Originally Posted by
BatteriesNotIncluded
Not full rich for landing? For go-arounds?
Assume you are returning to land after a long flight at altitude; richen as necessary during descent to ensure smooth engine operation, then for approach and landing leave the mixture where it was because you should only be using low power. On short finals richen as required for a possible go around. (At sea level that would be full rich.)
With a basic trainer if you have less than 2500 RPM and less than full throttle, lean till engine runs rough then richen ONLY ENOUGH for smooth operation. If you have a fancy engine monitor then use this with Lean Assist.
You really cannot cause detonation in a low compression aircraft engine (8.5:1 or less) any rough running is unbalanced power pulses so smooth running is good.
Deakin will tell you; detonation can only happen in a very narrow band of power/fuel/air/BMEP and either a richer OR a leaner mixture will stop it.
Keep it safe out there
