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I've been a GNX fan since it came out. The functional description comes a bit short of the engineering involved: " Its primary function is to prevent rear axle windup and resultant wheel hop and traction loss." Yes it acts as a torque snubber, but for a stock GNX, it also decreases the unloading of the left rear tire during launches, so that both rear tires have close to even loading. Without it, you'd see the reaction to the high transmission output shaft torque ON the chassis, trying to lift the front left by way of forces at the engine/trans mounts, and the left rear unloading that tire by way of forces where the springs attach to the chassis, due to the clockwise (front view) torque applied to the rear axle housing. With the special GNX torque arm offset to the right, an offset lifting force is provided to the chassis at the forward end of the arm, that tends to reduce the chasis rotation, and provide a more balanced load on the rear tires. When I modeled a simple rectangular frame with 4 springs & the appied output shaft torque with the GNX torque arm, the predicted load at the rear tires was balanced, and the rear end did not squat but lifted a bit. Kevin K

By: Kevin Kelleher
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