Compact Bulldog Bone

When I was at Expo I picked up a Rock Exotica Micro Swivel. This afternoon I mounted it but I haven't climbed on it yet.

Eric/Oceans had some input which has merit. He would clip in with a biner and have the swivel, with a larger eye, floating on the bridge. He likes the action and can use the eye to clip in a second system too.

For now, I'm going to put it on my bridge just like I've run the Unicender for many years. If I use a second attachment I use the ring on my bridge or clip directly to the bridge. It all depends on which way I want my multicender to faceCR BDB with Rock Exotica Swivel.webp
 
Definitely looks cool ..function of the bone in my experience with it, is a redirectors dream ..if you are planning on leaving it on bridge simple redirect s where you could pass the bone around by just uncliping without taking rope out of bone would take a bit more time,I'm talking a few seconds in reality ,that's the only limitation I can see , but if it not an issue to you TD rock on !
 
I think the cool thing about it is ...we want bone, swivel, biner. But this setup takes a piece out of the bone and replaces it with the swivel. So now we're back to just bone and biner, yet the bone still swivels. I like it.
 
I didn't measure the ID of the swivel eye before mounting it. That's probably on the Rock Exotica spec sheet. There is a little play. I might find a bit of tubing to sleeve the pin.
 
OK, so today was a veteran Pin Oak climb and there was significant crown damage from a previous storm. I climbed DSRT with two Bones. The setup was as follows:

~ 200' Escalator bagged up and loaded into the base anchor.
~ 175' of KMIII and 120' of Tachyon pulled through the same union and connected to the Escalator.
~ 2 BD Bones with bollard sizing to match each climb line diameter.
~ Single rope bridge with Rock Exotica swivel, both Bones loaded into the same swivel eye.
~ 7' positioning lanyard.
~ HAAS 2.0/Clip'N combo.

What I found was that I could rope walk up a single line as normal in SRT, but I could up a bunch of tail weight before leaving the ground, so the second Bone just gobbled slack as I climbed. Nothing different than normal, just a touch slower for the first time with these tools. Footlocking would be a snap if anyone is even up for that anymore. You could easily tend both tails simultaneously with that method.

Having both units in the same swivel eye was really helpful numerous times during the climb.

This tree was WIDE and also fairly wide open for a Pin, but it's super old and pretty beat up. I had a nice central leader to tie into and the Tachyon sort of became the back line while the KMIII was the lead. I must have made that choice since the KMIII is a bit lighter and feels easier to advance around the crown. I had an absolute blast today with this setup.

Planning your route is so much fun, because it's so easy to travel wide distances once you have a couple complementary redi's loaded up. Quite literally, from the outer reaches of some leaders, I could hang glide right back towards the center and prepare to head out into another section. Passing limbs is great when you can alternate one 'scender at a time. You can also keep the lanyard quite short. I probably only used about 4' or 5' of working end the whole time so I could keep the lanyard tail daisied up and snag free. Trust me when I say that with the concept down and a bit of practice, it's easier to manage two main lines as one than messing around trying to stow/unstow a lanyard tail a couple handfuls of times during a climb.

I felt so secure at all times with all the redundancy, but navigating never felt like that. the two tails manage just like one, and even when you have the two lines in different redirects that spread the incoming rope angle above your multiscenders, you can still grab both lines together and tending both tails together on limb walk returns....this is obviously to a point, but needless to say, the farther away you are from your redi's, the easier it is to manage both systems as one. I'm thinking that it's even easier to work both Bones with one hand since the climber's load is shared between the two and maybe that helps. I think it's more than just perceived, even with slightly spread incoming rope angles.

There's a bit of video from my co-worker today, and I'll be sure to post it once it's sent to me.
 
TL...I don't like the term 'ghetto lookin'

Using things for a second or third purpose fits with my outlook. Save resources...be creative. This is an evolving process. Since I had the plastic washers I used them. much easier to modify plastic than to modify a stack of metal washers. If things turn out right I'll have a much nicer finish. I think that using large diameter socket head cap screws would be ideal. I have some that would be the right diameter. The catch is that I'd have to drill and tap the holes bigger. Since I only need a little thread I'll have to cut off the screw to fit. Way too much work for my first itteration.

