Builder Spotlight

Gray oil is good, but what about black oil that looks like tar?

Improving an already capable panel. By Bob Markert.

Exhaust-expelling the remains.

Primed for a problem-engine trouble at the flick of a switch.

My husband has a mistress-I know because Ive seen them together!

Part 1: foundations of the build.

Question: I am building a gyroplane from pieces of an RAF 2000. I will be building my own frame with dropped keel and main...

Adding a 180-hp Titan engine to a Legend Cub.

There's always more to learn (Part 1).

Bubble, bubble, boil… and trouble! Vapor lock stops a Lycoming during Phase 1 testing. By Bill Repucci.