Hey Eric, the bollard's still doing it's job! I did get all the good out of that 9/16" rope... Good to "see" you too! I didn't get tossed too much by that white oak, as I was only 25' up and it was 32"+ at the stump.
X, I think what is generally referred to as "negative" blocking is pretty...
Tried out Polydyne the other day. Worked quite well. Largest piece was ~1650#, 24" x 8 1/2', white oak. Only allowed to run about a foot, as there was pavement and concrete everywhere below. Four wraps on the bollard, worked like a charm! And very little glazing.
Just out of curiosity, Norm, what would you say is the largest (heaviest) piece you've seen negative blocked? I'd say my biggest has been around 800#. I've rigged out much heavier when static rigging of course, but the negative is where I've had trouble with glazing.
I had a 9/16" Stable Braid...
The reason I think it glazed after the piece was stopped, is because the length of the glaze appears to be about the length of the amount of rope wrapped on the bollard. I had him take three wraps on the larger pieces, and they still gave him a pretty good yank as he stopped them.
Sorry Norm, no pics....I was using 1/2" Stable Braid, a 3/4" ISC (yellow aluminum) block from Bailey's, and a ratcheting bollard I bought from OldOakMan a couple of years ago. When I got down to the biggest pieces (500#-700#), I switched to a 9/16" Stable Braid.
I've wondered if the pieces were...
I have one of the red, ratcheting bollards. No way to "ice" it.
You mention speed of descent being the culprit....one must let the work run on these large chunks. My theory is that when the work runs, the friction creates the instant heat, then the piece is stopped, with the rope under...
While doing a removal on a medium height, fat pine yesterday, it was necessary to negative block the trunk down. My ground guy has only been with me three weeks, and part-time at that. He has used a porty a couple of times, but because some of these chunks were going to be a little large, I...
Alabama Power is pretty good about dropping services, but can be very unpredictable as to their arrival. That's why I have dropped a few myself. Only had to put two back up myself. I usually leave that to them.
I've never encountered enough voltage to feel when disconnecting cable or phone...
At what weight would you switch from a standard 3/4" block to that big boy? The working load of a 3/4" block is well above anything I'd want to rig out of a tree.
I have used two portys several times. The simplest way I've found is to run a 3/4" rope around the trunk three or four times and secure the ends. Then use two shackles to secure the portys to the rope, preferably on different legs, so as to eliminate them running together. If the rope is snug to...
If the fiddle blocks is what you're interested in, they can be acquired much cheaper from Garhauer......
http://garhauermarine.com/catalog_process.cfm?cid=9
http://garhauermarine.com/catalog_process.cfm?cid=5
Both blocks can be had for $140 + shipping. Most tree guys can come up with a rope...
Re: who likes 1/2\" arbor plex for rigging?
I do alot of my rigging old-school. On take-downs, I frequently limb the tree as I climb up, rigging the limbs off themselves and lowering them to the groundies myself. This allows them to deal with the limbs and not have to deal witht the rope. I rig...
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Any clue, 4000 work load. Would that be lifting or just lowering? For the price, it is right even just for lowering, but do you no any one that has one?
Never been lucky enough to use GRCS, but would love to, and would not have a problam trusting it.
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I bought one last...
The discussion of placing one's safety line above or below the block has a long history. I don't even know what's considered "normal" anymore. I place mine ABOVE the sling almost exclusively now, unless there's a reasin to do otherwise. The other day I was blocking down a dead pine tree. Lanyard...