John deakin manifold pressure switch
John deakin pilot...
In this month's column AV's John Deakin moves from the black knobs (MP) to the blue ones (RPM) Like manifold pressure (see my previous.Questions about the Continental IO-520/550
OK folks, there is some good advice here, and some not so good so I will try to do some sorting out. But geez the content of a thread on pprune is NEVER going to take the place of good education, with data backed facts.
John deakin pelican's perch John deakin pilot Chalkie wrote: If you study the articles by John Deakin, you will see that 'the unburnt fuel is used for cooling' is an old wives tale. At a fixed RPM / Manifold pressure, as you pull the red knob leaner than best power, you get less power. 
And doing it for real.
Clintons post, was to be humble about it, the best so far, I am not one of the three amigo's but he knows exactly what I am talking about. I can only suggest IBGwhoever you are read your PM and call me.
John deakin mixture magic
It really pisses me off when someone on here asks a seriously good question or bunch of them, and expects to get ALL the education in a reply on pprune. Then when there is a solution to their quest for knowledge for some reason they won't pick up the phone.
Lets get one thing straight from the start, AVGAS, ULP etc etc, all have about the same energy in them, it is the way we burn it that matters. This could be several pages long just this. but lets remember the IO520 and my IO540....apart from s