# Pulley Diagram

Pulley Diagram. The sprockets on a bike, for example, are a type of pulley, because when they spin, they drive other sprockets on the bike, that in turn rotate the rear wheel. The rope is 'pulled' on the effort side and the weight being lifted is on the right hand side, called the 'load'.

Right: Pulley wheels can also be used to join different parts of a machine together. The strain of the load is divided into two whilst one final effort lifts the entire load. When dealing with a fixed pulley and a moving pulley, as shown in the diagram below, always work out which of the efforts move about the movable pulley.

### In this case, the pulleys are simply transmitting power.

This produces a high strength-to-weight ratio advantageous to fractional horsepower pulleys.

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The rope is 'pulled' on the effort side and the weight being lifted is on the right hand side, called the 'load'. In general a single pulley is useful as it allows the labourer (shown right) to lift the weight without bending his back. The serpentine belt diagram, belts, tensioners, idlers and idler pulleys listed below are from GATES and they shows the serpentine belt routing for the year, make, model, engine shown.