So it arrived in the mail yesterday. I bought it second hand (though its near new) off gear swap, so it had guys prepared to the appx length recommended by SMD.
Pitches quite easily, I pitched it in about two minutes first run on the lawn, with just two peg replacements after I got it up. So pretty good, though I have a lot of experience pitching a Trailstar (which I no longer have) which is definitely a tricky pitch. Six sides is a LOT easier to visualise on the ground as you stake it out than five.
I really like it so far! As a shelter, I think it is plenty big enough for me inside (I'm ~175cm). Coverage is fine. Even hunkered down (all but the door guy/stake to the ground) there is enough room in there for me, just. Hunkered down it will give perfect protection through ~270 degrees, and pretty good protection on the beak side…thankfully the part with the least coverage is furthest from where you would be sleeping. It seems fine worn in the backyard, though I haven't had a chance to test it with a pack on for fit, nor rain, nor actual field conditions.
Compared to listed dimensions for shelters like MLD Solomid, Zpacks Solo Hexamids, even the Zpacks Pocket Tarp, the weight is pretty light for something made from 1.3 silnylon. Using conversion factors to .51oz or .75oz cuben, and taking into account about an ounce for the peripherals, the gatewood uses a lot less material overall. The dimensions of all these shelters alude to why, and I think the low pitch height and general flatness of the gatewood contribute a lot to a geometry that is sparing on fabric while still keeping a fair amount of floor area. The raised door beak also helps compared to say a MLD solomid. The lower overall height means less head clearance-for me I think there's enough (I can sit up and clear it, the process of getting up I might just skim it if I'm not careful. I wouldn't if I used one of the panel guy outs).
I have to hand it to Ron at SMD, he designed a really clever shelter, there's no doubt about it. His careful use of the stretch of silnylon is sensational…it pitches really tight, despite the back four sections of this six sided mid actually being ONE PIECE of silnylon with NO SEAMS. Only the front two door flaps are seperate, single panels. Really impressive design from Ron, I bet there were a few failed prototypes to get it right…
All this leads me to a few of conclusions at this stage.
1. I like it so far and its dimensions. I think they would work for me. If I was to MYOG, I would probably give the beak 2-5 inches more length, just because I could and I don't think I'd regret it…there are plenty of other ventilation options for non blustery conditions.
2. A cuben version would require 6 proper panels. Cuben doesn't stretch, the big rear panel would need caternary seams carefully measured out. So its not a perfect pattern for a cuben copy.
3. I'd have to do a lot of careful calculations to determine if a mid would save weight or not. A lot of geometry. A mid of the same dimensions as an MLD solomid clearly wouldn't (it weighs 10.5oz without a hood in place in .75oz cuben). For a mid to beat this, it would have to cut down on peak height to be about the same as the gatewood. I think the gatewood also works well and saves weight, in that it makes up width through the angular parts of the extra side corners. This is possibly more useful space than the four corners of a mid, and like a circle vs a square, the edge/area ratio is better the more sides you add.
4. I could save miniscule amounts of weight, by doing things like using lighter material for the pocket. For some reason this is of a heavier fabric than the main 30D silnylon, I'd guess at 70D and about 2oz, but I don't have any of that fabric on me to compare directly. This could be done with .34oz cuben without hassle I think, unless you weren't careful putting sharp things in it. More minscule weight from using kamsnaps instead of metal snaps.
5. Assuming 1 once for all the peripherals, and the other 10oz for fabric weight, a .74oz cuben version would weigh in at 0.74/1.3*10+1=6.69oz. So, about a 4.5oz weight saving.
6. Assuming the panels work out perfectly (they won't), its perhaps 8 sq yards of fabric by weight, so at least $200 of cuben fabric alone.
I definitely will think about MYOG a cuben version, but will give it some time, won't start for at least a season. I have other projects further up the pipeline that are more beneficial/already have the materials for (eg, a sub 10oz quilt project….).