light rigging with ring and "figure 8" aka "rescue 8"

[snunyabizness]

haven't seen this previously. orientation seems to matter. figure8 on sling first, then ring, rigging rope from groundee through outside of ring, rigging rope to cut piece between ring and figure8. add an expected wrap through figure8 to add canopy friction. un flook the rope off the figure8 to make groundee rope up easy.

 

[snunyabizness]

meant to mention: rigging rope pressure from ground causes the ring to squeeze onto the figure8, kind of dynamic mechanical friction. I think you can add more friction too.

 

[snunyabizness]

friction: on the load leg of rigging rope, pass bight through large figure8 hole and around the horn.

 

[snunyabizness]

sling goes through big ring

 

[flushcut]

I don’t get it. But if it works for you, go for it.

 

[Bendroctanus]

It looks like it works much like a safebloc. Which is pretty cool if you’re working with what you have. Certainly deserves a controlled test run. I would be wary of going for it on a job. But it “looks” as though it would be very effective.

 

[Bendroctanus]

Seems like you’d be hard pressed to pull the rope back up without releasing it from the 8. The safebloc is easier but not perfect, rigger gets a workout pulling the rope back up to you. But the 8 I think would give the same friction both ways. It would be a great rig for keeping on your saddle for target pruning, rigging down bigger reduction pieces. Even self rigging. I may need to explore this now.

 

[Lumberjack]

Technically a rescue 8 has ears to prevent the rope from girth hitching around the 8.


I've done quite a bit with a rescue 8, or a Saf-T-Bloc over the years, I primarily handle the friction aloft to make the groundy's job easier.

 

[ATH]

I've really been liking the Scarab for light rigging when friction is needed

 

[snunyabizness]

Seems like you’d be hard pressed to pull the rope back up without releasing it from the 8. The safebloc is easier but not perfect, rigger gets a workout pulling the rope back up to you. But the 8 I think would give the same friction both ways. It would be a great rig for keeping on your saddle for target pruning, rigging down bigger reduction pieces. Even self rigging. I may need to explore this now.

correct, it's almost impossible go pull the rope back up without unlocking the figure8. Having the ring connected next to it is quick and easy. downside is you have to be next to the rigging point to reach it.

 

[snunyabizness]

Technically a rescue 8 has ears to prevent the rope from girth hitching around the 8.


I've done quite a bit with a rescue 8, or a Saf-T-Bloc over the years, I primarily handle the friction aloft to make the groundy's job easier.

that's interesting, i didn't know that about s rescue 8

 

[Lumberjack]

that's interesting, i didn't know that about s rescue 8

You can get them in aluminum or steel, I kept an aluminum one on my previous lift. CMI Rescue 8 hasn't changed in the 28 years or so since I used them in Boy Scouts.

 

[Brando CalPankian]

I use them mostly for 2 man controlled speedline jobs. I can have the ground "catch" the piece, I then control that line with the fig 8 while they maintain the speedline. Have used lightly experimentally as solo rigging.

I find the control inconsistent. It's not a "use every day" thing but it gets used a couple times a year.

Rope access folks love them.

 

[Reach]

I use them mostly for 2 man controlled speedline jobs. I can have the ground "catch" the piece, I then control that line with the fig 8 while they maintain the speedline. Have used lightly experimentally as solo rigging.

I find the control inconsistent. It's not a "use every day" thing but it gets used a couple times a year.

Rope access folks love them.

I have one in my gear collection, I have used it in a tree precisely once. Back when I climbed rock it was great for jumping off cliffs (rappelling) but I have yet to find a good use for one in trees.

 

[snunyabizness]

I have one in my gear collection, I have used it in a tree precisely once. Back when I climbed rock it was great for jumping off cliffs (rappelling) but I have yet to find a good use for one in trees.

there's things you can do with a figure8 besides rappelling off the spar rigging rope (which was the only time I saw another climber using one). It can be used for srt as a redirect or as a "soft 8" style canopy anchor. I guess folks commonly do light rigging off harness in place of s munter. you can use it on your tail to do a controlled massive swing. it can also be used pretty anywhere a dmm ring would be used.
mine sadly has never seen use in daily production. it stays in the bag unless i'm geeking out trying to figure out a practical use for it.

 

[snunyabizness]

I guess it could be used as a small portawrap at the bottom of the tree too. I thought there was a way to add an extra wrap.

 

[Reach]

there's things you can do with a figure8 besides rappelling off the spar rigging rope (which was the only time I saw another climber using one). It can be used for srt as a redirect or as a "soft 8" style canopy anchor. I guess folks commonly do light rigging off harness in place of s munter. you can use it on your tail to do a controlled massive swing. it can also be used pretty anywhere a dmm ring would be used.
mine sadly has never seen use in daily production. it stays in the bag unless i'm geeking out trying to figure out a practical use for it.

I know there are plenty of things that it can be used for, I've just never found a use for it myself. I've always found something else that works just as well without needing to carry it around in the tree.

 

[Bart_]

Cool idea. Previously I've heard that using a rescue 8 puts a twist into the rigging line. Have you seen any sign of that? By the way, I carried a figure8 on my saddle for years as a backup emergency descender. Never used it once, finally took it off but it jingled a bit like cowboy spurs when I had it on. You could hear me coming, especially if I also had my Pantin on.

 

[ATH]

Cool idea. Previously I've heard that using a rescue 8 puts a twist into the rigging line. Have you seen any sign of that? By the way, I carried a figure8 on my saddle for years as a backup emergency descender. Never used it once, finally took it off but it jingled a bit like cowboy spurs when I had it on. You could hear me coming, especially if I also had my Pantin on.

Yes, it would twist the rope...just like rappelling with a figure 8 twists the rope.

 

[snunyabizness]

Technically a rescue 8 has ears to prevent the rope from girth hitching around the 8.


I've done quite a bit with a rescue 8, or a Saf-T-Bloc over the years, I primarily handle the friction aloft to make the groundy's job easier.

walking this through: if there is a lot of slack and then the right gyrations, the wrap could reform into a girth hitch and lock the entire thing up. hmm. in your experience and what you were taught, does this actually happen, is it just theoretical or at what frequency? in the configuration in the pics above, do you think that is a possibility with the inline ring? if so, how would someone mitigate risk?