Ok, sorry it's taken so very long, but when you have to do EVERYTHING by yourself, it just takes more time. I had originally wanted to get it finished out by the folks that will be producing them but, there was a baby due mid September and they were unable to help me in time. My goal was to have it ready for the Southern Cruiser Crawl at the Superlift park in Hotsprings, AR for Oct 11. Looks like I'll just make it.
So with that said, I purchased some gas to weld with and went to work. Here's the final look.
And heres snapshot of the technical memo written up after the strength analysis. This was based on a 12,000lb winch line pull directly to the front. It's important to keep in mind that this bumper was designed with a 9500lb winching capacity, but that it still holds its own just fine under 12,000lbs. The maximum allowable level of stress for this steel was 250MPa and we only saw values of 154MPa at the highest.
I have since added strategic bracing to further enhance the bumpers winching capacity. As is the case though, with all "bolt on" bumpers, the constraints will always be the actual bolts that hold it to the frame. I am considering trading the stock frame bolts out for grade 8 hardware.
I'll post up some pics at the end of this week with it painted and installed....FINALLY!