They've already been through a few iterations.

 

bump

 

you guys might want to look into the reason for using carbon driveshafts. yeah they are result in lower drivetrain inertia but more importantly (especially for our application) they act as a shock absorber for the diff. A steel shaft will not absorb much shock if any while a carbon shaft can twist and act as a spring.

 

I always wondered if anyone made one for the S2k after picking up and holding a stock 350Z DS. They are CF as well and weigh practically nothing!

 

Well,
the fact is that any loss of weight on rotating parts is always better. (with very few exceptions- you don't wanna loose heat capacity but that's another subject)

For rotating parts however, decreasing weight benefits are directly proportional to the distance where you decrease the weight from the center of rotation. For a driveshaft, the distance is short. The radius of the shaft is about 35mm (~1.5")

Just as an example:
How much torque does it take to rotate a shaft weighing 16.2 lb (7.35 kg) from 0 to 2500 rpm in 1.5 seconds? (assuming 1st gear take off, reach 41 mph, 25

 

jesus

 

lol - I was very bored at work this morning....