sawyer klegr Posted September 10, 2018 Posted September 10, 2018 This lego GBC miniloop uses two lego gear racks to lift the marbles up, then they get dropped on to a switch mechanism that sends them back to the start again. The switch mechanism is fairly reliable for most of the time but sometimes when it has been running for a long time it can get stuck. The miniloop can be powerd by hand but it is quite hard to go fast enough to make the balls fall off of the platform. The LDD file is here. Quote
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