Gu's Goofy SRT Anchor...

JeffGu

Been here much more than a while
Lately, while staring up in a tree at a friend's house, I've been scheming to save money by using less rope... thereby letting me buy twice as many kinds of rope for the same money. Net savings of zero dollars. But, I can try more ropes this way. My wife fails to see my true genius shining through this plan.

I bought a couple of 75' hanks of rope just to experiment with a twist on an old idea. I hadn't seen this done quite this way before. The idea is to use extremely low cost, 3/16" lines to replace half of the rope. I seldom need to go higher than 75' on my initial climb, so that's what I bought. Any length of rope will work, the two retrieval lines just need to be the same length as the access rope.

PIC 01: Throw line in tree. Nailed it on the first try (*ahem*bullshit*ahem*). This crotch was only 25' up, but pretend it is 75' up there, the length of the climbing rope.

PIC 02: I now attach the orange retrieval line, 75' of 3/16" 550 paracord with a small ring on one end, and a small clip on the other. I clip the throwline to the ring and pull it up.

PIC 03: I now unhook the throwline and put it away, and clip the orange retrieval line to the friction-saver-anchor... this is a 3' long prototype. The climbing line is attached to the other end of the canopy anchor. I pull this up to the crotch.

PIC 04: When it gets close to the crotch, a quick jerk flips it through the crotch just like a ring-and-ring type friction saver. At this point, I clip the 75' black retrieval line, 3/16" Dacron polyester with a small ring on one end and a small clip on the other, to the tail end of the climbing rope.

PIC 05: Another quick jerk pulls it on through the crotch, and I bring it back down to me. If this crotch was really 75' up the tree, that's where the tail end of my rope would be, hence the need for the second retrieval line (actually an install line, at this point).

PIC 06: I now feed the black retrieval/install line through the large shackle on the anchor, and start pulling the anchor back up the tree by pulling the black line and climbing rope. In the pic, you can see them both because the crotch is only up 25' and the black line wouldn't actually be needed.

PIC 07: The anchor is back at the crotch, and the tail end of the climbing line is at the ground. A quick jerk and the anchor goes back into the crotch (going rope end first, this time) and the anchor is installed in choker mode in the tree.

PIC 08: Here it is, ready to go. There's no load on the rope, and the splice of the rope is in the shackle in this picture, but when I put some tension on the rope it choked up tighter and the smaller shackles that form the rope connection were through the large shackle and it was safe to climb. This 3' prototype was barely long enough to work on a stem this size, so my next one will be 4' long.

PIC 09: This was a picture of me pissing on the tree, and wasn't suitable for a family viewing audience.

PIC 10: Ready to climb! When done climbing, simply use the orange retrieval line to pull the whole thing back out of the tree. If it was really 75' up, I'd clip the black line back to the end of the climbing rope first, so the anchor can be lowered slowly, with control. That steel in the anchor hurts when it hits you.

PIC 11: Climb over, everything back in the coffee tubs and freebie (promotional item) shopping bag. Not much to the whole setup.

PIC 12: Packed up and ready to leave. Total weight of the whole setup is about 20 pounds. Heaviest item is the prototype anchor, which has a lot of stainless hardware.

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I might be nuts, but I really like this idea. It worked better than I expected, and didn't take long to set it up, even with me stopping to turn the camera on, snap a shot, etc. throughout the process. As I said, this will work with any length of rope, but 75' is fine for me, and I can try two ropes for what a 150' hank would cost me, or I can cut a longer rope in half and have two access lines for the same price I'd normally spend for one.
 

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Seems pretty cool and I don't wanna piss on your parade but I do have a couple questions. Do you think those shackles will hang up a lot in tight crotches? I get the cost savings but........ I have about a 75 to 100' piece of cougar with an eye spice on the end (was 160' but alas a well intentioned ground guy with a saw). I have a small oval link on the end of it and I set a delta link with an alpine for a canopy anchor with my main line. When I need all my rope and don't have enough on the ground for retrieval I clip that on the delta for retrieval. I do see how this would help by not having to spend much cash for retrieval lines. And it's wicket cool to invent and make stuff. I would worry about the snag factor. Sorry not trying to be negative.
 
I would worry about the snag factor.

When I left this morning, I was certain that it wouldn't work... for that very reason. However, we installed it in four crotches and I didn't have any trouble getting it through any of them. I suspect the weight lets it blast over stuff. It would hang if you tried to just pull it through, but I could jerk it through with no more than a couple tries.

This is a prototype, the next one will use a large rigging ring on one end, instead of the clumsy hardware on this one. Should help smooth out the pull through the crotch. It would also be lighter with aluminum rings, but I like steel.
 
Lately, while staring up in a tree at a friend's house, I've been scheming to save money by using less rope... thereby letting me buy twice as many kinds of rope for the same money. Net savings of zero dollars. But, I can try more ropes this way. My wife fails to see my true genius shining through this plan.

