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#126909 - 01/17/10 11:48 AM Wet T-Shirt Contest
DJ2 Offline
member

Registered: 01/06/02
Posts: 1348
Loc: Seattle, WA
I was working in the yard in the rain with temps around 40 F the other day and decided to do an experiment.

I wore the following garments (listed from skin out):
(1) polar fleece pullover
(2) cotton T shirt
(3) somewhat leaky rain jacket-coated-non breathable

After about two hours of fairly light work I went inside the house, removed the garments and inspected them. The polar fleece was dry to the touch. The T shirt was soaked and had approximately doubled its weight from 8 ounces to 16 ounces. The rain jacket was wet on the inside and outside.

I was comfortably warm while working due to the dryness of the polar fleece. I assume the cotton T shirt had kept it dry by absorbing the sweat coming from my body and the leaking from the rain.

This worked for a couple of hours. If I had stayed out longer I'm guessing the T shirt would have stopped its magic because it was pretty saturated. Switching to a dry T shirt, however, would have allowed me to go for another stint with warmth provided by the dry polar fleece.

So how can I use this to make me more comfortable while backpacking? I'm not sure. I don't carry any cotton clothing when backpacking. It's usually wet and cold when I'm hiking in the mountains of Washington and cotton is heavy and cold and agonizingly slow to dry when wet. The idea of carrying a a 1 lb wet T shirt around for a few days doesn't appeal to me and I'd probably add a lb of some other quicker drying clothing instead.

Can you think of any lightweight backpacking applications from this wet T-shirt experiment?

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#126924 - 01/17/10 06:36 PM Re: Wet T-Shirt Contest [Re: DJ2]
oldranger Offline
member

Registered: 02/23/07
Posts: 1735
Loc: California (southern)
Great thread title. I couldn't wait to click on it.

You give a graphic and convincing demonstration of how unsuitable cotton is in other than ideal conditions

I was out hiking in the rain for a bit last week - temps in the 50s and 60s. I wore a variety of synthetic materials, which I was able to keep reasonably dry by altering my clothing as circumstances changed. Whenever i stopped, I hung things out to dry - this didn't take long in a thirty knot wind.


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#126929 - 01/17/10 08:23 PM Re: Wet T-Shirt Contest [Re: DJ2]
Jimshaw Offline
member

Registered: 10/22/03
Posts: 3983
Loc: Bend, Oregon
Actually you give a demonstration of something unusable. I have for instance made the mistake of wearing cotton jockey shorts under wicking long underwear and the jockeys became soaking wet - a bad thing not a good thing. I was skiing so I simply pulled out my knife and removed the offending garment. Try instead wearing a wicking layer against your skin with the same polar fleece and see how it works. At times like this you unzip so the steam can get out, but you should be able to have a dry layer next to your skin, which is a good thing.
Jim
_________________________
These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.

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#126951 - 01/18/10 03:57 PM Re: Wet T-Shirt Contest [Re: oldranger]
kevonionia Offline
member

Registered: 04/17/06
Posts: 1322
Loc: Dallas, TX
old ranger:

From the forecast, sounds like you can do some serious (and unusual) rain-hiking/wet-weather gear testing in SoCal in the coming week.
_________________________
- kevon

(avatar: raptor, Lake Dillon)


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#126960 - 01/18/10 09:13 PM Re: Wet T-Shirt Contest [Re: kevonionia]
oldranger Offline
member

Registered: 02/23/07
Posts: 1735
Loc: California (southern)
Not this kid. I was out last week, and I'm going to sit inside for the rest of this week. It looks like an epic is brewing...

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