8Chain and Sprocket systems Chain and sprocket systems use a chain to transmit rotary motion from the driver to the driven shaft. Sprocket is the name of the gear when it use a chain.The mechanism of the bicycle is a typical example
9Chain and Sprocket systems You can use the formula of the gears for this mechanism. It's the same.n1 . Z1 = n2 . Z2n1: sprocket 1 speedZ1: sprocket 1 teethn2: sprocket 2 speedZ2: sprocket 2 teeth
10Worm gearAnother way of making large speed reductions is to use a worm gear.You can think of the worm as if it were a gear with 1 tooth.
11Worm gear. Watch out n1 . 1 = n2 . Z2 You can use the formula of the gears for this mechanism. It's the same.n1 . 1 = n2 . Z2n1: screw 1 speedn2: gear 2 speedZ2: gear 2 teeth
12Rack and Pinion Systems. Rack and pinion systems involve changes between rotary and linear motion.