How to Calculate the Cycle Time for a Log Splitter

Log splitters are able to split softwood or hardwood logs that have been pre-cut into rounds. They are typically assembled with either a hydraulic or electrical system and are rated by tons of pressure. The lower the pressure rating, the narrower the logs that can be split. Splitters are also rated on cycle time, sometimes called "return cycle time," which refers to the time it takes for the splitter's wedge to become full extended and retracted. Calculating the cycle time is straightforward once you know a few key figures.

Measuring tape
Log splitter owner's manual
Calculator

Instructions

- 1
  Measure the length of the splitter's cylinder and the cylinder rod's radius. As an example, a log splitter has a cylinder length of 20 inches and a cylinder rod radius of 3 inches.
- 2
  Multiply the length of the cylinder by the cylinder rod radius squared by 3.1416 to calculate the volume of the splitter. In the example, multiplying 20 by 9 by 3.1416 equals 565.488 cubic inches.
- 3
  Divide the result from step 2 by 231 to convert to gallons. In the example, dividing 565.488 by 231 equals 2.448 gallons.
- 4
  Refer to your the log splitter's owner's manual to find the splitter's pumping capacity in gallons per minute. As an example, the splitter has a pumping capacity of 5 gallons per minute.
- 5
  Divide the result from step 3 by the result from step 4. In the example, dividing 2.488 by 5 equals 0.4976 minutes.
- 6
  Multiply the result from step 5 by 60 to convert to seconds. In the example, multiplying 0.4976 by 60 equals 29.856 seconds.
- 7
  Multiply the result from step 6 by 2 to determine the total cycle time. In the example, multiplying 29.856 by 2 equals 59.712 seconds.

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