Author Topic: gumby protraxion question  (Read 1885 times)

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Offline csproul

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gumby protraxion question
« on: April 05, 2010, 08:27:47 pm »
So I have been experimenting with my new protraxion. When you need to lower your bag a little bit, is there an easy way to lower the bag? I was able to put the haul end through my cinch/grigri and use it to take the weight off the haul line. Then I depressed the button on the protraxion to release it and lowered with the grigri, activating the teeth on the protraxion when I was done. This process was not super-smooth. Is there an easier way to lower the bag a short distance, or do I just need to practice more?

Offline AstroArlo

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Re: gumby protraxion question
« Reply #1 on: April 05, 2010, 09:06:42 pm »
A technique which is used extensively in Search & Rescue are load releasing hitches.  For example, one used is called a "Radium Releasing hitch."  Basically a munter, figure 8, and three wraps between two carabiners, designed to lower a rescue load of 2-3 people smoothly (the 3 wraps provide a very inefficient 3:1 "pulley").

So, the bag is tied off to the Radium Releasing Hitch, and if you need to lower, you let out some of the slack in the radium releasing hitch.  In rescue, we use 10m, which lets us lower about 3 meters and transfer weight from the RRH to another rope or anchor.

Best Regards,
Arlo

http://slowmotrainwreck.blogspot.com/2010/01/radium-release-hitch.html

Offline mhudon

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Re: gumby protraxion question
« Reply #2 on: April 05, 2010, 09:22:28 pm »
Do you really think you need all that advantage for a haul bag? It's a great technique for when you have a sever lower out and have a lot of rope. What about the Munter tied to the anchor and the Grigri to another part of the anchor. I don't think I'd even use the ProTrax in the mix. I don't think it adds anything of value to the system.

Offline *Mucci*

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Re: gumby protraxion question
« Reply #3 on: April 05, 2010, 09:23:59 pm »
Munter/mule hitch or a yates adjustable daisy.

With the latter you can attach a ladder to the ring on the pull side to give you an advantage.




Offline csproul

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Re: gumby protraxion question
« Reply #4 on: April 05, 2010, 09:28:11 pm »
I'm thinking a little more basic here...i.e. while hauling, the bag gets hung up, so you want to lower it a few feet and try again. Or, I've hauled it up to the anchor and tie a munter mule to the anchor, and now want to lower the bag a bit so the munter-mule is taking he weight. Using a pro-traxion or mini-traxion type device, is there an easy way to lower this small amount? The easiest way that I came up with was to use my grigri, release the pro-traxion, lower a bit with the grigri, and then re-engage the pro-traxion to begin hauling again.

Offline mhudon

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Re: gumby protraxion question
« Reply #5 on: April 05, 2010, 09:34:14 pm »
I'm thinking a little more basic here...i.e. while hauling, the bag gets hung up, so you want to lower it a few feet and try again. Or, I've hauled it up to the anchor and tie a munter mule to the anchor, and now want to lower the bag a bit so the munter-mule is taking he weight. Using a pro-traxion or mini-traxion type device, is there an easy way to lower this small amount? The easiest way that I came up with was to use my grigri, release the pro-traxion, lower a bit with the grigri, and then re-engage the pro-traxion to begin hauling again.

oh yeah, that's the ticket I'd come up with, although see my "Personal 2:1" post if you happen to hose yourself somewhere in there.

http://www.bigwalls.com/forum2/index.php?topic=877.0

Offline Mike.

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Re: gumby protraxion question
« Reply #6 on: April 05, 2010, 09:45:03 pm »
Why not just reverse haul a few strokes? It's already rigged. Just basically reverse the hauling process, releasing the jaw using the red button during the lowering part. Look at the side plate where the jaw pin slides in the track to really understand the action of the button beforehand. Don't snap the jaw shut on a huge load going down--keep it in control.
« Last Edit: April 05, 2010, 09:47:14 pm by Mike. »
Say no to limbers, excavators and retro-bolters. No matter how much he smiles.

Offline csproul

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Re: gumby protraxion question
« Reply #7 on: April 06, 2010, 06:03:34 am »
I had thought of that, but didn't really try it. I wasn't sure I'd be able to coordinate unweighting the protraxion jaws whille releasing them with the button. Something I'll definitely try.

Offline Mike.

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Re: gumby protraxion question
« Reply #8 on: April 06, 2010, 08:35:48 am »
Use shorter strokes than you would hauling. You have to be able to reach the pulley and manipulate it. Do it once and you'll have it wired. It's not difficult at all.
Say no to limbers, excavators and retro-bolters. No matter how much he smiles.

Offline kristoffer

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Re: gumby protraxion question
« Reply #9 on: April 06, 2010, 11:38:10 am »
im with Mike, reverse the haul. simple and fast with no re-rigging.
"I am plagued by a mindless nonchalance and petrified zen"

Offline mungeclimber

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Re: gumby protraxion question
« Reply #10 on: April 06, 2010, 11:47:44 pm »
I had thought of that, but didn't really try it. I wasn't sure I'd be able to coordinate unweighting the protraxion jaws whille releasing them with the button. Something I'll definitely try.

easier with partner for sure.


on protrax, we noticed you don't want to suck the bag up too tight at the anchor. leave room for letting out a bit like mike. said.

my 2 cents