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  1. #1
    Senior Member headchange4u's Avatar
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    Question Hennessy-style Asymmetrical Hammock Pattern?

    I have really wanting to mod my HH by removing the bug net or adding a zipper, basically turning it into a top loading hammock. I have several mods in mind, but I really don't want to start cutting up a $100+ piece of gear.

    I figure I have 2 options: Buy another HH just to mod or find a pattern and build what I want from scratch. I really don't want to shell out the money for another HH just to cut up and possible destroy. I would really like to start from the ground up, adding only the features I want, and since I have a lot of fabric I could use, it would be much cheaper.

    Does anyone know where I could find the basic hammock body pattern that I could work with? I know there are some pictures in the Patent database, but I can't seem to ever view the pictures no matter what computer or browser I use.

  2. #2
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    I would start here. Not that I have thought about it or anything, but nothing like going straight to the source.

    The pics are not showing up on my PC, it I have seen them there before. They may be in .pdf form.
    Last edited by Coffee; 02-14-2007 at 14:02.
    Is that too much to ask? Girls with frikkin' lasers on their heads?
    The hanger formly known as "hammock engineer".

  3. #3
    Senior Member blackbishop351's Avatar
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    I think if I were going to do this mod, here's how I'd go about it:

    Sew the zipper into the hammock, with both halves together. That way you KNOW everything will be lined up when you're done. It'll be kind of a pain because you'll have to get the machine in through the slit, but I think it's doable. T-Back said he did his that way.

    Once it's sewn in, THEN open the zipper a little at a time and cut the netting under the center of the teeth. This should leave some material on each side.

    Roll the extra material over and sew a couple more lines. I think I'd add a flat strip of grosgrain on top too, for looks and strength.

    I don't think it'd be THAT hard of a project. I may get some zipper soon and try it, especially since I don't use my HH much anymore. I think if the mod were successful, I might be a lot more tempted to hang it than I am now.
    "Physics is the only true science. All else is stamp collecting." - J. J. Thompson

  4. #4
    Senior Member headchange4u's Avatar
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    HE,

    I have seen that patent, but is for the non-asym hammock.The patents are available in .pdf you have to pay for them. I bought the one for the asymmetrical hammock but it doesn't really give any dimensions that I can work with that I have noticed. I have only skimmed through the document.

    BB,

    I know I could do the mods pretty easily, but I really not wanting to mess with my HH like that. I would rather try and buy one that has seen a little abuse and may not be in the best shape if I wanted to mod a HH.

    Since I am wanting a top loading hammock the slit in the HH would be eliminated.

    I really like the shape and comfort of my HH, but the more I use my zHammock the more I realize that the slit entry on the HH, while innovative, is becoming a little bit of a hassle.

  5. #5
    Senior Member Redtail's Avatar
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    I couldn't get the pictures to show up except using I.E. and hitting Refresh every page. I didn't find a picture showing the shape they started with though.

    I've tried pulling opposite corners of each end out some before whipping (gathering each end so one corner is pulled out more than the other). This gave me more room along that diagonal but it doesn't seem as pronounced as on my Hennessy. They start with a parallelogram shape vs. a rectangle shape as H.E. illustrates here:
    http://www.hammockforums.net/forum/showthread.php?t=156

    The dimensions of Hennessy's parallelograms are on the Comparison Chart page (second chart)
    http://www.hennessyhammock.com/comparisonchart.htm

  6. #6
    Senior Member headchange4u's Avatar
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    Quote Originally Posted by Redtail View Post
    I've tried pulling opposite corners of each end out some before whipping (gathering each end so one corner is pulled out more than the other). This gave me more room along that diagonal but it doesn't seem as pronounced as on my Hennessy. They start with a parallelogram shape vs. a rectangle shape as H.E. illustrates here:
    http://www.hammockforums.net/forum/showthread.php?t=156

    The dimensions of Hennessy's parallelograms are on the Comparison Chart page (second chart)
    http://www.hennessyhammock.com/comparisonchart.htm
    I have tried HE whipping technique and it does produce a more asymmetrical style hammock that the standard Speer-type, but you are correct when you say that it still doesn't give that HH "feel". My zHammock with side tieouts gives me the most asym shape of any other method I have tried.

