The Tree House loves TreeStuff!

ISC Pulley

lumberjack

Young man on the go
Joined
Mar 6, 2005
Messages
9,049
Location
Mississippi
My first thought is why?

Next up, an overhand knot is about the most inefficient choice.

Lastly, why?
 

brendonv

Tree Hugger
Joined
Mar 6, 2005
Messages
7,156
Location
Oxford, Connecticut
  • Thread Starter Thread Starter
  • #6
I am just referring to how the prusik is slipped through the pulley, a overhand knot is then tied and acts as the termination.

I don't own this pulley, or plan on purchasing, it just looks silly to me.
 
T

top hopper

Guest
Im assuming the tech cord terminated with the over hand knot is tied into a friction hitch above?
 

NickfromWI

King of Splices
Joined
Mar 30, 2005
Messages
4,996
Location
Snowless California
If that were mine, I'd swap the overhand for a backed up slip knot. It'd be much easier to untie.

Too bad you couldn't do this with a closed friction hitch.

love
nick
 

SkwerI

Treehouser
Joined
Sep 6, 2006
Messages
18,056
Location
central Florida
If that were mine, I'd swap the overhand for a backed up slip knot. It'd be much easier to untie.

Too bad you couldn't do this with a closed friction hitch.
1- A slip knot on your lifeline is a horrible idea and I cannot imagine any scenario where it would be acceptable.

2- Why couldn't you do that with a closed hitch?
 
T

Tom Dunlap

Guest
This ISC pulley, http://www.iscwales.com/whatshot/2008/may/index.htm is rated to have a load attached to the end. For years the Petzl Fixe has been used as a slack tender with the friction hitch terminated on the piece between the cheekplates. The Fixe wasn't designed for this configuration and I don't think that Petzl rated it either but I might not be current on this.

The pic on the website sure doesn't show the pulley in it's best use.
 
The Tree House Loves TreeStuff!
Top