100m Speedline. Which Rope?

[Big 'Ammer]

If I wanted to make a long speedline for the extraction of small timber down a steep valley, rigged in to high spar trees at the top and bottom of the slope, which sort of rope would be most suitable for the purpose?

 

I guess it needs to be low stretch.

 

Machinery is a no-go on this site and the system needs setting up and removing at the end of the day by two men.

 

At the top, spike up and set a pulley block at about 10m high and tie rope off at base.

 

At the bottom, same and tension from the bottom.

 

Tandem trolley, rigging plate, slings for numerous metre lengths timber, return line/ braking rope etc...

 

Anyone ever done anything like this?

 

Cheers.

[scotspine1]

Samson AmSteel, New England Endura or Dyneema are all low stretch but steel cable is what you want to be using.

[Stephen Blair]

Double drum winch would be best IMO.

Set 1 as the top line and the other as the drag line.

ropes are a bit girly:)

[Pete Mctree]

Amsteel or something similar. If you can't get a vehicle near how are you going to winch?

[Buzzsurgeon]

Reckon it will be hard work lifting timber high enough clear of the ground for gravity to do it's bit? Cut to waste, skidding winch or log chute

[Big 'Ammer]

Without going into too much detail, I'm looking in to this for someone else, its not my job.

 

The people undertaking the work don't have access to any heavy machinery, nor could they take it on to the site.

 

The sag in the line and tension required to lift the load may well make it unfeasable.

 

A steel cable is the obvious choice, but I was wondering whether it could be acheived with the right kind of rope for ease of set-up?

 

The loads to be carried would be small and time is not too much of an issue.

 

Two 50m sections may well work better?

[Buzzsurgeon]

How about a capstan petrol winch or chainsaw winch?

[Tony Croft aka hamadryad]

get a good length of polydine use a three to one advantage to tighten and it will work just fine if needs be you can set up a small pulley system to tighten up on heavier sections lifting them clear of ground same as the tensioning set up.

[Big 'Ammer]

How about a capstan petrol winch or chainsaw winch?

 

I suggested that to them.

 

There is a footpath that the timber needs to clear and can't be dragged across though.

 

The long speedline idea may not work.

 

A shorter line to get stuff as far as the path and then start again and skid downhill perhaps?

[Tony Croft aka hamadryad]

I suggested that to them.

 

There is a footpath that the timber needs to clear and can't be dragged across though.

 

The long speedline idea may not work.

 

A shorter line to get stuff as far as the path and then start again and skid downhill perhaps?

 

cant it be left as habitat or is this for timber extraction?