| Year | 1997 |
| Date | 21-Nov |
| Volume | 179 |
| Issue | 4,055 |
| Page | 636 |
| Category | Workshop |
| Part | 3 |
| Title | The Design of Epicyclic or Planetary Gearing |
| Author | Len Snell |
| Notes | Further epicyclic gearbox details. Torque reaction, idling speed, clutching torques, closed trains, meshing of twin planet gears in series, closed trains using compound planet gears, compound planet gears between annulus and sun, compound planet gear meshing with twin sun wheels, load sharing |