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Bumper build

do you not think you will bend that 3/8'' plate sideways if you ever need to pull in any direction other than straight forwards? i would think 1/2'' plate at the bare minimum, & that may still bend sideways if it ever gets snatched on.
 
blazin_blazer said:
do you not think you will bend that 3/8'' plate sideways if you ever need to pull in any direction other than straight forwards? i would think 1/2'' plate at the bare minimum, & that may still bend sideways if it ever gets snatched on.
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It is HIGHLY unlikely to bend 3/8" plate in this situation.

First off, there are two brackets (one on each frame rail, obviously) and the brackets from the back side of the bumper tube to the frame is a very short distance which makes it much stronger than if it was a ways away from the frame.

Secondly, because the brackets go through the tube it's not going to bend or break a weld as if the bracket only bolted or welded to the back side of the bumper.

I think most of the vendors are using 3/8" plate for their brackets.
 
The brackets that hold my bumpers to the frame are probably 3/8" or 1/2" but the mount for the clevis is easily over 1" as you can see in the pic. You could probably sandwich a couple of plates for your clevis mount though outside of the bumper.
 
Desert Rat said:
The brackets that hold my bumpers to the frame are probably 3/8" or 1/2" but the mount for the clevis is easily over 1" as you can see in the pic. You could probably sandwich a couple of plates for your clevis mount though outside of the bumper.
Click to expand...

That is my plan and exactly what i did on my rear bumper. IIRC the rear shackle mount is actually 1.125" wide.
 
Big Blzn said:
Scott, what is the total length of the mounting plate from shackle tip area to rear?
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From front to back it is 14" overall. There is 2.5" that sticks out the front of the bumper, then there is 3" going through the bumper so that leaves 8.5" from the back of the bumper to the end of the bracket.
 
4X4HIGH said:
IIRC the rear shackle mount is actually 1.125" wide.
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That sounds about right. Both my front and back have the mounts sticking through from the back but I can't tell if they were cut from a solid piece or sandwiched, welded, and filed down smooth.
 
Ok, here is the latest progress. This was a time consuming ordeal. I cut the outside shape with my sawzall then used my angle grinder with a flapper disc to smooth it out and trim it down to my outline and then finish off the D-ring hole.

kdk_0082.jpg

kdk_0085.jpg
 
bp71k5 said:
You cut those with a sawzall? Wow...:bow:
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Well, I think that's rough cut with the sawzall and then a LOT of shaping with his nuclear diamond-tipped flapdisc. Regardless, it's beautiful work... I saw the first one today, bloody solid beef, that is.

Hey Scott, how'd those 10TPI blades turn out?

-- A
 
WHAT thats 3/8ths plate cut with a sawzall?!?!?!

To think I coulda used that and I cut my 3/8th brackets with a grinder and cutting discs.... That took so long....
 
Stomis said:
To think I coulda used that and I cut my 3/8th brackets with a grinder and cutting discs.... That took so long....
Click to expand...

or ya coulda just came to my house and used the plasma..... :p::wink1:

looks good Scott... what winch do you run?
 
dremu said:
Well, I think that's rough cut with the sawzall and then a LOT of shaping with his nuclear diamond-tipped flapdisc. Regardless, it's beautiful work... I saw the first one today, bloody solid beef, that is.

Hey Scott, how'd those 10TPI blades turn out?

-- A
Click to expand...


Aaron, those 10TPI blades cut easily and pretty quick actually.
 
can you give us a blueprint view of these parts & the rest of the bumper....not to be smarty pants, but why do you sandwich your 3/8ths plate to 1 1/8th'' if you don't think the 3/8ths plate would bend?....i think if the strap was as far out on the shackle as it could get and it got snatched on sideways, it would bend just the 3/8th'' plate, but w/your sandwiching it seems secure...i like how you stick the center of the d-ring through from the back and it is the mounting bracket also. i guess i should have looked at your other bumper build before thinking you were leaving just the 3/8th's sticking thru.
 
blazin_blazer said:
can you give us a blueprint view of these parts & the rest of the bumper....not to be smarty pants, but why do you sandwich your 3/8ths plate to 1 1/8th'' if you don't think the 3/8ths plate would bend?....i think if the strap was as far out on the shackle as it could get and it got snatched on sideways, it would bend just the 3/8th'' plate, but w/your sandwiching it seems secure...i like how you stick the center of the d-ring through from the back and it is the mounting bracket also. i guess i should have looked at your other bumper build before thinking you were leaving just the 3/8th's sticking thru.
Click to expand...

What do you mean by a "blueprint view"?

The reason i sandwich another plate on the outside for the D-ring is to take up the space between the shackle pin so the D-ring doesn't move side to side a bunch when it's attached to the mount. Also the shackle mount is only in single shear on the frontside of the bumper so making it thicker prevents it from bending unlike the backside of the bumper where the bracket is in double shear.

I will have pics of the center piece of tube in a couple days once i get it cut to size and get my bracket slots cut so that it fits over my brackets (which are now attached to my frame).
 
a pic or drawing that shows the overall measurements & measurements of the holes in the pieces that mount and come thru the tubing for the d-ring...from there a person could go many different ways.
 
blazin_blazer said:
a pic or drawing that shows the overall measurements & measurements of the holes in the pieces that mount and come thru the tubing for the d-ring...from there a person could go many different ways.
Click to expand...

I will see what i can do once i remove the brackets again. Basically i just clamped a piece of plate across the top of the framerail hanging over the outside edge and then layed piece of plate against the side of the frame and back against the body mount and then used a silver permanent marker to trace the bolt holes onto the plate and then i center punched the marks and drilled my holes. I can try to get as close as i can with bolt hole spacing though. The bracket is 14" from end to end and there is 2.5" that sticks out the front of the bumper with the shackle hole centered as close as possible.
 
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