Why are bicycles stable? The most common answer is gyroscopic effects, but this is not right. This video was sponsored by Kiwico. Get 50% off your first month of any crate at https://kiwico.com/veritasium50 Huge thanks to Rick Cavallaro for creating this bike on short notice. Thanks to all the friends who participated in the filming. Rick was also responsible for the Blackbird Faster Than The Wind Downwind Cart. https://www.youtube.com/watch?v=jyQwgBAaBag Much of the information presented here on the stability of a riderless bicycle stems from original research at Delft http://bicycle.tudelft.nl/schwab/Bicycle/ and Cornell http://ruina.tam.cornell.edu/research/topics/bicycle_mechanics/overview.html This line of bicycle-balance research was initiated by Jim Papadopoulos: https://www.nature.com/articles/535338a Great videos on bikes and counter-steering: MinutePhysics: How Do Bikes Stay Up? https://www.youtube.com/watch?v=oZAc5t2lkvo MinutePhysics: The Counterintuitive Physics of Turning a Bike: https://www.youtube.com/watch?v=llRkf1fnNDM Why Bicycles Do Not Fall - Arend Schwab TED talk: https://www.youtube.com/watch?v=2Y4mbT3ozcA Today I Found Out: We Still Don't Know How Bicycles Work https://www.youtube.com/watch?v=YWsK6rmsKSI TU Delft - Smart motor in handlebars prevents bicycles from falling over: https://www.youtube.com/watch?v=rBOQp2uY_lk Andy Ruina Explains How Bicycles Balance Themselves: https://www.youtube.com/watch?v=NcZCzr9ExKk ▀▀▀ More References: TU Delft Bicycle Site: http://bicycle.tudelft.nl/schwab/Bicycle/ Bicycle stability program: http://ruina.tam.cornell.edu/research/topics/bicycle_mechanics/JBike6_web_folder/index.htm ▀▀▀ Special thanks to Patreon supporters: Luis Felipe, Anton Ragin, Paul Peijzel, S S, Benedikt Heinen, Diffbot, Micah Mangione, Juan Benet, Ruslan Khroma, Richard Sundvall, Lee Redden, Sam Lutfi, MJP, Gnare, Nick DiCandilo, Dave Kircher, Edward Larsen, Burt Humburg, Blake Byers, Dumky, Mike Tung, Evgeny Skvortsov, Meekay, Ismail Öncü Usta, Crated Comments, Anna, Mac Malkawi, Michael Schneider, Oleksii Leonov, Jim Osmun, Tyson McDowell, Ludovic Robillard, Jim buckmaster, fanime96, Ruslan Khroma, Robert Blum, Vincent, Marinus Kuivenhoven, Alfred Wallace, Arjun Chakroborty, Joar Wandborg, Clayton Greenwell, Michael Krugman, Cy 'kkm' K'Nelson,Ron Neal ▀▀▀ Written by Derek Muller Filmed by Trenton Oliver, Raquel Nuno and Derek Muller Edited by Derek Muller Music from Epidemic Sound and Jonny Hyman Produced by Derek Muller, Petr Lebedev and Emily Zhang