XaiJu
howNOTtoHighline
howNOTtoHighline

patreon


How bad are knots in Dyneema?

PATRONS: I want to do more. Let me explain...

Thank you so much for all your support. You are the backbone of HowNOT2, and make my quest to answer every question about gear possible by being a reliable source of funds to cover the HowNOT2 operating costs (e.g. lab rent and improvements, hard costs of making episodes, etc.).  100% of donations go back into the channel, I don't live on it.  When I signed up for Patreon a few years ago, I opted to go with the "Per Episode" model and can't change it within the platform.  At the request of many people, I'd like to transition to simulate having a fixed monthly donation amount.  This gives you predictability and me the freedom to post as much as I want, in order to answer every question I possibly can. To achieve this, I am capping the donation-supported posts at 8X per month, as I anticipate ramping up my production to 15-30 pieces of content per month.

MAIN CHANNEL will still be the best and most thorough testing.  1x per week minimum, sometimes 2x.

The new CLIPS CHANNEL is about the quality I put out a few years ago, but is an outlet for simpler, shorter and/or niche(r) content.  Potentially 4-7x per week.

INSTAGRAM/SHORTS are awesome for concepts to get shit tested before making full videos or posting 1 off tests.  2-7x per week.

And finally, BLOGS are a great outlet when something is better in written form.  I'm literally working on 10 books like the bolting bible right now.



TODAY'S CONTENT (February: 3rd of 8 donation-supported posts)

You are supposed to splice Dyneema to retain most of its strength.  What happens if you tie a figure 8 in it?  

Our Results with Sk75 Dyneema with figure 8s: 

3mm - 4.06kN (MBS 10.2kN) 

4mm - 8.86kN (MBS 21.8kN) 

6mm - 12.93kN (MBS 34.25kN) 

8mm - 20.77kN (MBS 54.7kN)



MOST RECENT BONUS CONTENT

Dog bone Clips Episode https://youtu.be/z4KZqLF37wY

Another dog bone Clips Episode https://youtu.be/Sq8NXpSmYSg

Ropeman 1 desheathing rope https://www.instagram.com/p/CoObDl9pntX/



HOTTEST PROJECTS

Designing fatigue testing machine, ordering parts for a "mini drop tower" off some trees I have, HowNOT2 Break Stuff ebook, nerdy whoopie sling tests, diving deep in fall factor tests and I've been testing and breaking Rocky Talkies for months.


Thank you for investing in breaking gear fear!

How bad are knots in Dyneema?

Comments

Is this done to "get more strength" out of the dyneema/technora?

That what we often do when rigging for stunts in the TV and movie industry. 6 or so wraps on the biner, tie it of with a Slipknot and secure the loop of the Slipknot back into biner making sure the load strand is on the spine side of the biner. Like a tension less hitch. Use of this depends on situations of course but for low height slow moving body weight flying it’s perfect. If we get bigger forces and winches involved we start splicing.

I think a frictionless hitch around a connector like a carabiner might cinch up around the carabiner pretty dang tight like a barrel knot does, making it difficult to remove. Not a problem in my machine as it would break and I cut it off but in practical use in the wild. I'll play with it and see what happens.

The break takes place in the tight rope radius within the knot under load. Could you run the rope around the metal of a carabiner several times and then tie the free end back around the load bearing entry rope? The intention would be to provide a larger bend radius under load and have the knot isolated from the load force by the friction of the wrap around the carabiner leg.


More Creators