Originally Posted by Strung out
great to see some experimentation in this area.
A major point I would like to make is that the guy used a -20F rated bag at a temp of +38F.
I would like to see this type of thing done where the bag is rated near the temp that it is tested at.
Originally Posted by BrianWillan
Well at -20F one isn't going to get rain for precipitation, it would be snow. Even if he used the +40F bag, the point of the experiment was to test the claim of Wiggys bags being able to keep you warm even if it was soaked. Clearly that is the case.
I was thinking the exact same thing. Using a minus 20 bag at +38 when he got in the bag. And maybe by morning it was a bit cooler. Probably was as it had cleared a lot, but he did not say.
But still, I think even a minus 20 down bag soaked inside and out in the rain for 4 hours would have still proved to be a disaster, unless a DWR or WPB shell managed to keep the water out. IOW, not really soaked. Plus it would have never dried out during the night.
I think if he had used say a +20bag, he would not have been proclaiming warmth so quick, instead after a while he would have been just OK and safe, at least until the bag and his boxers mostly dried out. Then he would have been toasty.
On that NOLS course so many years ago, the instructors referred to the "clothes drier effect" of the synthetic bags we used. IOW, it was routine to just go to sleep in wet clothes or even in a wet or damp bag, with the full expectation that after a few hours every thing would be dry. This was day after day for 30 days straight, though the weather was often good. But lots of sweat was routine. It was just more or less assumed that no matter how we tried, we would often be wet from the days activities.
OK, it's been a few weeks since I posted this picture so time to do so again!
A typical 24*F June 27 Morning after, just outside the tarp trying to catch some rays:
That is a ~ 35 year old me on the right(63 now), and my old bud Mike, one of my ~ 20 year old tarp mates on the left. Look at all of that Old school wool he is wearing! This was after going to bed quite wet the night before. Taking the picture is my bud Jim from Chicago, the one who on the same night had the snow loaded tree limb bust through his tarp. Thankfully stopping inches from his face, only dumping a big load of snow on him, and not worse. After a period of shocked silence from all tarp mates, Jim was finally heard to say: "Well, live and learn", which caused much laughter from the tarpmates. I'm not sure exactly what he learned!