CorvAircraft> Avweb article about operating Rich of Peak EGT

[Dave Morris "BigD"]

I've had the pleasure of talking quite a bit recently with Walter 
Atkinson, who is an associate of John Deakin, about proper leaning 
procedures.  These guys have amassed an extraordinary amount of 
actual scientific analysis on running engines by actually studying 
them on test stands, as opposed to guessing.  They have dispelled a 
lot of myths for me.

Walter hangs out on several email lists, such as the Beech and Mooney 
ones, and is willing to discuss engine issues with anybody.  This 
particular article is full of good stuff, but one thing as Corvair 
drivers you need to realize is that trying to run lean of peak is 
difficult with a carbureted engine.  Most of the LOP operation is 
going to require injection, and balanced injectors at that.  On the 
other hand, since you are building the engine yourself, you may be 
able to achieve a more balanced fuel-air ratio than Lycoming does 
when it cranks out another engine on the assembly line.

There are a handful of people in aviation these days who take a 
scientific approach to their craft.  They don't just regurgitate what 
Lycoming and Cessna have been proclaiming for 50 years, but take a 
methodical and objective approach to advancing the state of knowledge 
in their area.  I consider John Deakin and Walter Atkinson to be in 
the same class as Bob Nuckolls and William Wynne in that 
regard.  Listen to what they have to say, look at their actual data, 
and consider the possibility that "if 5 million people say a stupid 
thing, it is still a stupid thing" when it comes to old wives' tales 
and old mechanic's tales.

Dave Morris

At 09:19 AM 2/19/2007, you wrote:
>This may be of interest to some of you
>http://www.avweb.com/news/pelican/194452-1.html
>
>
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