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Old 11-20-2013, 11:10 AM   #1
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building a stinger

So a buddy in the jeep club said he would help me build up a stinger for only the cost of materials. I have seen his and he is qualified to do welding that is up to par.

That being said,

what thickness do should i have the tubing?
what braces should I have for it?
Other suggestions?
Dimensions? Height, distance out from vehicle, etc.

I will be designing it myself for the most part (engineering background). I know somewhat about structures and bracing, but figured I would ask the jeep gods their advice and wisdom.

Pictures along with explanations would be more than welcome.

Thanks!

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Old 11-20-2013, 11:17 AM   #2
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oops accidentally clicked on the jk forum. would a moderator please delete this thread? thanks

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Old 11-20-2013, 11:43 AM   #3
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I don't see a reason to move it. You will need to go at least .120 wall. Thicker would be nice but then you are limited by the bending device. Find out what it can handle and go from there. The bracing should go up the hoop in a 25% range. Curve it so that the width is at the base. You can use 1/4" to 3/16" plate for this. Make sure the bumper is thick enough to handle the impact. And you should try to align the hoop on the bumper with the frame mounting points for maximum strength. If the contact area in the bumper skin is not as thick as your brace material, you may need to plate that too.

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Old 11-20-2013, 11:53 AM   #4
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Bending device restrictions, didn't even cross my mind. Thanks.
I was planning on about 25-33% braced with those thicknesses, so we are good there.
"curve it so the width is at the base"? not sure what you mean here.

It is going to be welded onto the stock bumper, so I probably will be coming up with some sort of plating. Also, like he did on his, he had the hoop braced back and welded into the upper shock mounts. He has flat fenders, so I will have to come up with something here.
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Old 11-20-2013, 12:06 PM   #5
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For it to be functional, meaning that it will help stop a front roll it will need to be angled appropriately. What that angle is, I don't know... right about before the jeep would go ass over tea kettle. Watch some vids and check out the surviving manufactures stingers if you don't know what I am talking about.
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Old 11-20-2013, 12:11 PM   #6
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although that is a bonus, front end roll is least of my concerns. I have heard of several other functions to a stinger:
1. deer. The angle of the stinger will force a deer under the jeep instead of into or over
2. pivoting around obstacles (we have lots of trees here)
3. if it is strong enough, I have even heard of one being used in combination with the winch as a hoist.

That being said, I am curious what the necessary angle is.
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Old 11-20-2013, 12:12 PM   #7
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Quote:
Originally Posted by K.wag View Post
Bending device restrictions, didn't even cross my mind. Thanks.
I was planning on about 25-33% braced with those thicknesses, so we are good there.
"curve it so the width is at the base"? not sure what you mean here.

It is going to be welded onto the stock bumper, so I probably will be coming up with some sort of plating. Also, like he did on his, he had the hoop braced back and welded into the upper shock mounts. He has flat fenders, so I will have to come up with something here.
Smaller as it goes up from the base is probably a more accurate statement. Most manufacturers curve theirs and put their logo in it. You can go with plate support on the tubes or a combination of tube and plate.

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Old 11-20-2013, 12:15 PM   #8
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Here's a link to a build and how they figured the angle.

stinger angle - JeepForum.com

Bob K.
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Old 11-20-2013, 12:25 PM   #9
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They look to be a 45 degree angle, don't take my word on that. You think a stock bumper will handle such a device? If your going to use a stock bumper, I would use the same thickness tubing as the bumper and weld a plate to the bottom of the tip of the stinger for strength at the bend, then make it bracketed to the actual frame mounts. If you bracket it to the frame mounts, use you could technically use the same thickness as the frame.
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Old 11-20-2013, 12:25 PM   #10
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Quote:
Originally Posted by nwbronco View Post
Here's a link to a build and how they figured the angle.

stinger angle - JeepForum.com

Bob K.
awesome! I will take a look

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