Another question(s) just occurred to me:
1) The shell must be down proof to prevent down escaping, and the baffles are used to keep the down in place; why aren't the baffles made of down-proof material? From the numbers I've seen, mosquito netting isn't that much lighter than thin fabric.
2) The interior surface must contact the hammock floor as much as possible, as tightly as possible for best insulation efficiency. Has anyone done a quilt with an
elastic inside surface fabric? With a bit of stretch, a lot of material at the ends of the quilt could be eliminated without the worry of ripping seams when you load down the hammock.
Thanks a bunch for the calculator link. It looks like 15oz should be
plenty to properly insulate the backside of a human being
. The hammock I'm planning to insulate is a bit...
unorthdox in its shape and layout, so the thickness and down density used in the calcs is what I'm after. I'll figure out how to truss up the insulation and attach it once I'm further along on the hammock construction. For now, I can start building a rough bill of materials for the project and get $aving.
First step accomplished, and already +100$ in the hole for down costs
. Aside from cost, is there any benefit to doing a "hybrid" quilt with a layer of synthetic on the inside face of the hammock as a way to offset some down volume?
Hey, that's what I do
. Heck, my hammock design is a very narrow, deep bridge with arm holes cut at the shoulders, and two "stirrup" armrests that eliminate shoulder sqeeze. The concept worked great as a prototype, and version 2.0 will have seperate suspended footwells and Hennessey style velcro closure at the "groin." I'm an engineer, but I have a soft spot for unnecessarily complicated (but unique) designs
TCB
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