by Mike Busch | Mar 6, 2024 | Magazine Articles
Often confused and misunderstood, these two abnormal combustion phenomena are as different as night and day. Although we often hear people describe what goes on inside the cylinders of an Otto-cycle engine as being an explosion – i.e., a violent, nearly-instantaneous...
by Mike Busch | Mar 6, 2024 | Magazine Articles
These two key measurements can tell us a lot about what’s going on inside our cylinders. My column last month talked about the fact that our piston aircraft engines convert only about one-third of the energy contained in avgas into useful energy to the propeller....
by Mike Busch | Mar 6, 2024 | Magazine Articles
The modern probe-per-cylinder digital engine monitor is a marvelous tool for keeping tabs on your engine’s health and troubleshooting its maladies. Here are some tips for figuring out what those bars and digits mean. This is embarrassing, but I might as well come...
by Mike Busch | Mar 1, 2024 | AOPA Pilot Magazine, Magazine Articles
Weak compression doesn’t always mean that the cylinder has to come off. For most of my nearly six decades as an aircraft owner and three decades as an A&P, the rule about cylinders was simple: If the compression reading was less than 60/80, the cylinder had to...
by Mike Busch | Feb 1, 2024 | AOPA Pilot Magazine, Magazine Articles
Does unleaded fuel really cause exhaust valve seat recession? The October 27 announcement by the University of North Dakota (UND) flight school that it was terminating its year-long test of Swift UL94 unleaded avgas and returning to 100LL came as a shock and...
