[paragon]

Good discussion...
Not to butt in... but how is the COG changed all that much by shifting weight? By the fuel consumption the COG changes as the weight of the gas is lessened, coupled with the fact that you maybe carrying tons of gear and spare part in the back behind the seat (my spare **** and tools = 30lbs). Take along some camping equipment... This wouldn't require suspension mods.
My JK squats a little to the side when I fill up already.
More info please...?
I have been on the trail with several loaded JK's and they only squat a little.
Wouldn't the Airlift 1000 air springs remidy this squating problem?

Maybe someone with better articulation and better understanding of suspension dynamics could better explain it.

But here is a link to an article that was written by the guy that owned Nth Degree, Jim Frens, and it might articulate the effects of some of what you are saying.

http://www.jkwheeling.com/viewtopic.php?f=6&t=38

 

[justajeep]

I know that the whole COG is up in the air right now, here is my thoughts...

You can get a 2" body lift, then lift the tank. Everyone is saying that 2 inches would be great, well. There you go.

Then you can lower your suspention lift to get your COG back and still have enough room to flex and build a skid plate that is flat.

I havent looked, but, it should work. Im just not at my Jeep right now to see for myself.

 

[RedRockJK]

I know that the whole COG is up in the air right now, here is my thoughts...

You can get a 2" body lift, then lift the tank. Everyone is saying that 2 inches would be great, well. There you go.

Then you can lower your suspention lift to get your COG back and still have enough room to flex and build a skid plate that is flat.

I havent looked, but, it should work. Im just not at my Jeep right now to see for myself.

That won't work, see pic below. The frame crossmembers would have to be raised somehow in order to move the tank up.

More pics of the naked frame here:
http://jkowners.com/forum/showthread.php?t=401

 

[justajeep]

OOPS... guess not, sorry...( but if you cut those things out, or heated them up and pushed the plastic tank into them you might be able to get an inch or so. nevermind)

 

[PhilD]

Then you can lower your suspention lift to get your COG back and still have enough room to flex and build a skid plate that is flat.

But you'd be back where you started in terms of clearance, and clearance is an issue on 4 drs. Lower CoG don't help much when you are high centered and stuck.

 

[toadontheroad]

Going back to the COG, wouldn't 2 smaller tanks on either side of the drive shaft just up inside the rails give the best COG?

BTW, the 22 gal talk is only about 150 pounds. Far less than my 6'3" frame. And if you throw a couple buds in there and are worried about the COG with a full tank, better leave the fron passenger seat empty.

 

[Quadratec Inc.]

You'd have to rig up some sort of pump system to get one tank of fuel to the other or have dual pick up's....seems more complicated than it's worth.

 

[Gib]

What about building an aluminium fuel cell that is slightly shorter to fit in the stock location. Basically build a Genright fuel cell for the JK. Design it to where it tucks up into the frame rails. You wouldn't lose much capacity.

 

[PhilD]

What about building an aluminium fuel cell that is slightly shorter to fit in the stock location. Basically build a Genright fuel cell for the JK. Design it to where it tucks up into the frame rails. You wouldn't lose much capacity.

A shallower fuel cell with a good skid plate would be the ideal solution in my view.

 

[nam6869usmc]

A shallower fuel cell with a good skid plate would be the ideal solution in my view.

X2,..>Definitely ideal,......going over a sharp up & down(high centered) obstacle would take that worry away.

 

[Gib]

I think you may even be able to get back some of the loss of capacity if you built it to take advantage of as much space as possible. Oh, and yes I wouldn't run an aluminum cell without a good skid. I should have mentioned that before, but I was thinking of Gen-rights TJ tank, and the skid is built into it.

 

[Ruskin]

I was looking at the pic of the frame. If you had some mad plastic molding skills, I would think you could fab a tank that raised up the stock bottom up a couple of inches and fit up inbetween the crossmembers. It's taking advantage of the space between the crossmembers that's key. To make this work might require a body lift.

 

[fr33land]

I was looking at the pic of the frame. If you had some mad plastic molding skills, I would think you could fab a tank that raised up the stock bottom up a couple of inches and fit up inbetween the crossmembers. It's taking advantage of the space between the crossmembers that's key. To make this work might require a body lift.

I dont think a body lift will work. look at the crossmembers above the tank. Raising the body will not raise the cross members and the tank is already as high as it will go.

 

[Ruskin]

I dont think a body lift will work. look at the crossmembers above the tank. Raising the body will not raise the cross members and the tank is already as high as it will go.

Think of a camel. Put humps on the gas tank between the cross members. That's why you need the guys with mad plastic molding skills to create this crazy tank with a shallow bottom for clearance and humps to increase capacity.

I'm just an idea guy. Those of you who know how tanks have to be designed from an engineering point can tell me i'm wrong.