Page 2 of 4 FirstFirst 1234 LastLast
Results 11 to 20 of 33
  1. #11
    Senior Member Raul Perez's Avatar
    Join Date
    Nov 2009
    Location
    Long Island, NY
    Hammock
    1.1 Blackbird or Traveler SL
    Tarp
    OES Deluxe Cuben
    Insulation
    Yeti - all seasons
    Suspension
    Dynaglide Whoopies
    Posts
    2,363
    Images
    49
    I've had my cuben in a nasty rain storm. I noticed no difference once I wiped it down with my camp towel. A little moist as with anything that's gotten soaked. But once strung up at the other camp site... dried in a matter of 15-20 minutes.
    "If you give a monkey a gun and he shoots someone, you dont blame the monkey"

    The end of the world is not coming in December, it is happening now in my living room. - TFC Rick

    http://watermonkey.net/

    Youtube Channel:

    http://www.youtube.com/user/RaulPerez1?feature=mhee

  2. #12

    Join Date
    Sep 2010
    Location
    Haworth, UK
    Hammock
    DangerBird
    Tarp
    HG Custom Cuben
    Insulation
    UQ, TQ & PeaPod
    Suspension
    Whoopies & Dutch
    Posts
    102
    There was a thread a while back, ( if I can find it, I'll add a link here), discussing the hydrostatic head figure for cuben. Some reports indicate it is quite low & not as waterproof as some tents! If that is the case, some water could be held within the laminate layers, which would seem to be borne out by your experiments/experiences.
    I still fancy one though

  3. #13
    Phillipsart's Avatar
    Join Date
    Jun 2011
    Location
    Central Coast, QLD, Australia
    Hammock
    Warbonnet Blackbird 1.1 dbl
    Tarp
    Superfly,HG CUBEN
    Insulation
    Yeti and Burrow
    Suspension
    Whoopie Slings
    Posts
    543
    Very interesting post. Maybe Cuben is not for me. It rains a lot where i live. I've been contemplating a cuben tarp, but after reading this, I think I'll save my money and stick with my Warbonnet Superfly

  4. #14
    Senior Member BearChaser's Avatar
    Join Date
    Jan 2011
    Location
    West Virginia
    Hammock
    WBBB, D.I.Y. KSSH
    Tarp
    ZPacks
    Insulation
    H.G. & Warbonnet
    Suspension
    Whoopies & Dutch
    Posts
    398
    Joey, I remember you have a ZPack, and the obvious in your details to the left. Anyway, did you seal your tarp on the inside or outside of the sewn ridge line? I sealed the inside of mine, but I was thinking that if its sealed on the inside like mine that the actual thread running the entire length of the ride line may have absorbed some water. The seal on the inside of course kept it from leaking through. Anywhere the thread is exposed to water, it would absorb it. You also have 12 tie out loops plus the little tie out on the outside top made from material that would absorb water.

    I recently had my ZPack tarp at the MAHHA Pre-Hike, and it rained pretty much 3 days on it. I didn't pay attention when I packed up, but I didn't notice any additional weight either. I wiped it down before packing it also.

    If someone is up to it, cause it seams like to much time and work for me. Being honest here. You could take all the tie out lines off your tarp weigh it dry, then soak it in the tub for awhile. Take it out, shake it off the best you can, then weigh it. Then wipe it down the best you can and weigh it again. Remember, any materials such as thread or tie out loops will absorb some of the water. So we gotta take that into account.

  5. #15
    Senior Member WV's Avatar
    Join Date
    Feb 2008
    Location
    southeast WV
    Hammock
    DIY
    Posts
    4,084
    Images
    207
    Quote Originally Posted by trunks View Post
    There was a thread a while back, ( if I can find it, I'll add a link here), discussing the hydrostatic head figure for cuben. Some reports indicate it is quite low & not as waterproof as some tents! If that is the case, some water could be held within the laminate layers, which would seem to be borne out by your experiments/experiences.
    I still fancy one though
    Careful there, trunks. There's nothing I've tried or read about that suggests water is being absorbed by the material, just that it has water on the surface when it gets wet. We don't know that cuben doesn't absorb water; it will take more testing to tell us whether it gets between the layers. We do know (from reading) that nylon (even silicone coated nylon) does absorb water, and that polyester (which is used for the outer layers of ordinary cuben) does not. If anything, my small test suggests that the extra weight is that of water clinging to the surface, but more testing is needed.

  6. #16
    Senior Member Joey's Avatar
    Join Date
    Dec 2010
    Location
    Western Maryland
    Posts
    1,808
    Images
    51
    I sealed my tarp from the outside, so as not to have any soak through on the seams. My lines are zing it, and they may hold a little water. I was feeling it more in the material, and could tell when I was rolling it up to put it in the skins. It's had me confused as to what I was feeling, but I know it was notably heavier. I don't have a scale of the sorts to test this at home with.

