Rig N' Wrench

It's my go to rigging setup until I get into heavy stuff 400 lbs. It is light, I just setup with a strap, and do most of the work - it does reverse the order of groundie and climber a bit, but it speeds up productivity in tight places with fences, lights, water features, plants, etc all I do is wait for the crew to untie - I setup quickly and by the time they return from dragging brush I'm ready to go


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I figured as short as you can just for less bulk. There is too short though. Longer doesn't hurt and there is less friction on return but it is bulkier
 
treebing said:
...do you find the swivel is all that necessary?
Click to expand...

Oh, probably not for a lot of folks. But I'll set the main block and drag the RnW around with me, so the swivels on both of them help keep things aligned. I also have some Onmi-Block 2.0 pulleys I'll use for redirects, so I can pretty much leave the main block set and keep the RnW with me, tie it in close by where I'm cutting. Got a hackberry down the other day without moving the big Omni-Block until the very end.
 
I actually use it as a benefit as a climber. For groundie, the porta or natural crotch is my go to. It speeds everything up and becomes more efficient because it cuts out the need to coordinate the ground guy to the porta wrap etc - cuts out middle man.


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so many pieces of rigging gear coming out right now that add friction to the rigging point. I understand there is an added benefit of making it simple and for working without a dedicated groundie but I was hoping someone would clarify more the advantages in terms of forces by putting friction aloft. I was told it gets rid of any MA on the rigging point but I can't seem to wrap my head around the whole concept.
 
Say the load is 100 lbs.
With a 100% efficient pulley at the crotch. The crotch sees 100 lb from the load side and 100 lbs from the groundie side for a total of 200 lbs. This is mechanical advantage

If there is a rigging wrench up there, the groundie is only holding maybe 50 lbs. There is still 100 lbs on the load side and always will be, but the groundie side is reduced. So the total force on the crotch is 150 instead of 200.
 
JTSpear said:
so many pieces of rigging gear coming out right now that add friction to the rigging point. I understand there is an added benefit of making it simple and for working without a dedicated groundie but I was hoping someone would clarify more the advantages in terms of forces by putting friction aloft. I was told it gets rid of any MA on the rigging point but I can't seem to wrap my head around the whole concept.
Click to expand...
Ha, we are multiplying. Good to see you on the buzz. That thunder sling could be pretty cool.

The rig wrench was a lot of fun to see in action when we used it on the demo tree. Whipple didn't have to work to hard to control the chunks of wood. And we took some descent size pieces after the awards ceremony.
 
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