Cuben Fiber Hammocks
As some of you might know. I built and tested several cuben fiber hammocks over the last few months. I love how cuben fiber hammocks lay (flat) and felt like it was the perfect hammock material. I had even planned to offer them for sale in the future.
I however have decided to abandon this idea after a hammock failed while being used by a beta tester last weekend. The tester was moving around in the hammock after spending a night in it when it failed. Luckily he was only 12" off soft ground and was un-injured. The hammock was built using CT2K.08 which is a .75oz a yard material and has a break strength of 105lbs/inch.
The beta tester was testing the difference between the channel end and the gathered end. The failure took place 18" down from the gathered end which signifies this was a material issue and not a manufacturing issue. At first I thought it might have to do with how the end was "gathered" but after seeing pictures of the failure I realized that a failure like this could occur with a channel end as well.
I sent the hammock to a Materials Engineer and a Materials Scientist and they concluded that the CT2K.08 might not be an appropriate material since prolonged overloading could cause a failure. They suggested that I use a heavier/stronger material but due to the nature of the material this would not guarantee anything.
We are all fascinated by this awesome material but I think it has limitations and one of those limitations is being used as a hammock.
I am not going to discredit the use of the heavier material at this time because I cannot say whether a failure would or could occur. I just want to offer this post as a disclaimer. If you decide to build a cuben fiber hammock please use the hammock with care.
Here are some photos of the failure.
Man, that sucks... I was really hoping to see this develop into a viable UL option, although I've got to say I was never convinced laminated dyneema was appropriate for this application..
The physical stresses that go on in hammocking seem complex. A featherweight woven dyneema would seem ideal to me..
Honestly, the whole spectra/dyneema thing likely wont reach full potential until some superior material of the same sphere comes into existence which forces it to evolve (get cheaper).
Thanks for the update. I was thinking about buying some of that stuff to try the idea out. Looks like I can save that time and money. Still sounds good as a tarp though.
WOW,,, thanks for the info... sorry it didn't work out, but better to know now than later.
Too bad it did not work out. It Is much better to be safe when using this gear. I applaud you for letting the forum see the photos and warn others about the potential dangers of this material as it is now for use as a hammock.:eek:
Wow, thanks for the pictures. That really puts it in perspective for me. Thanks for posting and saving folks a lot of time and $$$.
That's bad news for those of us who were planning to try cuben hammocks, but your willingness to share details and photos can only help your endeavors. Thanks!
What was the weight of the Beta tester?
Also why not try a stronger cuben fiber?
If 0.75oz is not strong enough, then you are getting into the weight realm of 1.1oz nylon which is far cheaper than Cuben.
Originally Posted by ikemouser