Mounting Tabs for D rings? - JeepForum.com
 
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post #1 of 10 Old 05-19-2004, 10:59 AM Thread Starter
Birdlaw
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Mounting Tabs for D rings?

I am building a set of bumpers. Garden variety out of 3/16th rectangular tubing.
Where on the bumper would you mount tabs for d rings as far as strength is concerned?
I am going to mount them through the bumper(cut slot and weld from both sides), but should I mount them as close to the frame tie-ins as possible, or would further out be OK?
Any other suggestions appreciated.....
Thanks,
J


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post #2 of 10 Old 05-19-2004, 01:41 PM
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Closer to the frame mounts the better.

What material are you planning on using?


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Tyler, Texas
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Last edited by dzp; 05-19-2004 at 01:43 PM.
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post #3 of 10 Old 05-19-2004, 03:11 PM Thread Starter
Birdlaw
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2x4 rectangular tubing. 3/16 wall.
I already have the bumper cut and the corners cut (not very original, but I like the look).
I am welding a 1/4" plate along the top of the bumper to use as a mounting plate. I will cut 1/4" tabs to use for the bottom mounting tabs.I am thinking about 1.5" wide and long enough to give me about a 1/2 all aroung the bolt hole. That is for the front.
The rear is the same deal except that the mounting brackets are sections of the 2x4 stock welded to the bumper and bolted into the crossmember with a 1/4" frame tie-in bracket that I have yet to make. The tire carrier hinge is a 1" trailer spindle with trailer bearings inside a 2" pipe section. a 1x3 rectangular tube will be coped and welded to the outside of the pipe with the bearings. The tire carrier will be 1.5" square tubing braced with angled supports and a triangular brace out is 1/4" plate if needed. I still don't have a latch yet, but I remember a thread on latches. I am also welding a reciever tube into the bumper with 1/4" angled braces behind the bumper.
I can't weld too well yet, but I am improving. Plus I only have about $120 in it so far and I am having a blast doing it.
Suggestions?

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post #4 of 10 Old 05-20-2004, 08:13 AM
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Sounds good. Be paitent and the welding skill will come.
I use 3/4" x 2" flat bar for the clevis tab. Hole is 7/8" for the shackle.
Do a search for the differences btwn D rings and Shackles. D rings are solid, where Shackles have the removable bolt.


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post #5 of 10 Old 05-21-2004, 08:39 AM Thread Starter
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Quote:
Originally Posted by dzp
Sounds good. Be paitent and the welding skill will come.
I use 3/4" x 2" flat bar for the clevis tab. Hole is 7/8" for the shackle.
Do a search for the differences btwn D rings and Shackles. D rings are solid, where Shackles have the removable bolt.
ooops....how about a d-shackle?
Thanks Zach!

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post #6 of 10 Old 05-21-2004, 09:11 AM
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NP
Good luck on your build. Be sure to post some pics when you are done.


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Tyler, Texas
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post #7 of 10 Old 06-02-2004, 08:08 AM
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I'm with DZP, keep the Shackle mounts as close to the Frame mounting points as possible, in fact I was thinking about mounting mine inside the rails.

I know, that if you cut through the bumper and weld to the front and the rear of the shackle mount/bumper it will be stronger, but I don't think I can remember a shackle mount pulling off that was welded to just the front of the bumper.
If you want to carry on the idea of extra welding how about welding the inside of the mounts before putting on the end caps ?

Also to add to the D-Ring/Shackle thing, some off-road parks don't like the use of "D-Rings", why, who knows but just something I read SOMEWHERE !

Later,

Scrambler82

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post #8 of 10 Old 06-02-2004, 08:47 AM
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It is because some D-ring manuf use straps that are too small (like 1/4")

You definetly want to weld it on both sides of the bumper. If you dont, then you are really pulling using the thickness (3/16") of the bumper, not the tab. You will bend it and possibly make it fail and shear away. I personally have seen them bend the front part of the bumper out. Very scary to see. Its all about knowing where the stress points are and disributing the load as much as possible. You dont need to know the math and physics behind it, just weld it to both parts of the tube.


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post #9 of 10 Old 06-02-2004, 08:58 AM Thread Starter
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UPDATE...
I had the tabs made out of 1x2 inch steel bar with a hole punched in it by a machine shop. It would have taken me six months to drill and cut these. They did in ten minutes
I welded the tabs front and back. The biggest PITA was cutting the slots. Originally I planned on using a 1" bi-metal hole saw. It worked OK. However, when I got to the front bumper, I had already welded the mounting plate on and did not want to remove it so the driss press could not reach the back side. I used a regular drill bit, drilled pilot holes and connected them with a metal cutting blade in a hand-held jig saw. It was a little slow but made GREAT slots. A die grinder added the finishing adjustment.
I'll post pics once I can borrow a digital camera......

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post #10 of 10 Old 06-08-2004, 10:44 AM
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When I made my bumper, I extended the mounting brackets through the bumper and used those for the shackle mounts. Its 1/2" steel, just used that for the bumper mount and the shackle.

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