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  1. oldfart

    U-RIG -- a new approach to MA for tree work

    I've dialed-in the U-RIG design to my satisfaction and put up a “how to build” video: <u>U-RIG build details</u> The original video, previously posted, is here: <u>U-RIG Pocket MA for tree work</u> Another video, not previously posted, shows using the system as a Radium Load Release...
  2. oldfart

    U-RIG -- a new approach to MA for tree work

    What a great question, Mark. I was unhappy with the performance of the UltraTech load prusik. With great help from Luke and Nick, we're running tests on ice tail, focusing on exactly what you're asking about. Within a week, I'm releasing another vid plus these test results. Sit tight.
  3. oldfart

    U-RIG -- a new approach to MA for tree work

    Tom D, Years ago, you put me onto the Radium Load Release Hitch. I tried it yesterday with this new rig. Put the Munter on the anchor binner and tie the Mule around the whole system above the second anchor pulley. Seems to work great. The trick is after you tie the Mule, jam it down on...
  4. oldfart

    U-RIG -- a new approach to MA for tree work

    hay Kevin, This setup might be useful in a couple of situations: when the anchor is far away and you want the “controls” closer to you instead of at the anchor; or you already have a line under tension, you don’t want to release it but only add more tension ( I just want a shorter rope).
  5. oldfart

    U-RIG -- a new approach to MA for tree work

    Good news: the Sterling Aztek Tactical kit uses exactly this approach. I'm going to try it on the second RockO (the one farthest from the anchor). One trap should stabilize both binners.
  6. oldfart

    U-RIG -- a new approach to MA for tree work

    Guys, what do you think of using the lanyard style RockOs as corner traps at the anchor end? Lanyard RockO
  7. oldfart

    U-RIG -- a new approach to MA for tree work

    Good thread, guys. Marden, you and Tom are right: in the 5:1 lifting MA, the internal line doesn’t need to be strong. BUT when you thin it out below 10mm, two things go wrong … you can’t grab it and you can’t wrap a good prusik. BUT BUT BUT, in the hauling rig setup, better rope means...
  8. oldfart

    U-RIG -- a new approach to MA for tree work

    Thanks. Good comments. At the head end, you’ve actually got three (3) reasonable choices, all dual with becket: PMP2.0 ………. 2” dia, 13mm, 19 oz, 6.4” tall, $105 P51D ….. 1.5”, 13mm, 14.5 oz, 6.4” tall, swivel, fabric friendly attachment, swinging sideplates, $121 P21 ………. 1.1”, 11mm...
  9. oldfart

    U-RIG -- a new approach to MA for tree work

    Kevin, I don't have your fiddleblocks so I'm guessing but I don't think it will work. The lead prusik is easy. But you also need the Load Prusik on the last line that goes out to the load. Check out the Sherrilltree cartoon. I don't think the FB will properly tend that Load Prusik. But if...
  10. oldfart

    U-RIG -- a new approach to MA for tree work

    Hi, Kevin.  How's your smaller XRR project?   Have you posted? There are two Tom's in the thread so I'll jump in too ... The 90 feet was chosen just by size and bulk.  Most of the 8 pound system weight is in the HTP.  Empty, the pulleys+binners are only 3 pounds (!). The 90' gives you 17' of...
  11. oldfart

    U-RIG -- a new approach to MA for tree work

    Tom, I understand and completely agree with what you said. But there's a difference between application and design. With modern cordage, you could shrink this internal cordage down to nothing but it wouldn't be friendly to your hands. You asked me what I designed for. But in the video I...
  12. oldfart

    U-RIG -- a new approach to MA for tree work

    I'd love to see it. Sounds very interesting. Great question on strength and cordage. In the 5:1 Lifting, the dual pulley limits at 36 kN so any cordage over 1620# just goes to SF. BUT in my Hauling setup, the internal haul line doubles as rigging line. It's one-log-one-rope! I sized for...
  13. oldfart

    U-RIG -- a new approach to MA for tree work

    Thanks, Tom. I tried this rig at 8:1 using a whoopie with one X-large XRR as the choker. Worked great but I didn’t need that much for this little log. But it sure felt like a lot of power for a pretty minimalist collection of gear. Do you have pix of Brion’s rig?
  14. oldfart

    U-RIG -- a new approach to MA for tree work

    Gentlemen, Here’s an idea that could eventually have some value but it needs work and I’m asking for your help. It’s a new approach to a small MA system for tree work… It’s pre-rigged and fast like a Pocket Rescue system, but with tree-sized components. It’s efficient like Fiddleblocks...
  15. oldfart

    Big News

    Wowser. This should be a seriously good combination. Congrats, Nick. Congrats, Luke. Tom
  16. oldfart

    X-rigging rings

    Kevin, The rings have different SWL, roughly doubling for each size up. I think the numbers are in this thread somewhere or maybe X can re-post. JD? If you're putting the rings in an eye splice, I don't see any particular problem going a little undersized in cordage. If you're putting them...
  17. oldfart

    X-rigging rings

    Nah, I'm not that photogenic. Someone sent me the pix and I laughed so hard I had to use it
  18. oldfart

    X-rigging rings

    Yeah, can you believe that knucklehead has no eye protection?
  19. oldfart

    X-rigging rings

    I wanted to clean up an inaccessible (for equipment) shoreline area and I needed a special rigging solution. I grabbed my new XRR Beast Whoopie and reconfigured it to give one (1) travelling re-direct and one (1) choking re-direct. <u>XRR Travelling Re-direct</u> The rings continue to...
  20. oldfart

    Fimbl saver

    I agree with Sirnick … the friction is OK, but not great. I think its best feature is small size/light weight. Unbeatable on that. I built a knock off with a retrieval tail to use with a DEDA climbing lanyard. Small, unobstrusive, fine for short climbs on the lanyard. The tail lets me set...

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