Stepper Motor Gauges – Instrument Technology Part 2

This is a look at the completed cluster. As you can see, it includes the Revolution gauges mentioned above, along with a matching Speedometer, fuel level gauge and transmission temperature gauge. Options for the various instruments are considerable. You can select gauge lighting colors and styles, various integrated warning lamps, high beam and turn signal indicators and more. This, along with many other options allow you to tailor the instrument to your car.

Part 2 of Wayne Scraba’s series on instrument technology continues to examine the stepper motor options, using Speed Hut as an example.

When we last left you, we discussed the differences between mechanical, electric and stepper motor gauges. There are positives and negatives for all of them, but in today’s world, it’s really hard to ignore modern stepper motor examples. Some companies such as Speed Hut make use of stepper motor technology in all of their instruments. The layout allows for full 270-degree gauge sweep along with a much thinner gauge case. Speed Hut also has a unique threaded gauge body. A large ring simply threads on the backside providing a simple and effective means for mounting gauges.

Building a panel for a large number of instruments can sometimes prove perplexing. Running out of room in the panel and between the panel and the dash structure is always an issue. That’s where the thin gauge case and unique mounting arrangement of the Speed Hut gauges came into play for one of our projects (a Buick Turbo T). And as it turns out, Speed Hut’s very latest LED lit gauges are even thinner than the originals we used.

In this segment, we’ll examine voltmeters and fuel pressure gauges along with installation and wiring. By making use of a “piggyback” layout, gauge wiring can be simplified. You can also see how we laid out the gauges and wired them in a Buick GN-style dash. For a closer look, check out the accompanying photos: