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
Tools for Homebuilders, Part 1
Terry Edwards covers some of the less-often discussed aspects of homebuilding, from the decision-making processes, to the best sources for assistance to choosing a project director (and deciding if you need one).
2018 Homebuilt Aircraft Directory
So you want to buy or build an Experimental Aircraft? Heres how to find the perfect project. Introduction Directory compiled by Omar Filipovic.
Free Flight
When developing a strategy for a flight, it’s important to know the limitations of XM weather, NEXRAD radar, moving maps and other tools.
Wind Tunnel
The author discusses the theory and effect of constant-speed propellers on piston-engine airplane performance, and compares fixed-pitch versus constant-speed props, effect on thrust HP and propulsion, the comprises involved in choosing a prop, how props perform in various conditions and phases of flight, how variable-pitch props work, and why a constant-speed prop is the best choice for high-performance aircraft.