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Unread 12-02-2014, 09:20 PM   #1
Rockdrummer93
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2001 XJ Cherokee 
 
Join Date: May 2010
Location: Taylors, South Carolina
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Cage idea

Posted this over on NAXJA. But figured I'd see what my fellow Jeepforumers think about it as well, so here it is. Ive been thinking about a cage, But don't want to spend a ton and really don't care for it to be a full cage. I know how weak delicate XJs are so I know even with a cage a good roll over is going to destroy the Jeep. With that in mind I really just want one to protect me and the passenger and so I can have a harness bar. I got bored in class the other day and drew something up. A TJ style cage in a XJ Ive been calling it. What do y'all guys think? would it work or would it be pissing in the wind? I have rear shock hoops and a brace bar for those and the fast back tube will tie into. I have no back seat so Im not really worried about it being in the way. A buddy of mine at the local 4x4 shop says it won't work cause it will pretty much rip the back of the Jeep apart since I won't have a brace over the rear where the shackles are. What do y'all say about that? truth? What other advice do y'all have?





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Unread 12-03-2014, 05:54 AM   #2
wilson1010
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Unread 12-03-2014, 07:35 AM   #3
Rockdrummer93
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Quote:
Originally Posted by wilson1010 View Post
You have any more pictures of how it goes wraps the dash?
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Unread 12-03-2014, 09:19 AM   #4
wilson1010
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Quote:
Originally Posted by Rockdrummer93 View Post
You have any more pictures of how it goes wraps the dash?
That is really the genius of my cage design. It doesn't wrap the dash. It terminates at the dash and is bolted to the A pillar. Of course, the A pillar provides no support. The A pillar bolts are mostly to keep the cage and the A pillar in line in the event of a rollover. That is the whole problem with the XJ. Weak A pillar. I have seen A pillar collapse on an XJ from a single rollover with a fall of less than 3 feet (bank gives way and you are upside down in the creek. Not a good thing).

So, I made a cantilevered design where the windshield and A pillar wrap is self supporting to 34,000 pounds. It supports that weight without any connection to the A pillar or the dash. And, it is not designed to protect a front end crash. No idea what that number is, but it will maintain its shape with a 34000 weight on it from the roof. Engineered by actual engineers. More than enough for a slow speed rollover. Notice the massive support from behind the front seats. I should patent it.

Here you go:





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Unread 12-03-2014, 09:58 AM   #5
Rockdrummer93
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That's a weird design.. Looks a lot cleaner. But has it been used?
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Unread 12-03-2014, 11:28 AM   #6
wilson1010
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Quote:
Originally Posted by Rockdrummer93 View Post
That's a weird design.. Looks a lot cleaner. But has it been used?

<TTTab: 0x5ddbdd0; baseClass = UIControl; frame = (0 0; 0 0); layer = <CALayer: 0x5dd99d0>>
It's my design. Have I rolled the Jeep? No, not yet.

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Unread 12-03-2014, 12:19 PM   #7
Rockdrummer93
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I just don't see it.. Wouldn't you have to stiffen the lower part of the a pillar?

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Unread 12-03-2014, 02:29 PM   #8
wilson1010
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Unread 12-03-2014, 02:47 PM   #9
Rockdrummer93
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Just cause the building can support that weight don't mean it will hold it something impacted if with a downward force.. Not saying it's a bad design or that you should go roll it for me just saying that I would like to see it in action first

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Unread 12-09-2014, 10:20 AM   #10
daddyjeep87
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Going back to what the guy at the shop said...you could add an angled bar from the shock hoops down to the floor close to the shackle mounts for piece of mind. Very minimal extra work and it would sure up the chassis completely. That same thought would apply to the A pillar. By tying that into the floor you are supporting the chassis as well as protection from a roll. I don't own a Cherokee, but have heard plenty about the unibody chassis getting tired and sagging after hard use. Your cage can remedy that problem.
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