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Author Topic:   Weight Jacks.
Dirt Roller

Total posts: 5
posted July 14, 2001 11:05 PM UIN: 3107810
Well we took everyones advice here from this board and we raised the panhard bar in my bro in laws modified, and it helped get rid of the push immensely. He went from a bad push to real good through entry and the middle, to a little loose coming off. Now we are looking at tuning with weight jacks. I race street stocks, which dont have the jacks, so I am a little lost on what their exact function is. My thinking is, for example, going up on the left rear will help transfer weight the the right front. Correct, or no? Turning the weight jacks doesnt really move any weight, correct? But it does help it transfer? Any help ya'll can give is appreciated. He also got some scales this week so we can come back with some readings here pretty soon. Again the car is a 3bar rear end car. Thanks


Dirt Roller

Total posts: 22
posted July 15, 2001 10:46 AM
Brandon, the function of the wieght jacks is to set desired cross wieght or the distribution of wieght, also to get desired ride height. Your correct when you adjust the wieght jacks it does not move any physical wieght, you have to do that, For example moving the battery to the other side of the car. You also asked about going up or putting a turn in the LR it will transfer wieght to the RF but it will also transfer wieght to the LF and RR. When you start scaleing you want to achieve 1 of 3 things, desired cross wieght, left side wieght, and rear wieght percentages that work for your car. And before you start jacking Its important to know you dont want your initial ride hieght settings to change when you start jacking wieght. So in order to keep your ride hieghts at thier initial settings when you start jacking wieght around, you need to adjust all 4 corners of the car , for example if you think you need more cross wieght you would put a turn in the RF and LR and you would take a turn out of the LF and RR, by doing this you will get more cross wieght but your ride hieghts will still be at the initial settings. I hope this is the information you were looking for. sorry guys, sometimes Im not to good at explaining things, I went back and reworded my post.

[This message has been edited by millerlt3 (edited July 16, 2001).]

Dirt Roller

Total posts: 18
posted July 15, 2001 11:49 AM
just a correction you cant change left side or rear weight with jacks to change those percentages you must physically move weight.

Dirt Full Roller

Total posts: 26
posted July 15, 2001 03:17 PM
The only thing a weight jack does is adjust cross weight,and set ride heights.If the car is just a little loose coming off,add a little rear weight,about 25 or 30 pounds and go from there.Keep us posted.

Dirt Roller

Total posts: 18
posted July 16, 2001 10:44 PM
The car was really pushing bad. I thought it might have been me so I tried to go high and low at fast and slow entry spedds but it always skated up the track. So we raised the weight jack in the lr, raised the panhard bar on the right side 1" and lowered the rf air pressure by 2 lbs. The car felt a lot better but It still feels like I have to use the throttle to horse the rear end around. We have no lead in the rear. SHould we try to lead the lr a bit or should we look somewhere else first. I will post our entire setup later this week after I make some repairs( rookie mistakes). Thanks for help .

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