Visit The Dirt Forum for More Information

Author Topic:   bite
posted June 08, 2003 10:39 PM
less air pressure and less stagger ought to help.

posted June 08, 2003 11:28 PM
less air pressure and less stagger ought to help.

posted June 09, 2003 01:47 AM
really depends on springs and cross weight and everything else that plays in, i would say between 100-150 should be close. what springs are you running, how much cross do you scale it with?

posted June 10, 2003 10:35 PM
Will less stagger help on leaf springs also?

posted June 10, 2003 11:57 PM
douthit yes it helps on any car by taking stagger out of the rear you add left side weight. usually i run less stagger and more air pressure on the rear by adding the air pressure it adds rear %

posted June 11, 2003 03:04 AM
yes i did mean lr weight but last time i checked any time you add air pressure it increases the weight on that corner so by adding pressure to the rears it changes the rear % adding the air changes the ride just like stagger does wich inturn chages %'s

posted June 11, 2003 08:41 PM
17j, The only ay I've found to change left or rear %'s is to ADD or MOVE weight. The way it is explained to me is that the center of gravity of the car could be found by putting a balance point under the car..which would be, on a dirt car, to the left of center and to the rear of center. Now if you've got that car balanced on that point, how will changing air, or springs, or stagger affect or move that point? If you increased the diameter of one rear tire the static weight on that tire will increase, but the other rear will loose exactly that number of pounds. Am I wrong on this one?

posted June 11, 2003 10:13 PM
thats what i just said if you do the same in bolth tires it will put more weight on the rears. when i scaled my car i was able to get 2 % gain just from adding air pressure to the rear tires. it's not the best way to do it but if your like me i can't run jacks or spacers,ballast,or offset wheels the only tool i have to use are air and stagger and fuel that why i run a 22 gallon cell and fill it up before the dry slick races

posted June 11, 2003 11:44 PM
Im going to have to agree with powerglides on this one. The ONLY way to change left or rear weight is to move or add weight. Yes if you add air to the left rear it will put more weight on that tire. but at the same time it takes weight OFF of the right rear and puts some on the right front. by adding air to both rears they just cancel the other one out. If this actually worked like you said the top guys would all be running 40PSI in the rears.

posted June 12, 2003 04:00 AM
we run a late model and can tell you that we have tried this on the scales.
the ONLY way to change left side weight or rear weight is to physically move a mass of weight in the car (ballast, fuel, battery ect)
by adding tire pressure you will change cross weight (LR bite) only.
Just like screwing up & down on a coil over or weight jacks. You cannot increase the amount of weight that the 2 left side wheels are holding by raising the ride hieght.
a good example is a four legged chair. if you sit in the chair and cut the 2 front legs down by the same amount, all 4 legs are still supportting the same weight. if you were to cut 2 legs diagonally opposite each other, the remaining 2 legs (diagonal) are holding all the weight.
Trust me, it is physically impossible to add L side weight or R weight without adding or subtracting some mass in the car. you can raise the air pressure in a tire and it will definitely change the cross weight.
on radial type tires i don't know how much change it will make to the cross weight but i know it makes a noticable difference with the softer racing tires.
don't forget that if you are using a radial tire, don't go too low with tire pressures as they deform too much and will come off the bead. there construction is designed for the street and consequently street type pressures will let the tire work properly.
hope this helps

Back to the Archives