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  1. #1
    MDSH's Avatar
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    Single Line Success

    Thanks to I.M. Knotlost my variation of the single line system is complete with the sliding toggle, which does the trick, eliminating wasteful doubling back. See the excellent toggle idea here: http://www.hammockforums.net/forum/s...ad.php?t=67295

    My system uses 1/8" Amsteel throughout. Hang angle is not critical so strap height can be a consistent 6'-8" up the tree. The foot end uses a fixed loop attached to the hammock with a carabiner:


    The suspension runs to the tree strap and becomes the tarp ridge line over to the other tree:


    Then down to the head end of the hammock using the sliding toggle for adjustment:


    I used 3" of a broom handle painted brightly instead of heavy deer antler. As a true SLS this line can span my goal of 32 feet. I could not be happier with this outcome. The sliding toggle would be easier to adjust in the cold, I'd think. Hanging from this is solid, though one should be careful that the toggle does not pull through the carabiner. The entire system fits in a tyvek envelope:


    It could be lighter with soft shackles, right, but carabiners are so easy to clip! It packs down smaller than my GT UL:

    .
    Last edited by MDSH; 02-12-2013 at 19:09.
    Mike

    But Jesus often withdrew to lonely places and prayed. (Luke 5:16 NIV)

    He said to them, “But now let the one who has a moneybag take it, and likewise a knapsack. And let the one who has no sword sell his cloak and buy one." (Luke 22:36 ESV)

    While people are saying, “There is peace and security,” then sudden destruction will come upon them as labor pains come upon a pregnant woman, and they will not escape. (1 Thessalonians 5:3 ESV)

  2. #2

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    learning something new each day.

  3. #3
    MAD777's Avatar
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    This certainly makes adjusting your SLS easier and gives you total range of adjustment.

    However, I caution everyone that hang angles are always important. Yes the 1/8" amsteel will take a log of load, but that load goes to the trees we hang from. Remember, elephants in Africa get their food by pushing trees over with their trunk to eat the foliage. Just sayin'
    Mike
    "Life is a Project!"

  4. #4
    MDSH's Avatar
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    Quote Originally Posted by MAD777 View Post
    This certainly makes adjusting your SLS easier and gives you total range of adjustment.

    However, I caution everyone that hang angles are always important. Yes the 1/8" amsteel will take a log of load, but that load goes to the trees we hang from. Remember, elephants in Africa get their food by pushing trees over with their trunk to eat the foliage. Just sayin'
    I appreciate your caution, Mike, and have been thinking about a better tree strap system.

    My younger son is a really big guy and I watched two pine trees bend in on his hammock once, putting him on the ground.

    When I quit laughing ...

    Though I doubt the trees were amused ...

    We got him moved to pillars commensurate with his heft.

    In the meantime, given trees that can hold, it seems to me that the best straps would distribute the load most widely, which means all the way around the circumference of the tree rather on the back side only.

    There's a way to do that that also allows for differing diameters. It puts as much pressure on the front of the tree toward the hammock as there might be on the back side away from it.

    Would that solve the problem or does the elephant-type toppling stress worry you more?

    .
    Last edited by MDSH; 02-11-2013 at 21:16.
    Mike

    But Jesus often withdrew to lonely places and prayed. (Luke 5:16 NIV)

    He said to them, “But now let the one who has a moneybag take it, and likewise a knapsack. And let the one who has no sword sell his cloak and buy one." (Luke 22:36 ESV)

    While people are saying, “There is peace and security,” then sudden destruction will come upon them as labor pains come upon a pregnant woman, and they will not escape. (1 Thessalonians 5:3 ESV)

  5. #5

    Join Date
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    Quote Originally Posted by MDSH View Post
    I appreciate your caution, Mike, and have been thinking about a better tree strap system.

    My younger son is a really big guy and I watched two pine trees bend in on his hammock once, putting him on the ground.

    When I quit laughing ...

    Though I doubt the trees were amused ...

    We got him moved to pillars commensurate with his heft.

