The friction bands in many cases are employed for manually chosen gears (for example lower assortment or reverse) and function to the planetary drum's circumference. Bands are not used if the push/overdrive vary is chosen, the torque getting transmitted by the sprag clutches instead. Inside-combustion engines run at significant speeds, https://codycrdnz.wssblogs.com/33748295/gearbox-auto-fundamentals-explained