Aero ‘lectrics

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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

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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

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

Aero ‘lectrics

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

Aero ‘lectrics

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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.

The Home Machinist

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If your hacksaw has been relegated to the bottom of your toolbox, chances are its because you don't know how to use it properly. Author Bob Fritz offers a primer on the subject that may make you think more highly of this underused tool. A discussion of cam construction and keyless chucks rounds out this installment.

Aero ‘lectrics

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Impressed by the quality of the cheap headsets he encountered on a recent commercial airliner flight, Jim Weir dissected the airline unit and has come up with a way to replicate it in your own shop.

Aero ‘lectrics

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Columnist Jim Weir comes up with what he thinks is the optimal design for getting power from the 12-volt aircraft battery to the LED without wasting any.

The Home Machinist

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Charlie Taylor, the Wright brothers trusted right-hand man and machinist, made their early powered flight experiments possible. And he built the engine using only a drill press, a lathe, a simple scale and more than a little ingenuity; by Bob Fritz.

The Home Machinist

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This month Home Machinist Bob Fritz answers readers letters and passes along some of their better ideas.

In Case You Missed It

Aero ‘lectrics

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The great ADS-B.

Second Chance Six

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Part 9: With good company and a plan of action, things got rolling! Including the wheels.

Disconnected Pitot Line

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Ever lose your airspeed in flight? The nylon lines held in the “push-grip” fittings...

DIY Wind Indicator

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Chuck Deiterichs description of a do-it-yourself wind indicator project includes tips, drawings, a parts listing, in-progress photos and a look at the finished product. His experimentation with the highly visible design takes the guesswork out of doing it right.