This article was updated Feb. 28, 2023. It was originally published March 1, 2000. Planetary gears can supply high levels of torque and high-speed reduction. They are also relatively compact compared ...

Gearboxes let engineers adjust servomotors’ operating speed and resulting torque. But understanding the two major types will lead to lower costs and better performance. Engineers have long used ...

Even if you’re an experienced home mechanic, there are parts of your car that probably give you trouble. They’re either too hard to access or too complex to work within your garage. Transmissions tend ...