As promised here are the details. If there is any interested I will do the same with the bale spear. I carefully drew out the plans on a scale too large to scan, so I out the plans on a chair an photographed them. I was able to read the details by zooming in but if this is hard to read I will see if I can scan the drawing in pieces. If this ended up in the how to section I would be nothing but flattered, although I know there's already one boom there. I reserve the right to publish this information elsewhere. My log hauler is also present in one of the photos, it's good for keeping dirt out of the bark of saw logs.
3 Point Hitch Lift boom description.
Here are the measurements. The cross piece between the lower lift arms is 24" and the 7/8" pins are bolted through a hole in some 1" thick stock that is 2 1/2" X 2 1/2" square, to allow room for welding it on. (Recently, to save money, I've bought some 7/8" bar stock to use instead of category 1 pins, and have been cutting a hole in the middle of a piece of 3/8 plate that's 2 1/2" by 2 1/2" square.) Have a hole big enough for the 7/8 stock to come all the way through is the best to allow a weld on both sides, but a smaller hole which the 7/8" bar stock will butt up to is good, I weld it to the plate through the hole, and it doesn't hurt to weld the bar stock to the plate on the other side, I then weld the plate onto the lower bar. The first section of the boom (closest to the ground) is 23 1/2" to the first bend. It's 14" between the bends, and the top section of the boom is 45 1/4". The distance from the base of the boom to the tip, diagonally, is 59 3/4". The diagonal boom braces are 16" long and made of 1" X 1" by 1/8" thick bar stock. The gussets on the boom at the first bend are 3/8" thick by 2" plate steel and are 6" long. I will probably gusset the second bend at some point. The lowest and highest loops are 1/2" or 5/8" loops salvaged from the tow chain loops on a truck bumper. They should be big enough to hold the hook which is attached to a pulley (mine was salvaged from a “come-a-long”. I initially put the 2 ton boat winch on top of the boom to protect it from impacts from hanging implements/logs, and to gain an extra 6-8 inches of lift. This works fairly well, I have a pulley attached to the very end of the boom. It can be difficult to keep the cable on the pulley, so the underside attachment works better. I can move the winch very easily by loosening 2 nuts, and can reposition it on top or bottom of the boom. The cable can be run down the boom to the lower loop, and the 2 ton capacity winch will move the 2600 lb tractor quiet well. The total length of the lower bar with the plates that hold the pins for the lower arms of the 3pt hitch is 26”. I’m not sure of the width of a factory implement, I measured a category 1 Massey Harris 2 bottom plow and based the width on that. I did not record the angles of the bends in the boom, they were “by eye”. This lift makes all my horse drawn implements lift type implements, at a considerable savings. I spent $40 on materials.
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