It’s the latest in instrumentation for the well-appointed shop — an acoustically coupled fast Fourier transform tachometer. Sounds expensive, but it’s really just using a smartphone spectrum analyzer ...

If you’re into anything even vaguely mechanical on the broad hacking spectrum, you’ve come into contact with things that spin. Sometimes, it’s important to know precisely how fast they are spinning!

Digital dashboards have become nearly standard in new vehicles, with large screens replacing traditional speedometers and tachometers. Yet some new cars still ...

In the vein of Project X, the AMD Chevelle started with an extensive ground up restoration, with the overall goal to make it a long-term test project car. With the original 396 long gone, we built and ...

With more and more new-car buyers choosing automatic transmissions over manuals, why do tachometers still have such a large presence on dashboards? The tachometer displays engine speed in revolutions ...

Tachometers are used to measure the velocity of a rotating object. Tachometers operate on the principle that a driven motor (i.e., a motor operated as a generator) produces a voltage that is ...

Tachometry, the measurement of the speed of spin of rotating objects, is a common application. Some of those objects, however, have quirky aspects that make them extra interesting, even scary. One ...

Dear Car Talk: I have a new 2017 Honda Ridgeline. The speedometer is digital; it shows numbers only. It has no dial. However, it still has an analog tachometer. The transmission is an automatic ...

Nigel first entered the world of automotive journalism in the mid-80s, working for what was then the “bible” of weekly automotive content - Motoring News. Those were the days of tip-tap typewriters, ...