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Abstract

The scope of this project is to design and build a set of adjustable traction bars to improve drag racing performance. The quick acceleration at the beginning of a race can twist the rear drivetrain in a manner that can cause catastrophic structural failure. A factory designed drivetrain is not able to withstand the additional stress during a race or transfer the power to the ground well. Traction bars are a well-established fix for this problem. Traction bars connect the rear axle to the frame, providing extra support for racing situations. However, current aftermarket traction bars can only be used for a single vehicle make and model. Also, these bars add permanent rigidity which can compromise vehicle safety during daily driving. The traction bars designed in this project correct both of these limitations. They will allow for smooth and safe driving during daily commutes, a universal fit for any pickup truck, and give the driver the ability to put tension on the axle as desired for a race. The bars connect the rear axle and the frame via mounting brackets. The rear brackets are bolted to the bottom of the leaf spring U-bolts. The front brackets are bolted to the side of the frame underneath the cab of the pickup. The parts were fabricated and assembled in USI's AEC and fit tested on a 2001 Dodge Ram 2500. The components were modeled in computer simulations for strength, and physical tests were completed to verify.

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