Designed for two balls, the Roue à Sky module from the French GBC builder Phi.L is a closed-loop Great Ball Contraption module with a mini Ferris wheel. Four trolleys are attached to the wheel of this ball machine: they will collect the balls at the bottom of the module, make them go around the Ferris wheel and release them once at the top of the module. The balls then slide down a ramp that runs along the inside of the module and reach back the starting point. You can reproduce this very stylish module thanks to free building instructions provided by Phi.L on Planet GBC.
Original design by: Phi.L
Number of parts: 583
Complexity for building: 
Price for Building: €€, affordable
Roue a Sky, on Phi.L YouTube channel
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