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As for our Ford Fiesta that kicked ass at autocross, it again fell to A SERIES of chassis braces. There was huge weakness in the front crossmember at the point in which it connects to the actual unibody of the car. The rear torsion beam suspension was also in adequate. We created a torsion bar which essentially shortens up the lever arms on the torsion beam(has similar characteristics to an rsb) This added some oversteer to the car which in combination with our front crossmember brace, I brace, and Lateral braces caused a reduction in his times. Ill be honest. The other drivers that day werent exactly what id call The Stig..but he still did excellent and drew quite the crowd.
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