![The best builders learn to combine both mindsets. They build like engineers but think like future mechanics. [Credit: Bill Wilson]](https://www.kitplanes.com/wp-content/uploads/2026/07/IMG_0037.jpg?w=534&h=462&crop=1 "Building vs. Fixing")
![[Credit: Wikimedia Commons]](https://www.kitplanes.com/wp-content/uploads/2026/07/F-117_Nighthawk_Front.jpg?w=265&h=198&crop=1 "Odd and Unusual Aircraft")
![After nearly 75 years, the basic Tailwind design remains sound. [Credit: LeRoy Cook]](https://www.kitplanes.com/wp-content/uploads/2026/07/IMG_4636.jpg?w=265&h=198&crop=1 "The Wittman Tailwind")
![Trimming composites gets the full PPE job. [Credit: Eric Stewart]](https://www.kitplanes.com/wp-content/uploads/2026/07/7-2.jpg?w=265&h=198&crop=1 "A Few of My Favorite Tools")
![[Credit: AdobeStock]](https://www.kitplanes.com/wp-content/uploads/2026/07/AdobeStock_125628775.jpg?w=265&h=198&crop=1 "Roll Recovery, Part 2")
Ask the DAR
Can a builder modify a Vans RV-12 kit under the 51% rule? How about changing the gross weight of a RANS S-7? Plus, the FAA releases revised homebuilding rules.
Engine Beat
There's a lot to know about aircraft oil: what to use, when to use it, when to change it. Steve Ells sheds some light on this essential fluid.
Light Stuff
Dave Martin looks at the future of ultralight-like SLSA trainers, and what may be in store from the FAA.
Letters
Compound Modifier Yes, the turbo-compound engine written about by Paul Lamar does make a good deal of sense. It is no more...
The Independence Project: Avionics
It’s time to install the shiny, expensive boxes in the RV-12. Yes, the avionics package goes in… and it’s not as difficult as it used to be. By Dave Martin.
Build a Bear: Mellow Yellow
Dave Prizio and team build a paint booth (too small), test drive charcoal masks and bunny suits, and discover the joys of covering your homebuilt plane with $400 per gallon paint.
Hose Protection
Ishmael Fuentes shows you how to protect and cool the hoses in your engine compartment by making a firesleeve.
Aero ‘lectrics
Heat and avionics don't get along all that well. Rather than installing a fan that runs all the time, Jim Weir suggests building and using a fan that runs only when you need it.
In Case You Missed It
Importing From Canada, Selling in Phase I
Question: There is this nice RV-4 available for sale in Canada. It’s been built...
How They Build Them in South Africa
During my recent visit to Sling Aircraft in Johannesburg, South Africa, to fly the...
What’s New
A glare shield for Garmin GPS units; Sportair USAs certified pre-owned LSA program; quick reference for aera and AV8OR Ace; Better Half VW announces Legal Eagle XL. Edited by Mary Bernard.
Problemas en México
I was dismayed to receive an alert from the Baja Bush Pilots that aviation authorities in Mexico have recently turned away Experimental aircraft after entering the country.