If I were to eye-ball estimate the ID of the small end of the swivel I'm guessing that I only need about 3/32" shim stock. The rubber insert is meant to grab an oval cross section biner...like a Rock O ;)
 
John U.
I am not ignoring your private message to me, there is some sort of glitch and I have no dialog box in the private message in order to message you back.
Check my profile page and you will find my email there.
Thanks, Gordon
 

That looks real nice, Tom. I was planning to do the same thing but decided to hold off for the time being until I got to know the BDB a little better. One thing people should be aware of is that when you capture an eye of a small swivel like that on something as long as the Bone, the risk of side loading the swivel increases. Mounted on your bridge the way you are planning to I can't see much danger but if it were to be used in say a DRT setup the chances for cross or side loading would increase.
 
One thing people should be aware of is that when you capture an eye of a small swivel like that on something as long as the Bone, the risk of side loading the swivel increases. Mounted on your bridge the way you are planning to I can't see much danger but if it were to be used in say a DRT setup the chances for cross or side loading would increase.
I'm not sure I comprehend this completely sir , care to elaborate if possible?
 
OK, so today was a veteran Pin Oak climb and there was significant crown damage from a previous storm. I climbed DSRT with two Bones. The setup was as follows:

~ 200' Escalator bagged up and loaded into the base anchor.
~ 175' of KMIII and 120' of Tachyon pulled through the same union and connected to the Escalator.
~ 2 BD Bones with bollard sizing to match each climb line diameter.
~ Single rope bridge with Rock Exotica swivel, both Bones loaded into the same swivel eye.
~ 7' positioning lanyard.
~ HAAS 2.0/Clip'N combo.

What I found was that I could rope walk up a single line as normal in SRT, but I could up a bunch of tail weight before leaving the ground, so the second Bone just gobbled slack as I climbed. Nothing different than normal, just a touch slower for the first time with these tools. Footlocking would be a snap if anyone is even up for that anymore. You could easily tend both tails simultaneously with that method.

Having both units in the same swivel eye was really helpful numerous times during the climb.

This tree was WIDE and also fairly wide open for a Pin, but it's super old and pretty beat up. I had a nice central leader to tie into and the Tachyon sort of became the back line while the KMIII was the lead. I must have made that choice since the KMIII is a bit lighter and feels easier to advance around the crown. I had an absolute blast today with this setup.

Planning your route is so much fun, because it's so easy to travel wide distances once you have a couple complementary redi's loaded up. Quite literally, from the outer reaches of some leaders, I could hang glide right back towards the center and prepare to head out into another section. Passing limbs is great when you can alternate one 'scender at a time. You can also keep the lanyard quite short. I probably only used about 4' or 5' of working end the whole time so I could keep the lanyard tail daisied up and snag free. Trust me when I say that with the concept down and a bit of practice, it's easier to manage two main lines as one than messing around trying to stow/unstow a lanyard tail a couple handfuls of times during a climb.

I felt so secure at all times with all the redundancy, but navigating never felt like that. the two tails manage just like one, and even when you have the two lines in different redirects that spread the incoming rope angle above your multiscenders, you can still grab both lines together and tending both tails together on limb walk returns....this is obviously to a point, but needless to say, the farther away you are from your redi's, the easier it is to manage both systems as one. I'm thinking that it's even easier to work both Bones with one hand since the climber's load is shared between the two and maybe that helps. I think it's more than just perceived, even with slightly spread incoming rope angles.

There's a bit of video from my co-worker today, and I'll be sure to post it once it's sent to me.
Thanks for sharing! two bones would be pretty sweet... sounds like something to share in the DRT thread. I used DRT today and my co-worker said "YOUR CLIMBING SUCKS!". I laughed of course
 
John U.
I am not ignoring your private message to me, there is some sort of glitch and I have no dialog box in the private message in order to message you back.
Check my profile page and you will find my email there.
Thanks, Gordon

Got your pm, thanks. Will get the release to you out when I have a minute.
 
TL...I don't like the term 'ghetto lookin'

Using things for a second or third purpose fits with my outlook. Save resources...be creative. This is an evolving process. Since I had the plastic washers I used them. much easier to modify plastic than to modify a stack of metal washers. If things turn out right I'll have a much nicer finish. I think that using large diameter socket head cap screws would be ideal. I have some that would be the right diameter. The catch is that I'd have to drill and tap the holes bigger. Since I only need a little thread I'll have to cut off the screw to fit. Way too much work for my first itteration.

If I were to eye-ball estimate the ID of the small end of the swivel I'm guessing that I only need about 3/32" shim stock. The rubber insert is meant to grab an oval cross section biner...like a Rock O ;)
Just kidding with ya Tommy D. Nothin wrong with it. Just thought you could 'bling' it up a little. :)
"TL...I don't like the term 'ghetto lookin'.." You gotta be kidding me though right?
 
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