Sixth Gear
In Sixth gear, the OD clutch (1) is applied to drive the front carrier/rear annulus assembly. The OD hub is splined to the front carrier/rear annulus assembly. When the OD clutch is applied, the OD hub and front carrier/rear annulus assembly are driven. The 2/4 clutch (2) is applied to hold the front sun gear. Overdrive can be achieved using the front gear set. The rear carrier/front ring gear/annulus rotates as an output member. The rear carrier/front ring gear/annulus rotates as an output member with an overdrive gear ratio of 0.69:1.
Power from the main centerline transfers to the underdrive compounder annulus by way of the transfer gears and the underdrive shaft. The direct clutch (3) is applied to drive the underdrive compounder sun gear at the same speed as the underdrive annulus. With two members driven, the underdrive compounder carrier rotates with a direct drive.
The main centerline ratio of 0.69:1 is multiplied by the underdrive compounder centerline ratio of 1:1. As a result, the ratio through the entire gear train to the final drive in Sixth gear is 0.69:1.