mechanical advantage climbing line

[Tree Pig]

Im sure this is possible but not sure if it is worth the time and effort of setting up, but has anyone ever set double pulleys on a climbing line. At 43 and 275 any thing that would make it less work would be good.


example

 

[Ghillie]

Im sure this is possible but not sure if it is worth the time and effort of setting up, but has anyone ever set double pulleys on a climbing line. At 43 and 275 any thing that would make it less work would be good.


example

Yes they have and I cannot think of where on here I saw the pictures. It wasn't quite set up the way you have it though.

They used revolver carabiners, the ones with the sheave built into them.

Actually, I think I saw the pictures on another forum... I will see if I can find them.

 

[Tree Pig]

Thanks appreciate that. The pic was just something I had in my head.

 

[Ghillie]

I cannot remember where I saw it now. I am sorry.

But I will try my best to describe it.

This is using a hitch climber setup. What I remember seeing was the running line that came out of the micro pulley tending your hitch going up to another pulley (the picture showed a revolver) attached to your working portion of your rope coming out of the top of your friction hitch (distel, vt etc...)

In my mind, it made a 2:1 on the hitch side of DdRT (which is already 2:1) so it should make it 4:1.

 

[Ghillie]

Basically move the top pulley in your drawing over to the other line going up.

 

[treemandan]

Basically move the top pulley in your drawing over to the other line going up.

I think if the pulley you are talking about is put there it will work until the pulley system closes ( runs out of rigged rope). I don't know what you would do then.

 

[Ghillie]

I think if the pulley you are talking about is put there it will work until the pulley system closes ( runs out of rigged rope). I don't know what you would do then.

If I remember (if) right, it was on a htich also. so when you run out of rigging room, you reset.

 

[Tree Pig]

The idea I was thinking of is having the second one (left) off on a split tail or eye to eye using the pulley only for assist but you would have to tend it by hand. keeping it on the load end would keep it from bunching with the other one and climbing with my right on the working end it would leave my left to tend the second pulley. When ready to descend just remove the hitch and pulley and head down

 

[treemandan]

If I remember (if) right, it was on a htich also. so when you run out of rigging room, you reset.

Yes, though I would perfer a mechaincal acsender over a friction hitch. I guess to would move it up along with everything else as you went. Its not like you can just reach up 20 feet to reset the pulley.

I think just a good srt system is better, I think. Each pull up is exactly that, in the end you use the same amount of energy. With a pulley system you don't travel as far with each pull.

 

[Tree Pig]

If I remember (if) right, it was on a htich also. so when you run out of rigging room, you reset.

yeah what he said


I am sure I had seen this somewhere also but dont remember and cant find it

 

[treemandan]

The idea I was thinking of is having the second one (left) off on a split tail or eye to eye using the pulley only for assist but you would have to tend it by hand. keeping it on the load end would keep it from bunching with the other one and climbing with my right on the working end it would leave my left to tend the second pulley. When ready to descend just remove the hitch and pulley and head down

If you pull the end of the rope which you have depicted in the first pic you will not go anywhere.

 

[Tree Pig]

Yes, though I would perfer a mechaincal acsender over a friction hitch. I guess to would move it up along with everything else as you went. Its not like you can just reach up 20 feet to reset the pulley.

I think just a good srt system is better, I think. Each pull up is exactly that, in the end you use the same amount of energy. With a pulley system you don't travel as far with each pull.

In theory it should be half the energy and much cheaper then setting up a SRT system ($30 for a new pulley).

 

[Ghillie]

Yes, though I would perfer a mechaincal acsender over a friction hitch. I guess to would move it up along with everything else as you went. Its not like you can just reach up 20 feet to reset the pulley.

I think just a good srt system is better, I think. Each pull up is exactly that, in the end you use the same amount of energy. With a pulley system you don't travel as far with each pull.

Good point on the SRT. You would be using a much larger muscle group that way, getting your legs involved. You have tofigure out what is more efficient for your preferred way of climbing without a huge expediture on new gear.

Stihl-o-matic, I'll keep looking. It may take a day or two but I'll keep looking in case nothing else comes up.

 

[Tree Pig]

If you pull the end of the rope which you have depicted in the first pic you will not go anywhere.

Why not? The pic was just a quick drawing so its rough. But the bottom is a hitch (for me blakes... distel or VT soon hopefully) with a pulley tending it. then instead of going down it wraps back up over second pulley and down so when tending slack I am pulling straight down with extra help instead of kinda out and up.

IN MY MIND IT WORKS AWESOME

 

[treemandan]

Why not? The pic was just a quick drawing so its rough. But the bottom is a hitch (for me blakes... distel or VT soon hopefully) with a pulley tending it. then instead of going down it wraps back up over second pulley and down so when tending slack I am pulling straight down with extra help instead of kinda out and up.

IN MY MIND IT WORKS AWESOME

the second ( high ) pulley is connected to the other side of your taughtline loop which has to move upwards when you acsend. If you are pulling it down...
Maybe I am not seeing it right, set it up in the field and give it a go.

 

[Adkpk]

IN MY MIND IT WORKS AWESOME[/COLOR][/B]

:monkey:

 

[treemandan]

Good point on the SRT. You would be using a much larger muscle group that way, getting your legs involved. You have tofigure out what is more efficient for your preferred way of climbing without a huge expediture on new gear.

Stihl-o-matic, I'll keep looking. It may take a day or two but I'll keep looking in case nothing else comes up.

Not only that but each time you strecth out, grab and pull you are getting a full extension. This is more efficient than short pulls also its better for your body to fully extend. Like in weight lifting. full extension, muscle memory.

 

[Ghillie]

In theory it should be half the energy and much cheaper then setting up a SRT system ($30 for a new pulley).

What about using a pantin to get your legs involved? instead of making it easier for your upper body, get your legs working too.

I have tried that before with a gibbs ascender and a loop of webbing to put my foot through. I tailed the line up to my harness so I could pull slack through the ascender without bending over everytime.

IN MY MIND IT WORKS AWESOME

It always does......doesn't it? I hear what you're sayin'.

 

[Tree Pig]

What about using a pantin to get your legs involved? instead of making it easier for your upper body, get your legs working too.

I have tried that before with a gibbs ascender and a loop of webbing to put my foot through. I tailed the line up to my harness so I could pull slack through the ascender without bending over everytime.







It always does......doesn't it? I hear what you're sayin'.

The only reason I have resisted ascenders is I like being being able to go up and down at will without having to remove or add anything. Yes I understand this would also mean any long decent would mean removing the top pulley. But if it saved me some energy to get in the tree it would be awesome.

 

[LTREES]

If you pull the end of the rope which you have depicted in the first pic you will not go anywhere.

Your right Dan It doesn't work, tried it tonight. There has got to be a way to set up a pulley system.

LT...