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Old May 5th, 2008, 03:19 PM   #1
Rebel2345
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Default Strong enough for pulling?

I need to redo the rear bumper on my truck so I can take the body lift off. The one thats on it now sticks up over the frame rails, and it will get in the way of the bed when it comes down to its original mounts. I have the steel to do a new bumper, I just want to ask if this would be strong enough to hold up to having a 2 inch hitch resessed into it, and used as a pull point.

Red lines are welds.



Its a 2x3x 1/4 wall tube, 5 feet long. The fish plate thats in the corner of the frame and bumper that you see, is 4 inch-3/16ths thick angle iron are cut two inches wide, and cut for rosette welds. The holes on the insides of the frame will be filled in and probably have a fish plates as well.

If i resessed a 2 inch hitch into that, would it hold up to being tugged on if I happen to get stuck in some deep mud or something along those lines?
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Old May 5th, 2008, 03:44 PM   #2
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yes, as long as the welds are good and the frame ends are good.
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Old May 5th, 2008, 04:20 PM   #3
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Frame is in good shape, and we have good welders at work, Lincoln 220, and a Miller TIG welder. I will probably use the TIG to weld in the hitch, but use the lincoln for the rest. Mainly because its hard to get to, and kind of un-necessary.

I am pretty good at welding with both of them, but if I have any trouble I will probably have my coworker do some of it since he's a very good welder.
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Old May 5th, 2008, 07:47 PM   #4
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Quote:
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yes, as long as the welds are good and the frame ends are good.
agreed
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Old May 5th, 2008, 07:51 PM   #5
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why not put plates on the top and bottom ?
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Old May 5th, 2008, 07:56 PM   #6
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why not put plates on the top and bottom ?
Yeah! Big trapezoids! Bonus points for a rhombus!
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Old May 5th, 2008, 08:08 PM   #7
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I did think of the top after I did that little drawing up.

The bottom, I could do, but at the same time, I'm using this bumper to create room for the shackle hanger that will be welded behind the original when I do the Chevy spring swap. There is only about two inches of frame behind the original now.

I could still do it, and just weld the new shackle hanger over the fish plate?

Or I could use one long ass shackle from the stock location like I've seen others do
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Old May 5th, 2008, 10:47 PM   #8
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Only thing I thought of would be to put two additional bars starting from the center of the backside of the bumper and going to the frame rails.

Then if you need to get pulled out the bumper will not bow out.

Cliffs notes: traingulate from the rear of the hitch mount to the frame rails.

I had this happen on a Toyota when I got pulled out from the bumper mounted hitch, it bowed bad enough to bend the ends in enough to dent the quarters.


Bad computer skillz, but you get the idea.


Last edited by firehawk; May 5th, 2008 at 10:52 PM.
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Old May 6th, 2008, 06:41 AM   #9
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it is better to pull on the corners (placement of the gusseting plates) of the flat surfaces rather than in the middle of the wall.

splitting hairs to an extent but if there isnt anything stopping you from doing as good as can be then why not.
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Old May 6th, 2008, 07:35 AM   #10
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Quote:
it is better to pull on the corners (placement of the gusseting plates) of the flat surfaces rather than in the middle of the wall.
True enough.

I'm kind of fighting it, but I know I'm going to have to do it right and buy some 1 inch plate, cut holes through the tube and use that as d-ring plates and the mounting plate. So the force goes directly to the frame instead of any being on the bumper.

I was having trouble thinking of a way to do that with the tools I have at home, without creating sloppy holes like using a torch, but I think I have it now.


Thanks for the input guys, I'll just do it the way I should instead of worrying about it this way.
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Old May 6th, 2008, 08:20 AM   #11
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I'm kind of fighting it, but I know I'm going to have to do it right and buy some 1 inch plate
If you need some 1" plate shoot me a pm, I have some scraps that will work well if you can cut and drill the stuff.
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