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  1. #1
    Senior Member Mountainfitter's Avatar
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    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.








  2. #2
    Member jdempsey's Avatar
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    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).

  3. #3
    Senior Member SGT Rock's Avatar
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    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.
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  4. #4
    Senior Member SmokeHouse's Avatar
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    WOW,,, thanks for the info... sorry it didn't work out, but better to know now than later.

  5. #5
    BLUEFIN 774's Avatar
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    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.
    Take care,
    Bluefin


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  6. #6
    Senior Member NCPatrick's Avatar
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    Wow, thanks for the pictures. That really puts it in perspective for me. Thanks for posting and saving folks a lot of time and $$$.


    "Civilization is the limitless multiplication of unnecessary necessities."
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  7. #7
    WV's Avatar
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    Mountainfitter,
    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!

  8. #8
    Oh-No's Avatar
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    What was the weight of the Beta tester?

  9. #9
    Senior Member ikemouser's Avatar
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    Also why not try a stronger cuben fiber?

  10. #10
    Oh-No's Avatar
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    Quote Originally Posted by ikemouser View Post
    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.

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