Tree Rigging: The Plan

[rowan lee]

Cool video. Thanks for producing. I haven't seen a pull line, thrown over the top and tied off at the base before, is there a reason or advantage for this?

 

Also wondering what the portawrap device was used for in this procedure?

 

Thanks Rowan.

[Joe Newton]

Looked like a Buckingham porta wrap floating bollard type thingy.

 

Base tying the pull line means you don't have to isolate a limb.

[RDB logs]

Rich it was a 'Murphy' step cut, although Nick explains that the cutter has been using this cut before Murphy was in nappies. Lol

 

Aaa I see I forgot about that one! Thanks:lol:

[rowan lee]

Looked like a Buckingham porta wrap floating bollard type thingy.

Base tying the pull line means you don't have to isolate a limb.

 

Thanks, any idea what the functionality of the portawrap was though. An adjustable anchor point for the winch?

By not isolating a limb, there is less chance of said limb failing under tension, i gather? (sorry - not in the industry and thus need layman terms as I'm curious).

[Stephen Blair]

I reckon they used the ports wrap because that's what they had.

It's a simple way of tensioning and locking off .

[Joe Newton]

By not isolating a limb, there is less chance of said limb failing under tension, i gather? (sorry - not in the industry and thus need layman terms as I'm curious).

Not particularly, but imagine if you wanted the pull line tied round a limb high up, you would have to throw a line up, isolate a limb, pull your rope up and back down, running bowline around itself, and pull the bowline back up so it cinched tight around the desired limb. A base tie means you can just fire your line through the crown without isolating a limb, and just pull your rope through the crown, down and tie at the bottom. A picture would be more helpful.

[Mark J]

Also, throwing the line over and tying it off meand you get the maximum amount of leverage on the stem.

[martwizz]

Also, throwing the line over and tying it off meand you get the maximum amount of leverage on the stem.

 

Depending on the length of the rope, I can imagine you'd loose some pull taking the elasticity out of the rope.

 

This is a great idea that I had never thought of though, saves getting the ladder out if its a simple throw!

[Stephen Blair]

Your putting twice the down force on where it goes over, needs considering on small forks or Limbs.

[ballibeg]

Very simple rescue if ground anchor has spare line through a locked lowering device.

 

Dave