If you’re building a Glasair Sportsman, you have the choice of a 180-HP IO-360 or the beefier IO-390. Which engine is best? It depends? In this video, Kitplanes Magazine editor Marc Cook analyzes the pros and cons.
In Case You Missed It
Wind Tunnel
Don your thinking caps, kids. Its time to learn about the value of nondimensionalized aerodynamic data.
