What flex is best?

[AMSting]

I have a leaf sprung CJ using stock YJ springs SOA. I don’t think that information matters for my question, but there it is just in case. My question is what is the general opinion on how best to set up for flex? My current setup has about 80% of the axle travel in the down direction. What I mean is my shocks can extend about 8 inches and have 2 inches compression available at rest.
In my way of thinking, I should keep the tires on the ground if at all possible, so the bias towards extension allows following terrain contour easier. If the tire is hanging in the air, it can’t provide any traction. A problem with this is the need for limiting straps, suck down winches, etc. so you don’t get too much extension when climbing or descending. It also allows significant body lean on side hills, which could make a roll over more likely.
On the other hand, limiting the extension makes it more likely one tire will be off the ground in rough terrain. I guess this would be less of an issue with front and rear lockers, but may be critical for open diffs. I think this would minimize the need for limiting straps and suck down winches, and would provide more stability on side hills. Body lean should be limited by the additional force required to lift the up-side tires.
So, is there a leading opinion, or is it pretty much up to whatever you want to do?

 

[GubNi]

Limiting straps aren't needed (in my opinion) with traditional shocks. Even with my air shocks on my buggy I don't have a strap on each on, just a strap in the middle. Also I rarely use or need a suck down winch. It's great in really challenging stuff, but with a CJ I doubt you need it.

I think your original question is which flex is best? I think coil spring flex is best.

 

[marvilusone]

My personal preference is low COG minimal ~4" uptravel and all the rest is droop. Downsides with this setup are possibly needing limiting straps depending on your drivelines or suspension, possibly needing suckdown winches to control unloading and GOOD skidplates.

Flex can come in all different ways from all different types of suspensions and setups but it all boils down to what it's main use is for. For alot of off camber situations you need the low COG to keep it on all fours. If it wont see muck off camber stuff and it's for general trail running, yuo can run a little more height and not have to drag over so many things. It all boils down to what you are willing to sacrifice. It is next to impossible to build a rig that performs exceptional on all terrain but you can build a well rounded rig that can be quite capable in all types of terrain but not the best at everything.

If you're looking for inspiration for a low CJ/YJ look at Greg Slade's Herbie YJ. Stock height spring under suspension, 36's, alot of beef skids and it flat out gets it. May have something to do with the driver and the style of driving too but IDK.