Every Hot Rod should have a tachometer, and if yours didn't come with one you've got a ton of options. With a Benjamin as the budget, we decided to test seven models from Summit Racing to see how ...

The SpeedTalker DN (UI) DeviceNet shaft-speed tachometer converts pulse-train frequencies from a wide range of single-ended or differential, single-channel, or quadrature sensors into rpm units.

Ever since the first race cars were built, it's been helpful for drivers to know their engine speed. It may sound obvious, but engine power is always a function of engine speed, so accurately knowing ...

The circuit shown in the figure below will have a display reading of “1999” for an input frequency of 33.33Hz (equivalent to 1999 rpm). The 0.0477µF capacitor (C1) should have a ...

The 2022 Nissan Frontier was unveiled last week and on first impressions, it appears to be far superior to the outgoing model. However, there is one oddity that has caught the attention of some social ...

Have you tried buying a '68-'70 instrument cluster with the 140-mph speedometer and 8,000-rpm tach recently? More than likely, your wallet hurts just thinking about it. Today's treasured 140/8,000 ...

RPM stands for revolutions per minute, and in cars, it measures how many times the engine’s crankshaft makes one full rotation every minute and how many times each piston goes up and down in its ...

The Ford Mustang's receiving a heavy refresh for 2018 including updates to its design, tech, and powertrains, and now it appears we know the new, higher redline for the GT model powered by the ...