Now the exceedingly popular and extraordinarily useful 11-part Build Your Skills: Metal Series is available as a single PDF. This must-have addition to your library was written by RV-7 builder Dan Checkoway and carefully illustrated for first-time metal-workers and old hands alike. Most everything you need to now, from material handling and cutting to deburring, drilling and riveting is in this series.
In Case You Missed It
What’s New
RV-12 building assistance is available on DVD from HomebuiltHELP; Plane-Power has introduced a new alternator for Continental 520 and 550 engines; WhirlWind announces a new composite, ground-adjustable propeller for the Rotax 912/914 engine.
![At Sun ‘n Fun 2026, Viking Aircraft Engines surprised the crowd with its first complete kit — the V-42, a high-wing twin powered by two Honda-based engines. Here’s an early look. [Credit: Andrew Robinson]](https://www.kitplanes.com/wp-content/uploads/2026/08/P1020293.jpg?w=324&h=160&crop=1 "Viking V-42 Twin")
Viking V-42 Twin
Outside the exhibition hangers at Sun ‘n Fun, Viking Aircraft Engines had its usual...
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.
Design Process: Distribution of Lift Coefficient
In the last few months, we have explored how planform and taper affect both...