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Jim Weir

Jim Weir
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Jim Weir is the chief avioniker at RST Engineering. He answers avionics questions in the Internet newsgroup www.pilotsofamerica.com–Maintenance. His technical advisor, Cyndi Weir, got her Masters degree in English and Journalism and keeps Jim on the straight and narrow. Check out their web site at www.rst-engr.com/kitplanes for previous articles and supplements.

Prelude to NextGen LEDs

Just in this last few months (from June 2022), there has been a true revolution in the state of the art for power LEDs....

Fourier Strikes Again

Ah, the email call for April 15, 2022, just arrived. Michael Zwijacz wrote to me: “Hello Jim, I’ve been following you in KITPLANES® for many...

Shining a Light on History

Back in 2008, George W. Bush was president and 100LL was $2.50 a gallon. Production of 80/87 had stopped the previous year, and this...

Power, Scotty, I Gotta Have More Power

“I canna give ye more, Cap’n. The dilithium crystals are already overloaded.” —Star Trek This month’s article is more of a simple tutorial instead of a...

Round…and Around…We Go

Stay with me here. This is going to be a very interesting and somewhat difficult project. But worth the read, I guarantee. No matter how...

What a Darling(ton) Noisemaker

Mostly we’d like our airplanes to be quiet. Somehow, “airplane” and “quiet” don’t belong in the same sentence. We’ve got roughly 5000 explosions per...

Can You Hear Me Now?

For those of you in aircraft with magnificent audio systems—stereo music and multi-input switching panels that have push-button selection of your half-dozen headphone inputs—this...

LED to a Landing

We have come a long way with light emitting diodes. They went from $200 a bulb in 1968 to 5 cents a bulb in...

This Is an EXCELlent Idea

For a long time after I bought my first airplane (N2014V, the Cessna 120 heavy), the problem of keeping the aircraft data (weight and...

QLF–Amateur Radio in Your Aircraft

To find the earliest recorded amateur radio in an aircraft, we have go back to 1912 when Lieutenant B.T. James (RAF) strapped a pair...

In Case You Missed it

Building the Bearhawk LSA

Assembling some assemblies.

Arion Lightning

Test pilot Chuck Berthe flew the Arion Lightning not once but twice, in two different factory demonstrators. The first flight raised concerns about the trim system and longitudinal stability, while the second flight (months later) impressed with improvements to the trim system and the consequent betterment of the airplane’s handling characteristics.

It’s Time to Start

It’s said you don’t know where to begin until someone shines a light down...

Replacing Fuel and Oil Lines

It is a good idea to cap off the old lines and fittings...