tipsntails7
WKR
- Joined
- Jul 30, 2013
- Messages
- 3,428
Yes I can speak to that but tipsntails might bust my balls if I haven't tested every shelter on the planet in exactly the same conditions and I dont have a chemistry degree and I don't own 3 manufacturing plants .
Seriously though there are a few things at work here. First and most importantly, all silnylon sags she wet a little because while the fabrics supposedly don't let any water through (this is not always true), the way silnylon is manufactured does allow the nylon to absorb water and nylon 6,6 with expand and lengthen 2% while lesser nylons will up to 3.5%. To put that in perspective an 8 foot span will grow nearly 2 inches on nylon 6,6. Polyester doesn't really have that problem but there are tradeoffs. Second the way fabric is put together matters in that the ripstop grid and grain of the fabric does provide some structure and the fabric has quite a bit less stretch in the directions on the grid than it does on the bias stretch. What this translates to is seam placement and fabric directionality matters. Seek outside does a better job managing this using alternating directionality at the seams. Third, as already mention pitching is not always done as tight as possible or in the most ideal conditions.
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I didn't realize asking for real world use was busting balls...my apologies.
What you wrote is great, and informative, but it's not something a guy can't learn by just reading stat sheets.
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