Compact Bulldog Bone

[Worthaug]

No more eye boning for me since I got my Protos. Just tree boning.

Perv

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[TreeLogic]

I ask cause there's a logical cool cat on here that did get boned in the face.

Yes it's true. Took a bone to the upper lip.

 

[surveyor]

Drumbo, It is gratifying to hear that you like the Bulldog Bone and that it is increasing your productivity, Thank you for your enthusiastic feedback.

 

[Richard Mumford-yoyoman]

No spring, no bigtop.

 

[oceans]

No spring, no bigtop.

You could make that almost 2" shorter by using an endless loop rather than an eye to eye. Keep the stitched union oriented on one of the vertical outer bars of the Klemheist and find just the right length so a tiny bight remains at the bottom to attach to the Bone.

 

[oceans]

Maybe even sacrifice a spine by shortening it and re-drilling for the Link.

 

[DSMc]

Hmmm, looks like a big step in the wrong direction.

 

[surveyor]

I have tested both the OAR and the Bone rigged with a hitch, and with some fiddling it works so-so. The HH is king of the Hybrid.
As to why the Bone engages with out a spring, I think it has mostly to do with the correct bollard for the size of rope. There needs to be a bit of friction on the rope.
Also when the top arm is fully collapsed the top and bottom links are in slight opposition, so that a bit of a bend remains in the rope, which in itself acts as a sort of spring,
also since the teardrop is offset the spine, it tends to tip the Bone when weighted causing a tension in the rope.

 

[surveyor]

There is another Hybrid system out there that I made. Tony was kind enough to make a video of my hitch dependent Pulley/ Rack with hitch climber pulley, back in April of 2012. This was well before the zig-zag.

 

[Richard Mumford-yoyoman]

Please don't misinterpret my tone, the BDB is a great and innovative device, I own 2. Used with understanding, a very safe device, although I would say the same with every device.

 

[TimBr]

I have tested both the OAR and the Bone rigged with a hitch, and with some fiddling it works so-so. The HH is king of the Hybrid.
As to why the Bone engages with out a spring, I think it has mostly to do with the correct bollard for the size of rope. There needs to be a bit of friction on the rope.
Also when the top arm is fully collapsed the top and bottom links are in slight opposition, so that a bit of a bend remains in the rope, which in itself acts as a sort of spring,
also since the teardrop is offset the spine, it tends to tip the Bone when weighted causing a tension in the rope.

Surveyor, thanks a lot for this answer to a question I posed in a different thread. I didn't mean to try to hijack that thread. Really thorough and well thought out answer, and I greatly appreciate it.

Tim

 

[knothead]

There is another Hybrid system out there that I made. Tony was kind enough to make a video of my hitch dependent Pulley/ Rack with hitch climber pulley, back in April of 2012. This was well before the zig-zag.

Hmmm. Wonder where Petzl got the idea for the ZZ?

 

[surveyor]

The ZZ was patented about 4 months before this video, but there had been no public example that I am aware of until about a year later, we each had no knowledge of the others efforts.

 

[Richard Mumford-yoyoman]

The ZZ was patented about 4 months before this video, but there had been no public example that I am aware of until about a year later, we each had no knowledge of the others efforts.

Unfortunately now days its who gets to the patent office first not whether or not you had knowlege of the others activities. This assumes of course that you had proceeded with your prior design and come up with something that was almost identical to the Zigzag.
It would have been a bummer to see the zigzag prevail when you obviously would have come up with something much better.

 

[Ryan Keats]

I received my bone in the mail last week. Unfortunately, the only time off I've had to climb on it, there has been torrential rain. It's torturous.

It looks great, thanks so much @surveyor !

 

[John_KAYS]

Just in case you didn't know....
My Bulldog Bone has a little brother...and sister.

I'll quote myself from another thread:

I am really, really liking this lanyard adjuster. I have some video footage that I have put together to show off the BOLA...nothing special. It is just little clips that demonstrate the action...really smooth.

I don't have a gopro, so I was only using one hand...so excuse me for not looking very adept at operating my systems. I am finding more and more I like about this adjuster...the one thing it doesn't do is single line, but that's what its big brother is for.
PROS:
- One handed adjustment even while loaded
- Compact, fits well in hand
- Simple
- Smooth tending
- Grabs right away
- Single point switches seamlessly to tending
- Fixed or Swivel eye (Nano)
- Looks great coupled with the BDB!
*I haven't tried it in sap, but I am betting it would be worlds better than a hitch.

CONS:
- Not midline attachable (but for a lanyard adjuster that's just fine)
- Works on few lines/purpose built for 7/16 KM III (but for a lanyard adjuster that's just fine)
- Not for single line (but for a lanyard adjuster that's just fine)


Feel free to skip around and just watch what you want...I just wanted to get some footage out there so you all can see this thing move.

 

[macswan]

My bulldog bone brings all the boys to the yard.

 

[RajElectric]

Is it better than yours?

 

[macswan]

Damn right it's better than yours.

I can teach you but I'd have to charge.

 

[RajElectric]

La da da daa da la da daa da da