Author Topic: 3:1 hauling system  (Read 7494 times)

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Offline blackrider

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3:1 hauling system
« on: May 03, 2006, 09:48:20 am »
Hello Everyone

Is it possible to use a Z xC pulley system as used in crevasse rescue , for hauling on walls. Could I just add another pulley to the anchor so that it redirects the rope for a downward pull rather than have to pull up to haul?
If not could anyone post a picture Of a tried and tested 3:1 hauling system that most bigwaller use? Any advice will be appreciated . Thanks

Offline buffalohorn

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hauling
« Reply #1 on: May 03, 2006, 12:40:16 pm »
I personally have never used anything more than a wallhauler and my partner as a counterweight to haul. Be sure to back up the hauler and your counterweight should remain TIED IN to something bomber!! Pack light and climb fast and early. NEVER skimp on water!!

Offline the_dude

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3:1 hauling system
« Reply #2 on: May 03, 2006, 02:21:16 pm »
I never brought enough stuff to set up a 3 to 1 yet. PTPP has a good picture of one over at rockclimbing.com. I think if you look at his profile, you can hunt through his stuff and find it. he also posts here once in a while so maybe he will post one up.

Offline the_dude

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3:1 hauling system
« Reply #3 on: May 03, 2006, 03:36:34 pm »
here's the link to the picture...

http://www.rockclimbing.com/photo/photo_show.php?id=3071

cheers

Offline blackrider

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3:1 hauling system
« Reply #4 on: May 03, 2006, 06:26:12 pm »
I've used the setup that is pictured in the link. I was just curious if it is possible to eliminate the addtional cord which is used to create the downward pull stroke  .  Is there a way of setting up a 3:1 system that has a downward pull without having to create it by using a additional cord for it? Thanks

Offline euroford

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3:1 hauling system
« Reply #5 on: May 03, 2006, 07:58:03 pm »
it is shown in Jared Ogdens "Big Wall Climbing: Elite Technique" book.  though its very simple, you'll kind of say 'duh why didn't i think of that' after you see the picture.  i'll try to describe, hopefully i'll make sense.

-rig through protraxion as normal.
-attach ascender upside down to pig side of haul line with a pulley attached.
-slack side of haul line comes out of protraxion, then down through pulley at the ascender.
-slack side of rope runs out of ascender pulley, and back up through another pulley attached at the 'safety' point on the protraxion for a redirect.

i have -very- limited experience with this setup, but it worked very well for me and required only the addition of two small pulleys.  another good point, is that it can be rigged and derigged onto a standard 1:1 haul setup while under load.

i use Dmm Micro Pulleys, light, cheap, alum. sheeves and ball bearings.

Offline syrinx

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3:1 hauling system
« Reply #6 on: May 03, 2006, 08:00:23 pm »
Ummmm, that link is to a 2:1 hauling system. For a 3:1 an additional pully would be needed. There is no way to create hauling ratchet without an additional cord. The sneaky way of doing buisness is to use the extra rope in  your haul line to rig the ratchet. Then the more you haul, the more rope you have available for the ratchet and you can take in more line before needing to reset the ratchet. More later perhaps.

Syrinx
Never approach a bull from the front, a horse from the rear, or a fool from any direction!

Offline the_dude

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3:1 hauling system
« Reply #7 on: May 03, 2006, 08:30:38 pm »
yeah, I know it was a 2-1 picture, but figured it was a good starting point to see a basic pulley system. I've only used 3-1 and 5-1 in rescues, but never for hauling.

Offline blackrider

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3:1 hauling system
« Reply #8 on: May 04, 2006, 08:25:30 pm »
Thanks euorford . That is exactly what I was looking for . The other day I set up a very similiar haul but had to use different gear. It went like....

-Inverted ascender with pulley attached as normal
- prussik with attached pulley to pig side of haul line
- slack side of haul line comes out of inverted ascender / pulley combo, then down  through pulley attached to prussik.
-slack side of rope runs out of pulley/ prussik, and back up through another pulley attached to haul anchor carabiner for a redirect.

My last question is" By adding the last pulley as a redirect does this system still remain a true 3:1 hauling system ? " Or is the mechcanical advantage now increased to a less desirable higher ratio?

Offline euroford

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3:1 hauling system
« Reply #9 on: May 07, 2006, 09:25:56 am »
you have the jist of it, but with more improvised gear.  it works more efficiantly when you don't have to use prusics ect, but it gets it done and its nice to know how to build up with min. stuff.  the 3:1 advantage isn't affected by the redirct pulley.

maybe this afternoon i'll rig up and take a shot just to post after i get all my stuff out of the car.  uhg, always hate dragging the pack up my 3 floors of stairs.

Offline euroford

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3:1 hauling system
« Reply #10 on: May 08, 2006, 07:54:08 am »
basic 3:1 hauling rig.  rope coil = pig, yellow jug is on the side you pull to haul.


Offline the_dude

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3:1 hauling system
« Reply #11 on: May 08, 2006, 05:49:24 pm »
Thanks for the photo! Definetely looks easy to set up and tear down mid haul.

Offline blackrider

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Re : to picture
« Reply #12 on: May 08, 2006, 08:27:31 pm »
Thanks for taking the time to post the picture.  I need to get around to learning how to post pictures one of these day.

Offline syrinx

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3:1 hauling system
« Reply #13 on: May 08, 2006, 11:32:36 pm »
Blackrider check here to learn how to post a photo.

Syrinx
Never approach a bull from the front, a horse from the rear, or a fool from any direction!