Waterproof bags

nm...@cam.ac.uk

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Apr 5, 2013, 3:10:02 PM4/5/13

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Well, I finally got pissed off, and have bought a Berghaus Vulcan,
which I will have to adapt somewhat. I was hoping to reduce weight,
not increase it, but ....

However, as part of this I want some waterproof bags. Currently,
I use multiple pedal bin liners, but am afraid that I need a bit
more than that. I do NOT want a complete rucksac liner, and would
prefer ones that can let air out when compressed. And, naturally,
I don't want them heavier than necessary. Has anyone got any
experience of these, and warnings of what to avoid?

Ones that look plausible are Ortlieb, Exped and Sea to Summit.
I don't like the look of Pod, and want to avoid bulker shippers'
products with unknown properties.

Regards,
Nick Maclaren.

Graham C

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Apr 5, 2013, 5:58:43 PM4/5/13

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I have three assorted Exped bags and have given a few others as Xmas
presents to like-minded friends in the past. No complaints.

Graham

robert

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Apr 5, 2013, 6:11:36 PM4/5/13

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Rohan sell some with a one-way valve to let excess air out.
However I've found that when used inside a rucksack there is no need to
fully seal a drybag unless you are going to drop it in water !

nm...@cam.ac.uk

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Apr 5, 2013, 6:51:02 PM4/5/13

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In article <as90gk...@mid.individual.net>,

robert <rob...@invalid.invalid> wrote:
>On 05/04/2013 22:58, Graham C wrote:
>>
>> I have three assorted Exped bags and have given a few others as Xmas
>> presents to like-minded friends in the past. No complaints.

Thanks.

>Rohan sell some with a one-way valve to let excess air out.
>However I've found that when used inside a rucksack there is no need to
>fully seal a drybag unless you are going to drop it in water !

Thanks. But my problem is when there is 6 days of continual
rain - there is just no way of preventing water getting inside
the rucksac, and even small amounts of it accumulate.

Regards,
Nick Maclaren.

RJH

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Apr 6, 2013, 7:36:57 AM4/6/13

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On 05/04/2013 20:10, nm...@cam.ac.uk wrote:
> Well, I finally got pissed off, and have bought a Berghaus Vulcan,
> which I will have to adapt somewhat. I was hoping to reduce weight,
> not increase it, but ....
>

Does the Vulcan offer a degree of waterproofing? IME rucksacks seem to
be made of the most porous material known - odd to me since, seams
aside, I'd have thought it'd be quite easy and a nice marketing extra.

Rob

nm...@cam.ac.uk

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Apr 6, 2013, 8:37:39 AM4/6/13

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In article <wradnXYytPpElf3M...@bt.com>,

Yes, sort-of, and it's not quite like that. While they COULD seal
the seams and use waterproof material, the former are prone to
failure due to stress (which is a major issue for rucksacs) and
the latter would introduce other problems - like an appalling
stench and mould growth in storage! In my experience, the more
heavyweight rucksacs keep the worst of the water out, and really
leak only near seams and entrances. Of course, in the Highlands,
you need at least IPx4.

Regards,
Nick Maclaren.

Craig Wallace

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Apr 6, 2013, 9:29:49 PM4/6/13

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On 2013-04-05 20:10, nm...@cam.ac.uk wrote:
> However, as part of this I want some waterproof bags. Currently,
> I use multiple pedal bin liners, but am afraid that I need a bit
> more than that. I do NOT want a complete rucksac liner, and would
> prefer ones that can let air out when compressed. And, naturally,
> I don't want them heavier than necessary. Has anyone got any
> experience of these, and warnings of what to avoid?
>
> Ones that look plausible are Ortlieb, Exped and Sea to Summit.
> I don't like the look of Pod, and want to avoid bulker shippers'
> products with unknown properties.

Also worth a look at Alpkit, they have a few types of styles of
waterproof bags. They're fairly cheap, and work fine in my experience.
I've got one of their Gourdon rucksacks, its essentially just a drybag
with straps. Its simple and works well. Though it lacks any pockets,
which may make it tricky to keep things organised.

Craig

Theo

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Apr 6, 2013, 10:02:20 AM4/6/13

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<nm...@cam.ac.uk> schreef in bericht
news:kjn7ia$nno$1...@needham.csi.cam.ac.uk...

I use an old TNF Lodestar rucksac and since it started leaking I use drysacs
inside. Buy different sizes : 2 litres - 10 litres - 20 litres, according to
the items you're likely to bring with you on multiday trips. Different
colours is good for remembering what you put where. Sea-to-summit and
similar systems are good.

Theo
www.theooutdoors.blogspot.com
www.theooutddors.nl

Peter Clinch

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Apr 8, 2013, 5:42:26 AM4/8/13

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Every now and then someone thinks the same and they market a range
of fully waterproof rucksacks... which subsequently disappear when
the Gotchas become apparent.

Those being, they make it more expensive, and just as they won't
let water in they won't let it out either. So when you put your
wet jacket and tent in in you'll be carrying that water around in a
pool at the bottom for the rest of the day, and to keep everything
else dry you'll then need the liner that you used to use anyway...

Back to Nick's question, we variously use Ortlieb, Exped and Alpkit
and Sea to Summit and are happy with them all. Alpkit are probably
the best value.

Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net p.j.c...@dundee.ac.uk http://www.dundee.ac.uk/~pjclinch/