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post #211 of 1102 Old 01-19-2010, 02:57 PM
jvetter03
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Okay...so from what i have been able to research, 1/4" thick 6061-T6 Aluminum plate is not quite as strong at 1/4" carbon steel...close, but not quite as strong. On a good note it won't rust and it will flex a bit to absorb the shock from rocks...... On a bad note, it will eventually corrode and still isn't as strong as the steel.

So....weight aside, why would anybody want the aluminum over carbon steel or stainless steel?


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post #212 of 1102 Old 01-19-2010, 03:03 PM
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Because it is way more than strong enough for our application anyways.

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post #213 of 1102 Old 01-19-2010, 03:08 PM
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Because it is way more than strong enough for our application anyways.
x2, but I like the way that Blaine put it. It isn't about overbuilding the beefiest thing to have bragging rights. The best product is the one that is the best designed to hit that sweetspot between getting the job done, and having a light product that isn't wasteful.

His wording is better, but the philoshophy is there.

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post #214 of 1102 Old 01-19-2010, 03:10 PM
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If you have stiffening ribs on the aluminum it wont flex much, you wont have to add much in the way of stiffening ribs to get comparable strength out of the aluminum, but you get the benifit of less weight. To alot of us weight is important, if for nothing else, try laying under your jeep and bolting on a steel TT skid, i bet you struggle with it, but an aluminum one you could do without a jack.



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post #215 of 1102 Old 01-19-2010, 03:34 PM
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Is that aluminum going to corode as bad as most aluminum products do? Its not worth spending the money and shaving the weight if its gonna look like poo in a year or two anyways.....

Is the aluminum going to be strong enough to smack a rock hard and center without bending and buckling?

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post #216 of 1102 Old 01-19-2010, 03:45 PM
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I guess this the time to clear up some issues that people have with aluminum. One, the most important part of this whole thing is that not all Aluminum is the same aluminum. This aluminum at 1/4" is about as strong as 3/16" steel, and it is much stronger per pound. I bet someone can find the numbers. This is much stronger than anything that will take out a Jeep. The frame will probably bend before a 1/4" skid. Savvy offers a break it so we can send you a new one warranty policy. The proven strength of the gts should be enough for people to trust the 6061-T6. The spring back in the aluminum also prevents deformation. As for corrosion, I like to point back to the fact that this isn't the same aluminum in your old screen door, or you pots and pans. This stuff is much stronger. If corrosion was such a problem, why would it be used for the high end rims? Those don't corrode, and they sure don't look like garbage after 4 or 5 years, they can look great for many years. If you are worried about corrosion, get some self etching primer, and a can of spray paint. That will protect it.

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post #217 of 1102 Old 01-19-2010, 03:46 PM
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Quote:
Originally Posted by jvetter03 View Post
Is that aluminum going to corode as bad as most aluminum products do? Its not worth spending the money and shaving the weight if its gonna look like poo in a year or two anyways.....

Is the aluminum going to be strong enough to smack a rock hard and center without bending and buckling?



no,
i agree,
yes, it will most likely be guaranteed like the rest of their products




read some of this link


http://asm.matweb.com/search/Specifi...ssnum=MA6061T6



Would you not paint the aluminum skid? self etching primer and some top coat would do it some good.
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post #218 of 1102 Old 01-19-2010, 05:13 PM
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Originally Posted by jvetter03 View Post
Is that aluminum going to corode as bad as most aluminum products do? Its not worth spending the money and shaving the weight if its gonna look like poo in a year or two anyways.....

Is the aluminum going to be strong enough to smack a rock hard and center without bending and buckling?
Since when has aluminum corroded faster than steel? Leave both untreated in your back yard for a year and getback to me.

Blaine has had his aluminum skid on his Jeep for 6 years. I defy you to find a rig that has more trail runs at the Hammers than his. Still flat as ever and no visable corrsion.

You are thinking soda pop cans and this is far from that. The engineering and desgin to make a skid strong and light is an art and Blaine truly does gets it.

