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Building a long gear train using 186 Lego gears. Many different types of Lego gears are used. Enjoy! Read more details of the Lego machine here: This was inspired by Daniel de Bruin's “universe's biggest gear reduction“: The finished gear ratio: 10341796308487334800992832804222885104773611498499997696000000000000000000000000000000000000000000000:1 or or GOOGOL:1 Rotation time for the last gear: 52433879932503535381614991275498187972589101825233846406570841889117043121149897330595482546 years or years Formula for the gear ratio: 24/8 * 40/8 * 40/8 * 40/8 * 60/1 * 12/1 * 168/1 * (140 / 8 1) * 141 * 20/12 * (40/8)^20 * 20/12 * (24/1)^20 * 56/16 * (36/1)^10 * (40/1)^18 * 15/9 * 56/1 List of gears used: 27x Gear 8 Tooth [3647] 1x Gear Expert Builder 9 Tooth [g9] 6x Gear 12 Tooth Bevel [6589] 2x Gear 12 Tooth Double Bevel [32270] 1x Gear Expert Builder 15 Tooth [g15] 1x Gear 16 Tooth [94925] 2x Gear 20 Tooth Bevel [32198] 23x Gear 24 Tooth [3648] 10x Gear 36 Tooth Double Bevel [32498] 49x Gear 40 Tooth [3649] 2x Turntable Large Type 2 [48452cx1] 1x Turntable Large Type 3 [18939 / 18938] 8x Gear Rack 11 x 11 Curved [24121] 1x Gear, Hailfire Droid Wheel [x784] 1x Gear Worm Screw, Short [27938] 51x Gear Worm Screw, Long [4716] For those wondering, the visual effect I used in the end montage is called Find Edges, comes with Adobe Premiere 14. Music (used with permission): Alpha Centauri B by Anders Enger Jensen
