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, ...

Higher, lower, taller, shorter, more, lesshow do you have any idea what guys are talking about when it comes to rear-axle gears? It's confusing, because the slang seems to contradict the math. Let's ...