CRANKSHAFTS WERE CREATED BY AL-JAZARI

HOW IT WAS MADE

• He incorporated with a crank-connecting rod mechanism in his twin-cylinder pump.
• Al-Jazari's mechanism consisted of a wheel setting several crank pins into motion
• The wheel's motion being circular and the pins moving back-and-forth in a straight line.
• The crankshaft transforms continuous rotary motion into a linear reciprocating motion

HOW IT IS USED

• the part of an engine that translates reciprocating linear piston motion into rotation
• typically connected to a flywheel to reduce the pulsation characteristic of the four-stroke cycle

TODAY'S USE

• Used in many toys
• Used in engines