Nothing too scientific here, just some observations.
The other day I was seam sealing the Scarp and the Sublite Tyvek when I noticed a substantial difference in comfort level inside the two ( I do the inside as well…)
This was in the sun around 28c (82f) in the shade.
It then started to rain on and off, the same yesterday. So I took some temperature measurements. The brief version is that fully enclosed ( Scarp with the inner and outer zipped up and Sublite with both mesh and Tyvek door done up) the Scarp was hotter inside than in the sun, 1-2c, the Sublite registered the same temperature as outside in the shade. At one point the difference was 9c ( 86f in the Sublite, 102f in the Scarp) . Opening the Scarp up (both inner and fly) dropped the inside temp slightly lower than in the sun, there was a little bit of a breeze at that point.
Condensation
After three nights, the result is the same. The Scarp has the top 2/3s of the inner wet but not dripping ( all sealed up for the test) with or without me inside, the Sublite remains dry, apart from a slight damp feeling near the apex after a 10 minute or so heavy burst of rain. Keep in mind that it was very humid with 19c (66f) as the lowest temperature at around 5 AM two morning in a row. So there is a lot of ground evaporation from the large vestibules in the Scarp. This morning just after 4AM I opened the Scarp up and immediately the dampness dissipated and was nice and cool inside my silk inner.
I had the Scarp inner out in the rain by it self, not water proof but fairly water resistant.
Franco
BTW, so far 1:50 sec is my best time for setting up the Scarp with 6 pegs.
