Ok I have bene thinking about this since I came home for the Crawl in July. A friend said I should watch the video of my rear end. So I found the video and watched it. Background: D60's, 42" SX II's (first trail ride) 7.5" RE coil and 1.75 spacer in front, 8" Alcans rear with daystar greasable shackle (about 1.5" lift IIRC) with H1 rims. I did not have near enough air out of the tires, apparently I had the staun deflators set wrong. I was told to watch the rear of the spring. The rear leafs are seperating on steep climbs. You can see it starting about 5:55. My shackle is about vertical and I know it needs to be relocated forward and down. Is this my problem or are there other issues causing the leafs to seperate and what appears to be the rear axle driving under the jeep.

YouTube - NAXJA CRAWL09 (http://www.youtube.com/watch?v=joFsWQqcmsc)

Traction bar?

If not, get one.

Timmay makes a nice almost bolt on set up. :smokin:

Mine is going on this coming week... if it stops raining.:(

wouldn't hurt to stretch the rear axle out a bit....
and a traction bar....

I have been thinking about a little stretch backwards. Maybe move the front mount back a couple inches. The goal here though is to keep as xj looking as possiable. So I don't want to have to do fuel tank mods. Have also considered redrilling the springs for a new center pin a couple inches back.

Yeah x3 the traction bar, but also, the shackle angle will help. Think about it - the back end of the leaves are trying to travel downward, but they're separating because the main cannot travel downward at all. If your main leaf could drop a little with the swing of the shackle, it might make a big difference.
Billy

My idea( I was there) is that the arch of the springs and the height is causing the rear to try to drive under the rig. Traction bar or not, that's still going to be an issue and maybe even worse with the rear lifting under throttle. Am I seeing this correctly?

That XJ at 7:05 made you look like your rigs blows.

I'll be one to agree on a trac arm.

Here's what I'd do....get a trac arm out back first. Then bring down your height a little, stretch the rear, and air down more.

I have been thinking about a little stretch backwards. Maybe move the front mount back a couple inches. The goal here though is to keep as xj looking as possiable. So I don't want to have to do fuel tank mods. Have also considered redrilling the springs for a new center pin a couple inches back.

Have you flipped the springs around yet?

If not I'd suggest that before the traction bar so that you aren't re-doing the trac bar once the wheelbase is dialed in...

less arch on the leaf its working the same way a link suspension with high angles on the links, its diving through its arc of travel.... coast over to rockhardxj.com and look for terrys info on what he did to inboard his leaf springs, i see that as solving your issue of obtaining the heigth you want while being able to run a longer flatter leaf spring ( mj leaf pack or equivalent) throw a traction bar to it and it beat it like a yuppie in a polo shirt, itll be flexxy for a leaf sprung setup as well.....



...... or i could be totally wrong it is the interweb :flipoff2:

x

That XJ at 7:05 made you look like your rigs blows.

OWNED!!!

LOL

Lower it some trim the fenders more and add a traction bar.
What kinda shocks are you running in the rear?

If you lower it, that is like lowering your AS on a link design.