DIY Firewall Boots

Need to seal your firewall, reduce carbon monoxide and allow components to move freely? Chuck Dieterich shows you how to make firewall boots.

Aero ‘lectrics

Jim Weir shows you how to create and install LED lights and run them from ships power inexpensively and easily.

Aero ‘lectrics

Jim Weir uses quarter-wave magic to make a coaxial balun and a VOR/LOC splitter.

Aero ‘lectrics

Jim Weir continues his series on digital logic (CMOS), and makes the little logic circuits do things that their inventors never considered.

Aero ‘lectrics

So far in Jim Weirs investigation of digital logic, hes explored small scale integration. This time, its time to ramp it up a bit and use some medium scale integration devices that will remember your settings.

Aero ‘lectrics

The subject this month is Schmitt triggers and digital gates, which can be employed for a variety of purposes in homebuilt aircraft including use with switches and sensors or panel lighting.

Aero ‘lectrics

If you need a horn to sound when the airspeed drops below a certain level or when the power is cut and the landing gear is still up and locked, an electronic circuitry solution is the lightest, most reliable and most cost-effective way to go.

Aero ‘lectrics

This month, we look at how an airspeed indicator works and rig up a simple calibration tool for it;

Aero ‘lectrics

This month we get into actually building the portable antenna that was described last month;

Aero ‘lectrics

In this first of a two-part series, Jim Weir builds a low-cost, high-efficiency portable ground-based antenna system that he used to great effect in the recent CAFE 400 (fuel efficiency) race in Northern California. You can do it, too.

In Case You Missed it

Stressing Structure

Z-Brackets and the free-body diagram.

Editor’s Log

Accepting the risk.

Samurai Homebuilder

Using a Japanese pull saw on your aircraft project.

Ask the DAR

DAR Mel Asberry continues his discussion of aircraft operating limitations by explaining what those Phase II flight test rules mean.