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Petzl Coeur Pulse Tested - $70 Bolts!?!?!
🕑 Added 2021-05-17 13:31:00 +0000 UTCWe were able to break $70 bolts because of Jake Torren and Thomas Hollinghurst were so generous. The Petzl Coeur Pulse (https://amzn.to/3bjDQEf) is a removable bolt that does not require any tools... after a perfect 12mm hole is drilled and cleaned). Thank you Bobby Hutton and Mike Rogers for destroying things for science with me. MBS is 25kn in shear and 20kn in tension. We got 47kn in shear and it pulled out at 17kn in tension. The drill bits for this are available at https://www.caveexploration.org/gear and use the code HOWNOT2 for 5% off most things on the site.
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00:00 Intro 00:21 About the bolt 05:16 Stuck Open? 06:28 Alternatives 08:21 Drill Bits 10:36 Installing 11:44 1st Test 12:45 Comparing holes 14:05 2nd Test 16:13 3rd Test 17:37 Conclusion 18:30
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