From RitchieWiki(Redirected from Powershift transmission)
The powershift transmission is geared towards a smoother, faster, more convenient ride. Powershifting or flatshifting refers to a clutchless shift that uses a lever to move from gear to gear while maintaining acceleration.
 Double Transmission
Powershifts have two transmissions in one, operated by a dual clutch. They have twin wet clutches and a number of gears, which make it easy to switch from one gear to another automatically. Both of the wet clutches work on different levels without the help of the other. One clutch controls the odd-numbered gears and the other controls the even-numbered ones. The result is a “continuous flood of power without any disruption in power delivery or any torque loss.”
 How it Works
Each of the two wet clutches have their own input shafts which spiral within each other. With the use of hydraulics, the clutch can operate the gears. Clutch plates rub together causing friction, which is pushed by a hydraulic piston. This allows the gears to change automatically without torque loss.