Invention of universal joints dates back many centuries. Even though the universal joint’s mechanism seems simple, the physics behind this mechanism are rather complicated and interesting. In most of the literature, readers who are trying to understand the physics behind universal joints are bombarded with complex mathematical relationships. In this page we will understand the working of universal joints in a simple yet logical manner.
A detailed webpage version of the video is given below.
Why Universal Joints are used ?
Universal joints also known as Hooke’s joints are commonly used to transfer mechanical power between 2 shafts when their axes are at an angle to each other. The way power is transmitted in a rear wheel drive (RWD) vehicle might have got your attention. They use universal joints. As you can see from the Fig.1, two universal joints are required to transmit power from the engine to differential.