    I am thinking, and correct me if I'm wrong, that starting with a HH shape will allow me save a little weight in the area of the hammock body. With a Speer-type hammock you start with a rectangular piece of fabric and then lie in it asymmetrically. In my mind that rectangular shape means extra fabric in the hammock body that may not be needed. If I start with a HH style asym pattern and size it to fit me it would eliminate that "extra fabric" and allow me to add things like zippers and stuff without worrying so much about the weight I am adding.

    I could be totally wrong in thinking this and any weight savings might be very small, but I got it in my head to try and make a DIY HH-style hammock and now the idea is stuck in there .

  7. #7
    Senior Member blackbishop351's Avatar
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    Go for it! Definitely post pix too!

    I don't know that you're actually using the material better somehow (with respect to weight savings) in an asym. I think there may be more unused body material in my ULB than in my Speer-type.
    "Physics is the only true science. All else is stamp collecting." - J. J. Thompson

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    Hennessy Pattern

    Guys,

    If you spread any of your Hennessy Hammocks out on the ground and measure the material you will find that the hammock bottom itself is actually a simple rectangle. That's why our quilts work. We're matching a rectangular quilt to a rectangular hammock bottom, gathering the ends, and connecting them at the a-sym tie-out points. What makes the hammock a-sym is the cut of the no-see-um netting and the placement of the two a-sym tie-outs. It's that simple.

  9. #9
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    True

    Quote Originally Posted by Smee View Post
    Guys,

    If you spread any of your Hennessy Hammocks out on the ground and measure the material you will find that the hammock bottom itself is actually a simple rectangle. That's why our quilts work. We're matching a rectangular quilt to a rectangular hammock bottom, gathering the ends, and connecting them at the a-sym tie-out points. What makes the hammock a-sym is the cut of the no-see-um netting and the placement of the two a-sym tie-outs. It's that simple.
    I have definitely voided the warranty on my HH Explorer. I took it apart at both ends and ripped the stiching down one side, seperating the bug netting from the hammock body. The fabric is a rectangle. The ends are pretty much bunched up straight across. The unique shape comes from 3 things as far as I can tell. The main factor is the bug netting. It is what is cut into the asym parrallelogram shape. It forces the edges of the hamock to fold at the tie outs. The second thing is mentioned in another post in this thread. The way the corners are sewn together and overlapped with the bug netting at the ends before the ends are bunched. The third technique used to make the unique hang is the excellent folding/bunching method. It really gives a nice flat center portion and helps with getting rid of shoulder squeeze I think.

    If you are going to remove the netting from a HH, leave the reinforced triangles at the tie out points. This might help it keep some of its shape.

    Now lets see if I can put it back together. If not, I guess I will be forced to make my own HH clone. (which I am planning on trying anyway)

  10. #10
    Senior Member headchange4u's Avatar
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    Quote Originally Posted by wilsonbmw View Post
    I have definitely voided the warranty on my HH Explorer. I took it apart at both ends and ripped the stiching down one side, seperating the bug netting from the hammock body. The fabric is a rectangle. The ends are pretty much bunched up straight across. The unique shape comes from 3 things as far as I can tell. The main factor is the bug netting. It is what is cut into the asym parrallelogram shape. It forces the edges of the hamock to fold at the tie outs. The second thing is mentioned in another post in this thread. The way the corners are sewn together and overlapped with the bug netting at the ends before the ends are bunched. The third technique used to make the unique hang is the excellent folding/bunching method. It really gives a nice flat center portion and helps with getting rid of shoulder squeeze I think.

    If you are going to remove the netting from a HH, leave the reinforced triangles at the tie out points. This might help it keep some of its shape.

    Now lets see if I can put it back together. If not, I guess I will be forced to make my own HH clone. (which I am planning on trying anyway)
    It would be absolutely wonderful if you could take some detailed pics and measurements before you put it back together. You would save me a world of headache. You can email me the pics if you want. Just send me a PM and I will give you and email

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