Welcome to the Arbtalk.co.uk | Discussion Forum for Arborists.

If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below.

Arbtalk.co.uk | Discussion Forum for Arborists » Knot Guide - Helical

Knots Guide Home Search Knots A-Z
Helical
Helical
Knot Type
  • Friction hitch

Application
  • Ddrt (doubled rope technique)

Suggested Cordage Size
  • 10mm on 11-13mm host line

Further Comments

  • A very responsive knot. Care must be taken to ensure it is tied correctly. Too loose and it is prone to slip, too tight and it will bind up. Much like the Valdotain tresse, it is worth experimenting with to find the perfect spot.
Click Thumbnail to Enlarge.
Step 1 - Position cord as shown Step 2 - Take a wrap then pass the tail between the cord and rope Step 3 - Take a wrap Step 4 - Take another wrap Step 5 - Pass tail behind the rope, then round the front and through the formed loop Step 6 - Pass the tail in front of the working end Step 7 - Round the back, then through the same loop Step 10 - Dress and set, tie a figure 8 stopper knot in tail
Gallery Statistics
Views: 2992
Images: 8
Comments: 3

Comments
Author Comment Date
Ben Lad Hi Nigel... so to clarify it is not advised to use a cord like silver streak in this way??

I only labour the point because here we have a demo that may not meet industry best practice, and i am still not 100 percent clear 		28-06-11
Nigel Silverstreak only has a tensile strength of 2000kg in straight pull, when knotted you can loose anything upto 50% of the ropes strength. The arb industry expects all goods to have a rating of 22kN. 28-06-11
Ben Lad At a recent tree comp a pal of mine who climbs on the Helical using silverstreak as pictured above was told that silverstreak wasn't rated high enough to use as a split tail... that both ends of the cord should be tied and clipped.

Can any one confirm this?

Thanks		 27-06-11
© 2011-2012 Arbtalk.co.uk. All Rights Reserved.


Search Engine Friendly URLs by vBSEO 3.3.0