Hang on, the first pulley doesn't provide any mechanical advantage, right? It's fixed, meaning it's only changing direction (and in this case, capturing progress), but not actually multiplying force. The pulley needs to move in order to provide mechanical advantage. So if I'm not mistaken, this single Z drag will give a 2:1 advantage because the tail of the rope moves twice as far as the load? Edit: I looked it up and it's 3:1. I'm not sure why, exactly. But I'm still convinced the first pulley fixed provides no mechanical advantage. Only a direction change.
I’ve been beginning to use rope and carabiners for landscaping and noticed how my system closes and can’t be reset so this is exactly what I need. I’ll probably by the CT roll and locks but I would also love to see how this can be done without them. Thank you for this video and piece of knowledge.
Thanks for the video. Why not just use a trucker's hitch and keep it simple though? You can get a considerable amount of tension without having to use pulleys or prussics
So, using this method, of pulley system to put tension on a line, could you form a retrievable anchor,one rope bridge system (commando bridge) using a stone knot and fiddlestick? Once the last man is across, they pull the fiddlestick tagline (in a perfect world where it isn’t held by all the force of the line.) They pull the rope, and then wrap up their line. I think I’m going to find a place in a park to do this in a controlled environment.
@@LiveRogue UPDATE: Testing this on the small scale shows it works. I got the hardware necessary to try this and my setup was as follows. 1ST ANCHOR: Stone Knot/Fiddlestick setup so you can retrieve. 2ND ANCHOR: Nylon webbing flat anchor, Micro Traxion progress capture device, and then the system you guys showed in the video. I weigh 260 pounds, and after pulling the line taught, it held my weight on the middle line. And even with the tension on the line, the fiddlestick came out easy enough to retrieve the system. The fiddlestick, using the Blu Gnome Speedstick, allows you redundant means of locking the system until the last man across is up. System works, thank you for helping me make a fun project.
The advantage to using a progress capture pulley device is that it reduces friction. Using a totem or other device in plaquette mode will work but cause LOTS of friction and reduces efficiency.
Hang on, the first pulley doesn't provide any mechanical advantage, right? It's fixed, meaning it's only changing direction (and in this case, capturing progress), but not actually multiplying force. The pulley needs to move in order to provide mechanical advantage. So if I'm not mistaken, this single Z drag will give a 2:1 advantage because the tail of the rope moves twice as far as the load?
Edit: I looked it up and it's 3:1. I'm not sure why, exactly. But I'm still convinced the first pulley fixed provides no mechanical advantage. Only a direction change.
I’ve been beginning to use rope and carabiners for landscaping and noticed how my system closes and can’t be reset so this is exactly what I need. I’ll probably by the CT roll and locks but I would also love to see how this can be done without them. Thank you for this video and piece of knowledge.
Great advice. Thank you!
Thanks for the video. Why not just use a trucker's hitch and keep it simple though? You can get a considerable amount of tension without having to use pulleys or prussics
Great tip. If you don't have the locking pully could you make one with an auto locking truckers hitch?
I’ve done that but it depends on the load and the rope. The friction can melt or fray the rope. Works pretty good with paracord.
Nyc ♥️ z Polly
So, using this method, of pulley system to put tension on a line, could you form a retrievable anchor,one rope bridge system (commando bridge) using a stone knot and fiddlestick?
Once the last man is across, they pull the fiddlestick tagline (in a perfect world where it isn’t held by all the force of the line.)
They pull the rope, and then wrap up their line.
I think I’m going to find a place in a park to do this in a controlled environment.
Cool, we will have to give it a try.
@@LiveRogue UPDATE: Testing this on the small scale shows it works. I got the hardware necessary to try this and my setup was as follows. 1ST ANCHOR: Stone Knot/Fiddlestick setup so you can retrieve. 2ND ANCHOR: Nylon webbing flat anchor, Micro Traxion progress capture device, and then the system you guys showed in the video.
I weigh 260 pounds, and after pulling the line taught, it held my weight on the middle line. And even with the tension on the line, the fiddlestick came out easy enough to retrieve the system.
The fiddlestick, using the Blu Gnome Speedstick, allows you redundant means of locking the system until the last man across is up.
System works, thank you for helping me make a fun project.
How difficult is it to release the tension on this system using a progress capture pulley?
Have you tried this with a totem at the first pulley point?
The advantage to using a progress capture pulley device is that it reduces friction. Using a totem or other device in plaquette mode will work but cause LOTS of friction and reduces efficiency.
That makes sense. So to release it do you just pull on the tail end and flip the capture part over?
Thank you for your videos by the way!
How to release the tension?
Move the line for tensioning the opposite direction.