That jeep bumper is the tits.
Thread Starter
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Recovery Vehicle
Joined: May 2008
Posts: 811
Likes: 78
From: Howell, NJ
Wow. If you don't know the difference between static and dynamic recovery then maybe you shouldn't be welding bumpers on? I wouldn't recover someone with a setup like that. Just not worth my life when welds break and metal goes flying.
The bumper itself is fine, the installation is terrible. My friend has the same bumper on his D1(ArmyRover has a pic of it somewhere). He actually made proper mounts for the bumper so it will bolt onto the frame. He also welded on side trim pieces to make it look good.
At least you list your place of employment so people know where NOT to go.
The bumper itself is fine, the installation is terrible. My friend has the same bumper on his D1(ArmyRover has a pic of it somewhere). He actually made proper mounts for the bumper so it will bolt onto the frame. He also welded on side trim pieces to make it look good.
At least you list your place of employment so people know where NOT to go.
I fab and build more cool shiit in a year than you have your whole life. What do you do for a living?
Last edited by dusty1; Jun 22, 2015 at 09:50 AM.
Three Wheeling
Joined: Feb 2013
Posts: 58
Likes: 3
[QUOTE=RoverMasterTech;523700]Cant beat it for 270 bucks. I could barely even buy the material to make one that cheap.
Always wondered if people are buying Jeep stuff to put on their rover. Now I know you can and looks good for 300$ ! Welding to to the frame is interesting. Not bad tho
Always wondered if people are buying Jeep stuff to put on their rover. Now I know you can and looks good for 300$ ! Welding to to the frame is interesting. Not bad tho
Pro Wrench
Joined: Apr 2013
Posts: 1,605
Likes: 321
From: BC, Canada
I work for a large commercial truck builder. We frequently caution body builders that welding or cutting the chassis rails certainly void warranty. I am not a material engineer, but I understand cutting or welding undermines the structural integrity of the frame.
There is also a safety aspect. It would be better for the mounting bolt to shear off in the event of a collision, rather than the impact of the welded front bumper transfer to the passengers.
There is also a safety aspect. It would be better for the mounting bolt to shear off in the event of a collision, rather than the impact of the welded front bumper transfer to the passengers.
Baja
Joined: Sep 2007
Posts: 5,232
Likes: 52
From: Georgia, USA
A 10.9 grade 10mm is a bit less than 10ksi shear, so a bit less than 80ksi total (there are 2 shear points per bolt in the bumper mount configuration).
The most common MIG wire (E70) is 12ksi tensile so about 7.2ksi shear per inch (shear strength is about 60% of tensile strength.)
That is, of course, assuming perfect welds, which those aren't.
BTW, is that angle iron? I was assuming it was square tubing, but on looking closer it looks like angle iron. If so, there's very little strength there. Kinda poor man's crush cans.
Last edited by antichrist; Jun 22, 2015 at 02:32 PM.
Three Wheeling
Joined: Dec 2014
Posts: 98
Likes: 2
From: Bayonne, NJ
RMT....please can you tell me where you bought the bumper, even if I have to modify and make mounting brackets still a bargain and about fabricating one, forget it, materials alone will be more than $270, add bending, grinding and welding. If there is a issue posting here where to purchase it(conflict with suppliers) just PM ..........thanks
Thread Starter
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Recovery Vehicle
Joined: May 2008
Posts: 811
Likes: 78
From: Howell, NJ
1ksi = 1,000 psi.
A 10.9 grade 10mm is a bit less than 10ksi shear, so a bit less than 80ksi total (there are 2 shear points per bolt in the bumper mount configuration).
The most common MIG wire (E70) is 12ksi tensile so about 7.2ksi shear per inch (shear strength is about 60% of tensile strength.)
That is, of course, assuming perfect welds, which those aren't.
BTW, is that angle iron? I was assuming it was square tubing, but on looking closer it looks like angle iron. If so, there's very little strength there. Kinda poor man's crush cans.
A 10.9 grade 10mm is a bit less than 10ksi shear, so a bit less than 80ksi total (there are 2 shear points per bolt in the bumper mount configuration).
The most common MIG wire (E70) is 12ksi tensile so about 7.2ksi shear per inch (shear strength is about 60% of tensile strength.)
That is, of course, assuming perfect welds, which those aren't.
BTW, is that angle iron? I was assuming it was square tubing, but on looking closer it looks like angle iron. If so, there's very little strength there. Kinda poor man's crush cans.