weird handling with lift

[53guy]

Ok, I measured from my diff cover area and got 77 degrees, so my castor angle would be like .5 degrees positive. Lol, let me correct that angle first before we go and try other things. I have a real good feeling that is my biggest problem, what do you all think? Lol

 

[Matt S.]

Ok, I measured from my diff cover area and got 77 degrees, so my castor angle would be like .5 degrees positive. Lol, let me correct that angle first before we go and try other things. I have a real good feeling that is my biggest problem, what do you all think? Lol

WHOA! your driving a shopping cart! take that thing back to 7*!!!

 

[bigwhitey]

I put my FT long arms on today and screwed them all the way closed.
I have no more DW or BS or what ever it's awsome not to be scared when driving my rig.

How did you adjust your arms when putting them on?

 

[53guy]

Ok, when I first installed the lift, I measured the distance from the rear of the front axle to the front of the rear axle and then when I put my arms on, I adjusted the lowers until I got that distance the same. Then I adjusted my uppers to compensate for the angle of the drive shaft to where I had the same angle on the pinion as I do on the front drive shaft (double cardian style set up) so I wouldn't have any vibes while taking it to the alignment shop. I assumed that they aligned it correctly as I told them how to correct the castor angle so that they could do it. Well, they didn't do the adjustment because when I went to change it today, I looked and the pinion and driveshaft angles were the same. So I seemed to have .5+ castor. I thought that it might be the castor angle that was causing me problems because my coil springs had a slight bend to them. I adjusted my castor angle to 7.5+ degrees today and wow, the difference is night and day. No more bump steer, no more death wobble, nothing. It drives like a stock cherokee now. Yeah!!! :cheers:

I was looking at the suspension and I came to this conclusion: The way that the axle was rotated positioned my coil springs in a way that they were almost preloaded so as to multiply the bumps that I was feeling on the road instead of absorbing them. Causing in effect, BS and DW, similar to a tight rubber band. Pluck a tight rubber band and that's what my front springs did.

My wheels now center themselves which is awesome now. The bumps are smoothed out to where I can almost not even feel going over pot holes at 75 mph.

Thanks a bunch guys I really appreciate all of your thoughts and advice. Once again, another fixed jeep!

 

[MaXJohnson]

while .5° is way off, 7.5° is more than most guys can run and still have liveable u-joint angles. Maybe you should back it off to around 5° or 6°.

 

[53guy]

do you think that if I get those tom woods high angle u-joints that I could still run 7.5 degrees?