PDA

View Full Version : D-Ring Shackle Mount

Israel
July 5th, 2006, 18:51
I'm building a rear bumper and right now I'm designing the shackle mounts. I plan on having one side of the 2"x3"x1/4" tubing I'm using to space the bumper from the mount plates, go all the way through the 2"x5" bumper and stick out 2". I'll then weld 1/4" plates to both sides to make the mount 3/4" thick.

Does this sound adequate in regards to thickness and the amount of protrusion from the face of the bumper? Also, what diameter of hole do I need to drill through the mount tabs? If I knew what the 3/4 in 3/4 shackle was, then maybe I would know better what I need.
kirby
July 5th, 2006, 19:13
The hole is 7/8" for a 3/4" shackle.
RCP Phx
July 5th, 2006, 19:36
the 2"x3"x1/4" tubing I'm using to space the bumper from the mount plates,
Are you refering to the 2 factory 4 bolt mounting areas?
kubtastic
July 5th, 2006, 19:56
mounts vary from 1/2" to 1" thick. Leave at least 1/2" around the 7/8" diameter hole. To neglect to use the factory hitch mounting would defeat the purpose of over-engineering it.
Israel
July 5th, 2006, 20:11
Thanks Kirby! Do you think a 3/4" shackle would be suffecient?

Are you refering to the 2 factory 4 bolt mounting areas?

Yes. I've got 1/4" plate that will use those 4 bolt holes on each side, then I have 2"x3" tube to space the bumper out 2.5" from the plates.

mounts vary from 1/2" to 1" thick. Leave at least 1/2" around the 7/8" diameter hole. To neglect to use the factory hitch mounting would defeat the purpose of over-engineering it.

I already planned on using a 15" long 2" wide flat bar to take advantage of the hitch mount holes and maybe even drilling 8 more right and left of the mount plates. I'll have to take pictures as I do this so I can show you what I mean.

Any other suggestions? I really appreciate the help everyone!!!
RCP Phx
July 5th, 2006, 20:32
Thats where I was headed,the stock mounting isnt enough.
http://www.hometown.aol.com/rpayne9421/images/rear%20bump2.jpg
buzzbombxj
July 5th, 2006, 23:08
The hole is 7/8" for a 3/4" shackle.
the pin is rough 7/8'', when i made a tow point i punched a 7/8'' hole and none of my pins fit, if i did it again id make it 1/16 or so larger
Israel
July 6th, 2006, 00:53
The hole is 7/8" for a 3/4" shackle.

By the way, what does the 3/4" for then? The thickness of the ring itself?
buzzbombxj
July 6th, 2006, 01:57
yes the 3/4'' is the ring diameter, the pin i think is 1/8th more to compinsate for the shape of the pin not being as strong