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Gym Climbing Forces - Climbing Science

How much force is on the climber, the belayer and the bolt when you whip at the gym? 2 years ago we did some tests at the gym and it was really popular, but people said our hertz, or rate in which the load cell reads was too slow to pick up the peak force. So we literally helped create the LineScale3 which is the only load cell to record internally and reads at 1280hz as opposed to 40hz. I sold @HardisEasy some of my LS3s and he did some tests at a climbing gym with Mr LineScale3 himself (Andy Reidrich). Below is all his data that he collected for the video that he made about it found at His video only included the force on the climber but we went through all his data and organized it to compare the force on the belayer and the quickdraw. The spreadsheet includes the data from our two videos. Get a $20 off coupon for the LS3 on our GEAR page.

Our first episode testing forces in the gym was either well timed with everyone getting locked down or actually intriguing to a lot of people. It was one of the few videos

Thank you Celine Gissot for the bar chart. Thank you Rocco Fucetola for the graphing software.

Michal Studniarek sent me this PDF and explained how rope stretch plays a big role in the difference between A+B. Check it out!

LineScale 3

This was developed because of our first video. We helped design it with LineGrip INC to be faster, stronger and smarter than any all in one load cell on the market. After 18 months of development, they are now in stock and you can buy them. We have a $20 coupon code on our GEAR PAGE

All 13 of Hard is Easy's Tests