Incredible Great Ball Contraption accelerates tiny LEGO balls at 1000 rpm [Video]

If you've never heard of aGreat Ball Contraption(or GBC for short),you've probably never been to a LEGO convention.The term describes a popular theme of complicated LEGO machines built by fans,which can interconnect to continually pass LEGO soccer balls and basketballs around in a mesmerizing fashion,and they're a mainstay of LEGO fan conventions.This particular GBC is built byBerthil van Beek,who was inspired after seeing anotherfan's marble run.Berthil's machine shoots the tiny balls up to the top of the run,where they hurtle down and are recycled.

Akiyuki Marble Run with ball shooters



Berthil tells us his machine uses 63 pieces of 32L Technic flex tubing for the run,for a total of 16 meters of track.

Akiyuki Marble Run with ball shooters
The Technic flywheels spin at 1000 rpm to accelerate the balls with enough velocity to reach the top of the run.

Akiyuki Marble Run with ball shooters

The entire machine runs on one LEGO 9V train regulator.

Akiyuki Marble Run with ball shooters


If you like this Great Ball Contraption,check out the hypnoticLEGO Strain Wave GBCwe featured recently.