Whoopie Lanyard Adjuster

Brocky

Brocky

Been here much more than a while
Location
Michigan
I thought I would break off from the bridge thread to just concentrate on the use of the whooping bury in place of a friction hitch on a lanyard. This is the latest version I have been trying
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I have found that the load contracts the tube, oh wait not tube but a sleeve, it squeezes the bottom first and works its way up the tub.. er sleeve separating the braid, stretching it. I found that sometimes the tightness of the braid stopped it from stretching and it would slip. The work around I came up with was to add a friction hitch to the top. The idea is the top hitch holds to stretch the sleeve as the load is applied to the bottom. The top hitch has to reliably grab each time it is loaded. I found that the sleeve grabs each time now, even in an SRT mode of use.

One problem with it, actually there is two, it's not midline attachable, is that it is too easy to descend on. The slightest touch on the top causes it to release. When climbing on it in SRT mode with my weight only about half of the sleeve gets stretched and a soft touch on the top hitch makes it release. If I milk the slack out of the sleeve to set it, by stretching it, than the top hitch has to move down about an inch to release.

One last thing, at the bottom of the sleeve I added a brummel of the rope through the tenex. The whoopie bury can be slack tendered like a regular lanyard without any added hardware. The brummel makes it move easier. If using for a SRT hitch you can self tend as you usually do by snapping to the section between the poacher knot and the brummel, again without adding anything else.
 
Have you tried to do the brummel on the other end instead of the hitch? Seems it should work. My guess is that you can run the rope through the tenex multiple times to achieve proper friction to set the sleeve.
 
I tried multiple brummels on the bottom and it didn't seem to add any friction. It might be enough though on the top to cause it to stretch. I will try it out thanks for the suggestion. Right now I've replaced the top hitch with a strip of velcro on the top. Looks to be stretching all of the tube, which is what is required, I think. I haven't climbed on it yet
 
Brocky said:
I tried multiple brummels on the bottom and it didn't seem to add any friction. It might be enough though on the top to cause it to stretch. I will try it out thanks for the suggestion. Right now I've replaced the top hitch with a strip of velcro on the top. Looks to be stretching all of the tube, which is what is required, I think. I haven't climbed on it yet
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Try electricians tape! :numberone:
 
Brocky!! This is what I LOVE about this forum! One idea can lead to a solution to a problem we never even knew we had!!

...but, though I will be keeping my bridge mod (for the two or three times a week I need it,) I start to feel that this is all no more than a 'thought experiment'.... or, at most, a VERY LIGHT & VERY compactable??.. rec-climbing set up.

You already pointed out the first major drawback of this idea, 'it's not mid-line attachable'!! (unlike a split-tail)

The second:
.. is that sap & saw dust = death for these beasts!

Throwing a spare 'distel' around the line seems much more reasonable compared to re-burying a line (mid-tree) when things get pitchy!!

Keep up the brainstormin'
 
@matamorph, you might have to jump in a time machine to get a Arborist's Cinch. They were made in the 80s, I don't know how many were manufactured. They were any early ascending and descending device for DdRT.
 
Using 3/8 Tenex on 10mm Mammut semi static. I have 10 mm HTP but it is a little bigger, not sure if it would fit inside the Tenex.

1/2 inch Tenex works on Safety Blue but I haven't play with those too much yet. It might work better on something knobbier like True Blue but I only had blue 1/2 Tenex and I didn't want to do blue on blue, especially after Labor Day.

I used the velcro version today while doing a small job and found that you can't tend slack without using something else. It did work during testing but after some use the sleeve just stay compressed and wouldn't advance. Could be the velcro was too tight and I was fighting that.
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1/2" Tenex on Safety Blue

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Velcro version
Edit: I forgot to add that the climbing on the velcro version today was SRT not a lanyard.
 
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So...I'm just sayin' that I love innovation, and this is super cool, but a hitch to make it grab seems like we could just use a hitch??? Can that work with some sort of elastic or spring type thing to create the engagement without sacrificing smooth tending? Like, put a rubber grommet around the sleeve close to the end, and fold the remaining sleeve back over the grommet to cover it, then apply heat shrink. Maybe something along those lines would replicate the taped end that @matamorph is using, but with spring action rather than a fixed choking tension.

$0.02
 
Baby steps! The top hitch has been replaced with the velcro which seems to work. The amount of squeeze can be adjusted with it. The velcro is adjustable on the fly while the tape, tubing or grommets would have to give the right amount of squeeze without adjustment later.

As far as how useful it will be as a friction hitch I don't know. Perhaps it is bettered suited for lanyard use.
 
I agree that I love the innovative thought going on with this. I think that not having the ability to check the ID of the sleeve for wear and safety checks might be an issue though. Love the creativity though.
 
Used a silicon rubber compound? on a protective sleeve for the RK. Pretty durable with good slip.
 

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So far to me it appears that the sleeve only needs added tension on the top to get more of it to stretch and squeeze. Your lacing idea has me wondering if some small bungee cord added to the braid at the top might work.
 
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