Compact Bulldog Bone

Tyler, the hole for the tether is 5/16".

Paul I am quite sure the swivel could be added using a size 60 heavy series cottered link. In fact I made one today, sans the swivel link. The UK user had to bore out the hole on his to fit on the size 80 link.
 
Tomorrow I'm heading to the Recreational Tree Climbing Rendezvous in Missouri. On Friday I'm teaching an SRT class. I hope to be able to borrow a swivel from someone to change out the eye piece on the original. The ART one is nice though. Hubert does make wonderful jewelry-quality kit.
 
Guys, I don't want to rain on any good ideas, but I honestly feel an integrated swivel isn't really needed unless a climber really wants to connect their carabiner directly to their bridge.

Maybe the theory is to reduce components, but my thought is that a swivel located on your bridge will open up more options for positioning since the swivel eyes will be larger than those of an ART style unit. For a swivel to be ultimately effective, it should be able to accept multiple systems within a single point of attachment.

Hope it makes sense. The Bone is pretty rad just as it is.
 
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I agree Eric : )
The bone is rad.
and very stout.
For those who may want a swivel at the attach point, I should be able to install a Rock Exotica nano swivel there, which has a nice large eye. The Nano swivel would be heavier and longer than the regular eye the Bone comes with and of course more expensive.
 
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There is a large eye on the Nano, but will it be connected to the bridge? If a climber wants to benefit from the swivel and work position with two points of attachment in the upper eye, leaving the lower eye free to turn, would that be possible in the setup being suggested in the posts above?
 
Not sure if I am qualified to answer your question Eric. But it is my thought that the small eye of the nano would be connected directly to the pin in the lower arm of the Bulldog Bone and the large eye could be attached via carabiner to the bridge ring. I suppose if you untied the bridge you could connect the Nano directly to the bridge rope, but that would seem to limit your options with DdRT.
 
macswan said:
Here is a little vid showing the BDB in "action"
Click to expand...
Mac, I assume that's your kid in the background saying, "Dragon, Dragon, Dragon"? Is that an arpeggiating lyric from one of your death metal tunes? :)

BTW, I got my bulldog bone in the mail today. Excited to team it up with my Yoyo SAKA and see how she rolls tomorrow on a good ascent. I'll give a report when I've had some time to test it all out.
 
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surveyor said:
Not sure if I am qualified to answer your question Eric. But it is my thought that the small eye of the nano would be connected directly to the pin in the lower arm of the Bulldog Bone and the large eye could be attached via carabiner to the bridge ring. I suppose if you untied the bridge you could connect the Nano directly to the bridge rope, but that would seem to limit your options with DdRT.
Click to expand...
You've described the interface that I imagine. Point just being that if another carabiner cannot be installed in the same eye that is directly connected to the Bone, much of the benefit of the swivel is lost. IMHO, best to just put a swivel on the saddle bridge (instead of a ring) and connect the "stock" Bone to that.
 
TreeLogic said:
Mac, I assume that's your kid in the background saying, "Dragon, Dragon, Dragon"? Is that an arpeggiating lyric from one of your death metal tunes? :)

BTW, I got my bulldog bone in the mail today. Excited to team it up with my Yoyo SAKA and see how she rolls tomorrow on a good ascent. I'll give a report when I've had some time to test it all out.
Click to expand...
Somebody's kid, not sure whose. Out in the courtyard of the apt building. My kids do like metal though
 
So, I'm taking lunch, having spent the morning in a massive 5 stemmed Tillia and flying the Bone. I have this thing pretty dialed in on 11.7 line. I'm just sayin', the Rope Runner has some pretty stiff competition.

Ascent is real smooth, and smooth enough that above +/- 30', you can put in your chest tether and free climb as the Bone just gobbles up slack.

Redirecting is an absolute dream with the ease of on/off midline attachment. The Bone never has to leave the bridge, and there are exactly zero pieces to accidentally drop.

Descent is smooth as glass and I've finally found the easiest way to operate the top bollard arms. By choosing your left or right hand, just pivot the unit to align with either hand (you'll want a bridge swivel for this) so that your thumb pulls down on the arms. You get good leverage and feathered control with that technique, you just want to ensure your tail isn't dragging behind with too much friction so it stays fair through the lower arms.

You can pretty easily get your gloves stuck in this thing, but no more so than the beloved RR.

Very nice work, Gordon. My hat is off to you, and Kevin as well. Thanks for all your efforts over the years in creating a sweet mechanical SRT multiscender. Let the games begin!
 
Thanks Eric! The Bone will creep on certain ropes, and develops too much grip with Vortex with the standard bollard installed. However I can provide a smaller bollard, or the bollard can be removed entirely to lessen the grip. Moving forward I am offering the Bone with rust resistant links as an option. They are called Neptune Links and here is the manufactures description:
NEPTUNE® chain resists corrosion when exposed to harsh outdoor environments, including seawater. The exclusive NEPTUNE surface treatment process gives the chain its unique matte grey color and provides a protective finish that is more corrosion resistant than Nickel-Plated chains. NEPTUNE chain has the same high maximum allowable load as our standard carbon steel roller chain.
 
Pretty sure I have one of these. Think it can just replace the ring on my sequoia bridge? Or is that asking for trouble?

620.jpg
 
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