Tag: homebuilt design
![[Credit: LeRoy Cook]](https://www.kitplanes.com/wp-content/uploads/2026/02/IMG_4581.jpg?w=324&h=160&crop=1 "The Wild Traveler")
In Case You Missed It
Two-axis Electric Trim Controller for Under $50
This homebuilt two-axis electric trim controller has all the functions of the fanciest commercial units, yet it costs less than $50 for the parts.
Oil Filter Testing
Some aviation oil filters fall short of efficiency standards, but still protect engines—barely. Understand what yours really does.