Quote:
69bossnine said:
Double clutching is for non-synchronized gearboxes. The 911 (as almost all modern cars are) is fully synchronized. Why are you bothering to clutch twice??
Because I can shift faster from 6th to 2nd for a pass if I use the engine to spin up the transmission than I can if I use the syncros to spin up the transmission. And obviously doing so places less wear on those syncros.
What's more, I can release the clutch faster when re-engaging the engine and transmission because I've already spun up the engine from the double-clutching I just did to get the transmission spun up. So I know that the engine is rev-matched to the transmission speed.
The end result is a
much faster and smoother downshift. Smoothness is important because it is less likely to unsettle the car.
Stephen