Ropes don't like this? @HardIsEasy

Uploaded March 2026 | Updated September 2026, 4 hours ago

Lab tests to determine the effects of Grooves in the carabiners on Climbing Ropes.

Big thanks for @mammut for having me and dedicating all the time and resources to make these tests.

$Complete Guide to Carabiners - Shapes, Styles & How they Fail | Ep.2 Detailed Class on Carabiners. You will learn why there are so many different Shapes / Sizes & Styles of the Carabiners. How to choose & use them Safely and all the ways a Carabiner could Fail on loads lower than what they are rated for (kN on the spine of the Carabiner) and how to avoid that. ⏩ NEXT: https://youtu.be/0gWOiqPAZDw ⏪ PREVIOUS: https://youtu.be/hEK2NCoET4E 🔗 FULL PLAYLIST: https://www.youtube.com/playlist?list=PL5FEOhiQGSo8PBwTZPeiwQGcxQ0xB99Gt 00:00 Intro 00:44 Aluminium Alloy 01:34 Steel 01:54 Hot-Forged 02:48 Shapes - Oval vs D 03:55 Shapes - HMS (Pear) 05:08 Shapes - Belay carabiners 06:52 Shapes - QuickLink 07:43 Gate - Non-Locking 08:59 Gate - How to Correctly use 2 non-locking carabiners? 10:22 Gate - Screw gate 11:17 Gate - Auto-Locking 13:24 Size - Is smaller better? 14:57 Strength - What matters in real world? 18:08 Strength - Can you break Cross-Loaded carabiner? 19:44 Strength - Nose Hook - Dangerous! 20:59 Strength - Carabiner bent over the edge 22:10 Strength - Triload 24:08 When to Retire your carabiner? 25:43 Microfractures - Can you Drop your carabiner? 27:20 Bonus question � Choosing Guide for Beginners For bolted single pitch climbing: 1x Belay Device Carabiner: Mammut Bionic Cross Lock - https://bit.ly/3AagrPT Mammut Smart HMS - https://bit.ly/3AdgcmS Black Diamond Grid Lock EDELRID HMS Bulletproof 1-2x small size, D shape, autolocker or screw gate for Tether / Lanyard or other use cases (having multifunctional carabiners is always handy): Nordwand Micro Lock: https://bit.ly/37m9zSQ The fastests screw gate Ive ever tried, but most of them work fine, so choose whatever is pretty to you. For bolted multipitches you might want to add: 2x small, D shape screw gate for connecting anchor to bolts: Nordwand Micro Lock: https://bit.ly/37m9zSQ 1x bigger, screw or autolocker for Master point: Workhorse HMS: https://bit.ly/3jmlNRh * Above links might be affiliate and give me small benefit. ❤ If you are getting value out of my videos and wanna feel good - consider supporting me https://hardiseasy.com Because that makes a big difference and allows me to do this project! Deep Thanks! Ben ❤ Special Thanks For Mammut for helping me to create this episode! � Additional resources: Corrosion in Climbing Carabiners https://rockclimbingcompany.blogspot.com/2009/09/corrosion-in-climbing-carabiners.html Forces at work in a real fall https://www.petzl.com/BE/en/Sport/Forces-at-work-in-a-real-fall?ActivityName=Rock-climbing Black Diamond QC LAB: WEAKNESS OF NOSE-HOOKED CARABINERS https://www.blackdiamondequipment.com/en_ES/stories/experience-story-qc-lab-weakness-of-nosehooked-carabiners/ DMM Nose Hooked tests https://dmmwales.com/knowledge/may-2015/carabiner-and-bolt-interaction$

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