To calculate the Pulley Ratio (PR):
\[ PR = \frac{D_{driven}}{D_{drive}} \]
Where:
The pulley ratio is the ratio of the diameters of the driven pulley to the drive pulley. It determines the mechanical advantage and speed ratio of the pulley system[^1^][^2^].
Let's assume the following values:
Using the formula:
\[ PR = \frac{8}{4} = 2.00 \]
The pulley ratio is 2.00.