Enter the number of hours per 10 frames into the Rev Rate Calculator. The calculator will evaluate the bowling ball rev rate.

Rev Rate Formula

The following two example problems outline the steps and information needed to calculate the Rev Rate.

RR = HP10 * 15
• Where RR is the Rev Rate (RPM)
• HP10 is the number of hours per 10 frames

To calculate the rev rate, multiply the number of hours per 10 frames, then multiply by 15.

How to Calculate Rev Rate?

The following example problems outline how to calculate Rev Rate.

Example Problem #1:

1. First, determine the number of hours per 10 frames.
• The number of hours per 10 frames is given as: 30.
2. Finally, calculate the Rev Rate using the equation above:

RR = HP10 * 15

The values provided above are inserted into the equation below and computed.

RR = 30 * 15 = 450 (RPM)

Example Problem #2:

For this problem, the variables required are provided below:

number of hours per 10 frames = 60

Test your knowledge using the equation and check your answer with the calculator..

RR = HP10 * 15 = ?