Compact Bulldog Bone

[oldoakman]

which paul?

I've not heard of the dynamic cam bdb, what's up with that?

I would like to know a little more also. Been under a rock lately.

 

[Muggs]

I think it's just the elongated bollard version, it rotates on its own

 

[surveyor]

Yes, the elongated bollard swivels in place on rope and has 2 wear faces (it is non adjustable). Muggs demonstrates nicely how the Bone can function MRS. It can help to have a monkey paw type attachment on your bridge to terminate the down line, to give a bit of separation. I have had success also making it self tending on ascent , by attaching a rather loose girth hitched lead to the down line, attached to the top tending point. It has to be a bit slack to allow the Bone to engage.

 

[oceans]

Yes, the elongated bollard swivels in place on rope and has 2 wear faces (it is non adjustable). Muggs demonstrates nicely how the Bone can function MRS. It can help to have a monkey paw type attachment on your bridge to terminate the down line, to give a bit of separation. I have had success also making it self tending on ascent , by attaching a rather loose girth hitched lead to the down line, attached to the top tending point. It has to be a bit slack to allow the Bone to engage.

Yes, I’ve used one of my wife’s elastic hair ties for this. A simple girth around the working end and clip to the Bone. Good to go, just not the most robust, long term piece of kit. I’ve been meaning to make something a bit nicer, just haven’t been able to make the time.

 

[Treetopflyer]

which paul?

I've not heard of the dynamic cam bdb, what's up with that?

@SoftBankHawks

 

[Lignotuber]

which paul?

I've not heard of the dynamic cam bdb, what's up with that?

Yes, I’ve used one of my wife’s elastic hair ties for this. A simple girth around the working end and clip to the Bone. Good to go, just not the most robust, long term piece of kit. I’ve been meaning to make something a bit nicer, just haven’t been able to make the time.

Are there any photos of what you guys are describing? Not finding in the search, trying to visualize it.

 

[Treetopflyer]

Gordon has a video somewhere in this thread look near beginning edit; see post #28

 

[Treetopflyer]

Some ol multi swivel vector bone pics from 2016ish i found lol

 

[data farm 26]

niiice, time capsule, sweet arrow frog.

 

[SaintRegime]

These look great, is there a way to purchase one?
didn't see any instructions to in the last 5 pages.

(The Bulldog Bone, I mean.)

 

[rico]

Mu

Some ol multi swivel vector bone pics from 2016ish i found lolView attachment 89630View attachment 89631View attachment 89632

must resist.

 

[Barc Buster]

These look great, is there a way to purchase one?
didn't see any instructions to in the last 5 pages.

(The Bulldog Bone, I mean.)

Send a private message to @surveyor and he will get you squared away. These devices are bomber!

 

[Muggs]

Tag Team

 

[oceans]

View attachment 89870
Tag Team

Forgive me if you already know, or if it’s updated, or whatever…watch that swivel on your bridge, brother. I rocked the nexus for a spell as well and really loved it. Ended up going to an earlier DMM design on one saddle and trying out a Hydra for size on another.

 

[Muggs]

Thanks Eric, this one just got back from extended vacation at DMM. I usually have the gyro on my bridge but I switched it out and put it directly on my bdb as an experiment to see if it would help with doubled rope setups. It doesn't. Going to switch back. Love the gyro on the bridge....

 

[oceans]

Thanks Eric, this one just got back from extended vacation at DMM. I usually have the gyro on my bridge but I switched it out and put it directly on my bdb as an experiment to see if it would help with doubled rope setups. It doesn't. Going to switch back. Love the gyro on the bridge....

Makes sense to give that a try. I like a DMM Rhino for doubled because the horn keeps the bone from falling out of place and potentially side loading while advancing. Still haven’t used the Hydra yet. Just got it. Maybe tomorrow…

 

[data farm 26]

Help on the way!

Was a bit overdue...




Glad to have a rebuilt bone though.

 

[Friedrich]

levi, the spine does‘nt look too bad to me. i tend to wear out at least two bollards up top with one spine but might be reckless?

 

[data farm 26]

I really am not sure but decided to rebuild it all, new friction links too. Feels great!

 

[surveyor]

The symmetrical spine is reversible, when one end wears out just take it apart and swap ends. I do groove the one end slightly as you see, which I believe eases the passage of the rope on ascent, and starts the wear pattern centered on the spine.