Re: New Shop, sort of... Walls.. Photo Update 11/24
The bottom of the "crane" is on a hinge, screwed to the floor, there is a pulley embedded in the top of the crane and as the wall is lifted, the crane rests on the top plate, following the wall up. This was not my idea, you can buy this machine made by Tie Down Engineering but is was expensive at about $350 each, in pairs, and for one house I felt I could build something adequate. It seems to be. Also, I am only lifting sections 16 feet or less, that's about all I can handle. The commercial stuff can do up to 70 foot, sheathed walls.
I try to attach the crane at the center of gravity relative to the top plate, and then to the floor at the same spot. The bottom plate is up against the cleats on the outside so everything is pretty well balanced.
Clear enough?
I'm curious about your lift. It looks like it is not guyed up (can't see from photos) and relies on the weight of the wall to hold it at an angle. Is the bottom just on a hinge that you screw into the deck? I can't see the pulley, but assume that the come-along cable goes over one at the top and then down to the top plate of the wall you are lifting. I can't see how it does not fall over without guy lines. Can you clarify?
The bottom of the "crane" is on a hinge, screwed to the floor, there is a pulley embedded in the top of the crane and as the wall is lifted, the crane rests on the top plate, following the wall up. This was not my idea, you can buy this machine made by Tie Down Engineering but is was expensive at about $350 each, in pairs, and for one house I felt I could build something adequate. It seems to be. Also, I am only lifting sections 16 feet or less, that's about all I can handle. The commercial stuff can do up to 70 foot, sheathed walls.
I try to attach the crane at the center of gravity relative to the top plate, and then to the floor at the same spot. The bottom plate is up against the cleats on the outside so everything is pretty well balanced.
Clear enough?