I rigged spars for most of my career in the bush. I only topped if I was worried about the 'whip' of the top. Whether the tree would live or not didn't matter, I fell most spars instead of climbing and unrigging them. I don't know if that's proper but that's how I did it/was taught to do it...
Yah I've seen that before, although the company I did my last five years with didn't have any tabs. We'd hoist the jack like I mentioned previously and the sky was only ever held onto the blade of the jack by gravity the whole time. Most of the times it worked fine but I can remember the sky...
It can't be affixed to the skyline otherwise you would have trouble tightening the sky. So it has a cover that clears the carriage and still allows the skyline to pass through?
In a situation like Ed's you have a mainline and a haulback but for simplicity's sake if you're uphill yarding this is how it works. The skyline is pulled tight by the yarder and then locked off it doesn't move. The mainline is what runs the carriage up and down the skyline. On uphilling you...
The 'carriage' is what's rolling up and down the skyline. At the point of the intermediate the skyline sit's on top of a 'blade' like device called the jack only held on by downforce/weight. The carriage has a gap or opening big enough to allow the jack to pass through underneath it as the...
I don't have a pic but I'll try to explain it. Climb the one tree rig two guy lines out at 45's on the side the jack isn't going to be on and strap on a block. Then one end of a cable goes through a 'pulley' on the jack itself up through the block hanging in the tree and back anchored to the...
Yup I did it/was around it enough that I was very proficient at it. But I rarely got to run it, we called it being the 'engineer'. I was hillside/rigger. Had to be real damn easy pumpkin going before I'd ever get a shift at being engineer.
I'm sure you've got it sorted but on non-slack pulling carriages I've worked with it sometimes pays to have a extra guy midway out to pull slack so the chokerman can pull his slack and chokers easier.
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