? What's with the 25-squared recommendation for climb in an Arrow? (Lycoming IO-360C1C6). I don't see anything like that in the POH but my instructor insists on using it for climb. But this brings the climb rate so far back it's pathetic. Aside from being quieter with lower RPM, what is the reason for this? I have read John Deacon's columns on Avweb and he has collected data that even flies in the face of the old "keep-MAP-lower-than-RPM" rule of thumb. Thanks!