Product
Code: APP0007
Price: 4 USD ( Order Form )
Files: 9 movies (512 X 384 pixels). Each movie is provided in AVI and Quicktime format.
Description: These movies show a Ravigneaux compound planetary gear set, used in automatic transmissions. It is made of two planetary geartrains sharing the same ring gear (in the movies, the ring gear has been split in two parts to better see the inner mechanism). Each transmission ratio is shown by three movies: perspective view, front view and rear view.
The two yellow ring gears turn together. All planets (short and long) are on the same planet carrier.
The animation at right is a free demo, reduced in size.
Image from one each animation (reduced size).
| Planets (long and short) | 12 |
| Little Sun Gear (magenta) | 36 |
| Large Sun Gear (orange) | 60 |
| Ring Gear (yellow) | 84 |
| Gear | Input | Output | Gear Ratio | |
| 1st | Little Sun Gear (magenta) | Ring gear (yellow) |
Planet Carrier held stationary | 2.3 : 1 |
| 2nd | Little Sun Gear (magenta) | Ring gear (yellow) | Large Sun Gear (orange) held stationary | 1.6 : 1 |
| 3rd | Little Sun Gear (magenta) | Ring gear (yellow) | All parts turn together | 1 : 1 |
| 4th (overdrive) |
Planet Carrier | Ring gear (yellow) | Large Sun Gear (orange) held stationary | 0.6 : 1 |
| Reverse | Large Sun Gear (orange) | Ring gear (yellow) | Planet Carrier held stationary | -1.4 : 1 |
Related physics animations:
Planetary Gear Set |
 Cam |
 Simpson Counmpound Planetary Gearset |
 Gears |
