Single-cylinder vacuum engine as seen in this video. Uses a Watt's
LEGO Vacuum Engines Suck!
GBC General Discussion - Page 39 - LEGO Technic, Mindstorms, Model
Chris's MOC Engine - The Sci-Fi Guys
BrickExperimentChannel Brick Experiment Channel
Chris's MOC Engine - The Sci-Fi Guys
Building a LEGO® Mortal Engines MOC!
Chris's MOC Engine - The Sci-Fi Guys
BrickExperimentChannel Brick Experiment Channel
Chris's MOC Engine - The Sci-Fi Guys
LEGO MOC inline 2 cylininder vacuum engine by ZH BRICKS