If anybody else is interested in building one of these hopefully this will give you a few ideas, This 2000 lb winch was on sale, I used it to make a bumper crane for lifting heavy rounds. First thing to change was the original bumper. New bumper material. 3" x 3" x 7' - 1/8th" wall thickness. at 0.50 ¢ a pound this cost me less than $ 17.00
Drilling 7/8" holes and cutting between them with a zip blade for inserting a 6" x 2½" receiver hitch tube. The 1/8th" wall thickness tube needed more strength so this ¼" x 64" x 3-3/8th" steel plate will be welded to the front face of the bumper.
This 1/8th" thick piece from my junk pile already had a tight bend and will be used on the rear face of the bumper to strengthen the receiver, it measures 8½" x 4½" x 3-3/8"
Using 1/8th" tube with additional plates in critical areas will hopefully keep the weight under that of the OEM bumper.
Yeah, I posted a video somewhere on this site of a 4x4 hauling a full load of wood up a really nasty old road, what a beast !
Passenger side of the bumper has a light weight 2" receiver as a stabilizer for the crane vertical post, a smaller post that holds the winch and boom slips inside and transfers the weight into the ground and not into the truck, this also allows the truck to move up or down as weight is added or removed.
These 1/8th" wall thickness telescoping posts are called Telespar, they come with or without 7/16" holes spaced 1 inch apart, I found a pile of these at a salvage yard and grabbed them, the three sizes pictured are 1¾" O.D. 2" O.D and 2¼" O.D. if you want strength without too much weight these work great.
I found this old pop top trailer axle at our local dump and dragged it home to use the hubs for the crane swivel.
I used a 20" length of 2" O.D Telespar with 18 and 20 guage shims slipped in for a tight fit to secure the hub.
Wait, whut ? Your fab skills are pretty impressive, but no welder? Skillz, you got skillz. We have a lot of welders, but very few fabricators.
Bolted a ½" thick x 2½" x 10" long steel plate to the rim. this can be unbolted for servicing the hub bearings.