srte noworries descender does not seem to work with rad system

I

ilya

Just wondering if its me not doing something right? or this descender is not does not have the capability to be used with rad system? It just jams itself up. is this thing only designed for descending and nothing else? I should've bought the petzl I D (Large) . does anyone want to trade? I bought it used , but plenty of life left in it. Or should I keep it and find a use for it? what would I use it for? like maybe use instead of a portawrap for small stuff? its got a descent load rating! (-: :-)

here is some info:
DBI Sala NoWorries Double Stop Descender

The Rollgliss NoWorries Stop Descenders connect a user’s harness and rope line and are designed to allow the operator to regulate friction and deliver a controlled descent on an anchored rope. The handle acts as a dynamic variable friction lever, capable of going from a complete stop to complete go.


Features:

  • Multi-function design reduces the amount of equipment needed
  • Incorporates the functionality of a stop descender, chestascender and belay device in one compact unit• Auto stop descent mechanism allows you to stop the descent ifyou move the handle too far or if you panic and let go of the lever
  • Allows you to hard lock off if you intend to be stopped forany length of time allowing you to conduct rescue or workoperations with total freedom of movement and peace of mind
  • One handed auto stop belay for lowering heavy loads withmaximum control, safety and ease
  • Available in a range of models to suit rope sizes from 10.5 -13.5 mm
  • Aluminum construction with anodized finish for superiorcorrosion resistance, or Stainless Steel construction forspecialist applications
  • Handle color signifies suitable rope size
s-l1600.webp

this is not the one I bought , mine is more used. just an image from internet. (too lazy to go outside now)
 
These devices are primarily descenders, and although you can make short ascents with them, there's a lot of drag and they're big and clumsy for that purpose.

In no way are they strong enough to replace a portawrap, even for light rigging. They're designed to slip when shock loaded, and will send your wood crashing to the ground if you misjudge the weight. They also won't handle the shock loads typical of rigging applications.

I have an ISC D5 and a Petzl I'd (small) and do use them in light rigging scenarios where another device is providing the friction and the descender is only holding a small percentage of the load. For example, to control light rigging loads sent down a speedline... using a Rig 'N Wrench setup above the descender, which I use to ease the load down the speedline. For loads up to about 300 pounds, this works because the descender only sees about a third of the load. This is a static rigging setup, and I avoid shock loading it. Typically, several pieces in the 25 - 60 lb. range on loop runners.

Some people use these devices to build a lowerable basal anchor for SRT climbing, and they're often used in hauling and tensioning systems for rescue work and slackline systems.

For tree work, there are much better systems that are cheaper and better suited for the work. Those descenders have plenty of uses, though, and are nice to have around. On a sketchy tree, you can hang a rope on a canopy anchor nearby (on a different stem) and have a quick way to bail if things start going badly.
 
20171014_111420.webp bought petzl I D . works perfect. then tried this one again. here is the picture. ( I did not climb with this carabiner, and probably shouldn't have used this for a picture, I know. )
 
Did you deploy the ascend contraption shown at 2:20 in this video?

The one in your second picture does not seem to have the ascent parts.

 
JeffGu said:
For tree work, there are much better systems that are cheaper and better suited for the work. Those descenders have plenty of uses, though, and are nice to have around. On a sketchy tree, you can hang a rope on a canopy anchor nearby (on a different stem) and have a quick way to bail if things start going badly.
Click to expand...

After watching the video, I’ll stick with my zigzag.
 
yeah, I guess mine is an older model. I didn't notice it till you poined it out. The pdf instructions are for the new one as well. I guess I have no use for it now. Thanks for the replies!
 
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