Quaife ATB Differential - R53 R52 BMW MINI Cooper S
This Quaife Automatic Torque Biasing (ATB) Helical LSD differential uses sets of floating helical cut gear pinions that run in pockets and mesh during normal driving rather than using clutch plates. Should one of the driven wheels start to spin, the helical gears start to generate a torque bias thanks to the axial and radial thrust of the helical gear pinions in their pockets. The result is a progressive transfer of torque away from the spinning side of the axle to the driven wheel, which is now capable of transmitting a greater proportion of torque. The Quaife ATB Helical LSD differential's design produces a progressive transfer of torque away from the spinning wheel to the wheel that's capable of driving as a result the effect is far more benign to the driver. With the installation of the Quaife ATB in the BMW Mini Cooper S/JCW/GP front wheel drive chassis harsh snatching and torque steer are eliminated.