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Valved dry bag


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  • #1234922
    Jed Augustine
    BPL Member

    @jaugusti

    Locale: Appalachians/Rockies

    Hey y'all-

    This is an idea I have been kicking around for awhile but haven't gotten a chance to try. I think it has a lot of potential. I'd appreciate any and all comments.

    So you need a pack liner, a bear bag, and a way to give rigidity to your frameless pack? It seems to me that a valved dry bag could serve all of these purposes. Think about it: stuff all of your gear in there (except maybe the sharp/sharp edged items) put it in your bag valve-side up, use your pack's compression system to tighten things up, and then blow up the dry bag as much as it will go, effectively filling all of the left over space. Everything stays dry and you get a nice firm pack. After dinner throw all of your food in and haul it up a tree.

    What do y'all think?

    #1487014
    Joe Clement
    BPL Member

    @skinewmexico

    Locale: Southwest

    Should work. I've got a couple, I'll have to try it in my Jam2 sometime.

    #1487016
    Jed Augustine
    BPL Member

    @jaugusti

    Locale: Appalachians/Rockies

    Excellent. I'd love to here the results. I imagine the most difficult part would be having a dry bag that matches the specifications of your pack well.

    #1487017
    Nate Meinzer
    Member

    @rezniem

    Locale: San Francisco

    I've heard this works too..

    #1487021
    Jed Augustine
    BPL Member

    @jaugusti

    Locale: Appalachians/Rockies

    1 item 4 uses!

    #1487092
    Joe Kuster
    BPL Member

    @slacklinejoe

    Locale: Flatirons

    I've actually used this technique (more for river crossings though). It can work, but on a frameless pack I found it "rounded" my pack agressively so things fit less than ideally and made it much harder to pack for comfortable support.

    #1487209
    Art Sandt
    Member

    @artsandt

    >It can work, but on a frameless pack I found it "rounded" my pack agressively so things fit less than ideally and made it much harder to pack for comfortable support.

    Yep. That's what I've found too.

    #1488184
    Diane “Piper” Soini
    BPL Member

    @sbhikes

    Locale: Santa Barbara

    If the valved drybag is also a sunshower, you can take a shower on your zero days.

    I have a pocket shower and can stow my quilt inside, blow it up and provide some protection from compression. It's not big enough to fill up my pack, however.

    #1488717
    Bob dylan
    Member

    @ineedenergy

    This is a great idea. I have heard of people doing something similar, so I can't wait to hear how it works out for everyone.

    #1489405
    Vick Hines
    Member

    @vickrhines

    Locale: Central Texas

    Have tried it using Hypalon dry bags. It works as long as the bag holds air, but any failure to seal will let the bag sag. As someone noted, the air pressure makes the bag cylindrical, putting the center of mass further from your back – an inefficient carrying situation. OK for portages of reasonable distance but not something I would like to haul all day.

    Something else to consider. In backpacking, you normally ascend and descend constantly. On some trails, altitude can change 3,000 feet or more during the day. As you ascend, pressure in the bag increases relative to the barometric pressure outside, and the bag is more likely to bleed air. As you descend, whether the bag leaks or not, the relative air pressure in the bag will decrease, causing it to sag. The only way to keep pressure up would be to pump it or to open and re-close the bag to normalize the pressure.

    #1489674
    chris towles
    Member

    @ctowles

    Locale: Teton Country

    i have a pretty nice watershed rf welded drybag that i will many times carry on backpacking trips. it is one with a ziplock bag type closure. i use it like a mini refrigerator for items that need to stay cold. close up the bag, tie it to a big rock and sink it in the lake right off shore. i usually use a small piece of cord to tie it to a root on the bank just so it doesn;t get any bright ideas about floating away. keeps your food cold, and since it is submerged there is no smell so it is for the most part animal proof. keeps butter, cheese, veggies, fruit nice and cold for a couple of days.

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