Share LEGO GBC module : Tilted Rotors04:33 0 Share 0 Likes 0 Dislikes Published on January 26, 2017 A Lego Great Ball Contraption (GBC) module. The ball spilling is not zero. Building time : 45 hours. Category: #Video Submitted by: Admin Tags:GBC, Lego, module, Rotors, Tilted About The Author Admin Related Posts