Weight is the number one reason why we want aluminum over steel. Add up all of the armor you plan or have on your Jeep and I bet you'll end up with a 5000 lb Jeep. My 04 Rubicon fully armored is 3950 lbs wet. Pretty close to stock weight. I'll bet I have a easier time on obstacles that a fully armor Jeep with steel.



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post #219 of 1102 Old 01-19-2010, 05:27 PM
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Well said Gerald. If people are worried about the aluminum skids, why aren't people worried about aluminum rims? People don't take time to think things through, especially when such a revolution is making a splash in magazines, and has already been thoroughly discussed by many members.

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post #220 of 1102 Old 01-19-2010, 05:43 PM
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if thats your way of thinking i want a full aluminum jeep, steel wheels suck.
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post #221 of 1102 Old 01-19-2010, 05:51 PM
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if thats your way of thinking i want a full aluminum jeep, steel wheels suck.
Well now... let's not get carried away here. I think there is a point when the aluminum can gain enough leverage over itself to cause stuff to deform. That makes things unstable. There is a reason why only certain things are made from aluminum (aside from cost). I don't think you would want an axle that would flex like Carbon Fiber as you go over every bump.

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post #222 of 1102 Old 01-19-2010, 05:55 PM
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if thats your way of thinking i want a full aluminum jeep, steel wheels suck.
If you pay Savvy enough I'm sure they'll build you an aluminum tub that's thick enough so it wont need corners or rockers.

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post #223 of 1102 Old 01-19-2010, 06:02 PM
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Well now... let's not get carried away here. I think there is a point when the aluminum can gain enough leverage over itself to cause stuff to deform. That makes things unstable. There is a reason why only certain things are made from aluminum (aside from cost). I don't think you would want an axle that would flex like Carbon Fiber as you go over every bump.
What isn't made out of aluminum? Currie makes aluminum RockJock D60 axles, the Z06 Corvette's frame is made out of aluminum, engine blocks and heads have been made out of aluminum for years. I've even seen entire car bodies made from aluminum. It's very much a cost issue.

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post #224 of 1102 Old 01-19-2010, 06:10 PM
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What isn't made out of aluminum? Currie makes aluminum RockJock D60 axles, the Z06 Corvette's frame is made out of aluminum, engine blocks and heads have been made out of aluminum for years. I've even seen entire car bodies made from aluminum. It's very much a cost issue.
Looks like I have been corrected. I will argue some about the aluminum frame though. In order to make the design for one of those to work, you would have to create a structure that is completely out of the nature for an offroader. You mention the Corvette, look at the frame though. The frame of the Vette is not even close to the TJs frame.

I know bodies have been made out of aluminum, I have just recently seen Flat Fenders for Tjs made out of the stuff. The axles though, I was completly unaware of. If they can make it would (I imagine they do), then that is fricken awesome. I did forget about the d44a when I wrote that. Motors are nothing fancy when it comes to aluminum. Aluminum seems to be a great material for blocks and heads.

Here is a serious question now, would you trust your lift to an aluminum roll cage? I don't think so with 3800lbs (about what I would expect a fully loaded AL Jeep would weigh).

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post #225 of 1102 Old 01-19-2010, 06:27 PM
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Here is a serious question now, would you trust your lift to an aluminum roll cage? I don't think so with 3800lbs (about what I would expect a fully loaded AL Jeep would weigh).
nothing wrong with a properly designed aluminum roll cage. look at that corvette frame you posted...thats a unibody car with an integrated aluminum roll cage. heck in racing applications, some roll cages are even carbon fiber.

that said, for off-road use i'd rather have a chromoly steel roll cage since chromoly steel will deform a lot more than aluminum before cracking.

aluminum is much harder to work with from a manufacturing standpoint. welding Al properly requires much more expensive equipment than mild steel ($3000 TIG vs $500 MIG), and press braking it requires careful attention to angles (steel can bend 90 deg, aluminum can't). However, steel is harder to drill - it work hardens...aluminum just melts.
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