The friction bands are frequently used for manually selected gears (like small vary or reverse) and work to the planetary drum's circumference. Bands usually are not applied in the event the generate/overdrive vary is selected, the torque becoming transmitted via the sprag clutches as an alternative. Compound Planetary Gearset This https://sergiostsrp.aboutyoublog.com/37425057/how-gearbox-auto-can-save-you-time-stress-and-money