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Old March 24th, 2008, 10:28 PM   #1
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Default Corner guard questions/thoughts

Do you feel that the corner guards people have been putting on their Jeeps need to be made out of 3/16? I would think 1/8 would be more than sufficient considering most people have nothing on and the tub doesnt get that damaged except down real low on the corner when coming off a ledge. Also, would being made from 3/16 aluminium be more or less of a consideration in your purchase? I am going to make a set for myself after trying to buy a set but have been unsuccessful. Most are made in cali (shipping) or nobody has them in stock, which makes it clear nobody makes them in house, they just have them made somewhere. I have the tools to do it but kinda figured it would be easier to buy rather make considering my time and almost a full sheet of steel. Let alone trying to figure out the bend needed to make everything still line up after being cut. Please discuss.
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Old March 24th, 2008, 10:38 PM   #2
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UORC has some there. I was just in there and was looking at them. However, if you make some and want to sell some, I'd be interested...

I would like to see flush mounting hardware though versus the machine screws.
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Old March 24th, 2008, 11:16 PM   #3
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Depends on where/how you wheel. I have seem some pretty crazy dents/gouges in 3/16.
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Old March 25th, 2008, 07:30 AM   #4
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Depends on where/how you wheel. I have seem some pretty crazy dents/gouges in 3/16.
True. I'll be in UORC later so I'll check them out. Thanks
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Old March 25th, 2008, 07:42 AM   #5
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My intrest in them came after my trip to Harlan, I was against a rock half way up the body, I dont mind the scrapes and gouges but that rock caught the body seam at the rear and seperated the panels.

Let me know what you come up with.
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Old March 25th, 2008, 07:51 AM   #6
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3/16 steel isnt a problem, I was just curius what people thought about the extra 1/16th of an inch makes a difference or not. I have you in mind on this Tippy, I need a set, you mentioned wanting a set, and there are a couple others too. Plus everyone seems to be having problems getting them in a timely manner. I just want to provide these for the people that need them in our area.
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Old March 25th, 2008, 07:58 AM   #7
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I dont see where 1/8" would not hold up for scraping rocks, Its probably a different story if your hitting them hard.
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Old March 25th, 2008, 08:02 AM   #8
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Doing some quick math without specific dimensions, another 1/16 will add another 10-12 pounds per side. I'm not sure if the extra weight is worth it.

Tab, let me know what you come up with because I will need to do something.
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Old March 25th, 2008, 08:08 AM   #9
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Originally Posted by tippy View Post
I dont see where 1/8" would not hold up for scraping rocks, Its probably a different story if your hitting them hard.

x2.

I have been thinking about making some from 1/8", with the thought in mind that if they ever did dent too bad I could just make another set from 3/16".
I also dont see myself denting them because I dont take the Jeep out. It just sits in the garage while I keep upgrading it.
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Old March 25th, 2008, 08:09 AM   #10
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Doing some quick math without specific dimensions, another 1/16 will add another 10-12 pounds per side. I'm not sure if the extra weight is worth it.

Tab, let me know what you come up with because I will need to do something.
That what I was thinking, 30 pounds is a lot. Not that my jeep will be a light weight by any means but it can't hurt. The aluminum would be even better but I would be worried about rocks and stuff gouging it and sticking. Jim, whats your thought on getting the radius pressed? Would I need a custom die made ($$$$$$) or is that possible with something common?
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Old March 25th, 2008, 08:29 AM   #11
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I would be interested for the YJ, the 2A I have to find something custom as well for as I want my roll bar to tie into them. I ended up putting that off so I could try to finish the YJ.
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Old March 25th, 2008, 08:48 AM   #12
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Aluminum would be different, how about so 1/8" stainless
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Old March 25th, 2008, 08:53 AM   #13
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Aluminum would be different, how about so 1/8" stainless
Once I get the bending process worked out I could make them out of whatever you want. You need to come over and do my tranny wiring first though.
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Old March 25th, 2008, 08:53 AM   #14
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That what I was thinking, 30 pounds is a lot. Not that my jeep will be a light weight by any means but it can't hurt. The aluminum would be even better but I would be worried about rocks and stuff gouging it and sticking. Jim, whats your thought on getting the radius pressed? Would I need a custom die made ($$$$$$) or is that possible with something common?
Let me look into it. Do we know the exact inside radius that it would need to be?

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Aluminum would be different, how about so 1/8" stainless
Stainless is heavy & gouges fairly easy. I would opt for steel myself.
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Old March 25th, 2008, 09:02 AM   #15
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I'll check later on the radius. I was thinking of building a hydraulic press of sorts but lying on its side using dies possibly made from pipe (machined and heat treated) so it would be like a one shot bend. I'll think more of it as I drive all day for work, thanks for the thoughts and keep them coming! I gotta go to work.
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Old March 25th, 2008, 09:30 AM   #16
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i have seen alot of 3/16ths corners bend i was actually going to add tube to mine for extra support and im tying them into the cage from the inside 1/8th is no where nere enough metal not to bend in a hit. my aluminum tube was very bent when i got it from lanfing on a rock. and that 3/16 i believe.
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Old March 25th, 2008, 11:18 AM   #17
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why not weld in a piece of tube for the radius instead of trying to bend it?
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Old March 25th, 2008, 12:00 PM   #18
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Originally Posted by hosejockey4506 View Post
i have seen alot of 3/16ths corners bend i was actually going to add tube to mine for extra support and im tying them into the cage from the inside 1/8th is no where nere enough metal not to bend in a hit. my aluminum tube was very bent when i got it from lanfing on a rock. and that 3/16 i believe.
I might opt for thinner steel with tube reinforcement in the right places. Regarding steel versus aluminum, here are some simple numbers to go by:

One advantage of steel is that between the yield point of mild steel (around 36,000 psi) and the ultimate tensile failure point (around 60,000 psi) there is quite a large plastic range (around 24,000 psi or roughly 40% of the ultimate strength), permitting steel to endure deflection without failure, so permitting considerable ability to absorb energy.

Aluminum 5083 H-116 plate, as an example, has a yield strength of around 34,000 psi and an ultimate strength of around 45,000 psi. You can see that the plastic range of aluminum is considerably less than steel (around 11,000 psi plastic range for aluminum, or roughly 24% of the material's ultimate strength).

So, that is one of the reasons that aluminum dents easier than steel. For a vehicle that was going to take abuse, I wouldn't use aluminum.
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Old March 25th, 2008, 12:03 PM   #19
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Quote:
Originally Posted by whiterhino View Post
I might opt for thinner steel with tube reinforcement in the right places. Regarding steel versus aluminum, here are some simple numbers to go by:

One advantage of steel is that between the yield point of mild steel (around 36,000 psi) and the ultimate tensile failure point (around 60,000 psi) there is quite a large plastic range (around 24,000 psi or roughly 40% of the ultimate strength), permitting steel to endure deflection without failure, so permitting considerable ability to absorb energy.

Aluminum 5083 H-116 plate, as an example, has a yield strength of around 34,000 psi and an ultimate strength of around 45,000 psi. You can see that the plastic range of aluminum is considerably less than steel (around 11,000 psi plastic range for aluminum, or roughly 24% of the material's ultimate strength).

So, that is one of the reasons that aluminum dents easier than steel. For a vehicle that was going to take abuse, I wouldn't use aluminum.
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How fast would you have to be driving to make the steel dent?
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Old March 25th, 2008, 12:43 PM   #20
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:chiefwoohaw::chiefwoohaw::chiefwoohaw:

How fast would you have to be driving to make the steel dent?
Faster than it takes to blow a rear driveshaft.
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