What is a Differential Gear Box? While travelling in a car, on a hard turn inside and outside wheels have different velocities, not just the direction but magnitude also - even after being connected to the same axle. But how ? Well, after reading this blog I’m pretty sure you’ll understand this beautiful and simple creation of mechanical engineering. FIRSTLY, WHAT IS THIS THING AND WHAT IT DOES? So, a differential is a device, usually but not necessarily employing gears, capable of transmitting torque and rotation through three shafts, almost always used in one of two ways: in one way, it receives one input and provides two outputs this is found in most automobiles and in the other way, it combines two inputs to create an output that is the sum, difference, or average, of the inputs. In automobiles and other wheeled vehicles, the differential allows each of the drivi...