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  1. #1
    Senior Member uncle_ray_ray's Avatar
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    Asym Tarp Design Ii

    Not being totally satisfied with my initial asym tarp design
    http://www.hammockforums.net/forum/p...ictureid=12914
    due to what I felt was excessive exposure. I came across the "Ogee Trap" which compromises a bit of extra weight (2 ozs) by adding "partial doors". My design was headed in this direction also. I customized the initial concept and made a model, and it appears to be a good compromising tarp for me. My dimensions are made for a WBBB hammock, giving me about an extra 16" of space on either end. I'm hoping this design would protect me a bit better in a serious rainstorm or high gusts of wind.
    http://www.hammockforums.net/forum/a...p?albumid=1783

    [IMG][/IMG]

    [IMG][/IMG]

  2. #2
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    Interesting design

    It may be too large, but it seems to me this type design would be a good candidate for a poncho/tarp combination. Food for thought.

    My 2 cents.

    Happy Trails
    " . . . there's no easy trail to Cache Lake, for it is protected by distance, mile after forgotten mile of woods and water, and it is still clean and clear and safe from civilization." John J Rowlands from Cache Lake Country

  3. #3
    Senior Member uncle_ray_ray's Avatar
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    Quote Originally Posted by tpkanu View Post
    It may be too large, but it seems to me this type design would be a good candidate for a poncho/tarp combination. Food for thought.

    My 2 cents.

    Happy Trails
    Appreciate your input. What size and modifications would you recommend? Its still in the design stages, so its a perfect time for other thoughts.. I own a Superfly, so I already have a large tarp, and would like to make it as light as possible yet not having to worry about getting wet because its too small. With materials and size, this tarp is weighing about 13 ozs.

  4. #4
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    The reason I thought this might be workable as a poncho/tarp is that your main width is the width of the fabric (60") which is perfect for a generous poncho. Your max width is right where shoulders would be on a poncho.

    Check out this poncho design for dimensions:

    http://royrobinson.homestead.com/PonchoPlans.html

    However, I do not have the same kind of hammock you have and don't know what kind of length coverage you need. If the tarp dragged the ground during poncho use, you could always use plastic snaps to secure the overhang.

    I was looking for multiuse, while you are looking for max coverage with minimum width. These goals may or may not be compatible.

    Happy Trails.

    Why don't you make a sample tarp out of Gorilla tape and plastic painters poly to see if this tarp will work?
    " . . . there's no easy trail to Cache Lake, for it is protected by distance, mile after forgotten mile of woods and water, and it is still clean and clear and safe from civilization." John J Rowlands from Cache Lake Country

  5. #5
    Senior Member
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    Move the small triangles

    After studying your design, I see a possible change that may be beneficial.

    When I hammock and lay on a diagonal, my head is on the upper side of the ridgeline (as per your drawing) and my feet are on the lower side of the ridgeline.

    Therefore, it would seem to make sense to take the upper small triangle "ogee" and move it over to the left edge of the upper tarp. On the bottom, take the lower small triangle "ogee" and move it to the right edge of the lower tarp. (If you sleep diagonally "head right" of ridgeline, merely turn the tarp over to get the max coverage where needed.) I don't know how the tieouts would work with this shape, but in theory it sounds workable.

    I hope this makes sense.

    Happy Trails.
    " . . . there's no easy trail to Cache Lake, for it is protected by distance, mile after forgotten mile of woods and water, and it is still clean and clear and safe from civilization." John J Rowlands from Cache Lake Country

  6. #6
    Senior Member
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    Assm tarp link

    Found this link you may want to look at:

    http://www.mydiygear.com/pages/proje...m/tutorial.php

    Happy Trails
    " . . . there's no easy trail to Cache Lake, for it is protected by distance, mile after forgotten mile of woods and water, and it is still clean and clear and safe from civilization." John J Rowlands from Cache Lake Country

  7. #7
    Senior Member uncle_ray_ray's Avatar
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    Quote Originally Posted by tpkanu View Post
    Found this link you may want to look at:

    http://www.mydiygear.com/pages/proje...m/tutorial.php

    Happy Trails
    I like that asym design a lot! I'm going to continue to experiment with the idea of seeing if I can add some "mini door flaps" to it though. I'll be playing with some paper patterns to scale and see what it looks like in 3D . It's definetly more functional for me. Thanks a lot! I'll keep you posted.

  8. #8
    Prefers life at 12 MPH. FLRider's Avatar
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    Another idea worth considering is using a poncho, carried separate from the tarp, to use as an improv Grizz Beak in place of putting doors on the tarp. I've done that with the Hennessy Hex and my GI-surplus poncho in some horrendously blowing rain and stayed dry.

  9. #9
    Senior Member uncle_ray_ray's Avatar
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    Quote Originally Posted by FLRider View Post
    Another idea worth considering is using a poncho, carried separate from the tarp, to use as an improv Grizz Beak in place of putting doors on the tarp. I've done that with the Hennessy Hex and my GI-surplus poncho in some horrendously blowing rain and stayed dry.
    Thanks, that's a possible consideration. My objective is to have something that is as light as possible and not retrofitted. I carry a lightweight top and bottom rain suit (from some of my biking supplies for the rain)it's more versitile for me. I've never been much of a poncho person because of the terrible drip off the bottom, and non-ventillating properties; even though it can be used for a variety of different purposes.
    Then to attempt connecting my poncho to a floppy rainblown tarp,seems very cumbersome to me. If I could design a tarp that has a simple non-complicated rain and wind barrier attachment I'd be very content. Actually the fun part of this project is to strain my brain and comeup with an answer. I appreciate all ideas from others. Thanks a lot.

  10. #10
    Senior Member exup's Avatar
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    For a minimal coverage tarp, why not just do a 11' x 5' rectangle. It'll be simple to make, fabric comes 65" wide usually, and you'll still have the partial closing doors. I don't see the point of having that extra triangle of fabric on each side, do you need that coverage? Plus with the doors pitched it'll pull the side tarp inward and take up precious space unless pannel pulls are deployed. That means you're using a minimun of 8 stakes, seems like a lot for an asym tarp.

    Very cool idea though. I just think an 11'x5' will weight a good bit less and use less stakes.

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