What is crankshaft?

A crankshaft is like the arm of a clock that helps turn motion from one place to another.

Imagine you're on a swing. You push off the ground with your feet, and the swing moves forward. The crankshaft does something similar inside a car or engine, it turns the up-and-down motion of the pistons into the circular motion that makes the wheels spin.

Think of the crankshaft as a long stick with arms attached to it, like a pizza chef spinning dough. Each arm connects to a piston, those are the parts that go up and down inside the engine. When the pistons move, they push on the crankshaft’s arms, making it spin around.

This spinning motion is what makes the car move forward, just like how your legs help you pedal a bike or swim in a pool.

Without a crankshaft, the engine would be like a clock without hands, it wouldn’t turn or move. The crankshaft takes all that little up-and-down action and turns it into smooth, steady motion, just like how a swing goes round and round when you keep pushing!