![[Credit: Lisa Credit]](https://www.kitplanes.com/wp-content/uploads/2026/10/Experimental.jpg?w=265&h=198&crop=1 "Have You Seen Your Oplims?")
![[Credit: Andrew Robinson]](https://www.kitplanes.com/wp-content/uploads/2026/10/737_VGs2.jpg?w=265&h=198&crop=1 "Vortex Generators")
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![[Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/10/Chute-Topaz-Gigapixel-2x-scale.jpg?w=265&h=198&crop=1 "Should You Consider A Whole Aircraft Parachute?"){kind=tracking}
Engine Update: EI Commander
EI Commander helps keep you aware of both whats happening with your engines electronic ignition and, as importantly, why. By Marc Cook.
Alternative Energies
JoeBen Bevirt addresses future energy and transportation needs by tackling them head-on-Jetsons style-with the Joby Monarch. By Dean Sigler.
Editor’s Log
Mary Bernard explores the background of Jeff Ackland and his new Radial Rocket RG, this issues cover story.
What’s New
Beyerdynamic introduces the HS 800 Aviation Headset, Zenith Aircrafts Zodiac CH 650 meets FAAs 51% rule, and Jeppesen NavData is now available for MGL Avionics systems.
Garmins New GTN Series
Paul Bertorelli reviews Garmins long-awaited GTN 650/750 navigators, and finds out how they stack up against the successful GNS 430/530 series.
Field Notes on an Installation
What you need to consider before installing Garmins new GTN 650/750 series navigators in your homebuilt.
Vroom!
Months of repair work netted Bill Repucci a new, more powerful engine for his RV-9. The increase in horsepower brings with it a shift in CG and handling characteristics.
Learning To Weld
Ken Scott finds that practice makes perfect (or pretty good) as he puts his newfound wire-feed welding skills to the task of replacing rotting wood hangar doors with sturdy, steel-frame ones.
The Ultimate Upgrade
With Lancair’s factory-authorized builder assistance program, new Evo owners Wendell and Martha Solesbee get a leg up on their project. Custom jigs and extra hands take weeks off the build time and ensure they’re ready for the next steps.
In Case You Missed It
Contributors
RON ALEXANDERRon Alexander has been part of the homebuilding scene for decades. He began...