Well, ...

it is not easy to figure that out. I followed different ways to look at it, but I can not provide a fitting point of fiew.

At least I told myself: "OK - I don`t know how - but I can describe what I can see".

Please have a look at this little .exe peace of software to understand the movements in the device. Further on you can have a look at this text - I`m sorry - it is in german, but there are also some pictures.

good luck!

Description	Last Change	File Size	Downloads
Cycloid.exe	Jun 16 2009	52 kB	774
Have a look at this little programm to understand the movement of the Moon-wheigts. It shows their way without considering the movement of the controlling!