There is no complex science behind what straight-cut gears are. It's exactly as it sounds, gears with teeth that run straight out from the center of the wheel, rather than slanting in a spiral. The ...

Luffy's Gear 5 is strong, but it will evolve even further later on in One Piece.

Tilted landing gears, while engineered specifically for the express purpose of helping jets land and take off from runways, might look odd, like the wheels on the wings of a B-52 bomber. If you've ...