![[Credit: Mike Davenport]](https://www.kitplanes.com/wp-content/uploads/2026/08/Over-Stave-Lake-3.jpg?w=534&h=462&crop=1 "Glasair Sportsman 2+2 Build Part 3")
![Coming in for a landing at Humberd’s Farm [All Images Credited to Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/07/9-1.jpg?w=265&h=198&crop=1 "Overcoming Setbacks on the Zenith 750SD Xtreme")
![Humberd and his daughter using the 701 for some farm duty transportation. [All Images Credited to Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/05/1-3.jpg?w=265&h=198&crop=1 "Builder’s Spotlight")
![Checking out East Tennessee scenery from the 701. [Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/04/3.jpg?w=265&h=198&crop=1 "Builder’s Spotlight")
![[Credit: Jon Humberd]](https://www.kitplanes.com/wp-content/uploads/2026/02/20-2.jpg?w=265&h=198&crop=1 "Epic Is Back")
Effect of Propeller RPM on Speed, Efficiency, Noise, and Vibration
Getting better performance from a constant-speed prop.
Changing a Perfectly Good Airplane
Designing and building a modified RANS S-9, part 2. By Michael Ryer and John Wells.
Static Port Location and Altitude Calibration
Often a challenge, accuracy depends on three things: location, location, location.
In Case You Missed It
Aircraft Handling: What’s It Mean To You?
Two seasoned test pilots, Chuck Berthe and Ed Wischmeyer, discuss their favorite aircraft and the traits that make the aircraft endearing. They also offer a brief history of aircraft design, and discuss the payoffs and compromises inherent in any design effort. Some of their selections are surprising. a Staff Report.
Here We Go Again
Looking ahead to the aircraft kits and plans—for airplanes and rotorcraft—available for 2025