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  1. lumberjack

    Loopie sling strength rating

    :lol: Nick, he's been here for 6 months. Better late than never, I suppose. :)
  2. lumberjack

    Loopie sling strength rating

    Yep, 22x the diameter. I normally use 3/4" since now I normally only use ISC spring blocks.
  3. lumberjack

    Loopie sling strength rating

    Or look at it like this. Pulling end to end, you can see how tying a loop doubles the strength of the line, right? (Excluding strength loss from joining the ends) That's essentially what a loopie is, an adjustable loop. A whoopie is nothing more than an eye to eye sling with one eye being...
  4. lumberjack

    Loopie sling strength rating

    Because the loopie has 2 legs running all the way around the tree whereas the whoopie necks down to a single leg at my arrow above.
  5. lumberjack

    Loopie sling strength rating

    Because there's is two legs. The strength loss in a girth hitch (normally approximated to 20% of the basket) is due to the rope being bent over itself. The sharper the angle, the more stregth that is lost. ETA: In your second picture, in a perfect world, the eye of the whoopie should be big...
  6. lumberjack

    Loopie sling strength rating

    What does "one thickness" matter? You have 2 load bearing legs either way. The strength difference is where the whoopies 2 load bearing legs become a single load bearing leg in the picture I posted above. Any sling will have different ratings for a basket (4x) vrs a girth (normally 1.6x).
  7. lumberjack

    Loopie sling strength rating

    The eye is not where the strength reduction comes from. And if there were 2 layers of sling around the eye, all 4 legs captured, the eye would be 4x as strong.
  8. lumberjack

    Loopie sling strength rating

    Both have dual legs going around the block's eye. A single leg would require a knot or it'd fall off. A whoopie has one leg, where a loopie has 2. I saw your stumps (according to one of the city guys) on 1st Ave NW.
  9. lumberjack

    Loopie sling strength rating

    A whoopie has one leg at it's thinnest spot (between the eye and the adjustable eye), a loopie has two (it's a loop after all). I made a one or two whoopies before going to loopies. Not so much for strength as adjustability. Nice job in Vernon.
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