Thank you for doing this test, I've always trusted the 3/8 quicklinks I use, but its nice to see the smaller ones breaking so far above the rated value, the 5/16 is rated at 1600 pound workload (7kn) but broke above 30kn.
Dang, I copied and pasted that screen but apparently forgot to edit that section. The values should be correct, just the heading was overlooked. Thanks for letting me know!
Thanks, it's really nice to know where these fail at. I've used tons of import (hardware store grade) 5/16" quick links for climbing lower off anchors. Not having a hydraulic pull machine I used a hand cable winch to put tension on. Calculated the tension by deflection of the span under my body weight and by torque/mechanical advantage of the winch (decent agreement). I could get about 3,300 pounds of tension. I miked the quick links before and after pull, absolutely no permanent distortion.
Sounds like you would need a drop testing tower to get the results your after. Canyoneering anchors ideally never see this type of load and we are not set up currently for this type of testing. Rock climbing leader fall videos/info may be something you could look into.
@@onropecanyoneeringllc1576 - In theory, the loading rate on this kind of hardware, in the range we imagine can be seen in the field, has almost zero effect on the strength of the item. For a metal object like this, the loading rate to get dynamic effects would need to be VERY high. A 100' drop tower with a heavy chain connecting might be able to produce a break that would count as "dynamic".
Great information! I would love to know which brand(s) you tested. I'm curious to know how the Q Links from Lowe's/Home Depot compare to the super inexpensive ones from Harbor Freight.
The brand we tested is called Fehr, the links are made in china. Because these are used for rappelling on occasion we typically only buy links stamped working load. 1,550lbs is common from home depot, these are stamped with 1,600 lbs. I have never looked what harbor freight carries, but they are not exactly known for quality in general.
I did not realize they made aluminum quick-links. I imagine these would beak at a much lower rating. We mostly test gear used for Canyoneering but If you send a link to the product I can see if we have time to schedule a test.
@@onropecanyoneeringllc1576 I have only seen Aluminum RLs in 7mm and 10mm, from Wichard/Maillons Rapide. They are very expensive, and not commonly used in climbing nor in canyoning.
I bought a new dog leash for my 70lb American pitbull. The leash itself is really nice, double nylon, double stitched with dual control. But the actual clasp... kinda dainty. I really don't trust it. So I'm gonna cut it off and put a 6mm quick link and a 25kn spin lock carabiner on the end. Just wanted to make sure 6mm is strong enough... after watching I'd sure say so
Thank you for doing this test, I've always trusted the 3/8 quicklinks I use, but its nice to see the smaller ones breaking so far above the rated value, the 5/16 is rated at 1600 pound workload (7kn) but broke above 30kn.
Huge thanks for doing this. Really good to know. Your results at 4:54 say 5/16, but I assume this was the results for the 1/4" links
Dang, I copied and pasted that screen but apparently forgot to edit that section. The values should be correct, just the heading was overlooked. Thanks for letting me know!
Thanks, it's really nice to know where these fail at. I've used tons of import (hardware store grade) 5/16" quick links for climbing lower off anchors. Not having a hydraulic pull machine I used a hand cable winch to put tension on. Calculated the tension by deflection of the span under my body weight and by torque/mechanical advantage of the winch (decent agreement). I could get about 3,300 pounds of tension. I miked the quick links before and after pull, absolutely no permanent distortion.
Shit... Around 9,000 lbs... Can't imagine a scenario where that couldn't be trusted for climbing
Wow great info !
Thanks just hoping to get some data points out there for those interested. Read alot of crazy comments on social media and hoped this would help.
Good data.. anyone know where we can go for jerk force types and how they affect such figures? (instead of slow pulling forces)
Sounds like you would need a drop testing tower to get the results your after. Canyoneering anchors ideally never see this type of load and we are not set up currently for this type of testing. Rock climbing leader fall videos/info may be something you could look into.
@@onropecanyoneeringllc1576 - In theory, the loading rate on this kind of hardware, in the range we imagine can be seen in the field, has almost zero effect on the strength of the item. For a metal object like this, the loading rate to get dynamic effects would need to be VERY high. A 100' drop tower with a heavy chain connecting might be able to produce a break that would count as "dynamic".
Great information!
I would love to know which brand(s) you tested. I'm curious to know how the Q Links from Lowe's/Home Depot compare to the super inexpensive ones from Harbor Freight.
The brand we tested is called Fehr, the links are made in china. Because these are used for rappelling on occasion we typically only buy links stamped working load. 1,550lbs is common from home depot, these are stamped with 1,600 lbs. I have never looked what harbor freight carries, but they are not exactly known for quality in general.
Thanks for the follow up!
Thanks for posting this. What brand links were these and where were they purchased? Any testing done on Curt/Reese towing style quick links?
Would you please do this with 5/16” & 1/4” aluminum quick links?
I did not realize they made aluminum quick-links. I imagine these would beak at a much lower rating. We mostly test gear used for Canyoneering but If you send a link to the product I can see if we have time to schedule a test.
@@onropecanyoneeringllc1576 I have only seen Aluminum RLs in 7mm and 10mm, from Wichard/Maillons Rapide. They are very expensive, and not commonly used in climbing nor in canyoning.
I bought a new dog leash for my 70lb American pitbull. The leash itself is really nice, double nylon, double stitched with dual control. But the actual clasp... kinda dainty. I really don't trust it. So I'm gonna cut it off and put a 6mm quick link and a 25kn spin lock carabiner on the end. Just wanted to make sure 6mm is strong enough... after watching I'd sure say so
are these made of iron? thx
Have you ever tested shackles?
Have you tried the stainless versions?