preload
 

hi help i have a chassis vega latter bar car .the guy that did have it 5f. so 120#s i weight 240 6f had to move seat back next to the tub the car truns right no matter what you do. do you thank i would need to ad weight to the right side

Put your butt in the car and have someone adjust the preload in the right bar till the front bolt slides in and out with no resistance. Lock her down and go race. If it still turns right then add right side preload one FLAT at a time till it straightens out.

George

done did that put all preload it dont change its like right side not even hooking at all i even check the spool the car dont just go to the right it turns soon as it moves if it was as simple as truning a bar i would be asking

Sounds like you have something binding in there. Those ladder bars should work very free. If you have access to a set of scales I would scale the car and make a preload adjustment with it on the scales and see if it makes a difference in the corner weight. If not then you definately have something bound up or broken as in the bracket pulling away from the rear end housing or something of that nature. It doesn't take but a flat of a turn to make a noticeable change with a free and properly operating suspension.

As far as just turning the bar thing...there's no way I can tell your experience level. You don't say so I can only start at the basics.

George

Are you giving it negative preload by chance?

Make sure this cars differential is in the car straight! it may be a tracking problem!!!!! David.

If one wheelie bar wheel hits down hard it will lift one tire and will rapidly steer the car to the other side. Or if bar was raidically out of pre-laod adjusting range that could also give more traction to one tire.

Ed

Not mentioned here is check the tire rollout, if one tire rolls out less than the other it will never track right no matter how much adjustment you put into it.

Just a thought.

Zip.

:shock:

Off topic, but I wanted to say how very impressed I am with your knowledge. I am a very green pro street hot rodder and am learning a ton here. thanks!

This is my first time on the forum and I have to ditto the last guy.Thanks for spending your time and putting some knowledge on us.Also,my car used to drift left,added a 1/4lb air to driver side tire and shot straight from there.Looking back now,I think it was a lucky fix to a rollout issue.Thanks again.

If negative preload was added, then the car would move more to the right then when you started. If adding preload did not break a chassis mount, odds are things are solid. Tire rollout would have to be pretty excessive to create the pull you are talking about. If I was a betting man, I would guess your entire rear end is out of square. This could be as simple as the rearend sitting in the car sideways right down to a bent rearend. I would encourage you to pull the rearend and check to make sure all is straight. While you have it out, inspect all your rearend brackets. Reinstall the rearend. If you have never squared a rear, make sure to have someone with you that knows what is going on. If you have a local chassis shop, get the car together and get it there to be scaled. Good luck to you.

What do you have as rear springs ?......if its pulling to the right...add a little rebound to the left rear spring ?

Brian