Once upon a time, manual transmissions were standard in virtually every American passenger car. Rowing through the gears of a "standard shift" transmission was a way of life. Every man, woman, and ...

The most reliable means for changing shaft speed remains a mechanical variable-speed transmission. These drives are used to provide a variable output speed from a constant-speed power source (as in a ...

The automatic transmissions found in many modern vehicles are marvels of engineering. They rely on a huge number of internal parts, like clutch packs, various gears, solenoids, a valve body, hydraulic ...

What Is a "Granny Gear?" Opinions vary on what constitutes a "granny transmission," but in a nutshell it's a manual transmission with an extremely low gear ratio that allows the vehicle to crawl along ...

In the first of this two-part series, we explored how new computer-based modeling of geared systems is allowing the design of gear microgeometry for durability and lower noise, vibration, and ...