Speed lines

[Old Mill Tree Care]

use a supper static rope

tension with a grcs or SW for rapid tensioning/ tensioning and plenty of power

use a proper tandem pulley or a twin pulley'd carrage

have lots of slings & krabs & probably a rigging plate

watch the vectors! you may need a very long traverse line to ensure the timber is compressed axially

depending on the job consider setting up a reeve, an English one is best

 

forces involved can be MASSIVE consider using a computer program if you wish to pre tension the traverse line before securing 'packages' to it.

If not ensure that you use a tension aid which will not overload the system, place the package on an un-tensioned traverse line then apply tension before lowering the package.

 

if you know what you're doing lighter sections can be cut strait onto the tensioned traverse line but like i said make sure you understand the forces & maybe use a computer to get it all right

 

or better still get someone in to guide you through the job or seek training. i did a 3 day speed line course took weeks of revision to stop my head spinning!

 

What he said but without the computer stuff.

 

Keep it simple and well within the gear and tree limits and you'll be fine.

 

I have found that unless the job is just perfect for speed lining, it's a massive hassle. When it's perfect though, it's awesome!

 

Make sure that your groundies understand what the aim is though otherwise they'll act like retarded slugs. Establish a simple communication system as well because they could be 200m away from you.