I bought a couple of 75' hanks of rope just to experiment with a twist on an old idea. I hadn't seen this done quite this way before. The idea is to use extremely low cost, 3/16" lines to replace half of the rope. I seldom need to go higher than 75' on my initial climb, so that's what I bought. Any length of rope will work, the two retrieval lines just need to be the same length as the access rope.

PIC 01: Throw line in tree. Nailed it on the first try (*ahem*bullshit*ahem*). This crotch was only 25' up, but pretend it is 75' up there, the length of the climbing rope.

PIC 02: I now attach the orange retrieval line, 75' of 3/16" 550 paracord with a small ring on one end, and a small clip on the other. I clip the throwline to the ring and pull it up.

PIC 03: I now unhook the throwline and put it away, and clip the orange retrieval line to the friction-saver-anchor... this is a 3' long prototype. The climbing line is attached to the other end of the canopy anchor. I pull this up to the crotch.

PIC 04: When it gets close to the crotch, a quick jerk flips it through the crotch just like a ring-and-ring type friction saver. At this point, I clip the 75' black retrieval line, 3/16" Dacron polyester with a small ring on one end and a small clip on the other, to the tail end of the climbing rope.

PIC 05: Another quick jerk pulls it on through the crotch, and I bring it back down to me. If this crotch was really 75' up the tree, that's where the tail end of my rope would be, hence the need for the second retrieval line (actually an install line, at this point).

PIC 06: I now feed the black retrieval/install line through the large shackle on the anchor, and start pulling the anchor back up the tree by pulling the black line and climbing rope. In the pic, you can see them both because the crotch is only up 25' and the black line wouldn't actually be needed.

PIC 07: The anchor is back at the crotch, and the tail end of the climbing line is at the ground. A quick jerk and the anchor goes back into the crotch (going rope end first, this time) and the anchor is installed in choker mode in the tree.

PIC 08: Here it is, ready to go. There's no load on the rope, and the splice of the rope is in the shackle in this picture, but when I put some tension on the rope it choked up tighter and the smaller shackles that form the rope connection were through the large shackle and it was safe to climb. This 3' prototype was barely long enough to work on a stem this size, so my next one will be 4' long.

PIC 09: This was a picture of me pissing on the tree, and wasn't suitable for a family viewing audience.

PIC 10: Ready to climb! When done climbing, simply use the orange retrieval line to pull the whole thing back out of the tree. If it was really 75' up, I'd clip the black line back to the end of the climbing rope first, so the anchor can be lowered slowly, with control. That steel in the anchor hurts when it hits you.

PIC 11: Climb over, everything back in the coffee tubs and freebie (promotional item) shopping bag. Not much to the whole setup.

PIC 12: Packed up and ready to leave. Total weight of the whole setup is about 20 pounds. Heaviest item is the prototype anchor, which has a lot of stainless hardware.

---------------------

I might be nuts, but I really like this idea. It worked better than I expected, and didn't take long to set it up, even with me stopping to turn the camera on, snap a shot, etc. throughout the process. As I said, this will work with any length of rope, but 75' is fine for me, and I can try two ropes for what a 150' hank would cost me, or I can cut a longer rope in half and have two access lines for the same price I'd normally spend for one.

Is your anchor shrink wrapped? You Sir, are a shrink wrapping maniac, lol. I like it.
 
about 3 layers... LoL... I have to buy it in 100' rolls or I'd go broke buying that stuff. Nylon cable ties... the whole industry will probably go bankrupt when I die. But I use the stuff for all manner of things.

I could see that. What sizes are you getting and is there any certain type of store to look for? What is the base for your SRT anchor, i.e. rope, webbing, or a combo? I have made some webbing friction savers in the past, but never did any thing else to them other than add a piece of webbing for wear against the tree. I need to get one pull tested and see where it breaks.
 

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That's nice work. Breaking the anchor is the least of my worries, they're two-ply crane slings with 5:1 SWL ratings higher than the MBS of anything else in the system. The only thing that can do them in, really, is UV and friction on the bark. The shrink tubing takes care of both, so they last forever. If they start getting ratty, I just cut the outer layer off and replace it. I actually have a couple I made in the late 1980's that I cut all of the shrink tubing off of... the slings look brand new. I also use bicycle innertubes over them, sometimes. I experiment with a lot of weird stuff, and see what actually holds up and what doesn't work so great. I've abandoned just as many ideas as I've kept, because the real world tends to operate a little different from the one in your head... sometimes a great idea isn't so great when an elm tree gets ahold of it. Or something ends up weighing too much to be practical.

Anyway, I buy shrink tubing from whichever vendor on FeeBay is selling the type I want for the best price. I prefer the double-wall, adhesive lined stuff for this kind of thing. I buy a lot of 3/4", 1", 1-1/2", 2" and 2-1/2" and occasionally other sizes. I usually buy those sizes in 100' rolls when I can get them.
 

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