    In the meantime, given trees that can hold, it seems to me that the best straps would distribute the load most widely, which means all the way around the circumference of the tree rather on the back side only.


    There's a way to do that that also allows for differing diameters. It puts as much pressure on the front of the tree toward the hammock as there might be on the back side away from it.

    Would that solve the problem or does the elephant-type toppling stress worry you more?

    .
    It doesn't make any difference what kind of straps are used. All of the force is vectored directly in the direction of the hammock, trying to pull the tree down.

  6. #6
    Senior Member ibgary's Avatar
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    This sounds great. My hammock has an Srl, which keeps my angle constant. I think ill give this a try. Can you give us a video? Thanks

  7. #7
    MDSH's Avatar
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    Quote Originally Posted by Bonepile View Post
    It doesn't make any difference what kind of straps are used. All of the force is vectored directly in the direction of the hammock, trying to pull the tree down.
    Okay, pile, the toppled by an elephant problem:

    When one considers the forces of wind, rain, ice, and snow upon the canopy of a tree I imagine a hammock at any angle would be negligible by comparison.

    My son in the account above had chosen trees only a few inches in diameter.

    The bigger problem is probably the forces exerted through the bark upon the cambian layer.

    So, I will work on my better tree strap.

    .
    Mike

    But Jesus often withdrew to lonely places and prayed. (Luke 5:16 NIV)

    He said to them, “But now let the one who has a moneybag take it, and likewise a knapsack. And let the one who has no sword sell his cloak and buy one." (Luke 22:36 ESV)

    While people are saying, “There is peace and security,” then sudden destruction will come upon them as labor pains come upon a pregnant woman, and they will not escape. (1 Thessalonians 5:3 ESV)

  8. #8
    Harstad's Avatar
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    http://theultimatehang.com/hammock-hang-calculator.html


    Try to put in your respective numbers in the calculator, and you'll get the idea of the forces involved.

    If the trees are strong enough, then no worries =)


    Harstad
    If I die, my biggest fear is that my wife will sell my gear for what I told her I paid for it.

    I am learning from my mistakes, so I can make better and bigger mistakes.

  9. #9
    MDSH's Avatar
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    Quote Originally Posted by ibgary View Post
    This sounds great. My hammock has an Srl, which keeps my angle constant. I think ill give this a try. Can you give us a video? Thanks
    Thanks, gary. The SRL needs to be as beefy as the rest of the system because the force of a shallower hang angle runs right through it. Everything needs to be stronger because of the shallow angles employed. My tree huggers, for instance, are the heavy duty ones from Strapworks.

    As shown this is not a true SLS such as headchange4u, bearchaser, and olddog use -- but I can go to one like theirs easily by tying alpine loops in the line for hanging the hammock. Olddog has burried loops in his and I'm wondering if prusiks would work.

    .
    Mike

    But Jesus often withdrew to lonely places and prayed. (Luke 5:16 NIV)

    He said to them, “But now let the one who has a moneybag take it, and likewise a knapsack. And let the one who has no sword sell his cloak and buy one." (Luke 22:36 ESV)

    While people are saying, “There is peace and security,” then sudden destruction will come upon them as labor pains come upon a pregnant woman, and they will not escape. (1 Thessalonians 5:3 ESV)

  10. #10
    MDSH's Avatar
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    Thanks to Allen and Tendertoe I have improved my already simple SLS with a pinned slip knot instead of using the wooden toggle with a hole in it. It holds just fine. The pin is a cheap aluminum stake cut down with the hook closed and painted brightly.

    Mike

    But Jesus often withdrew to lonely places and prayed. (Luke 5:16 NIV)

    He said to them, “But now let the one who has a moneybag take it, and likewise a knapsack. And let the one who has no sword sell his cloak and buy one." (Luke 22:36 ESV)

    While people are saying, “There is peace and security,” then sudden destruction will come upon them as labor pains come upon a pregnant woman, and they will not escape. (1 Thessalonians 5:3 ESV)

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