Friction device below the hitch

surveyor

surveyor

Been here much more than a while
Location
NC
I have been working also on a friction device for use below the hitch with SRT. This prototype, half Offset Ascending Rack seems to be just the ticket. It takes nearly all the weight on descent, which allows the hitch to serve as backup. It is about 2 1/2" long overall.


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Ok, I just made the spine longer so that an attach point was added to the top of the "Bulldog" and now it works on both SRT and DRT. It is a hybrid system and the hitch needs to be tied so that it only holds part of the friction. When set up this way it releases (very smoothly) on DRT by pulling down on the bottom arm only, and letting the top arm and hitch slip. The top arm takes most of the friction. When set up identically on SRT,but unclipped from the top attach point, it releases by pulling down on the hitch only, and letting the arms of the Bulldog do most of the friction work.

Edit: I see it works fine on a Doubled rope without a hitch at all above it.

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I think that is really cool! I tend to burn up my hitches when I use my homemade pulleysaver and i think this would solve that problem (or i could go slower, but what fun is that?) Good idea.
 
Surveyor? May I point out that your photo shows two non locking carabiners and a standing bowline in life support with your DdRT system. You may just be setting up a quick example. Nice system too but my only concern would be less experienced climbers seeing this and believing it to be safe. Thanks for the photos.
 
I thought the full OAR had great potential. rode a lot smoother that the UNI for descent on SRT. would really like to try the below the hitch one. Does the hitch push down on the OAR to slightly engage it? is it a one handed motion?
 
This Bulldog OAR releases even smoother than the compact OAR, because of the larger dia. pin and rollers. It is more sensitive to the hitch when used with a hitch in this hybrid combo. That is to say, the mechanics of the RW above the hitch is better. I would say you have to dial this in more to get it to function properly on SRT.
 
I also noticed the bowline with out a yosemite tie off..

I use a double fisherman's loop with a three inch tail. always..good one way termination.

and non locking biners..climb like your life depends on it.
 
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Surveyor? May I point out that your photo shows two non locking carabiners and a standing bowline in life support with your DdRT system. You may just be setting up a quick example. Nice system too but my only concern would be less experienced climbers seeing this and believing it to be safe. Thanks for the photos.

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haha if your climbing trees and think that thats safe, you shouldent be climbing at all. i agree with you kristian.

are those the $2 lows special biners ;)
 
Easy does it Surveyor has been working hard creating some interesting rope tools. They are getting better and better has he works through different designs . But yes... locking carabiners and cinching rope terminations are a smart way to climb ;-)
-AJ
 
I agree with Moss seeems to me that surveyor has been a type of innovator which takes a lot of dedication. So let's cut him some slack and when pointing out someone's lack of safety protocol we do it in a respectful way not with sarcasm as if the guy is a kid. Paul.
Ps I know how important safety is I practice it each day. Remember nobody is perfect.
 
Just to be clear, I am a registered land surveyor by profession and not an arborist. At this point I have no arborist gear at all except for one piece of gear Tom D. sent me for an idea I have. I do not mind safety issues being pointed out, please continue. I experiment, but do not get far off the ground. Perhaps if business picks back up I will get some gear.

Edit: I also have a Rope Wrench Kevin let me have and a nifty NZ throw bag Bob sent me, Thanks to all.

I am getting mixed results with the hybrid Bulldog OAR/ hitch combo, it is either creeping or seizing. I do believe the bulldog OAR has potential, especially with three arms rather than two and when used on a doubled rope without a hitch at all.
 
Here is the Dogbone with a cam incorporated into the top end. It works as a grip when weighted, but has to be completly unweighted in order to redirect the rope out of the top cam in order to be used as a rope wrench.

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Funny thing Surveyor I studied land surveying at university in Toronto Canada, but I am now a arborist in Barbados, I prefer the action. Get yourself in the trees bro even for recreation. Keeps you fit and you will then get a better feel for those inventions of yours I am liking the last pic but I am still a minimalist wouuld'nt use it in DdRT, my Hitchclimber and VT is very smooth even on fast descents. Just means more prussic buying, that said I have many sitting in a box, tree work does pay well. I love it dude.Paul basking in the sunshine capital where the beaches rule.
 
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