gorman
Addicted to ArboristSite
I use steel carabiners to zip stuff down when I can just let it fly. But does this wear on the biner? How does this stand the test of time?
Question on speed lining
- Thread starter gorman
- Start date
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ducaticorse
Addicted to ArboristSite
No worries, good to go.
Jeff
Jeff
2treeornot2tree
Dont cry, just do it
You will start to melt the outer sheath of the rope long before you wear out a steel carabiner.
How long is the length of your speedline?
Jeff
Jeff
gorman
Addicted to ArboristSite
Maybe 75 feet. I just didn't know if I should keep my speedlining binerz separate from my rigging biners.
Beat me to it. When the pieces get big enough to switch from biners to pulleys, It 's the rope I'm worried about, not tue biners.
2treeornot2tree
Dont cry, just do it
I have a couple of kermantle rescue ropes that I use for speed lines. On kermantle ropes the core hokds all the load and the sheath just keeps the core clean and abrasion free. They are stiffer but hold up much much better.
My longest was in Lake Arrowhead,i 2003
Close to 600 feet.
No footprints in the creek.
Jeff
imagineero
Addicted to ArboristSite
People have already given some pretty good advice. I wouldn't be concerned, but if you are then go ahead and put one aside, or a handful for that matter; steel biners are so cheap. I use steel biners for light rigging and they pretty much last forever. For my speed lining setup I don't even use screwgates, I use aluminum snaplinks. They're rated to 22kn, and only cost a few bucks each. I keep about a dozen, and I put them on tied webbing slings which I make about 36". You can do a dozen hits that way before you need anything sent back up.
Shaun
Shaun
beastmaster
Addicted to ArboristSite
I use the alumnum snaplinks also and have never seen any wear problems with them. If Im skidding some big stuff I'll use a clevis and rope. I have some 7/8in. three strand with braided loops on one end just for that purpose.
ChockFull
ArboristSite Lurker
Anybody ever use a wiregate revolver dmm? I was considering using these for small branches for less friction. I use a sling with a steel carabiner if I'm just doing a couple instead of setting up a block and haul back line. Sometimes if the branches are too light they barely make it down the line. Not sure if the heat would kill the bushing on the revolver.
Reg
ArboristSite Operative
Steel Biners here. We do lots of ziplining and I feel much better having a positive lock than using an alu snap-gate....which get red hot also when you're rigging heavy limbs. Another thing worth mentioning is, assuming you have the air-space, longer slings are safer. A short sling can bring the wood too close to the line itself....and if you get an unlucky flip or swing can bring the load to an unexpected halt in mid flight. Not good on a dead or fragile tree. Here's a big Grand Fir we did last year, about 140. Use HD setting: Lagoon Rd zipline. - YouTube
beastmaster
Addicted to ArboristSite
Good point, I had one flip once and the nylon sling went over the rope and it melted through almost instantly. Lucky for me the piece had already passed what we were protecting. With that being said, you have to factor in inertia some times depending on your angle and fall. A big piece can pull side ways pretty good if started at an angle to the line.
