LEGO GBC 8 3D rendering

LEGO GBC 8 – 5 Modules – 3D Building Instructions


Detailed 3D building instructions of the LEGO GBC 8
– 3D building instructions
– xml part list (To import into Bricklink)
– html building instructions
– read me file
– and more

Product Description


This is not PV-Productions first outing with the LEGO GBC concept — This is already the 8th GBC build. Some of the past ones have included ball launchers, ramps, elevators, grabbing claws, and more. This time they have gone for a very ambitious build consisting of elevators, moving ramps, and a crazy undulating bridge. There is also an incorporated Lego NXT that allows to track data about system performance and control the whole thing with an Android app.

This new GBC consists of about 2,000 pieces, which is fewer than some previous builds. The contraption is powered by 2 XL Legomotors — one for all the modules, and one for the airpump. The mechanical energy from the motor is transmitted to most of the modules via gears or a network of strings woven through the blocks.

Possibly the coolest aspect of this GBC is the Sinusoid ramp at the beginning. Watching it undulate while suspended by a network of strings its kind of mind boggling. It must have taken a good long time to get it timed correctly.

Below is a walkthrough of the design. You can follow along with the gallery to see each module up close.

  • Stop-go mechanism 1: Stops balls and let them go by at the right time.
  • Sinusoid: Moves the balls by making a sinusoid motion.
  • Stop-go mechanism 2: Stops balls and let them go by at the right time.
  • Elevator: Lifts the balls to a higher level. Every time 3 balls can fit in the cabin.
  • Bridge: Leads the balls of yellow tower to the blue tower. When the elevator is down the bridge will go up and when the elevator is up the bridge is down.
  • Stop-go mechanism 3: Stops balls and let them go by at the right time.
  • Vertical pushers: Pushes the balls in a vertical way up.
  • Color sensor: takes measurements of the balls.
  • Ball pump: Pumps every time one ball. A new ball takes a place beneath another ball and then pushes them up.
  • Android app: Controls the LEGO GBC.
READ also  LEGO GBC Lift Module 3D Building Instructions

Maybe Lego will finally make one of the GBCs a reality?




Did you also see LEGO GBC 10:

LEGO GBC 10 – 5 Modules – 3D Building Instructions


Building instructions

To open the 3D building instructions you need to download and install LEGO Digital Designer for free.

NOTE 1: The LEGO NXT is only for counting the balls so not really needed for this GBC.

NOTE 2: Use the XML file to upload the partlist of LEGO GBC 8 to your Bricklink Wanted List. Open with Notepad
and copy/paste the text to Bricklink.

NOTE 3: You may not reupload the building instructions!


Connect mobile to NXT

Visit this page to get more information.

Count the balls in your GBC

Visit this page to get more information.


Notes blue tower



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