Bend Radius

[KevinS]

XRR say always use 3 rings as a terminal rigging point, however pinto,buck blocks, r&r friction saver with 2 1/2" thick rings and we rig some decent pieces has anyone ever tested different systems to break like Xman did? what were the results?

 

[Merle Nelson]

Kevin, you ask a lot of good questions. I’ll be very interested in any serious thoughtful answers that come.

 

[bonner1040]

This is a Beast XRR and a Large 28/20XRR compared to ordinary tools. THis is great because it works like a R-r friction saver and is retrivable with an overhand knot and 1/2 line.

I wont say bend radius isnt a real factor to consider but I think people sometimes unnecessarily make too a big deal out of it.

Here is a 28/20 and a Forged 1/2" Rigging ring. I use this basket in basket and choking setup all the time. So with or without the 1/2" steel ring.

Here is a 20/14 and a pensafe ring. This is definitely lighter duty but still very capable.

This is 2 28/20 rings, I rigged some ridiculous stuff off of this and it was great in the bucket. Retrievabilty wasnt awesome so I took it apart after I amde the bigger one shown above.

 

[bonner1040]

So I havent done official testing but I have tons of field testing with no worries.

 

[KevinS]

Thanks bonner.
What is your go chocker when blocking down a spar. Say no more than 6' blocks ask or maple 16" across?

 

[bonner1040]

This is my everyday rig. I use it for almost everything. I have negative blocked some big wood onto this guy. The black rigging ring can be used to equalize two TIPS or as a retrieval for choked config.

The Pinto pulley (since respliced onto 10mm TVP) chokes through the big ring like a Pulleysaver or Tom Hoffmans uSAVER.

Here is some video (rough stuff) in descending level of focus on my rigSAVER

http://www.youtube.com/watch?v=zLu1LsFHQtQ

http://www.youtube.com/watch?v=lc1BdMDdsYc

http://www.youtube.com/watch?v=ZX3mzpieSA0

http://www.youtube.com/watch?v=g9B5_J_5l4o

Here is a video by Randy Morrisette
http://www.youtube.com/watch?v=JKGPF9envmk

and here is a link to a thread on the rigSAVER
http://masterblasterhome.com/showthread.php?16847-rigSAVER

 

[Norm_Hall]

Attached is a chart I've been using for training purposes for years. It's from one of the big 3 USA rope manufacturers.
Cycles-to-failure will eventually come into play on repeated use small radius bends.