Anybody care to figure the shear strength off the fillet weld holding the frame horns to the frame? Looks like it's a 3/16" fillet weld. Frame strength is 35ksi per Ford spec. No idea what they use for an electrode. ER70S3 is common for robotic welding, which as the name implies is good for 70ksi. I don't remember if the horn is welded all way around the frame perimeter, or only along the sides. Maybe somebody can look, and measure the total length of the welds?
Actually, the shear strength a bolt is about 60% of its capacity in tension. Put in "bolt shear strength vs tensile" into Google and look at the item from Portland Bolt. By the way an excellent source of information on all things threaded fastener.
Over the weekend I can look at the welds on those added plates and compute a pretty good value for their strength.
I did a winching class with Allen and the one thing he suggested to me was bring the van in and have them weld a plate on the crumple zone on the frame so I don't stretch it. It's still on the to do list
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Kelly, Claudine, Sophie dog, Bell the redheaded step child and Gooseberry RIP.
Most the time the Copilot is Now Sophie dog the noise maker.
One more vote for never having a problem. I've pulled hard enough with my 9000lb Warn winch to nearly stall the motor with no problems. Never the less, It couldn't hurt to do a close inspection to see if I'm headed for trouble
Black Wheelchair Van
Jiminy
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