"Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." — Archimedes (287- 212 B.C.) On the street, everything is a compromise. Power is now easier to make than ...

Assuming a properly tuned engine, there are three factors that contribute to poor streetability: long cam duration, high compression ratios, and excessive cruise rpm. Since cam selection is largely ...

What if-and believe me, this is a hypothetical-you were trying to put a wild, rare, 200-hp naturally aspirated Autech SR20DE from the hottest of the nonturbo S15 Silvias into a first-generation Miata, ...

If you run your variable frequency drives at 60 Hz and below, you are not alone. Nearly all the VFDs in North America operate below this nominal frequency threshold. Yet a growing number of ...

This definitely sounds like the setup to a joke that's only funny to a hyper-specific audience. "What's the difference between a close ratio and a wide ratio transmission? About a second and a half ...

Worm gear reducers play a key role in mechanical systems due to their ability to achieve high gear reduction in a simple, compact design. This unique functionality makes them suitable for a range of ...

Few vehicle modifications have as major an impact as changing gear ratios, and it's because your car's gear ratio directly translates to how it delivers power. Think about it: The gear ratio, or how ...

Optional axle ratios can tailor pickup truck power and efficiency to suit your needs as long as the gearing keeps the engine in its torque sweet spot. Often overlooked, optional gear ratios play a key ...

Most off-road vehicles have crawl ratios—extra gearing to increase forward thrust—between 30 and about 100. But the Mercedes Unimog, with its "Super Crawler" gear, has an absurd crawl ratio over 3000.