Originally Posted by BillyBob58
Looks like some newer folks are getting pretty darn good results!
Well Dirtwheels, personally, I am also going to call this a great success. Because you did not use a space blanket ( almost essential for me ) and you got the expected ( if not using a SB ) condensation and the damp pad that results. But still, you were warm enough at 36F? Impressive, IMO! That speaks very highly of the insulative properties of that pad even when damp.
You ask if the condensation going into the bag if you use the space blanket. Well speaking for myself and several others ( like ImSoConfused at start of this post) - and saying up front that it has not worked this well for every one for reasons I don't understand - if you use the space blanket(SB), not only will it make the system a lot warmer, but you won't ( or at least I don't) get any condensation.
See, here's the Vapor Barrier (VB) THEORY: Your bods vapor traveled out from your body, went right through the totally breathable pad, hit the COLD outer layer of the UC, condensed as you might expect, and then got your pad wet. Once - but not always - when I did that, I woke up with the foot of my bag and pad soaked.
But if you use a vapor barrier/space blanket, you want it as close to your body as possible. That should keep it warm from your bodies heat. Vapor won't normally condense when it hits a warm surface, but only when it hits a surface which is below the dew point. Like your windshield on a cold day. If you warm your windshield up with a defroster, or the sun warms it up, the condensation pretty much goes away.
Also, you want as little insulation as possible between you and the VB/SB as possible. Because if you overheat and sweat, or the VB is cold and you get condensation, the moisture won't be able to escape and will be absorbed by the insulation.
In my years of using a space blanket immediately under the hammock with the HHSS or inside my Pea Pod, I have never had any significant condensation issues. Only in the HHSS if I did not use a space blanket. My worse case scenario in the HHSS was finding a few drops of moisture at the low point of the sb. But that's me, and several oothers report having no problems. But some folks have reported condensation issues even with the sb, so I guess it is one of those YMMV things.
Glad to see so many people having good luck with the HHSS!
I was not displeased with the SS performance, that said I am displeased with the SS volume, particularly the volume of the pad. Have you tried other pads? I purchased an 1/8" EVA foam to make an alternative pad from SS pad, thinking the volume would be less. And the the EVA foam may possibly be warmer per thickness (guessing).
Have you tried the UC & SP combo without the pad with a sleeping bag? I think that may be my next experiment. I am unlikely to get out often in the 30* range, and am looking at a lightweight small volume option. Guess I need quilts.