Realizing that it’s essentially a cycloidal drive meshed with a planetary gear set, he got to work in CAD ... but they don’t even spin, they just cycle in a way that drives the outer shell ...

The screwdriver isn’t motorized ... The gear ratios allow you to apply more torque without needing a long handle. As you may have guessed, the internal arrangement is a planetary gear drive.

Read more: Major Car Wheel Brands ... in a manual transmission driveline. Inside the automatic transmission, a series of bands and clutches, operated by the hydraulic system, work together to shift ...

Most electric vehicles don't even have a traditional transmission ... allowing the driver to rest their left foot and let the car's computer, torque converter, and planetary gear set to shift between ...