Originally Posted by Arkwater
Got the stuff together to sew a bridge hammock but have a couple easy questions. What is the optimum cat cut for an 8 footer? & optimum spreader bar length? Thanks
The piece I'd cut for my next version (if it was 8' long) is illustrated in the attached diagram. It assumes a recessed pair of rings for the head spreader bar, like I'm doing for v0.2. It assumes that 1.5" of fabric are taken up by rolling onto the suspension webbing.
The key ideas are
(i) you want 36" finished at the narrowest point, so that when you're on your side both knees stay in the hammock.
(ii) You get 48" of fabric (finished) spread by 36" of spreader bar. This is the spread I'm using and it is noticably better than when I used 36" (or even 39") at the head corner rings.
For compression reasons you don't really want to have a spreader bar wider than 40"; 36" with the recessed rings works nicely, but this, along with 36" at the narrow part, implies a 6" cut. I did a 6" cut on the lower suspension lines of the grey prototype buried under piles of Bridge Hammock thread posts, works fine.
If I would fix the size of the suspension triangle, and assume that the angle of ascent of the suspension lines from the rings is 30 degrees, I could then shape the edges of the piece above the recessed spreader bar so that I'd get a flat floor there.
hitherto, wheretofore, and thereabouts,