Katoom
That is a good article generally, but there is one paragraph that ruins it.
Finally (but very importantly), lower RPMs produce lower EGTs at a given power output. At 65% cruise in my airplane, the EGT at 30"/2100 is more than 50F lower than the EGT at 26"/2350. This allows me to lean very aggressively (I cruise right at peak EGT) without the danger of over-temping my exhaust valves or cylinder heads. I wind up with a cleaner engine (fewer deposits on exhaust valve stems and spark plugs) plus better fuel economy.
Now surely Mike has learned since 1995 that his thinking here is not based on proven test data. But a good article all the same if you ignore that one OWT
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Now the ALCOR article is interesting, I have not read it yet, and only scanned it, and spotted some OWT's in there too. Anyone else spot them? Chocky frog for the first three (not sure how many there are yet). Again possibly a good article but ruined with some pearlers of proven myths. I'll have a read later today, and see how well i stack up to all you eagle eye folk.