LEGO GBC - Mega Stepper - Great Ball Contraption with Free Building Instructions

Mega Stepper

Looking for a cool, compact and easy to reproduce Great ball Contraption module ? Then the Mega Stepper GBC module from Staffan “Stork” Ihl is what you’re looking for. This compact LEGO ball machine is made with simple LEGO TECHNIC bricks and can therefore be easily customized in several colors. Your favorite basketball and soccer balls are elevated to the top of the module thanks to a platform moving up and down. The inner mechanism is relatively simple but smart: a liftarm is rotating slowly, pushing the platform up. Gravity and the second part of the rotation are doing the rest to see the platform going back down also slowly to pickup the GBC balls. A wall is preventing the balls from exiting the module until they reach their final destination. Reproduce several from these nice GBC modules thanks to free building instructions provided by Stork and do a full colorful chain of them.

Original design by: Stork
Number of parts: 246
Complexity for building:
Price for Building: €€, affordable

WATCH THIS LEGO GBC MODULE IN ACTION

Mega Stepper, on Stork YouTube channel

 
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One comment

  1. I made this, and the stepper struggles to go up and can’t fall back down on its own. I rebuilt it twice, but I can’t get rid of the friction on the lift. I made sure the axles are new and straight. Anyone else having this problem?

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