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Dogbone rope wrench


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Nothing particularly useful though Ian Flatters likes it with his Lockjack, makes it a touch smoother response on smaller diameter rope.

 

Basically it enables a hitch to function Ddrt style, on a single rope, which would be impossible with only a friction hitch

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So Gordon sent me some new sheaves, (Thanks) and Mike T tried out the device today, climbing on Tachyon which was giving some friction problems with the larger sized sheaves, Mike has been climbing SRT with the ZK1 for a long time now so was a good test pilot for the DB.

 

Normally Mike climbs with a shorter tether than the one I use but he had no problems with the device at all reporting that it was smooth to use with a comfortable amount of friction, it's a neat tidy and clever design as you can see in the picture. Mike was my guinea pig, he survived the day so I had to pay him.

 

I will give it a spin the next time I have something reasonable to climb.

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  • 2 weeks later...

So we had a pretty big tree to take down this week so it gave me the chance to try out the DB, the first day I went with my usual Tachyon but with not my usual Armour Pruss hitch cord, the Tachyon ran well with the smaller sheave, (Gordon, I machined down one of the spares you sent) but I found the AP to be way too grippy configured as a VT and as the Cooper Hitch, I had some FLY to splice for a friend so I had a little climb on it the second day, this ran much better and changing the hitch cord to OP certainly helped.

 

The Dog Bone is very compact with no sloppiness at all and what I love about it, apart from the ease of fixing it on the line, is the fact that it seems to automatically fall into the 'ON' position which is a great peace of mind should you have a little slip.

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