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  1. #1
    Member johnmoore8301's Avatar
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    bag between layers of a double layer bb?

    Probably a stupid question, but here goes... My hammock is still not here yet so i cant just go look. Im almost positive this cant work or i would have read about it by now. On a WBBB double layer, could you just stuff a sleeping bag between the layers for insulation, or would both layers be too compressed? If that wouldnt work, wouldnt it make sense for someone to make a hammock that the bottom layer hung far enough below the top layer that you could fill it will you own insulation, like an old sleeping bag or whatever else you could find??? Might be easier(cheaper) than rigging an underquilt? Thoughts?

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    DivaB's Avatar
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    It would be difficult to figure out how much leeway to give for any particular situation such as changing seasons and what not. Not to mention figuring in the stretch of the hammock body into the equation. Seems to me it would be a rough one to figure out, but with that said, it would be nice.

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    Senior Member Hiknhanger's Avatar
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    I have thought the same thing too. I think the hard part would be getting the perfect tension or snugness in the lower layer for your insulation that would neither compress or be so loose as to leave gaps for air to infiltrate. The current systems using shock cord don't have the compression force pushing up from below the insulation that could compromise loft while still keeping it up tight to you on the hammock. That's my 2 cents!

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    Ramblinrev's Avatar
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    At one point IIRC DD hammocks advertised their double layer as suitable for an emergency shelter by getting in between the double layers. Whether they still do I don't know and I am not even sure I remember this properly. I'm sure it has been done somewhere. How effective it was when tried I have no clue.
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    OutandBack's Avatar
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    Quote Originally Posted by johnmoore8301 View Post
    Probably a stupid question, but here goes... My hammock is still not here yet so i cant just go look. Im almost positive this cant work or i would have read about it by now. On a WBBB double layer, could you just stuff a sleeping bag between the layers for insulation, or would both layers be too compressed? If that wouldnt work, wouldnt it make sense for someone to make a hammock that the bottom layer hung far enough below the top layer that you could fill it will you own insulation, like an old sleeping bag or whatever else you could find??? Might be easier(cheaper) than rigging an underquilt? Thoughts?
    I use a single layer hammock with a 2QZQ under quilt protector to accomplish this task.
    Most if not all double layer hammocks are designed to support your body weight so the insulation would be compressed quite a bit. Many use CCF pads between the layers since they don't compress so much.
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  6. #6

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    I have used a 40* bag between the double layers of my DD Frontline. The bag was in the closed position so I actually had double thick insulation. Also between the layers - on top of the bag - I used a windsheild reflector. I was also in another 40* bag inside the hammock. Got down into the 30's and windy and slept warm
    I think that the material used in the two layers is the same size but I don't think the bag compressed as much as it would if I were laying directily on it.
    Maybe the need for room to "fluff" is not that critical.

  7. #7
    Senior Member JohnSawyer's Avatar
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    IMHO, a cheap, heavy sleeping bag might not compress that much, keeping you warmer. A down or high-quality bag would likely be cold in between the layers...

    Very interesting idea for car-campers! A heavy synthetic bag might be more comfortable than a pad!
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  8. #8
    Senior Member Oper8or's Avatar
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    Quote Originally Posted by Passinthru View Post
    I have used a 40* bag between the double layers of my DD Frontline. The bag was in the closed position so I actually had double thick insulation. Also between the layers - on top of the bag - I used a windsheild reflector. I was also in another 40* bag inside the hammock. Got down into the 30's and windy and slept warm
    I think that the material used in the two layers is the same size but I don't think the bag compressed as much as it would if I were laying directily on it.
    Maybe the need for room to "fluff" is not that critical.
    Ding ding ding. I think this is the route I am going to take. I'll see how it works out. I'm going to run my bottom layer at 1/16 inch per ft longer than my top layer. After laying in my hammock and measuring it (bless my wife for doing that for me), it doesnt stretch hardly at all. So it goes to reason that this method would work for me IF I use a synthetic sleeping bag so the compression wont have as much affect on the insulation.

    Thank you for posting this. You may have just solved my issue with this.

    I also found a thread that had a similar idea.
    Last edited by Oper8or; 08-05-2012 at 19:14. Reason: adding link
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  9. #9
    Member johnmoore8301's Avatar
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    thats kinda what i was thinking. if a hammock maker used a thicker(less stretchy) 1.7 top layer, and used a bottom layer that was cut larger than the top layer by a couple to a few inches in each direction, you would be able to stuff it with something without compressing it. maybe i need to break out the ol sewing machine and try and start something! lol

  10. #10
    camoxjeep's Avatar
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    I thought about this when I first got into this madness. Esp when I read about single layer and double layer hammocks. Heck if you make the lower layer "a box" under your top layer say 2" wide. Basically if you hung the top layer so it was very taunt the lower layer would hang down 2" in a box type form.
    ____________________________________top layer
    [___________________________________] bottom layer

    with velcro or zipper to close it off from wind and help keep the heat in?

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