lego1970
ArboristSite Guru
Well, I was just shooting that blue print out there to see if anyone would give that a green light. I'm sure of the forces applied there though. It's impossible for them to fall anyway but to the big truck. The trick is being damn sure about the lines' tensil strengths all the way around and the size and power of the truck. A little Dahtsun Love truck might get sucked back into one of these kinds of deals and/or spin out botching the whole operation. A heavy chip truck wouldn't let them do anything but follow it even at their sizes.
What does the guy tie a zip line to? On one job I had a tree at the top of a steep gulley. Below the tree was a cactus garden. I planted a few screw in stakes down the hill, and zipped the stuff that way. The cable bowed to much for my likeing though. I'd have been satisfied with a tree down there to put a manual winch on.
You didn't shoot that out there seeing if somebody would give it the green light or you would of approached it like "would it be possible to?". Instead your saying what you would do and how long the job should take.
I've done lots of pull overs useing large triple axle Grapple trucks, skidsteers and even small dozers. I've hauled lots of heavy equipment and have been around trucks more so then trees and I wouldn't trust a little 7 ton chipper truck to pull that over. Most chipper trucks have little gas V8 in them, no crawler gear, small clutches and brakes that are almost always out of adjustment.
Zip line it to the base of another tree or zip line it to a chipper truck so the pieces can be chipped without dragging them. You can use pulleys and hitches or a come-along on a bight to tighten the line. Or just move the truck slowly to tighten the line.
You dragged a huge cable up a tree? Most guys use rigging rope because it's much lighter, non-conductive, and easier to work with. Cable, huh? Learn something new everyday.