All About Pulleys Now you'll be able to explain to your buddies what pulley ratios mean and why your car overheats at every stoplight.

The rpm at which this occurs depends on the alternator/crankshaft pulley ratio as well as the nuances of the internal windings (see above), so two alternators with the same ratio may still self ...

Starting with small input and large output pulleys allows the optimal engine and input pulley rpm to turn the driven or output pulley much slower.

We take a big-block Chevy stroker and illustrate the power gains offered by supercharging in general and the pulley changes for that power gain. - Super Chevy Magazine ...

1. Driven speed or ratio The typical program works with one belt section at a time, first finding all combinations of standard pulley sizes that produce a driven rpm within the desired speed range.

Depending on the vehicle’s speed, the sides of each pulley move toward or away from each other, varying the drive ratio, passes the chain into a groove formed between the pulleys.

The conical valleys of the pulleys can increase and decrease in width, which changes the belt diameter and the gear ratio as a result.