Recently an engine rebuilder called with a question I had not heard before. He asked if multigrade oils would increase the possibility of valve sticking in piston aircraft engines. My first response was “why would you think that?” Then I started to think through the mechanics of the problem.
aircraft engines
Modern engines for a modern world
One of the reasons that GA has not grown is that flying today’s aircraft scares the hell out of young people.
A master class in how to winterize your airplane
There has always been controversy about how to best prepare general aviation aircraft engines for long-term storage, but from my viewpoint, you’ve covered all the bases and then some.
What causes exhaust valve recession in an engine?
There are several theories, but the one that makes the most sense to me is that the lead in avgas helps sealing and improves thermal heat transfer.
ASTM working on standards for hybrid-electric engines
“This proposed standard is intended to support companies that are creating hybrid-electric power generation systems for use as the primary source of electrical propulsive power in electric aircraft,” says ASTM member David Eichstedt. “They will benefit from a more clearly-defined certification path, but aircraft developers will also benefit.”
Ask Paul: What is this mystery engine?
It’s best to do your research before buying an airplane with an engine you aren’t familiar with.
Does this low-time aircraft engine really need an overhaul?
Mark’s problem is a good example of a situation that is common in the world today. And with the cost of avgas these days, we’re entering a time where more and more aircraft will be idle for long periods of time — and the results could possibly be even worse than what Mark has seen.
CubCrafters debuts new engine for Carbon Cub
The new engine is a fixed pitch version of the larger displacement 186-hp fuel injected constant speed prop CC340 engine first introduced by CubCrafters in 2017.
Ask Paul: Can you tell me my engine’s horsepower?
I recently bought a project Stinson Station Wagon 108-3 that is equipped with an O-435 Lycoming engine. Is there a way to determine if the engine is the O-435 190-hp or the O-435 225-hp?