Letters

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Say You Want an Evolution?Great article on the Evolution, and what an excellent design by Lancair. The numbers you gave on the glide ratio...

Aero ‘lectrics

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Lights on the radiator.

Unlabeled Switch and Circuit Breakers

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For safety’s sake, all switches and circuit breakers should be labeled as to function and direction.

Simplified One-Off Electronic Projects

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As homebuilders, we are accustomed to doing a lot of preliminary and/or tooling work to build a couple of pieces for our aircraft. Tom Kuffel created an auxiliary fuel transfer pump controller for his GlaStar Sportsman for next to nothing, a real savings over the retail price of $300, and he describes how he did it.

Keeping a Battery Current

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“With an anxiety that almost amounted to agony, I collected the instruments of life around me, that I might infuse a spark of being...

A New Name on the Alternative Engine Block

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When NSI went under in 2005, builders who had an engine or were waiting on parts for one might have found themselves in a world of hurt. But seeing an opportunity, John and Gwen Maxwell acquired the assets of the company and have endeavored since to make a sound product even better; by Marc Cook.

Wind Tunnel

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Increasing the weight of an aircraft will affect its performance in all phases of flight.

Kitfox Super Sport

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Marc Cook reports on the process of developing a new Lycoming O-233 engine package for the Kitfox Series 7 Super Sport and samples the result.
Here is a Starlink Mini dish installed on a Merlin test article. The Mini dish can be installed on a window insode the cabin with a suction mount.

Starlink In The Air

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How to Buy, Install, and Use Starlink in Your Aircraft  The long cross-country got quiet somewhere over Nebraska when the last cell tower faded below...

The Case of No Rotor RPM Indication

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I am now in the flight-testing stage with my Hummingbird helicopter. Personally, I’ve always liked the 40 hours of required flight testing as it...

In Case You Missed It

Completions

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Builders share their successes.

The Effects of Ignition Advance on Cylinder Head Temperature, Speed, and Efficiency

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If a little is good, more is better, and too much should be just about right. Not!

Error Chain

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Bubble, bubble, boil… and trouble! Vapor lock stops a Lycoming during Phase 1 testing. By Bill Repucci.

Good Fundamentals

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I am often asked what it takes to fly many different airplanes, especially when...