Variable Gearbox - Ravigneaux Gearset 

Variable Ravigneaux gearset, 5 speeds via clutches but up to 7 are possible (6 forward, 1 reverse). Modeled, animated and rendered in Maya in 1080p 50fps.
0:41 First gear forward, orange carrier is blocked, engine is connected to the red carrier and blue is idling.
1:05 Second gear forward, blue carrier is blocked, engine is connected to the red carrier still and orange is idling.
1:30 Third gear forward, all assemblies connected to engine which gives a 1-1 ratio.
1:56 Forth gear forward, blue carrier is blocked, red is idling and engine is connected to orange carrier.
2:23 Reverse gear, orange is blocked and engine is connected to the blue carrier, red is idling.