Can't choose a bivi bag for the Alps
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I always just sleep with the HELP side down if there are other people around. |
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Just curious - what 1 person tent weighs a kg. Thanks! |
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clint helander wrote:I always just sleep with the HELP side down if there are other people around.I assumed that the HELP side was somewhat breathable while the bottom was not, as some bivybags are made. But it looks like that one uses the same fabric on both sides. My one person tent weights one kilogram and I always wake up covered in condensation all around in it. I really dream of something breathable. :) Here's is it from my latest adventure two nights ago: It was quite cold outside. |
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Pine Sap wrote:Just curious - what 1 person tent weighs a kg. Thanks!Firstlight and Direkt are pretty close. |
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Ray Pinpillage wrote: Firstlight and Direct are pretty close.That's why I specified that I am looking for something that is AT MOST 600 grams. I am now considering these two that should provide a great breathability: Exped eVent bivy bag outdoorfair.de/p-en-2132-ex… (t 565 grams but I'd probably need an extra 70 grams of foam pad to protect it) And borah gear: borahgear.com/eventbivy.html (600 grams) Also the rab Alpine, that's less than 500 grams! |
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Uhm. |
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That's the issue with bivy bags. Let me reiterate...there is almost no such thing as a waterproof bivy bag. The problem is that you have immediate contact with the fabric so you get a kind of contact soak. You will get wet if it rains, no way around it. Maybe not immediately, but you will. |
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mec.ca/product/5022-263/int…
160 dollahs and event top, durable 70d bottom, ~500g, NOT sealed by zippering in any serious rain you are somewhat screwed in any of these light bivy without a tarp your best bet should you encounter that situation is to turn over on your side/stomach and let the generally more waterproof bottom take the brunt of the storm with heavier "bomber" bivies (full zip, bomber WPB fabrics, hoops) you may not have to do this, but youll still get wet in a continuos downpour as you eventually need to enter and exit ... and the condensation ;) |
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What about this? |
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It's like you are trying to drive a nail with a screwdriver. |
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Ashort wrote:It's like you are trying to drive a nail with a screwdriver.I guess I should just get a cheap one and give it a try. |
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Febs wrote: I guess I should just get a cheap one and give it a try.But then you'd have to actually go outside. |
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Ray Pinpillage wrote: But then you'd have to actually go outside.Yeah, but I could do that in the park and starting to have a feel for it. Not the very same thing as the real one, I know, but still. In the while I got this e-book. amazon.com/The-Book-Bivvy-R… Hope to learn something from it. |
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So, I'll go for a rab tarp + quantum bivy solution. Thanks all for the inputs. |
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Peg it down all the way around and use a trekking pole in the center or a little offset. |
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Are you sure that with the need to peg the tarp nice and tight for treeless alpine camping, you're not going to end up with a sleeping system that is heavier, has a larger footprint and is harder to set up than your tent? |
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jktinst wrote: However, if you did set up the tent for maximum venting and still got all that frost, then I'm pretty sure that those same damp+cold conditions would also have produced frost and/or condensation inside a bivy, except that in that case, it would have been in direct contact with your sleeping bag instead of being away from it on the fly.I don't think so. Some humidity comes from perspiration, but most of it comes from the sleeper's breath. I would not breath *into* the bivy bag. The siltarp 2 weights 378 g / 13 oz unpacked (and I would stuff it unpacked) and the breathable bivy it's about 200 more grams - that's a weight that is hard to beat. For what matters the comfort/discomfort, I'll let ya know. Yeah: I'M GONNA DIE |
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You might want to check out Borah gear for the silnylon tarp. They have some simple designs that I think would benefit a Bivy very well. |
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Thank you. |