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Old 18th Nov 2014, 01:57
  #92 (permalink)  
andrewr
 
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So you're going to run your engine ROP to avoid the dangers and problems of LOP. Great.

How will you know your engine is running ROP?
Not sure where you're going with this question. I would suggest you start full rich, and if leaning increases EGT you are ROP.

Personally, I would just operate according to the Lycoming recommendations, but I'm not making any recommendations about what you do.

I was discussing this topic with a guy who designs ECUs for a living. His comments were that
1) Peak EGT is very lean already and
2) EGT is a terrible way to set mixture. You have no idea what the actual lambda (mixture) is at e.g. 50F ROP/LOP. However, it is the best we have in aircraft due to the lead in the fuel.

I would be interested in a chart of lambda vs EGT - particularly if it showed whether it varied with rpm and manifold pressure but I can't find one.
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