Dogbone rope wrench

[ssurveyor]

Hello all. Here is a picture of my handmade "Dogbone" rope wrench. It uses ANSI size 80 roller chain master links shown. The 5/16" high strength steel pin can be swiveled to slip on the rope mid-line, around the pin and through the aluminum (alloy 6061 T6) side plates. where it is effectively trapped until manipulated off the rope. It has a 3/4" dia. roller at the bottom friction point and develops plenty of friction above the hitch when tethered at the outboard tether point. It can also be tethered at the inboard tether point for use on a doubled rope with pulley above, where it develops less friction, so that the hitch bears only a part of the friction when released. It weighs about 5 1/2 oz. and is 3 1/2 " long overall. It advances smoothly, yet tends to "stick" on the line, and torques readily.

 

[Tree Pig]

wow how creative and ingenious... oh wait you just copied someones work... well at least you gave it an original name... ah crap nope thats copied too. Your profile lists you as an inventor, what did you invent? Creative ways to copy others work?

 

[RacerX]

wow how creative and ingenious... oh wait you just copied someones work... well at least you gave it an original name... ah crap nope thats copied too. Your profile lists you as an inventor, what did you invent? Creative ways to copy others work?

In his defense he said that it was handmade not that he invented it. :msp_smile:

 

[Tree Pig]

In his defense he said that it was handmade not that he invented it. :msp_smile:

true true... sometimes you just get caught in a mood I guess.

 

[husabud]

Looks interesting. Send me one and I will let you know how I like it.

 

[DangerTree]

Hello all. Here is a picture of my handmade "Dogbone" rope wrench. It uses ANSI size 80 roller chain master links shown. The 5/16" high strength steel pin can be swiveled to slip on the rope mid-line, around the pin and through the aluminum (alloy 6061 T6) side plates. where it is effectively trapped until manipulated off the rope. It has a 3/4" dia. roller at the bottom friction point and develops plenty of friction above the hitch when tethered at the outboard tether point. It can also be tethered at the inboard tether point for use on a doubled rope with pulley above, where it develops less friction, so that the hitch bears only a part of the friction when released. It weighs about 5 1/2 oz. and is 3 1/2 " long overall. It advances smoothly, yet tends to "stick" on the line, and torques readily.

You might want to replace that white nylon boat rope with some Spectra cord or something that is scary lookin'. But nice job on the device I would be interested in flinging it around myself. I use a Solo Aider which is very similar to that but is intended for aid climbing not tree work. I do use it in broad trees on occasion though as it's super for a safety rigged high when you need to run out branches and things. I like walking out on thin branches with the flip line around the branch then you suck up your weight with the Solo aider and it lifts the branch as you walk out. Super effective leaning off one side and digging in a spur you can defy graviton.