/ abseiling with a single rope and a tagline
In the past when I have Abseiled off using a tagline I have simply joined my rope and tagline by figure of 8ing them to a screw gate and as I have been abseiling off mallions I have simply relied on the large size of the screw gate jamming against the mallion, and then retriving my rope with the tag line.
I know this isnt really ideal and I was also wondering how people abseil directly off for instance an abolakov thread with a tag line set up. So what are other peoples methods for abseiling directly off tat using a tagline?
tie them together, clove hitch a krab to the main rope, clip rope back onto itself around the v-thread/whatever. make sure the tag line + knot is on the 'pull side'. off you go.
if youre strapped for krabs can also attach the rope back on itself with a loop (tied with a bowline or fig8 depending who you argue with).
as it goes, the screw gate jamming against the maillon is considered fully acceptable to the international canyoning commission (the most anal rope work people ive ever come across). they suggest clove hitching a largee HMS for the job.
Cavers don't bother with a krab and just use a jammed fig. of 8 knot at the mid point of a rope on pull-through abseils off fixed gear in caves (which is basically the same thing as using a tag line for retrival.) I've done it many a time and seems perfectly safe. I believe it's a fully approved method by the BCA, another organisation not known for its lack of anality.
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