Moderator: Tim White
junkman wrote:In the second pic. they put a z-rig on the end of the 2:1.
They are using a Garda knot as the progress capture device in place of a prusik minding pulley and prusik knots.
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I am interested in trying out the second one (2:1 w/z-rig) and see how it performs.
For all of the above haul systems you need a cooperative patient.
Even with that, I think it is worth trying it out.
junkman wrote:You are correct sir.
My concern is how much friction will this haul system generate.
I want to try small pulleys at various points to lessen the overall friction of the system.
As stated above, this is all about testing the most efficient systems for small party/ minimal equipment rescues.
Tim White wrote::hairpull: A lot of friction. Especially in these area (not to mention the lip).
junkman wrote:Also, instead of using a Garda knot using a Beckmann knot as the progress capture.
fuzzy-hair-man wrote:Why not take the ascender or ascenders off another member of your group and use these as your progress capture? a Tibloc also works as a progress capture device (I carry one as a spare ascender)
NZcaver wrote: Some pulley substitutes (besides just a carabiner) include the lower bollard on your Stop descender or bobbin...
fuzzy-hair-man wrote:The lower bollard on a Stop can be used as a pulley and progress capture device. (Petzl documentation shows it threaded around both bollards but I'm not sure what this achieves other than adding more fricton )
however a couple issues to be aware of obviously the friction increases because it's not a pulley so the load on anchors increases as well, and the Stop AFAIK not hugely strong and it may be relatively easy to get to the loads where it is above the maximum load rating.
Life On a Line has quite a bit about building hauling rigs and it seems quite complete.
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