Again, the compromise is in compliance If the roll bar is too stiff, you run the risk of snap oversteer ultimately compromising your corner entirely. Running a stiffer rear anti roll bar supports the rear and shifts balance to less UNDERsteer at the corner exit. Stiffer Rear Anti-Roll Bar: As you accelerate through the corner while the steering wheel is still turned, the rear ARB becomes very effective. A mild oversteer can also improve corner exit and require less steering input from the driver. The front will improve in compliance, which improves performance in brake zones and over bumps. Softer Front Anti-Roll Bar: Will shift the cars balance towards OVERsteer (or less understeer). A stiffer front bar will reduce compliance, so when one tyre hits a bump the entire front axle will be affected through a loss of overall grip. The compromise can be on bumps and/or braking. Stiffer Front Anti-Roll Bar: Will increase overall car stability and move the cars balance toward UNDERsteer. Running stiffer roll bars and softer springs will lessen roll, while maintaining good tyre contact on poorer surfaces. For example, a bumpy, rough surface will favour a softer spring, however our lack of roll bar means you will require a stiffer spring. The downside to this is that you are trying to control roll, ride and traction with only one method of adjustment. Some cars have no anti-roll bars at all, in which case any tuning of roll stiffness must be done with shock/spring adjustments. This allows you to tune your damper and springs with less compromise from body roll. Some cars only have a front anti-roll bar, and on some cars, the rear bar can be disconnected. If both bars are made stiffer by the same amount, the load transferred will remain the same, but overall chassis roll will be reduced, which may require a camber adjustment. A stiffer anti-roll bar will increase the load on the outside tyre on that axle. The job of the anti-roll bar is to adjust the understeer to oversteer balance of the car during cornering, which it does by altering the load that transfers to the outside tyres at the front versus the rear.
FWD CIRCLE TRACK CROSS WEIGHT PATCH
The amount of the roll needs to be controlled in order to keep the contact patch and the camber of the tyres at their most effective. What does an Anti-Roll bar (ARB) do?Īs a car turns, the cornering forces cause the car to roll away from the inside to the outside of the corner.
FWD CIRCLE TRACK CROSS WEIGHT DRIVER
Steering inputs must increase, and the driver will notice less nervous behaviour from the car. Some describe it as the front washing out. Understeer is where the front of the car pushes onward closer to the trajectory the car was originally traveling rather than where the wheels point. The rear of the car will lose traction, brake away and in extreme cases induce a spin. Oversteer is where the front of the car turns as directed by the driver via steering input, however the rear of the car will want to travel along its original trajectory, often described as the rear trying to overtake the front. Vehicle setups are variable for a variety of reasons, ranging from weather, driver preference and racetrack characteristics. Start with our guide and tips below. Given the range of adjustments that can be made to a track or race car, to find that sweet spot of optimum performance, handling, and reliability, it can be difficult to know where to start.
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