Build & Test Lego Gearboxes: 2, 4, 6, 8, 12-speed

Each gearbox is built from scratch and then tested for speed and torque. Flat layouts only (gears are on the same plane) for better visualization. Enjoy! 00:00 2-speed 01:09 2-speed with driving ring 02:31 4-speed 04:02 6-speed 05:58 8-speed with range change 08:29 12-speed with splitter 11:48 all gearboxes side-by-side 12:09 graphs Key Lego parts used in this video: Driving Ring 2L [6539] Axle Connector 2L [6538c] Gear 16 Tooth with Clutch, Smooth [6542b] Changeover Catch [6641] Changeover Plate [6631] Driving Ring Extension [35186] Check out a great resource on Lego gearboxes: ~3813/