I've created a Lego Digital Designer model for the Ferris wheel of the Lego GBC Kugelbahn #5.
Find our implementation of the Akiyuky Train design of the Kugelbahn #5 here. The blog post also contains downloadable LXF files for LDD.
Supplement: Due to an issue with LDD (version 4.3.8 and 4.3.9, Mac OS) it might happen that 6 parts are removed when opening the LXF file again. The parts are perfectly connected in the virtual model and in the real world model. I've no idea why this happen.
The following image shows the central parts (6558) removed by the program circled orange. These parts and one of the attached liftarms (32525) to these parts are central component of the wheel to work correct.