4.5 oz all net bug bivy (XL) – full length top zip entry
Sep 16, 2021 at 6:20 pm #3727538
The floor as well as front and rear triangles are made with .65 Questoutfitters noseeum. Green top material is RSBTR .50 noseeum. I wanted a full net bottom so I can have the option of using a WPB bivy. That way water won’t pool up like with a solid floor, however, I can still add a floor made with a host of waterproof materials if I’m not using the WPB bivy.
I’m 5′ 10″ tall so I made it to fit me. Ridgeline measures 5′ 10″ and base is 6′ 8″ long. Front width 32″ and rear is 28″. Front height 30″. I made the foot end with a slope to not only shave a little weight, but to also make it to where the front end doesn’t go so far back when I lower the front to get in the bivy (when paired with an A frame tarp). YKK #3 zipper spans almost the entire length of the ridgeline making for easy entry and exit.
There’s almost limitless options as to what I can do for a waterproof floor if needed. In the pic below I just placed a cut to fit .7 mil polycro (1.2 oz) and taped the corners to provide a hint of a bathtub floor, but I can also use a ZPacks solo bathtub floor to provide a lot more splash protection. Tyvek, silpoly, plastic and silnylon can also be utilized.Sep 16, 2021 at 6:51 pm #3727541dirtbagBPL Member
Awesome!!Sep 16, 2021 at 7:20 pm #3727543obx hikerBPL Member
Yessir this looks like a keeper thread. Monte you are really an example of the UL spirit. Always pushing the limits. Appreciate it.Sep 24, 2021 at 11:37 am #3728094toddBPL Member
@funnymoLocale: SE USA
Yet another great piece of work Monte! I love it.Sep 26, 2021 at 5:10 pm #3728209
Looks great, Monte! Did you ever try monolite instead of the 0.67? Maybe more durability and less snag with ground debris. Weight penalty probably about an oz.Sep 26, 2021 at 6:56 pm #3728211toddBPL Member
@funnymoLocale: SE USA
Good thinking Matt. But due the weave, Monolite will probably be less breathable.Sep 26, 2021 at 7:15 pm #3728212
From my experience making mesh packs from monolite, it seems it would be plenty breathable.Sep 27, 2021 at 4:21 am #3728215
Yea the Monolite looks good at 0.7 oz per sq yd, but my main concern would be whether or not it has enough holes per square inch to keep out noseeums or midges. Also the price is more than double Questoutfitters’ .65 ($6.80/yd vs $2.99/yd). The Monolite is no doubt tougher and as far as breathability goes that wouldn’t be a concern for ground fabric. You may be right though Matt, the Monolite could be the best choice. And no reason to get cheap I suppose because heck the RSBTR .50 is $6.75/yd.
I find the Questoutfitters .65 noseeum to be infinitely more durable and run resistant than RSBTR .67 and Dutchware .67. It actually looks like 0.9, but I’ve weighed it and it’s spot on. However the Questoutfitters’ is bulkier than RSBTR’s and Dutch’s so I only like it for ground fabric, end triangles or when high durability is needed.
I know most BPL’ers aren’t interested in my pushing the envelope creations. I can’t help it though because my hatred for weight just keeps getting worse. It’s not healthy really.
This latest bug bivy has more headroom and more overall space than other cottage bug bivys you see on the market and it’s lighter. I could make it with a 7D 4″ high bathtub floor instead and come in at around 5 oz.Sep 27, 2021 at 7:18 am #3728218
The 1.0 oz monolite is what I have experience with and it is definitely tight enough weave to keep out the smallest bugs. Didn’t know there’s 0.7 oz now. That should make it all the better for this niche application. Intrigued by your idea of using this bug bivy in conjunction with wpb bivy. The idea being to skip the tarp altogether? Back in 2015 when I attempted an FKT on the Florida Trail (quit about 1/3 of the way due to injury) I carried a tiny bivy-sized MYOG tent with similar idea: I put the 0.67 noseeum mesh panels on the outside and waterproof walls on the inside which stayed rolled up for ventilation weather-permitting. I could roll them down from inside if needed. What I learned after a passing shower, the mesh would stay wet making it difficult to stay dry when trying to “open up the windows” back again. It can be tough keeping comfortable and dry in such a small space. Hence I went the opposite way with my next bug bivy which is basically a 10.5 oz net tent made from 0.5 nanoseeum and 4000 pu silpoly floor (can fit dog/kid). However, I’m inspired to revisit a true minimalist one-person design, thanks!Sep 27, 2021 at 10:40 am #3728230
I like the net tent Matt. This is the 0.7 oz RSBTR Monolite I’m referring to. https://ripstopbytheroll.com/products/0-7-oz-monolite-ripstop-nylon-mesh Kyle also carries a 1.0 oz and a 1.5 oz Monolite.
I don’t want to skip a tarp altogether, rather I use either an SUL dual purpose half tarp (kilt) or a VERY light small tarp. I’ll post some pics tomorrow of my Montbell Breeeze Dry-Tec WPB Bivy paired with the bug bivy and either the 4.6 oz 7D tarp (56″ X 108″) or a large rain kilt/mini tarp pitched over the head and torso. The kilt/ mini tarp is more for drier climes or for when rain chances are lower, however it will keep me totally dry in a rain event and I don’t go crazy with rain pounding on my head/torso, The huge advantage of the bug bivy/WPB combo over a just WPB bivy with mesh on the head end (like the MLD FKT or Event Soul for example) is that if temps are warmer I don’t have to be inside of the bivy to have full bug protection.Sep 27, 2021 at 11:28 am #3728240Erik GBPL Member
@fox212Locale: Central Coast
Excellent piece, Monte. I really like the top entry configuration. Attention to detail is spot on and as usual, it pitches nice and tight. Love it!
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