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

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## 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

## How to Calculate Rev Rate?

The following example problems outline how to calculate Rev Rate.

Example Problem #1:

- First, determine the number of hours per 10 frames.
- The number of hours per 10 frames is given as: 30.

- 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** = ?**