Fat Arnie
New Member
- Messages
- 428
I do not believe the car measures the clutch slip at all. It measures wear using a transducer linked to the release bearing throw between disengaged and fully engaged. Adjusting your POS however also effects your clutch wear values. I have my POS at 3.7 which seems to be far lower than most, but I now get really good clutch bite without the car rolling back - and a really punchy take off if I hit the gas quickly.
The other thing around the POS calibration is that according to Maserati the POS calibration looks at how much drive gets transferred to the clutch when in neutral. There is an RPM sensor on the first motion shaft of the gearbox (propshaft in this case) and the idea is it should not spin. I found that if we set my POS really low at 3.4 so there was a big clunk when going from N to 1 this RPM signal failed to detect anything. Got to say the changes were much snappier like that, but the car would sometimes stall if you were driving it gently and trying a hill start.
Its all a matter of taste. The F1 box is sluggish at best compared to a proper mechanical race sequential, but messing around with its calibration will sharpen it up nicely. That said, if I very buy a GT (not sure I can live with the additional 400kgs over a GS, the wallowy ride and the lack of Larini noise my GS has - not tom mention the AP stoppers) I'd go for an auto. The 2009 on auto box in the 4.7 cars actually has a really good change and disables kickdown in sport mode so its actually a better shift than the MCS in my opinion.
The other thing around the POS calibration is that according to Maserati the POS calibration looks at how much drive gets transferred to the clutch when in neutral. There is an RPM sensor on the first motion shaft of the gearbox (propshaft in this case) and the idea is it should not spin. I found that if we set my POS really low at 3.4 so there was a big clunk when going from N to 1 this RPM signal failed to detect anything. Got to say the changes were much snappier like that, but the car would sometimes stall if you were driving it gently and trying a hill start.
Its all a matter of taste. The F1 box is sluggish at best compared to a proper mechanical race sequential, but messing around with its calibration will sharpen it up nicely. That said, if I very buy a GT (not sure I can live with the additional 400kgs over a GS, the wallowy ride and the lack of Larini noise my GS has - not tom mention the AP stoppers) I'd go for an auto. The 2009 on auto box in the 4.7 cars actually has a really good change and disables kickdown in sport mode so its actually a better shift than the MCS in my opinion.
