surveyor
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Everything posted by surveyor
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Thanks everyone. The Bone is easy off and on line with the right rope. It grips when weighted right now, and is only a hands breath long even when weighted, this makes it nice, according to the last user I talked with, when you are choked up close to the spar.
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The Bone with new style bottom arm which supports the bottom friction pin better, if the swivel snap link was left inadvertently open. Also the upper release arm now has hard rubber nubs, which increase the comfort and act to prevent any potential cross-loading of the top and bottom arms.
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I have made a small improvement to the OAR design. As you see the arms now provide support to the friction links. The snap swivel links would be installed also, as in the Bulldog Bone, but this picture shows the way the links are supported. The OAR is suitable for DdRT on Tachyon and is intended to be tended by pulling line through from below.
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Safety alert for Bulldog Bone users. see bottom of thread for picture and comments. Compact Bulldog Bone | Page 132 | The BuzzBoard
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Perhaps there is a shorter foot loop girthed unto the loop that encircles the tree, hidden on the far side.
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I find that Allgear Rocket line runs well with the installed (5/8") bollard. Vortex is not quite as smooth to release but works best in my estimation with the 1/2" bollard pictured. My new favorite is Cougar.
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should have included a link, here it is. bottom of page. Compact Bulldog Bone | Page 111 | The BuzzBoard
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Please see Mike Powers post and picture on page 111 of the Treebuzz site of a potentially hazardous situation with a longer style loop tether attached on the upper arm of the Bone. Gordon
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Thatoldchesntnut, would you mind posting a picture of your DdRT setup with the Bone? Thanks, Gordon
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He said that it worked for him "out of the box", and I had the 5/8" bollard installed on his. Of course each bone comes with three bollards included, so the Bone can be fine tuned.
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He says elsewhere that it is Tachyon, which he preferred over the Imori he tried out. I do not yet have much feedback with this new Bone, but the 11.7mm ropes seem to work well.
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Here is a video made of my latest Bone batch. It shows well how the Bone tends from the brass ring point. Thank to John for allowing me to share this. video.[ame] [/ame]
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Max I like 14 oz. better : ) Luke, some climbers use the hole in the spine for tending. This seems to require a more leaned back position while ascending. Some love the D-ring on the top arm, which seems to work best with a more upright position while ascending, others attach a loop of throw line that runs down through the inside of the top arms and fastens to the hole in the spine. Try each and choose what works best for you. : )
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Not sure about the grams, but it weighs 14 oz. on a kitchen scale. The New Bone is essentially the very same weight as the older ones.
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Thanks, Luke. Here is a picture of the new Bones. Notice both the top and bottom arms are stubbier and the upper pivot is reduced 1/8", also the scallops on the arms are a bit wider to ease installation of the rope into the arms.
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Just a note. I now have Bulldog Bone parts back in hand. This batch uses aluminum alloy 7075 throughout.
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I am currently out of stock with the Bulldog Bones, but a new batch of Bones is in the works!
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Thanks Rich. I did a quick search and at least one climber says "Cougar works well with the 3/4 bollard". If you like the loose VT tho, maybe you should stick with the 5/8" bollard, as long as the Bone does not creep for you with that size bollard.
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I should add also that several climbers have found that the Bone tends best on ascent with a loop of throw line tied to the upper arm of the Bone, fastened between the upper pivot link and the friction link
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Rich, It sounds to me like you may need to go with the larger bollard for the Cougar Blue, and I think that is what the US climbers are saying also that use that rope. The mid size steel bollard that I typically ship it out with installed is indeed 5/8" dia. You will likely find that with Tachyon the 5/8" bollard is best. Tyler climbs with escalator I believe, which is likely a more static rope with a denser? construction than the Cougar, which seems to suit the Bone best. I have not heard anyone say that the Bone "beds in" with use, although the rope tends to flatten with use. It should work smoothly from the outset with the right bollard matched to the rope and climbers weight. Maybe try squeezing the top release arm down, with the heel of your hand on the bottom arm, you can get very fine control this way.
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None to NZ.....yet. I have to AU.
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[ame]https://www.youtube.com/watch?v=FamFwkqLYQc[/ame]
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The Rock Exotica Nano swivel works like it was made for the Bulldog Bone, by all accounts. It is simple to replace the teardrop attach point on the BDB, by removing the SS cotter and SS half link pin, and replacing it with the Nano swivel by inserting the pin and cotter through the small eye of the Nano. A swivel directly on the Bridge works just fine also with the BDB. An OAR user put a LJ swivel on his OAR, however I believe that the hole in the LJ swivel is approx. 1/4", whereas the half link pin on the BDB is 5/16"
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That was fast John. I guess customs now knows what a "Bulldog Bone ascender/descender" is in the UK. There is some good discussion at Treebuzz about the best way to advance the Bone while ascending. One way is to fasten a bit of throw line to the top release arms, between the top double joint link and the friction link of the top arm, and tether there to a chest attachment (see Sash style chest harness also at Treebuzz)
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Adam, your private messages mailbox is full, so I cannot respond there. Look at my profile to find my email, and we can correspond there. Thanks Gordon
