On 09/26/06 15:38, Andrew Gideon wrote:
I'm not asking about LOP itself, but why it's so "hot" snicker a topic.
It would seem to be a simple thing to me: the cylinders run at decent
temperatures LOP or they do not. What else is there?

I know at least one person in person, and others from their postings, that
are getting success running LOP. I also know at least two persons that
think that LOP is some myth that kills cylinders. One of those two people
tells a story of someone that bought gami injectors, ran LOP, and then
cooked four of six cylinders.

What I don't understand - and what that person hasn't answered, BTW,
perhaps because he doesn't know - is why that person that "cooked" four
cylinders would have failed to see a problem immediately on his CHT probes.

So...what am I missing?

- Andrew


I think John Deakin covered this topic in one of his columns. He explained
why most of the POHs are worded the way they are, even when it doesn't make
sense. For example, have a look at this article (I think this is the right
one - I can't find the index to his articles on the AVWeb site any longer):

http://www.avweb.com/news/pelican/186216-1.html

My impression of the point he tried to make was that the manufacturers
believe LOP operations is hard to get right unless you really know what
you're doing (and have the proper measuring equipment, i.e.: EGT) and that
ROP operations is "safer" from a legal standpoint.

.... but it's been a while since I've read his articles on the topic, so
I could be off here.

--
Mark Hansen, PP-ASEL, Instrument Airplane
Cal Aggie Flying Farmers
Sacramento, CA