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Script for Geartrain Module
This shows a design for a way to use multiple stacked turntables. The premise of this method is that each level is turned by the level beneath it, and each level contains all of the gearing to drive the level above it.
A single central shaft provides the power to drive all of the levels. A large number of gears of different sizes takes the speed of that central shaft and converts it to a slower speed to run the level above. The final gear runs a chain that goes to the turntable above.
This type of design needs to have very low friction to work well — and it does, as you can see here — I can run it backwards by turning the slowest part.
There is also a bevel gear and a radial axle that goes out to where the planet would be. This allows us to have one or more moons that move around the planet.
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