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Zip Line Biners

brendonv

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Mar 6, 2005
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Oxford, Connecticut
I was just watching HGTV as I do every weekend. They had a couple clips of a tree crew zip lining some brush towards the chipper on "Flip That House".

I have a Sycamore removal coming up where it's down in a hole, with the driveway on the higher side. Figured I'd zip some limbs straight to the chipper.

Is there any special biners you guys use when zipping? Do they have to be locking? Have you ever had failure with non-locking (falling off the rope somehow)?
 

rbtree

Climbing Up
Joined
Jun 22, 2005
Messages
1,913
I was just watching HGTV as I do every weekend. They had a couple clips of a tree crew zip lining some brush towards the chipper on "Flip That House".

I have a Sycamore removal coming up where it's down in a hole, with the driveway on the higher side. Figured I'd zip some limbs straight to the chipper.

Is there any special biners you guys use when zipping? Do they have to be locking? Have you ever had failure with non-locking (falling off the rope somehow)?
Never. But I use lockers if the load is heavy or there's something rather valuable below.

I have had a branch come down in such a way that the sling gets caught on the zip line...only takes a bit for it to burn through.
 

sotc

Dormant hero!!
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Dec 6, 2005
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So. Oregon
they make some fancy roller biners but ive used the 5 dollad single locking biners with out any mist haps. i dont speed line very often though
 

SkwerI

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Sep 6, 2006
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central Florida
In years past I bought a bunch of the steel captive eye biners from Sherrill, item #15989. Sherrill calls them the 'slideline' and they are made by Kong. Non locking, keyed gate for no snags and 24kN. I put the webbing slings on them and keep several in my bucket and a couple on my climbing saddle. Dozens of uses including speedlining.

Let's see if this works-
 

No_Bivy

Treehouser
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Sep 2, 2006
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I use auto lock steel, with 1 inch nylon slings 4ft long. Then I use a blue bandit rubber thingy to make it captive
 

inztrees

inzhouse
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Dec 25, 2006
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NH
I use non locking and rope sanps for slings I get 20 ft of webing from EMS and tye a water knot
 
B

Bounce

Guest
I use the same biners too. I like knowing that they won't get sideloaded no matter how I dump tops into it. Never had one come open, even though they aren't locking.
 

NickfromWI

King of Splices
Joined
Mar 30, 2005
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Snowless California
The first time I used one of those 'biners I had doubled up a 9/16" webbing sling and girth hitched it where it was supposed to go. The 'biner was loaded with a pretty heavy branch and the retaining bar cut right into the webbing.

I stopped using it then.

I'm assuming no one else has experienced this because in the years since that has happened I never heard someone mention it.

love
nick
 

SkwerI

Treehouser
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central Florida
Sounds like operator error, Nick. When the sling is properly girth hitched on the carabiner it hardly touches the retaining bar, and the retaining bar should never carry any direct load.
 

wiley_p

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Mar 20, 2005
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West Coast
Trango wire gates, 4.95 each. Inexpensive, plenty strong for the application, (heavy things get clipped on a pulley and belayed) I sew the sling snug with a few stitches. Never had a problem been going that way for a while.
 
R

RIVERRAT

Guest
Trango wire gates, 4.95 each. Inexpensive, plenty strong for the application, (heavy things get clipped on a pulley and belayed) I sew the sling snug with a few stitches. Never had a problem been going that way for a while.
Wiley, where ya finding them for that price?
 
M

Mr. Sir

Guest
I just did a quick search and the best price I could find for the Trango is $8.95, but several sites said they were no longer available. Still a good price if you can find them.
 

wiley_p

Climbing Up
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Mar 20, 2005
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West Coast
Maybe I should go down to the store tomorrow, I just got done paying an what I thought was an insane price for some 5.56 ammo. Lead is up almost double, coppers up, hell with our luck I'm sure aluminum is up as well.
 

brendonv

Tree Hugger
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Mar 6, 2005
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Location
Oxford, Connecticut
  • Thread Starter Thread Starter
  • #23
For an extra $1.05, is there any reasons why these biners wouldn't bee good for speedlining as opposed to the ones Skwerl posted? They are 4oz heavier but double the strength. I just remembered I have about 5-6 of them hanging around in a bag somewhere from e-bay. I have the auto lock and the screw lock.
 

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SkwerI

Treehouser
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Sep 6, 2006
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central Florida
You can use anything you like, I just like those Kong biners because of the keyed gate (no snags) and the corner trap to keep the sling in place. And if you're speedlining then I highly doubt you'll ever have more than a 500-600 lb chunk anyway unless you're rigging some insane chit. Speedlining can put some tremendous loads on your anchor points so that will limit the size of your cuts. A 5000 lb biner is more than enough for a speedline clip.
 

brendonv

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Mar 6, 2005
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Location
Oxford, Connecticut
  • Thread Starter Thread Starter
  • #25
Cool, I do understand that the loads are pretty crazy when lines are setup like so. I guess I am thinking the biners above would be more multi-use than the others for almost the same coin.
 
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