BuckBlocks Rigging System

The one from the picture in norms post is Amsteel Blue, @ 3/8 thats 19k lbs MBS, so with your rigging SF of 5:1 thats about 1800lb working load, including any shock load, seeing as the block takes twice the load (1800x2=3600 --- 3600x5 =~ 18000) So maybe 1875ish

If it is 1/2" amsteel, if memory serves thats around 27k lbs mbs, i could be wrong on that one, might want to look it up.
 
SF 5:1 applies only for hardware. On ropes you have to go for a SF 10:1 This has to do with the cycles to failure. Top end forces create a very negative effect on the lifespan of ropes. And whenever there is one thing that I definitively don't want to fail, than that's my rigging TIP.
 
Walter,

I have used both the climbing version and the rigging version. Both work very well as advertised. The rare earth magnets snap together and with a line through I have never seen then separate under load.

In my experience the rigging set up is more practical for crews that do not climb a lot. They can set a block high with minimal fuss and not have to worry about 2:1 loading on tthe tie in point. Since typically the branch unions are large the bulkyness does not come in to play.

I usually find it easier to climb and set a retrievable system. Then I climb a lot so it's no big deal. But for some crews it would be the bigger challenge.

A SWL is of course a concern and any tool, hardware or cordage should be used with one in mind. I never had any problem loading a rigging buck block with a fairly heavy static load. The Amsteel is in basket configuration. You do have to be aware of it's low abrasion point and the block shifting as a load is manuvoured. Perhaps a sheath would be in order. I worry more about the tree than the hardware I instal.

Tony
 
That's right Tony. In trees that should stay unharmed it's probably better to climb in and tie the rigging block in instead of rubbing the crotch with a FS style device.

I'm also a climber, but I only climb what I need to. So when there is the opportunity to skip the climbing by using a smart device like this I am the first to keep my feet to the ground.

I'm convinced and will search for a company here in Holland that sells the BuckBlock.
 
I am with you. Sometimes setting from the ground is great sometimes just not worth the trouble. Where the buck block came in handy was when I was already in a tree, but wanted another high block in another tree. The ground crew handled it well with a throw line and big shot!

If you can't find a distributor, PM me we can figure something out;) Get around that VAT!

Tony
 
http://youtu.be/tz9fNjSqwdA

I have been using this setup. We will set this in a tall tree and use the GRCS to pick a smaller tree beneath it and then pull it into the chipper with self capturing MA.

Ive heard all about the bend radius, but it is a 1/2" ring and if you are super worried about it use two. I dont use it for negative blocking or any real shock loading, as it is set remotely its always above you. If you need to negative block you can just set a normal block.

The rigging ring is only $14 and you likely already have a block and a loop sling, it doesnt need to be a loopie or adjustable at all for that matter.

I have been using it a lot lately and it works well as long as you select and isolate a good crotch. Remember its bluky so you want a wider angle crotch to make retrieval easy.
 
I sometimes use a similar set up but what bugs me is that there is no pulley on one side. I hate the heat build up in that too small bend ratio for my ropes.

Tony, thanks for the suggested help. I don't think getting it here is a problem. Buckingham is still selling gear over here (I'm a big fan of their mesh rope bags that seemingly last for ever) so a Buckblock can't really be a problem with a new shipment of supplies.
 
Internal damage in a failing rope can be a lotta coin too!
wink.gif
 
I would love the buck blocks. The leather tube cambium saver works really well as well for remote retrievable rigging solutions.
 
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