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Old 06-05-2018, 02:40 PM   #44
gtengr
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For everything that spins in the drivetrain, the amount of horsepower released from inertia changes is a result of the difference in power that it takes to accelerate that part from rpm 1 to rpm 2 in time t. The time it takes for the car to accelerate itself usually makes the amount of freed power from rotating part inertia changes a negligible amount. For the driveshaft it is essentially 0. It could be weightless and the biggest benefit to acceleration would still be the static weight loss.
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