Blake's hitch and a pulley for hauling uphill

[peds]

4 hours ago, Dan Maynard said:

There are some prussic video tests that I found earlier, the prussic was slipping rather than breaking in the one I saw but think 11kn. Plenty to stop you rolling down a slope.

Yep, they slip instead of snap, that's partly the appeal of them. They also bite easily again once below the slipping point, unlike some other progress capture devices, which is another big plus point for them.

[peds]

13 hours ago, slack ma girdle said:

Thin cord prussic always has and always will be an absolute git to release under load. Blakes hitch can always be released under load.

I'm tempted to start trying some of the prusik variations that have a carabiner contained within the knot (there's a few, the names escape me right now), as they are much easier to release after loading.
They also work great as the lower prusik on the 3-1 haul system, making it much easier to reset.

 

Why don't you set the system up and test it to destruction to see what breaks first ,  i.e. with a tractor in a field.

I like the cut of your jib, if we ever have a spare day for training we might do just that.

Edited June 25, 2022 by peds

[JAG63]

2 hours ago, peds said:

prusik variations that have a carabiner contained within the knot

Like the Bachmann.

[peds]

That's the fella.