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  1. RBJtree

    Omni block 4.5

    http://www.yalecordage.com/featured-industries/arborculture/dynamic-energy-arborist-rope As was discussed in another thread (I can't remember which one) some of the numbers in the artical on the energy absorption of their ropes doesn't match the numbers they list in the catalog, but the formula...
  2. RBJtree

    Omni block 4.5

    What gives me pause is the demo on yales web site showing how a static rope will break well below tensile strength when exposed to a shock load. I wonder how steel and aluminium respond to shock loads near tensile strength.
  3. RBJtree

    Omni block 4.5

    I have seen it in several places including yale's web site. It does seem too simple to me, but it seems to work out based on testing. I even saw a live demo using an enforcer that supported that formula.
  4. RBJtree

    Omni block 4.5

    I am well aware of the forces created by dropping objects. A 4000lb object dropped at freefall will, according to most sources, 4000lbs x feet of distance. 6000lbs on that block is working load, not tensile. Tensile is 30,000 lbs. Even if your rope runner sucks and lets the log free fall 6 feet...
  5. RBJtree

    Omni block 4.5

    How much would you trust one of these? 6000lb wll, would you negitive rig 2000 lb logs onto it? 3000? 4000? I don't have any omni's yet. I assume the build quality is great. What is the sliding plate locking mechanism like? https://www.gaparboristsupply.com/shop/product/rock-exotica-omni-block-4-5/
  6. RBJtree

    Hitch hiker/2/x thread

    Yoyoman aka Richard Mumford aka Climbing Innovations has most likely break tested stitched eyes with the fabric paint. It was definitly stitched eyes we were talking about with the paint to protect the stitches instead of shrink wrap. He puts a lot of break test videos out on youtube, maybe one...
  7. RBJtree

    Anyone climb on 13 mm htp or km3 max?

    I have a rec climb planned for Sunday and will spending some quality time with this rope. I will certainly post my results. I'm really excited about this rope! Weirdly excited. I feel like a kid with a really cool new toy.
  8. RBJtree

    Anyone climb on 13 mm htp or km3 max?

    I got my new 13mm km3 in the mail today. I took a couple runs up and down a tree in my backyard for initial testing. On the hh2 with a four wrap valdotain of ice tail it is perfect tending durring ascent and smooth and controlled durring decent. I did not have a chance to do any big bombs...
  9. RBJtree

    Hitch hiker/2/x thread

    @yoyoman recommended clear dimensional fabric paint I think. I know nothing about fabric paint, but I also dislike shrink wrap on my stitching. So I am planning on trying to find it at some point.
  10. RBJtree

    Hitch hiker/2/x thread

    The Bulldog bone is great on the right rope. In many ways I think it's the best device that I have used. On the right rope. On the wrong rope it is not good. The hh2 is adaptable to a far greater range on rope and can be tuned in different ways with different hitch cords and hitches which makes...
  11. RBJtree

    Hitch hiker/2/x thread

    I too often disconnect for redirects and stuff and putting the pinto on in tree is a pain. I just picked up a fixe pulley on the recommendation earlier in this thread, but I don't suppose it fixes the reconnecting troubles.
  12. RBJtree

    Spiking boots?

    I can go up pretty quick on a clean pole like that, but I will never come down like that. My knees would be done. Forever. Maybe when I was late teens, early twenties.
  13. RBJtree

    Hitch hiker/2/x thread

    Sorry, I was typing my question while you were typing this.
  14. RBJtree

    Hitch hiker/2/x thread

    Does the biner on the terminating end conflict with the hh2 at all? It looks kind of like the two biners would hit together at the bottom and hold themselves apart at the top.
  15. RBJtree

    Hitch hiker/2/x thread

    Here is the picture I promised. Really no visible wear in the area of concern. Does it look any different from yours?
  16. RBJtree

    I just wanna climb some trees.

    I just wanna climb some trees.
    • RBJtree
    • Profile post
  17. RBJtree

    Anyone climb on 13 mm htp or km3 max?

    That km3 grip does look interesting.
  18. RBJtree

    Anyone climb on 13 mm htp or km3 max?

    Now this is interesting. I was always looking at teufels numbers in their listings for arborist ropes, but if you look up the same rope under a different use type, they list elongation as percentage at x.x kn. Km3 13mm is listed as 2.8% at 1.35 kn (roughly 300 lbs) and 4.5 % at 2.7 kn (roughly...
  19. RBJtree

    Hitch hiker/2/x thread

    I found no reports of failure, but I still don't claim authority. Here is the tech notice from cmi.
  20. RBJtree

    Hitch hiker/2/x thread

    Sure I will get a picture. My understanding is, the "fault" in the original was that the hard coat would wear off where the bridge rubs it. There is or was an advisory pdf about it on treestuff in the details of the cali. If the hard coat is not worn off, i think there is no problem. I have...

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