New CMI Pulley

Roughly speaking, been there done that walked a mile in those shoes. ; ) I have a collection of milled aluminum tree gear. Now I'm older and bifocal decrepit and mill work poses a challenge. Forgot to mention sandpaper final polish when the fine files kaff out. One hitchhiker-like device I made two alternate climber biner attachment blocks with holes 90 degrees different to see about better clearing the rope. I allowed 1/2" dia hole for biner occupied space. Csink and filing, I don't have any radiused cutters.

Numerical values for friction/tension ratio are in the Base Tied SRT TIP Forces thread.
 
We ran into a small delay in one of the processes (driving us nuts, we want this thing OUT). It wasn’t a dream. It's real, and it’s really coming out soon. Ish.
 
Shout out to arbsession and arbospace for picking up the RollnAnchor. Thanks, guys! (Who do I tag from their teams on here?)

In other news, the hardisling that arbsession is now advertising is closely related to the custom friction savers I've been using for a while, which work quite well with the rollnanchor.
 
10' ocean poly 10mm, double fisherman's loop capturing the other "leg" (help me with the terms, people- this type of loop has to have a name, right?). The two loops created this way are counter-adjustable. When one grows, the other shrinks.
 

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Crimsonking said:
10' ocean poly 10mm, double fisherman's loop capturing the other "leg" (help me with the terms, people- this type of loop has to have a name, right?). The two loops created this way are counter-adjustable. When one grows, the other shrinks.
Click to expand...
Not sure if you’d even want to do this but you could set a single rope and tie the rig as a regular french prusik or a klemheist and run MRS off of a stationary line.

That’s rad.
 
A friend used two RollnAnchors in the field this week, one as the SRS anchor, then added the MRS anchor as shown above. He then redirected the SRS line above a removal that he had once he was done pruning with the MRS line. Retrieved it all, including through the redirect. Not saying you need two, but I won't fight anyone who decides they do. It would work with a texas tug or flint locker as well.
 
Hey all, who has a RollnAnchor in your bag? Do you find yourself using it or passing it up for something else? How are you incorporating it in the field?
 
southsoundtree said:
What is the concern?



I hear lots of people talking warily about lots of things. Some are valid, while some are fear- based.
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On that note, though a slight derail here, how do you feel about using steel and aluminum together? I have been doing it for years, but my current employer doesn't like to ever see them even touch. I understand the concern for the faster wear on the aluminum, but I accept the fact that I will have to replace my aluminum pieces sooner than I otherwise would.
 
Matias said:
On that note, though a slight derail here, how do you feel about using steel and aluminum together? I have been doing it for years, but my current employer doesn't like to ever see them even touch. I understand the concern for the faster wear on the aluminum, but I accept the fact that I will have to replace my aluminum pieces sooner than I otherwise would.
Click to expand...
I am careful about it, but for climbing gear as long as it’s not connected for weeks on end and stored wet it’s not a big deal. The springs in aluminum carabiners are steel.
 
evo said:
I am careful about it, but for climbing gear as long as it’s not connected for weeks on end and stored wet it’s not a big deal. The springs in aluminum carabiners are steel.
Click to expand...
I am familiar with the galvanic reaction, and definitely never store gear wet at all. I also do take apart the steel and aluminum for storage, unless there is a grommet between them. I am alright with the materials science, but sometimes experience shows you things that don't look how you'd think they would. Thanks bud.
 
southsoundtree said:
What is the concern?



I hear lots of people talking warily about lots of things. Some are valid, while some are fear- based.
Click to expand...
To clarify, personally, I will still use the Quickie, I feel that it is tried and true with how much I’ve used them. This guy, whose opinion I respect, said he thought there wasn’t enough testing, or something like that. As I think about it, it’s kind of a fuzzy memory.

That being said, I really like the construction of the rolln anchor and the propensity for side loading. Makes me feel better, which goes a long way.

As far as aluminum on steel, the harder element will win. Certainly something to keep an eye on. It will wear just like rope will wear on things. I use stainless DMM Oval O biners on the rigging Pinto’s. They’ve held up well but I can definitely see a bit of wear on the beckets over time.
 
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