Well, in the midst of all my other projects, I went out and in one day completed my hoist davit project for my cabin. This uses a vertical piece of 150" long 2" x 2" x .250" square tube. There is a 48" right angle leg at the top with a diagonal brace that comes in at 21" on the 48" horizontal and150" vertical. I have used one pin at top and bottom, using a grade 8 1/2" bolt that will fit into sockets top and bottom. The lifting point is approximately 3" in from the end of the 48" top horizontal standoff.
Any predictions from the engineers in the group as to bending in the middle of the 150" section with a 150# load? I really think that the maximum I would lift with this is 21 gallons of water in the winter. Mostly, less than 50# of groceries including the lift basket. Just a convenience device to keep us from making several trips up and down the steep stairs schlepping bags of groceries or "stuff".
A three phase ramp is being made as we speak, conforming to ADA standards, and that will help a lot. Still, it will be nice to just pile groceries or firewood in the lift, and lift 'er up.
I personally don't think it will flex enough to be a problem. When I get the base footer poured, and make a 150# test lift, I will report the actual lateral horizontal bending factor.
Anyone care to guess? Winner gets bragging rights. Place yer bets, gentlemen. Will take a month or so. Going back up on the 19th, and a few days to form and pour and cure the footer. This has been an ongoing project, and it will take a while to complete. But, it's moving, at least.
So much to do. So little time.