Model: G05 Double Planet and Gear Trains on Parallel Axes
In this model, a pair of ring and planet gear trains are coupled together on parallel axes. One ring gear rotates about the axis of the other planet gear. The planet and ring tooth numbers are 40 and 120 and 36 and 116 teeth respectively. The two smaller planet gears are coupled through a spider arm connecting the two planet gears. The model is designed such that several components can be grounded and the other elements moved. See models G-2 and G-3 for further discussion of planetary gear trains.

Francis Moon 2003-07-01

Reference :