unicender

[caleb miller]

Advantages and disadvantages?

 

[monkeylove]

Midline attachable, SRT or Ddrt usable.

Does not tend well from below like a HC pulley does.

Highly recommend yoyomans drum for added control and reduced wear.

Very nice device, I used it everyday until....Rope Runner. Still use it everday but as a backup device on my harness (RR is still experimental) or on my second tie in point when I am working a "V" for positioning.

 

[oldfart]

PROS

• Super efficient: very low friction in the advance, virtually no sitback

• Precise, reliable control: when set away from your body for limbwalking, you get positive control of your balance and motion without any “slop” in the positioning

• Ascending and Descending in one device: it has the zero sitback efficiency of a cammed ascender but you can descend on it.

• SRT or DDRT, same device
• Midline attachable
• Multiple rope sizes
• Small vertical height from top of prussic to bottom of device
• Unlike a cordage prussic, it doesn’t need to be “tied, dressed and set.” Once threaded and dressed, it stays “set” by virtue of its design. This can be crucially important for a rope grab that will operate at a distance from you, such as a static anchor.

CONS

• It’s expensive
• It wears out and needs to be rebuilt
• It looks alien
• It doesn’t support multiple connections easily
• There is no reasonable way to re-direct the pulling/tending vector except straight down from the device Ie: toward your body
• In tight, crowded, intrusive climbing conditions, the paddles sticking out don’t give you a feeling of confidence

Here it is in a “climbing in a loop” ddrt system:

I like it a lot. But I also keep a Hitchclimber system.

OF