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Video: how do bikes stay up?

The three mechanisms that allow riderless bikes to stay up - and the part that remains a mystery to science

"Perhaps more incredible than humans riding bicycles is the fact that bicycles can ride themselves".

Once set in motion, a bike can stay upright and, if knocked from one side, will steer itself so the wheel once again ends up under the centre of mass, allowing it to continue in the new direction.

But how does it happen?

As this illuminating video, by Minute Physics, explains, with a lone bicycle eerily heading off across a field by itself, it's down to three main mechanisms, which are all related to the bike's ability to steer and right itself, given enough momentum.

Although this helps explain the mechanics behind Bradley Wiggins' self parking bike, the exact combinations of variables which work to make the bicycle stay upright on its own still aren't known to science, leaving a tantalising degree of mystery. Enjoy!

 

Laura Laker is a freelance journalist with more than a decade’s experience covering cycling, walking and wheeling (and other means of transport). Beginning her career with road.cc, Laura has also written for national and specialist titles of all stripes. One part of the popular Streets Ahead podcast, she sometimes appears as a talking head on TV and radio, and in real life at conferences and festivals. She is also the author of Potholes and Pavements: a Bumpy Ride on Britain’s National Cycle Network.

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rootes | 9 years ago
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Here is an article on the same subject from Physics Today 1970

http://www.phys.lsu.edu/faculty/gonzalez/Teaching/Phys7221/vol59no9p51_5...

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hampstead_bandit | 9 years ago
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who would have thunk?

good stuff

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Spangly Shiny | 9 years ago
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So, if I want to make my bike less twitchy I need to tie a bag of sugar to the front of the front rack (that it doesn't have), is that right?

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