Compact Bulldog Bone

oldoakman said:
Hammer, we will be able to answer that question in a few days, how about it TL!
Click to expand...
It's on the way as of yesterday.

My original BDB, without the updates/mods was supposed to go back to surveyor, but is making a detour to oldoakman's place. His climbing weight is somewhere around the 325 lb mark so I think it'll be a good test. He's going to take it low and slow but personally I think the BDB should be fine. Which bollard and line will work is yet to be seen.

I'm curious if surveyor has ever tested how it reacts with heavier weights but honestly, all it can do is slip. It ain't gonna break.
 
The way its designed , coupled with the correct rope and bollard . I don't even see slippage as an issue.
Minor slippage at best.
Bulldogs like more meat I'm telling you !
 
Never say never. I am apprehensive of that much weight on the Bulldog Bone, and have cautioned Oldoakman and expressd my concern to Treelogic. In addition that Bone that was to be returned to me had one cut too deeply with the groove on one lower arm. In the interest of caution I would request that that Bone be returned to me please. I would recommend that the upper limit for the Bone be 250 lbs.
 
There are now corrosion resistant links in stock and so I can make up two new Bulldog Bones now from my original batch of parts, with a second batch to follow. Moving forward I will be using SS links at the teardrop attach point and at the upper double joint, with the steel corrosion resistant links at the friction points.
 
Here they are side by side...well top and bottom.

img_0966-jpg.28458
 
To be clear, the Bulldog Bone is stout and will work DdRT, and would work fine that way at 250 lbs. + gear, as it is bearing less weight than SRT. The Bone can be made to be self advancing with a tending prussic on the standing part of the line.
 
In the lead off video for this thread you can see three holes in the upper arm in the original Compact Bulldog Bone at the top friction link which allowed for various levels of grip (and ease of release) depending on which hole the friction link was installed. I settled on one hole with three bollards which come with each Bone for dialing the grip to various ropes and climbing weights, however DMC is reporting that if a top pivot hole is drilled one inch from the friction link, it works better on his Vortex and is easier to release and advance while ascending. This hole is easily made to the top arm if any others would like to make this mod for their fatter ropes!
 
I have only used the BDB with a new Tachyon rope one time and regularly use it with Yale 11.7 (Aztec). While it works well with both ropes, my first impression is that it has a smoother, more controlled release on the Aztec. Granted, it is a subtle difference and may change as the Tachyon see's more use.

Disclaimer...I'm a big fan of the Yale 11.7's.
 
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