Matt wrote: "What do you mean by this? Do you mean that the spring center is in the flywheel rather than the clutch disk? By this I mean the springs that are oriented circumferentially and allow the disk to rotate slightly in relation to the splines so as to absorb rotational shocks."
Pretty much. I've never actually tried to take one of these flywheels apart to see what the dampers look like, so I'm not sure that the mechanism looks like it does on the clutch disc. In this system, the clutch disc is solid-- the fibers are attached to the disc, which is part now essentially part of the hub, rather than being attached via the dampers (the circumferential spring assemblies). The flywheel has two parts, joined by a damper, and it's possible to turn the transmission side of the flywheel about 20 degrees or so with respect to the engine side.
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