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  1. #1
    hppyfngy's Avatar
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    How much weight will 7/64 really hold?

    I've made a hammock for my large bro-in-law. It's a double layer Hancock ripstop I weighed as 1.8 oz/yd.

    He weighs in around 230# but I've seen him weigh 250+#.

    I know the specs, but don't have any experience with this weight range. Also his kids will probably use it and his son is about his size and there may be swinging and other careless/wreckless behavior that will stress the lines more than I ever would.

    Any qualms about hanging his weight or more with 7/64 whoopies?

    What do you big boys use?
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  2. #2
    Senior Member traftonm's Avatar
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    You will be ok with 7/64, I'm 230# and have been using the same woopie sling for about a year. About 40 nights total.

  3. #3
    Senior Member Tendertoe's Avatar
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    I'm 260ish now.

    Hung off Dynaglide in my more bloated days - pushing 280.

    There are a couple 300+ pounders hanging off Dynaglide now.

    Moral of the story - Dynaglide is rated at 1000 lbs. 7/64 Amsteel is rated at 1,600 lbs.

    Chart below from Knotty I believe (whomever this chart is from, feel free to chime in as I saw this ages ago and saved it in my documents) -



    As long as he is hanging at a 5 degree angle or greater he should be fine.

  4. #4
    opie's Avatar
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    276# here and I use 7/64. There are several 400#+ hangers using 7/64.

    Below is myself and both kids in a ENO double hanging off 7/64....



    And what it did to my pole...



    Oh... and a 7/64 sling will fail between 1400 and 1600 pounds.
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  5. #5
    Senior Member BrianWillan's Avatar
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    I currently weight more than your brother and I use 7/64th amsteel whoopie slings for my hammock suspension with polyester tree straps that I tie a marlin spike hitch with. I've not had any issues with hanging many nights. The important thing to get right is your suspension angle as that will reduce the forces on your suspension to approximately your body weight.

    As for fabric I use a BMBH and I believe is a 1.9 oz ripstop with an extra layer of it to form the pad pocket.

    Cheers

    Brian

  6. #6
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    Quote Originally Posted by hppyfngy View Post
    ...Also his kids will probably use it and his son is about his size and there may be swinging and other careless/wreckless behavior that will stress the lines more than I ever would...
    I foresee less than optimal setup angles in addition to the above.

    I spent too many years as a safety officer...I would go with 1/8" just to add in more margin for error.

  7. #7
    hppyfngy's Avatar
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    Quote Originally Posted by gmcttr View Post
    I foresee less than optimal setup angles in addition to the above.

    "and there may be swinging and other careless/wreckless behavior"

    I spent too many years as a safety officer...I would go with 1/8" just to add in more margin for error.
    Yeah see that's what I'm more concerned about. These guys aren't going to camp in it, it's for recreational use down by the river and such. I know 7/64 will hold him if he gets in it and takes a nap. But ad in any sort of horseplay and I don't know what the forces would be.

    I'm also inclined to go with 1/8 even though it seems unlikely to be necessary.
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  8. #8
    Senior Member Tendertoe's Avatar
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    Agreed. If they aren't hauling it on their back somewhere, no reason to not go with 1/8 for safety sake.

  9. #9

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    I've had myself, my wife & one of our kids in my ENOs (over 425# together) with no problems. If you get the optimum hang angle of 25* to 30*, see how little stress is put on the lines? Under 300 lbs of stress per line on a 250 lb person. You have a huge margin there.

    On the other hand, my kids were swinging hard and the nylon Slap Straps were rubbing on some wood about 2' ahead of where the sling was attached. It superheated and snapped in short order.

  10. #10
    hppyfngy's Avatar
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    Yeah, I might just go with 1/8 anyway just for maximum safety, and as I said they aren't concerned with weight at all.

    Thanks all.

    Cute kids Stu
    Caution: Happy Fun Guy may suddenly accelerate to dangerous speeds.
    If Happy Fun Guy begins to smoke, get away immediately. Seek shelter and cover head.
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