Electric Motors, Internal Combustion and Rotational Motion
These are some really old kitchen mixers. People buy them and restore them. Usually this means paint, maybe replacing a frayed cord. Vast majority of the time, the motor still works. You don't need to touch that part. The job is mostly cosmetic. Do you know why? Because they are electric. It won't have rusted rings, or worn out valve seats, dried out gaskets or a clogged carburetor. Electric motors have two parts, one of which moves. The stator and the rotor. You apply current, a magnetic field is created, and the shaft spins. They make instant power, lots of it, reach incredible RPM, and can operate for decades without any maintenance. Literally perfect for turning something, unlike reciprocating motion of pistons, powered by flammable liquids catching on fire. As such, there's no carbon building up, no filters to clog and replace. No oil to get dirty and break down by being in contact with a 3,600F flame front, and no metal-on-metal contact, prevented only by a thin film...