My lawn mower died AGAIN !

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Typical Lycoming and Continental flat 4s and 6s you find in your average Cessna or Piper run closer to the low 2000s at cruise. A big O-540/580 used in competition aerobatic aircraft might hit 3000, but not for long periods.

Lead does provide lubrication but it was actually originally put into avgas as an octane booster. It was the only way to hit the very high octanes (100/130 and 115/145) that the big WWII aero engines needed for high altitude supercharged operations.

Shows you how often I fly small aircraft these days. The last small plane I flew in was a Rutan Long-EZ and I know at cruise it was doing around 2500 RPM.
 
Maybe the planes are setup different up here? I don't mess with them but several of my friend are pilots. I read somewhere that per capita Alaska is #1 with airplanes/pilots. Lots of places that's the only way to get there.
 
I think this thread is going up in flames.
 
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Yep. To prevent premature detonation I am going to...
 
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