GBC Tower

Great Ball Contraption Tower II

The Great Ball Contraption Tower II is the larger sequel to the original GBC Tower from 2019. The tower uses eight Akiyuki modules distributed vertically across two parallel 7-foot structural frames. The tower also uses several additional modules and techniques from many GBC builders from across the globe – an homage to the creativity of the GBC community. The result is a giant MOC with more than 45,000 LEGO® bricks!

Instructions

168 steps, 268 pgs,
238 MB

GBC Tower II

All modules,
45,566 pcs

Module M01

Snake lift base
6,886 pcs

Module M02

Spiral staircase,
2,959 pcs

Module M03

Fork,
2,070 pcs

Module M04

Cup to cup,
2,670 pcs

Module M05

Spiral lift,
2,654 pcs

Module M06

Stuck ball lift,
2,147 pcs

Module M07

Catch and release,
2,057 pcs

Module M08

Cycloidal drive,
4,603 pcs

Module M09

Strain wave gearing,
5,715 pcs

Module T01

Sign & mass damper,
1,766 pcs

Module C01

Control lab stand,
654 pcs

Module C02

Computer case,
188 pcs

Module R01

Ramp,
310 pcs, 4x

Module R02

Splitter,
233 pcs

Module S01

Snake lift,
653 pcs, 4x

Module S02

Snake lift motor,
320 pcs, 4x

Module S03

Snake lift exit,
164 pcs

Module A01

Lift anchor,
52 pcs, 16x

Module A02

Floor 4 anchor,
446 pcs, 2x

Module D01

Porta potty,
237 pcs

Module D02

Office,
359 pcs

Module D03

Saw,
536 pcs

Module D04

Lift,
743 pcs

Module D05

Crane,
1,100 pcs

Module B01

Bin,
183 pcs

Software

Control lab IO,
Win/Mac/Linux/Pi

Module X01

Service ramp,
596 pcs, optional

Module X02

Reservoir three,
337 pcs, optional

Module X03

Reservoir four,
330 pcs, optional

Module X04

Reservoir ramp,
54 pcs, optional