Vehicle speed (mph), engine speed (rpm), tire diameter (inches), trans gear ratio, and rear axle gear ratio are all interrelated. If you know four out of five of these values, you can determine what ...

Different gears like spur, bevel, worm and wormwheel, rack and pinion, meshed gears, and threaded bars serve various purposes. When selecting a gear system, consider speed, direction, force, space, ...

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 ...

At one time it wasn't unusual for a hot rod's emphasis to be strictly based on performance; the goal may have been top speed on the dry lakes, or a low elapsed time at the dragstrip, but proper ...