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Rear Airlift Bumper - dimensions

Stonewall

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Location
Peoria, IL
Here is a drawing that I put together based off of the brackets, my HMMWV, and measuring an official bumper installed on my friends HMMWV. I have not made my bumper based off of these yet, so I cannot guarantee the drawing, but it should be good. Keep in mind that the official bumper has bungs welded into all the spots where the 1/2-13 bolts mount to the brackets. These are to reinforce the bumper against "crushing". I will not be putting those into mine, since the bumper is mostly for looks, and I find it would be hard to "crush" 1/4" wall steel tubing. Also there is a bung for the two shackles at the end of the bumper. I will most likely just use a bushing on the outside to fit the shackle, again, since I do not plan fly to fly mine from a helicopter.

http://i1339.photobucket.com/albums/o704/dwilliams329/Drawing Rear bumper_zpsl6nhokyx.jpg
 

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Last edited:

bikeman

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the website compressed it down, and it's not readable (to me)

I'd suggest uploading the original to imgur.com or photobucket or something, and then providing the direct link. That way we can see your writing.
 

bikeman

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Still No, but it might be my work computer having issues (I'm on a DoD domain). hopefully someone else will weigh in.
 

Stonewall

Member
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Location
Peoria, IL
I selected the link in my message and it took me to the photo bucket web site and gave me the option to download the drawing. I guess we will see.

Still No, but it might be my work computer having issues (I'm on a DoD domain). hopefully someone else will weigh in.
 

WAGNUM

Member
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4
8
Location
Tigard, Oregon
Inner bumper brackets

I ended up just buying an A2 bumper but I had to make the two inner brackets. Since I had to fab them up I reinforced the back of the bumper with a large piece of 5/8" plate.

IMG_0643.jpgIMG_0642.jpgIMG_0639.jpgIMG_0640.jpgIMG_0641.jpgIMG_0637.jpgIMG_0636.jpgIMG_0635.jpgIMG_0634.jpgIMG_0638.jpg
 

Bobert

Member
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Location
Des Moines/ Iowa
Thats good, it shouldn't be too hard to build one. Or do your own thing. If someone has better eyes or can correct the measurements I'll change the dimensions.

Same thing for the brackets.
 

Stonewall

Member
191
2
18
Location
Peoria, IL
20170216_140740.jpg

Here is my fabricated unit partially mounted. I added the 4" LED back up lights. Also the two brackets pointing down at the left are for the license plate. For those who have my drawing, I would move the inner bracket holes up by about 3/16". Otherwise, the rest of them fit great. Best part, the steel cost me $25, and a bunch of time drilling holes.
 

StackJ

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Really nicely done! So the PDF posted earlier was correct? Next project for me. I have the inner brackets already.
 

TOBASH

Father, Surgeon, Cantankerous Grouch
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View attachment 666754

Here is my fabricated unit partially mounted. I added the 4" LED back up lights. Also the two brackets pointing down at the left are for the license plate. For those who have my drawing, I would move the inner bracket holes up by about 3/16". Otherwise, the rest of them fit great. Best part, the steel cost me $25, and a bunch of time drilling holes.
Really nice work!

Please clarify which holes to move, perhaps in a drawing?

Thanks

T
 

Action

Well-known member
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1,558
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Location
East Tennessee
View attachment 666754

Here is my fabricated unit partially mounted. I added the 4" LED back up lights. Also the two brackets pointing down at the left are for the license plate. For those who have my drawing, I would move the inner bracket holes up by about 3/16". Otherwise, the rest of them fit great. Best part, the steel cost me $25, and a bunch of time drilling holes.
Did you place anything inside the bumper at the bolt holes?
 

Stonewall

Member
191
2
18
Location
Peoria, IL
The holes to move are the 4 holes that you would use to attach to the two inner brackets. I would shift them up about 3/16". The material is just 2x8x1/4" wall box tubing. You can try a scrap yard. You can try a local steel distribution company (probably have to purchase 24' from them however). I was lucky and one of my customers had a few scrap pieces that they sold me for a song. I did not weld in the spacers in each hole, as you would find on the official unit. I think those are a bit overkill, as you would have to really, really crank on the mounting bolts in order to "smash" the bumper. Also, I am not planning on hanging mine from a helicopter. It is more than strong enough to pull an appropriate sized trailer (compare it to a readily available hitch/receiver that you would put on an F-150).
 

donquijote

Active member
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Location
Louisiana
Do you mind posting a high-resolution version of the photo? I can't read any of the dimensions and definitely want to make this! Or i'll take a dwg/dxf of the drawing if you don't have a hi-res jpeg. Thanks!
 

TOBASH

Father, Surgeon, Cantankerous Grouch
Steel Soldiers Supporter
Supporting Vendor
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The holes to move are the 4 holes that you would use to attach to the two inner brackets. I would shift them up about 3/16". The material is just 2x8x1/4" wall box tubing. You can try a scrap yard. You can try a local steel distribution company (probably have to purchase 24' from them however). I was lucky and one of my customers had a few scrap pieces that they sold me for a song. I did not weld in the spacers in each hole, as you would find on the official unit. I think those are a bit overkill, as you would have to really, really crank on the mounting bolts in order to "smash" the bumper. Also, I am not planning on hanging mine from a helicopter. It is more than strong enough to pull an appropriate sized trailer (compare it to a readily available hitch/receiver that you would put on an F-150).
Thank you but I'm sorry to hear that you are not planning on suspending her vehicle from a helicopter.
 
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