![The Hatz Biplane, NX71VH, re-engineered to be powered by a 124 hp radial engine. [Credit: Hatz Biplane Association]](https://www.kitplanes.com/wp-content/uploads/2026/09/Hatz-Bantam-Radial-124hp_1000004521-Topaz-Gigapixel-2x-scale.jpg?w=534&h=462&crop=1 "Airplane Almost No One Knows, Part One"){kind=tracking}
![[Credit: CubCrafters]](https://www.kitplanes.com/wp-content/uploads/2026/09/DSC04228.jpg?w=265&h=198&crop=1 "CubCrafters’ New Turboprop MOSAIC LSA")
![A compact H3R Halon 1211 extinguisher, sized for a two-seat cockpit and safe on energized electrical fires. [Credit: H3R Aviation]](https://www.kitplanes.com/wp-content/uploads/2026/09/mfr_H3R_A344T_Halon_1p25lb.jpg_preview-Topaz-Gigapixel-2x-scale.jpg?w=265&h=198&crop=1 "Choosing the Right Cockpit Fire Extinguisher for Your Aircraft"){kind=tracking}
![The Zenith CH701 outside the hangar at SMX, fresh from paint. The stars-and-stripes theme marks America’s 250th and the CH701’s 40th anniversary. [Credit: Carson Stilson]](https://www.kitplanes.com/wp-content/uploads/2026/09/IMG_1726.jpg?w=265&h=198&crop=1 "Zenith CH 701: A Proof of Concept Homebuilt on a Budget")
![Low-level aerial view of AirVenture, looking down the main thoroughfare toward Boeing Plaza, with the flightline and runway 18/36 beyond. [Credit: LeRoy Cook]](https://www.kitplanes.com/wp-content/uploads/2026/09/IMG_4521.jpg?w=265&h=198&crop=1 "AirVenture 2026 in Review")
Wire You Surprised?
There are three basic methods of marking your wires so that 10 years from now you’ll be able to go back and track down trouble.
Build, Test, Refine and Fix—Part 1: Ground Tests
At some point, a configuration of the airplane is frozen, a prototype is built and testing begins.
IV Tube for Crankcase Ventilation
Recently, my neighbor Ed needed a part to upgrade the installation of his crankcase breather/oil separator kit.
Master Caution
My original intent for this month’s treatise was to produce the first installment of my upcoming Kitfox build series, which I have been greatly looking forward to. However, as often happens in life, life itself got in the way.
Wanted: Engine Competition
Imagine a time not too long ago when pilots embarking on the delicious endeavor to build their own airplanes could consider multiple sources for just about any engine on the menu.
2025 Engine Buyer’s Guide
Traditional engines dominate, but the alternatives are looking more mainstream.
In Case You Missed It
Tricked-Out Tailwheel
T3 suspension system eliminates relaunches when touchdowns are a bit too firm.
Firewall Forward: Choosing Your Engine
Many factors go into choosing the right engine for your homebuilt. In Part 1 of this new series, Dave Prizio provides an overview of the options available in Lycoming and Lycoming-type engines, and what you need to consider when making a decision.
Roll Your Own
Although the KK-1 is scratch-built, builders Ken Scott and Ken Krueger have used all of the modern tools at their disposal to expedite the design and building process. This month, Scott discusses the more than satisfactory results of load-testing the wing and horizontal stab;