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![]() His overall weight distribution and setup may be very different from yours, especially the front-to-rear percentage of weight. Don't try to match your crossweight to a competitor that is running well. Move the weight jacking devices or shim the springs in a stocker.5. Don't move weight around in the car to effect changes to the crossweight percentage. That is how I learned about the different ranges.4. And don't try to run the low range on the flatter tracks with bite-off problems like I did at one time. Don't run the high crossweight range on high-banked tracks unless the banking falls off abruptly and there is a problem getting traction off the corners. The old way of jacking up the rear end with a large socket between the jack and the rear differential pumpkin and seeing how far off the ground the RR tire is when the LR tire is barely touching is way out of date.3. Don't guess at the crossweight percentage in your car. Be open-minded in order to find a better combination if that is what you need.2. Don't build your setup around a particular crossweight percentage just because you have always run that number. Tire stagger, tire pressure and firmer springs will also change cross weight percentage measurements, as they modify ride height and cross weight distribution is a function mostly of ride height.Some Weight Don'ts:1. The idea here is to get the ideal cross weight percentage while not changing ride height very much. In the example above of a 52 percent distribution, you can lower the right front or left rear an increment or two, then raise the left front or right rear an equal increment. Ideally, you want to raise or lower one side to get half of the desired adjustment and then move to the opposite side and lower or raise (opposite what you did on the first corner adjustment) an amount equal to the adjustment on the other corner. For example, if your cross weight percentage is 52 and you want to get it down to 50, you need to lower the right front or right rear and/or raise the left front or right rear. Cross weight is adjusted by raising or lowering one or more corners of the vehicle. You don’t want the weight you’re adding to the left front to also add weight to the right front or either rear wheel.Īdjusting cross weight percentage isn’t done by adding or subtracting weight in the vehicle. ![]() Not getting that ballast as far into the corner or out over the edge as possible allows part of that weight to be felt on the other side. For example, if you need to increase the vehicle’s rear weight, place that weight as close to the bumper as you can and still mount/secure it firmly. When you need to adjust static weight distribution, make sure the ballast/weight you’re moving around is as far to the side or corner needing adjustment as possible. If you have to adjust your static weight, make sure you do so in a manner that fits in the rules. If the class in which you’re racing allows it, you can also adjust weight distribution by moving components such as the battery and fuel cell or fire bottle. Static weight distribution can only be changed by adding or removing weight where needed, usually by adding or removing ballast from the front or rear centerline of the vehicle.
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