    I was more curious if anyone had experienced something like this to help explain what I was dealing with. WV's tests have answered a lot, and it seems a simple wipe down cloth will take care of this issue for me. It'll be about 3 weeks before I can get out again, but I'll still be using my cuben tarp! Even if it does get heavier after rain, it's still lighter than my silnylon tarp.

    This was simply something I hadn't expected and am trying to understand cuben fiber a little better is all.

  7. #17

    Join Date
    Sep 2010
    Location
    Rochester, NY
    Hammock
    Hennesy
    Tarp
    various
    Insulation
    pads, foam
    Posts
    4,435
    Images
    17
    FWIW - I think mylar is the skin for Cuben so I looked up mylar thinking I would find one problem but found a different possible answer:

    http://en.wikipedia.org/wiki/BoPET

    "If it were produced without any additives, the surface of the film would be so smooth that layers would adhere strongly to one another when the film is wound up, similar to the sticking of clean glass plates when stacked. To make handling possible, microscopic inert inorganic particles are usually embedded in the PET to roughen the surface of the film."

    That, in turn, leaves me wondering if the issue is either the pores in the Mylar holding minute drops so that shaking does not impart enough energy to get them off but blotting as in wiping does. Another issue could be the additive absorbs water.
    Just some things to explore. ;-)

  8. #18

    Join Date
    Sep 2010
    Location
    Haworth, UK
    Hammock
    DangerBird
    Tarp
    HG Custom Cuben
    Insulation
    UQ, TQ & PeaPod
    Suspension
    Whoopies & Dutch
    Posts
    102
    Quote Originally Posted by WV View Post
    Careful there, trunks. There's nothing I've tried or read about that suggests water is being absorbed by the material, just that it has water on the surface when it gets wet. We don't know that cuben doesn't absorb water; it will take more testing to tell us whether it gets between the layers. We do know (from reading) that nylon (even silicone coated nylon) does absorb water, and that polyester (which is used for the outer layers of ordinary cuben) does not. If anything, my small test suggests that the extra weight is that of water clinging to the surface, but more testing is needed.
    Sorry David, maybe i should have chosen my words more carefully...

    These threads make interesting reading though:

    http://www.backpackinglight.com/cgi-...hread_id=44516

    and the follow up tests:

    http://www.backpackinglight.com/cgi-...26&startat=100

    To save you searching i have saved the pdfs as jpg's:





    These are the results of testing the hydrostatic head of different weights of Cuben, both new and aged.

    The hydrostatic head is measured by the amount of water, in mm, which can be suspended above the fabric before water seeps through a material, 1500mm is considered rainproof.

    The results seem to speak for themselves...

    Now, perhaps, and i say perhaps, what could be happening is that if water can seep through cuben, which tests show it can. Then surely it is possible that some water could also be held within the pores of the fabric, thus adding the extra weight?

    I'm not saying this water is also going between the laminate layers, you're right, that would need further testing. But theoretically, after repeated wetting, packing away & folding...

    James

  9. #19

    Join Date
    Sep 2010
    Location
    Rochester, NY
    Hammock
    Hennesy
    Tarp
    various
    Insulation
    pads, foam
    Posts
    4,435
    Images
    17
    Am I reading this correctly? It looks like sub 1 oz cuben is technically not rainproof?

  10. #20

    Join Date
    Sep 2010
    Location
    Haworth, UK
    Hammock
    DangerBird
    Tarp
    HG Custom Cuben
    Insulation
    UQ, TQ & PeaPod
    Suspension
    Whoopies & Dutch
    Posts
    102
    Quote Originally Posted by nothermark View Post
    Am I reading this correctly? It looks like sub 1 oz cuben is technically not rainproof?
    If you look towards the middle of the bottom graph, there are some more sub 1oz that seem to score better when new, but of the 10 sub 1oz cuben samples tested, only 2 seem to pass the "rainproof" test when aged!

    I just want to point out that these tests & results aren't mine - before i get shot down in flames. I've just done the internet searches to find the info

Similar Threads

  1. Rain tarp or no rain tarp - South-East Asia
    By someone_great in forum Weather Protection
    Replies: 21
    Last Post: 01-01-2014, 15:59
  2. Rain chaps in light/ moderate/ heavy rain
    By TheSaxMan in forum General Hammock Talk
    Replies: 2
    Last Post: 05-14-2013, 00:14
  3. Help with Tarp/Hammock setup during heavy rain
    By amwolffman in forum Weather Protection
    Replies: 12
    Last Post: 05-09-2013, 22:19
  4. Lawson Equip. HexaLite Cuben Fiber CTF3 Hammock Tarp (Pic Heavy)
    By BearChaser in forum Weather Protection
    Replies: 18
    Last Post: 09-08-2011, 21:12
  5. Heavy Rain/Wind
    By KMACK in forum Trip Reports
    Replies: 10
    Last Post: 11-05-2010, 12:59

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •