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  1. #11
    sr1355's Avatar
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    Glad your a-okay.... I use the 4/4 method, 4" gives me a 2" closed loop and 4" buried... nothings moving yet...rather be safe than end up on the ground...
    Happy Hangin'

    Paul - SR1355
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  2. #12
    Senior Member digrat's Avatar
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    Sounds like you made a "whoopsie" sling instead of a "whoopie" sling.
    -Digrat
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  3. #13
    Bubba's Avatar
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    Quote Originally Posted by dammfast View Post
    shows you how "slippery" amsteel is, my understanding is that most of a locked brummels strength is supposed to come from the lock.
    The strength of the fixed loop comes from the bury. The lockes brummel can provide a little strength but the constriction around the bury is what is needed. The primary reason for the locked brummel is to prevent the bury from coming out when the loop is not loaded. You can make a fixed loop without the locked brummel that holds just fine. People do this and then run a few stitches through the bury to prevent it from coming out when not loaded.

    Manufacturer's recommendations for the fixed loop bury is somewhere around 6 inches, I can't remember exactly with 2 inches of that being a taper. I have made them shorter but I'd never go less than 4.5 inches. Not surprised that 1 inch did not hold. Glad you did not get hurt.
    Last edited by Bubba; 08-28-2012 at 08:18.
    Don't let life get in the way of living.

  4. #14
    L.D. Cakes's Avatar
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    Quote Originally Posted by Roe Ring View Post
    This was my understanding too. I have even bought items from well established vendors with short buries on locked brummels. The lock fails by parting the amsteel fibres along the length of the bury, as has happened in this case. The bury has to be long enough to withstand this splitting force. It's not a traditional pulling force you would get with a straight brummel such as a continuous loop, but it's similar. I dont know whether or not a slightly shorter bury can be trusted, but for reference, my whoopies have locked brummels with 2" bury + 1" tapers. So far they have carried 200lb without problem. For the sake of an extra couple of inches, I would make them with a decent bury in future.

    Glad the OP didn't have any injuries.

    Atb

    Mark
    The same happened to me his past weekend. I was using a continual loop that I had gotten through a buy on the for sale forum and wasn't sure how well they were made. Well the bury was too short and I hit the ground. I'm glad I don't hang very high so it was just a short fall on soft ground.
    Love many, trust few & always paddle your own canoe. American Proverb

  5. #15
    PapaSmurf's Avatar
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    Samson's recommended bury is 42 times the diameter of the cord.
    7/64" = 4.59" + 2.29" taper
    1/8" = 5.25" + 2.625" taper
    Samson Rope claims a 90% to 100% strength with the lengths above.

    I spoke with someone just last Friday who pulled a set of whoopies to failure using these specs.
    Result: the rope failed (not on a splice) at the exact rating of the rope.

    Since we hangers do not normally reach this maximum strength of Amsteel, many feel that the length of the buries can be shortened.

    How much can they be shortened?
    I bury all my suspension eyes a minimum of 4" (when using a locked brummel). I've never had a failure yet and am not interested in finding this lower limit.

  6. #16
    stevebo's Avatar
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    Quote Originally Posted by chapinb View Post
    Curious - how long did it hold? Was there swaying involved?
    This was brought up in an earlier thread, how much bury do you need in a whopping. Obviously 1 inch isn't enough. But is 3? 5?
    It failed in about 2 seconds. (no swaying involved) After It happened, I looked at the other sides locked brummel---it was ready to go too! To be honest, if I had followed directions, and put a proper bury on it, it would have been fine. (but, as my wife will tell you, Ive never been into that whole "following directions" scene!)

    Also, from now on I'm going to bring a small piece of wire with me when I hike---so I can repair/modify my amsteel while in the woods if needed! (for those who havnt made whoopie slings, a bent over piece of wire is used as a splice tool)
    Last edited by stevebo; 08-28-2012 at 09:26.
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  7. #17
    old4hats's Avatar
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    I know that I have been tempted to use less amsteel on a project, especially when I see how fast my stash is dwindling, but so far I have gone ahead and done it as recommended. I always think that no matter it it is expensive, it is still only a matter of less than a dollar to make sure something works. Penny pinching doesn't work here.

  8. #18
    Acer's Avatar
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    I try and go min 4 inches,,better at 5 just to be safe,,never had a failure yet.

  9. #19
    Senior Member timabababaluka's Avatar
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    I'm always tempted to cheat a little bit on bury length, and it rarely ends happily for me when I do. Fortunately my failures have occurred at home rather than out in the field, and they have taught me a valuable (sometimes painful) lesson: as much as I would like the extra 3-5 inches, they are a small price to pay for peace of mind
    You're gonna need a bigger hammock

  10. #20
    MAD777's Avatar
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    I've always understood that "locked brummels" are there to hold the loop together, only when no load is applied. It just keeps them from falling apart when they are thrown loosely into your storage bin at home, etc.

    The bury provides the strength for a loaded situation. If you skimp on the bury, you are skimping on the strength of the suspension.

    I have completely abandoned locked brummels in favor a sewing a few hand stitches into the bury.
    Mike
    "Life is a Project!"

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