Hi AA1PR, thanks for the additional info!
Does that include help/ideas on the HHSS, or have you totally given up on that? Because just like you will never be warm at minus 12 in high winds with a similar weight ( ~ 21 oz ) full length long down UQ by itself( not a chance!), you will not make it in the basic SS at those temps, as you have already well proved. It ( or that down UQ ) must be well augmented for these temps way beyond their ratings.
It is great to hear you are planning on trying some other options, I can't argue against that, not with all the gear I have tried and still have!
However, until you get that other gear ( gonna be way over $99 ), you might experiment with various tricks with your SS, if you have not burned it already!
First, let me repeat the question from the other post: "And of course ( but have to ask): you did use the space blanket didn't you? ". Just making sure, because
you don't stand a chance in the basic SS without the space blanket.
Next thought: Do you have a larger tarp? I'm asking because you mentioned the 25+MPH wind. Now I realize the HH Overcover is not a tight seal- helps prevent condensation- but I have still found it blocks a noticeable amount of wind, and holds in some heat. It really seems to me way better than nothing, but may be not.
But most of all, as you were using that tiny HH tarp, are you aware of how much benefit you got from that Sil-nylon (same as tarp material) under cover? Here is my guess: if you had been using a 30*F rated ( comparable to the HHSS rating) down UQ by itself, and the wind was getting past the small HH tarp as it apparently was, you might have been way worse off than just bad cold- if you could not escape inside any way. That wind would have sliced through the usual UL down quilt shell like a knife through butter and probably sucked nearly all warmed up air right out. One way you could tell this is to just pull that HH UC to the side in a windy 10F and see how much worse it can get.
Next thought is: have you got a way to be adequately warm on top with out using both bags? Say with lots of warm clothing inside one of those bags? Or do you just have a spare even summer bag, and/or thick lofty clothing you are not going to sleep in? If so, try this: take one of those bags and put it down into the under cover, underneath the HH pad and space blanket on top of it all, covering everything completely. That should buy you another 25-50 degrees of protection on the bottom. That might make all the difference in the world. Or put a pad in the UC ( I know, not usually recommended by HH) and make sure to put a puffy down bag or clothing on top of that. One guy- kwpapke - has been warm at minus 27 with such a technique, hanging side by side with the infamous Shug as a witness!
http://www.hammockforums.net/forum/s...ead.php?t=6740
I don't know if that will make you toasty at minus 12 in high winds, but I can almost guarantee you will be
one heck of a lot warmer than you were!
Just trying to give you some ideas to get you through until you can get something else, assuming you have not already given it away or sold it. Good luck!
P.S.
What are those MSS bags made of, synthetic or down? If synthetic, you will still get some good back warmth by laying
on them inside the hammock. But you won't have near as much warmth on the bottom- after your weight compresses the insulation- as you will on top or if you were on a pad on the ground. And, if down, the warmth will be close to zero at the point of greatest compression. However, if you put one of those bags under the HH pad, you will get almost all the warmth of the bottom layer AND the top layer added to the warmth of the HH pad. Assuming you have enough clothing to be warm enough on top with just one bag- the warmest bag if they are different.
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