Compact Bulldog Bone

Ive found that attaching a tether between the top link and the upper-arm friction link is better than attaching it to the top link.

It provides optimal tending, allows for a shorter tether and is less prone to slipping.

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Those of you wanting to try this before drilling any holes could do something like this.
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Lifting the upper arms with a tether that is right in front of the pivot link, as suggested by treegungfu, works extremely well on mine. This is definitely worth trying.
 
Those of you wanting to try this before drilling any holes could do something like this.
View attachment 29401

Lifting the upper arms with a tether that is right in front of the pivot link, as suggested by treegungfu, works extremely well on mine. This is definitely worth trying.
With that style tending technique, you could drill a hole < 2mm at the lower edge of each side, then pass a throwline through each hole (from inside to out) and keep in place with a stopper knot...like a little TreeMOTION bridge coming out of the top arms and passing over the link.
 
With that style tending technique, you could drill a hole < 2mm at the lower edge of each side, then pass a throwline through each hole (from inside to out) and keep in place with a stopper knot...like a little TreeMOTION bridge coming out of the top arms and passing over the link.
I feel like if you do that with a bungee your all set. The bungee on mine doesn't even stretch during ascent cause the bone tends so easy , but I just feel that little stretch could make it a bit safer as to let bone engage still if you went limp. Maybe I'm wrong . I forgot to try an incapacitated test ,but today was my reminder.
 
I feel like if you do that with a bungee your all set. The bungee on mine doesn't even stretch during ascent cause the bone tends so easy , but I just feel that little stretch could make it a bit safer as to let bone engage still if you went limp. Maybe I'm wrong . I forgot to try an incapacitated test ,but today was my reminder.
I'll be doing the drill mod for sure, along with trying the "Help me!" test.
 
With that style tending technique, you could drill a hole < 2mm at the lower edge of each side, then pass a throwline through each hole (from inside to out) and keep in place with a stopper knot...like a little TreeMOTION bridge coming out of the top arms and passing over the link.
An afterthought...there may need to be stopper knots on both the inside and the outside of each arm (total of four knots) to keep the mini bridge from falling inside and out of reach when not in use,
 
So...... today I ran my BDB with an old hank of poison ivy. All my normal "go to" ropes were at home as I have been rec climbing a lot lately. I have kept the bone in the same configuration it came in. 5/8 bollard right? It ran great with my tachyon, gret with my new luna (11.7 yale) but on my old poison ivy (11.7 same thing!!!) today it was creeping. BAD. not alarming but steady rope movement. So I need the 3/4 with yale DB's? Anyone else had this experience? I was climbing out of the bucket today so it was all downhill from there! -BEN
 
Poison Ivy has always been a very challenging rope to grip with any mechanical device I have made. I think because it is a very supple rope and more easily compressed than other types of rope.
 
So...... today I ran my BDB with an old hank of poison ivy. All my normal "go to" ropes were at home as I have been rec climbing a lot lately. I have kept the bone in the same configuration it came in. 5/8 bollard right? It ran great with my tachyon, gret with my new luna (11.7 yale) but on my old poison ivy (11.7 same thing!!!) today it was creeping. BAD. not alarming but steady rope movement. So I need the 3/4 with yale DB's? Anyone else had this experience? I was climbing out of the bucket today so it was all downhill from there! -BEN
I've gone to the 3/4" bollard on both units and it works well enough (in descending order of performance) on anything from 7/16" KMIII, 11.5mm Tachyon, and 11.5mm Platinum.

Right now I have a love/not-love relationship with 7/16" KMIII. It works so well but is just a bit too thin for my grip. Tachyon is such a close second, but lately I've been trying to mirror ropes and I don't have enough Tachyon to do that so I fly the KMIII.
 
So...... today I ran my BDB with an old hank of poison ivy. All my normal "go to" ropes were at home as I have been rec climbing a lot lately. I have kept the bone in the same configuration it came in. 5/8 bollard right? It ran great with my tachyon, gret with my new luna (11.7 yale) but on my old poison ivy (11.7 same thing!!!) today it was creeping. BAD. not alarming but steady rope movement. So I need the 3/4 with yale DB's? Anyone else had this experience? I was climbing out of the bucket today so it was all downhill from there! -BEN
I've had that experience on yale 11.7 double braids I've tried , even with the 3/4 bollard. Surveyor nailed it saying " it is a very supple rope and is more easily compressed than other ropes."That's my take on the 11.7$ as well . For rope hitch performance its excellent. Mechanical hitch performance its not . The creep did only happen rarely at first and became more pronounced once I was using the same rope more often . I believe oceans had stated about shaking the hank out flipping sides helped . Which it did for me a little, but still happened on occasion , so I'm running tachyon 5/8 bollard now . Its the best line all around for the bdb that I've tried. Even though the diameter is a bit thinner, not really noticeable to me , The firmer character sets it apart and being on the 5/8 bollard with it tends like a dream. With a monkeys fist on tail and tender hooked up the line falls right through basically from the ground with it . Just shortening the bridge and I can hand over hand right up. The bone is one bad pup!
 
I actually have two hanks of Tachyon. I'll switch to that and try it later today. I'll keep the 5/8 in for now and see how it does. When I first was using the bone it was on Luna but it was brand new rope. The poison Ivy is way old and well used. I'll report back later.... -BEN
 
I actually have two hanks of Tachyon. I'll switch to that and try it later today. I'll keep the 5/8 in for now and see how it does. When I first was using the bone it was on Luna but it was brand new rope. The poison Ivy is way old and well used. I'll report back later.... -BEN
http://www.treebuzz.com/forum/threads/compact-bulldog-bone.28246/page-6
You'll see in page 6 of this thread I had the same trouble with older Luna and Tropical Ivy. Then tried Tachyon and with the 5/8 bollard it's by far my favorite. Of course there's the bounce factor but it hasn't bothered me too much yet. Cougar works well with the 3/4 bollard.
 
Luna has not been very good for me either. Though I really like the low stretch ropes. Was thinking about Cougar or Imori. Tree gear truly is a bit addicting. It is worth the money to me to keep the body comfortable, mind confident and efficient. My wallet does not like this. It frowns upon me in general.
 
Luna has not been very good for me either. Though I really like the low stretch ropes. Was thinking about Cougar or Imori. Tree gear truly is a bit addicting. It is worth the money to me to keep the body comfortable, mind confident and efficient. My wallet does not like this. It frowns upon me in general.
Mac can tell us best about Imori. He was running the BDB full time on Imori in the beginning I believe, and still may be.
 

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