[Rick Parker]

Plain and simple, the disc and thus the input shaft is continuing to spin while the pedal is depressed. Complete release of the disc is measuresd in "Thousandths" of an inch within the bellhousing. The pressure plate with a hydraulic slave is self adjusting and if proper travel (release stroke) is not originally designed into the application it will never be able to be obtained by any amount of adjustment. No two set of disimilar components (clutch disc/pressure plate) will require the same travel for complete release. Thats why there is in reality a range necessary to work properly. In the case of Hydraulics it's a matter of juggleing the diameters of the slave and Master without creating over travel at the throwout bearing interface. Once obtained it's a happy moment.