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1. #Vehicle setup ride height vs. cross weight how to#
2. #Vehicle setup ride height vs. cross weight driver#

Calculate the cross bite by adding the RF and LR and dividing by the total weight of the chassis. For the 600cc chassis, 61-68% works best. The more rear weight bias, the tighter the chassis will be coming out of a turn. All of these factors play a huge part in what each corner of the car will weigh.Ĭalculate the rear weight bias by adding the rear weight (LR and RR) of the chassis and dividing it by the total weight of the chassis (LF + RF + LR + RR). Also, keep the same amount of fuel in the tank, unhook the shocks if you have a torsion car, Make sure you have the same size tires on each time, same tire offsets, wheel offsets, and set the tire pressures to race ready levels.

#Vehicle setup ride height vs. cross weight driver#

Always scale the chassis with the driver sitting in it and in the spot of the garage each time. But if you want to scale the car this is what I recommend. It does not tell us anything about what the car is going to do once we turn the car, accelerate forward, or brake, this is when all the weight transfers and factors like center of gravity height, roll centers, tire offsets, shock dampening forces, and spring rates come into play. It tells us how fast the car is when it is sitting still, like in the garage. Remember that scaling only tells us a small part of the story. Q: What would be a good weight distribution to start with on a micro sprint? Front to rear and left to right.Ī: I can't just give numbers without telling my whole story. On a torsion front car you would add about 1/3 turn. On a coil car one turn =1/8" in height so this can be compensated by adding 1-1/2 turns to the side of the front with the smaller tire. 159" (not quite 3/16") difference in ride height. As you can see even an inch of front stagger will only result in a. Since stagger is circumference to find the diameter we must divide it by pi, which is 3.14, then we must divide the diameter by 2 to find the radius.

#Vehicle setup ride height vs. cross weight how to#

I will show you how to calculate the change in ride height.

Thanks.Ī: Because front tires rotate independently, unlike the rear tires, the difference in circumference (stagger) will only change the ride height, it will not make the car turn. If this is true, does it matter if both front tires are the same size? If the right front is bigger, is this more like adding cross weight? Please explain what the left front does. Q: Mike, you mentioned earlier that front stagger does not help you turn.