Rig N' Wrench

I think that may be in the future but at the moment if your taking big chunks than your probably going to need more friction than the wrench can provide and will need some sort of trunk friction device. This small version stows easily on the harness and is perfect for everything up to when you want another wrap on the porty. The best thing is the ground can pull! Did I say that already? I seriously beleive this is as big for my riggjng as srt was to my climbing.
 
treebing said:
...if you're taking big chunks, then you're probably going to need more friction...
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A bigger pin in a bigger device would probably be enough to see real benefits... it would still reduce the amount of friction at the basal lowering device significantly. That could have some serious benefits, itself. Reduced stress on the device, less heat, reduced stress on the sling, fewer wraps, etc. and might even let you use a device that normally would be considered marginal with 5/8" rope. I've solved the problem of an effective tether for a large pulley/block, but a larger wrench is in order.
 
I am working on that. Friction with a Yale 16 strand xtc is more than an 11 mm line. I really suggest playing with it. Additional friction can be generated with a little half trunk wrap. I think a wrench at the base of the tree has a lot of potential. My feeling is that the weight of the groundie has a bit to do with it. I am thinking that you could just about equal the go undies weight comfortably, yiu don't want to fly him off the ground. If you cut a 175 lbs piece, I will be yanked off the ground with just a pulley. With the wrench I would be able to stay on the ground.
 
I know that's not scientific at the moment but it's sort of my rule of thumb. Calculating weights of limbs is tricky. I don't suggest cutting the big bushy Austrian pine top on this thing right off the bat.
 
Wouldn't it be great if you could dial in how much weight you want to hold and the auto braking friction device would calculate on the fly so you never saw more than you could handle. Okay maybe I'm just dreaming, lol.
 
combine the burly version with a one way ratcheting pulley. Think of the dawgs on a hand crank winch, the sheave will rotate freely when pulling up the rope, but underload it locks off providing friction not unlike the rigging rings. This could be on the wrench or the pulley.
 
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Rope selection changes the numbers significantly. Escalator is quite stiff and the wrench really adds friction. My other favorite rigging line is 16 strand which also has a lot of friction a skinny kernmaster is not affected by the wrench as much.
 
treebing said:
This put my medium sized removals in hyper drive as far as production goes. Pull aNd drop all day.
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Kevin, say you are taking a medium or small size limb, one which the groundie would just need leather gloves to handle in conjunction with a block up top, one that needs Pull and Drop. With no friction device the limb can fly down quickly and be swung or whipped into place by a good groundie just using the momentum of the limb. If the same limb were to be rigged down using the Rig n Wrench instead of using a block up top, would it come down slowly cuz it is lightweight and hence be more of a pita than with no RnW, or won't the RnW engage as much cuz it is light, so it could still fly down?
 
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