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Driveline vibrations have proved troublesome at 190-plus mph, and with John diligently calculating all gear ratios and tire speeds, it was decided a carbon-fiber driveshaft was necessary to handle the 9,408-rpm driveshaft speed! This blurring speed is reached using 3.73 final drive gears, 0.62:1 Sixth gear in the T56 gearbox, and 5,833 engine rpm. The custom driveshaft is from Precision Shaft Technologies. Besides being lighter, this driveshaft is also safer because it will shatter before pole-vaulting the car should it come loose. View Related Article
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