# How to calculate the line strength for paragliding lines?

Posted by Martin Havel on

To calculate the line strength for paragliding, follow these steps:

1. Determine the maximum flight load for the paraglider.

2. Count the number of lower A and B lines in the first and second ranges, excluding the stabilizer lines. Let's call this count "countAB."

3. Calculate the minimum acceptable line breaking strength for lower A and B lines using the formula: Minimum strength for lower A and B lines = (max flight load x 8) / countAB

4. Count the number of lower C, D, and E lines in the first and second ranges, excluding the stabilizer lines. Let's call this count "countCDE."

5. Calculate the minimum acceptable line breaking strength for lower C, D, and E lines using the formula: Minimum strength for lower C, D, and E lines = (max flight load x 6) / countCDE

6. Repeat steps 2 to 5 for the mid and upper levels, adjusting the counts and formulas accordingly.

7. Ensure that the minimum line breaking strength for upper lines is at least 30kg.

By following these steps, you can determine the minimum acceptable line breaking strength for each category of paragliding lines based on the maximum flight load and the number of lines in each category.

Video
Our own Line Tearing Machine used at Fly2Base Paragliding Shop.
https://youtu.be/S94P-PaXJSw

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