The friction bands are sometimes employed for manually selected gears (like reduced selection or reverse) and operate on the planetary drum's circumference. Bands are not used in the event the generate/overdrive range is selected, the torque currently being transmitted from the sprag clutches in its place. Dual-clutch automatic gearboxes commenced https://gearbox-auto48259.ampblogs.com/facts-about-gearbox-auto-revealed-70494535