Maybe you can have him explain how he's doing such a great business in when
maybe 5% of the aircraft are being run LOP?

Maybe you can have him explain how that happens when the EGT is symetrical
on either side of peak EGT, and the CHT is actually cooler...much cooler?

I believe Dawley's exhaust business is benefiting from people running
INCORRECTLY lean of peak. The problem isn't necessarily running lean
of peak, which most people know should produce cooler (not hotter) EGTs
and CHTs.

The trouble comes with everyone TRYING to run LOP (or, just plain
leanER) to save gas, without the proper instrumentation, technique, or
knowledge.

Heat kills exhaust systems. Dawley has noticed a spike in their sales
since gas prices went through the roof, and they believe it is due to
everyone trying to run LOP. I have no reason to doubt them.

People are saving a few bucks on gas, but are spending a few hundred on
more frequent exhaust system replacement costs. I would imagine this
may translate into other repair costs as well. It's the nature of the
beast.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"