Re: PST CF Driveshaft...mmm
It's also rotational mass so it has the same effect as putting a lightweight flywheel in a manual transmission. More power can be transmitted from the engine to the wheels.
Rotating weight is is approx 10x. If you are saving 5 lbs then you are saving the equivelant of 50lb of dead weight. This is why the super stock classes use light weight tranny drums/parts, light drive shafts, gun drilled axles, Light weight flywheels, light balancers, lightened cranks, light wheels, etc. Then they add back the required weight needed for their class in dead weigh somewhere else in the car. If they can save 10# of worth of rotating weight it may be worth the equivelant of 100# saving of dead weight. 100# of dead weight can be a 10th of a sec better off their time.
John