Leaning & EGT?
Thread Starter
Joined: Mar 2005
Posts: 553
Likes: 0
From: UK
Leaning & EGT?
I'm flying a PA28 181 Archer III at the moment.
Recently I've started thinking more about leaning and decided to consult the POH. It advises that Leaning (above 75% power) should only be carried out above 5000ft. For less than 75% power, leaning can be carried out at any altitude.
Having looked at a few of the performance charts, it's clear that even at 2000ft, achieving more than 75% power would require an RPM in excess of 2400rpm (Unless OAT is less than -5C). Therefore, I see no real reason for not leaning, even if it's just to improve fuel economy.
Next question:
The POH talks about using the EGT gauge as a more accurate way of leaning and refers to the Textron Lycoming Operating Manual.
I can't find one of these anywhere and they're only available online if you purchase one. Does anyone know of any useful information regarding leaning a carburettor engine with reference to EGT.
Thanks!
Recently I've started thinking more about leaning and decided to consult the POH. It advises that Leaning (above 75% power) should only be carried out above 5000ft. For less than 75% power, leaning can be carried out at any altitude.
Having looked at a few of the performance charts, it's clear that even at 2000ft, achieving more than 75% power would require an RPM in excess of 2400rpm (Unless OAT is less than -5C). Therefore, I see no real reason for not leaning, even if it's just to improve fuel economy.
Next question:
The POH talks about using the EGT gauge as a more accurate way of leaning and refers to the Textron Lycoming Operating Manual.
I can't find one of these anywhere and they're only available online if you purchase one. Does anyone know of any useful information regarding leaning a carburettor engine with reference to EGT.
Thanks!
Joined: Aug 2000
Posts: 3,648
Likes: 2
From: UK
Start with http://www.lycoming.com/support/publications/index.jsp
This Flyer reprint and SI-1094-D actually contain more info on leaning than the engine manual.
This Flyer reprint and SI-1094-D actually contain more info on leaning than the engine manual.
