In October I hiked the John Muir Trail in California. I used a Gossamer Gear The One for shelter. A single skin tarptent it weighs less than half of the Hilleberg Enan, which is classic double wall very stable mountain tent. The One, with excellent ventilation, usually is not very condensation prone. But temperatures around, and sometimes below, freezing made it drip on my face some mornings as well.
So I decided to construct the ideal shelter for forests, where there is less need for storm-worthy tents. And also for temperatures were condensation is very, very difficult to avoid. A lot more on the background for this tent you will find in this blog post.
|Gossamer Gear The One with pack and bear canister on the JMT.|
By Jörgen Johansson
Here is a pictorial of the construction phase:
|For all synthetics, and I do not use other materials for my sewing, I use a soldering iron and a steel ruler for cutting, on top of my stainless steel kitchen sink.|
|Cuben can be sewn, but when you want to connect Cuben to Cuben it is usually better to use a special tape.|
|I wanted a bath-tub floor for my innertent, so I used tape in the corners like this.|
|Then I cut the extra material in the corners away.|
|Time to start cutting the ripstop nylon. Same ruler and same soldering iron.|
|When all the cutting is done, all that remains is to insert the zippers and sew the pieces together. It takes a while.|
|In case you are wondering about the rain fly, I already had that. It is a Cuben tarp I made a couple of years ago. I weighs 200 grams including some pretty long guy-lines.|
|The two zippers in an L formation creates the entrance. I often cook in the tent and only opening the horisontal zip allows me to do this even in bug infested areas without getting terrybly invaded.|
For warmer weather I have an innertent made for my MLD Trailstar that is solid ripstop about 0,5 meters up from the ground (for wind protection while sleeping). The upper portion of the innertent is mesh, which makes for better ventilation and view.
So, in cool weather the windproof ripstop will keep the wind and outside moisture out. It will let moisture from the inside out. If there still is condensation inside the inner tent (and there will be on occasion) the vertical walls at head and foot and the high ceiling will keep this moisture further away from my face. Less chances of it draping over me or dripping. More important, the chances of keeping my sleep system dry are better in this rather spacious inner tent.
The above is, so far, theory based on my experience. It will be nice to see if it works in the real world. I can already see that I made the inner tent a bit too high and also, was not able to fit the different pieces of fabric together in a way that kept the walls from sagging. So let us be modest and call this a prototype.