Timeline for Why doesn't a bike/bicycle fall if going with a high speed?
Current License: CC BY-SA 3.0
24 events
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| Jun 3, 2019 at 15:17 | comment | added | asmaier | This video shows, that if you lock up a bicycles steering it becomes unstable: youtube.com/watch?v=tQlLl_Fbpbg If you free up the steering the bicycle can self balance again. | |
| Oct 16, 2017 at 13:29 | answer | added | Wrichik Basu | timeline score: 2 | |
| Jan 9, 2017 at 17:35 | comment | added | Pirx | @james large Heh, I guess that would depend on how long that slope is... ;-) | |
| Jan 9, 2017 at 16:44 | comment | added | Solomon Slow | @Pirx; Yes, Unfortunately I was thinking of a rather narrow definition of "bicycle" when I wrote that. I am aware that you can build an unmanned, two-tandem-wheeled vehicle that stabilizes itself, but the kind of bicycle that I was thinking of will not stay upright indefinitely if you send it down a slope without a human rider. | |
| Jan 9, 2017 at 15:49 | answer | added | Pirx | timeline score: 10 | |
| Jan 9, 2017 at 15:30 | comment | added | Pirx | @james large Yes, some of the answers below contain some complete nonsense, and the by far most competent answer (by Andy Ruina) has one of the lower scores, with the highest-scoring answer being essentially wrong. Of course, you are wrong too: You indeed do not need a rider to stabilize a bicycle. Assuming the bike can maintain its speed (if it has a motor, for example), it can balance itself indefinitely, as proven by a multitude of toys and unmanned two-wheeled vehicles. | |
| May 22, 2015 at 13:21 | comment | added | Solomon Slow | Wow! So many contradictory answers! One thing is for sure though: A ordinary bicycle without a rider will not stay upright for very long at any speed. The bicycle does not balance itself (as some answers below suggest): The rider is part of the feedback loop. | |
| May 22, 2015 at 12:31 | history | protected | Qmechanic♦ | ||
| Nov 1, 2014 at 15:20 | answer | added | Calvin Hulburt | timeline score: -4 | |
| Jun 14, 2014 at 15:55 | history | edited | Qmechanic♦ | CC BY-SA 3.0 |
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| Jan 16, 2013 at 19:28 | history | edited | David Z |
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| Apr 13, 2012 at 18:42 | comment | added | nibot | Here's an interesting talk on the subject, from the point of view of control theory: * "[Bicycle Dynamics and Control][1]," by Karl Johan Åström, given at KTH in 2006 [1]:control.lth.se/user/karl_johan.astrom/Lectures/… | |
| Apr 5, 2012 at 9:26 | answer | added | andy ruina | timeline score: 27 | |
| Jan 8, 2012 at 18:45 | answer | added | Mike Dunlavey | timeline score: 4 | |
| Apr 14, 2011 at 20:18 | answer | added | nibot | timeline score: 23 | |
| Nov 26, 2010 at 17:02 | comment | added | Vortico | This question might be of interest to you. | |
| Nov 10, 2010 at 18:33 | history | edited | nibot |
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| Nov 10, 2010 at 17:47 | answer | added | sigoldberg1 | timeline score: 24 | |
| Nov 10, 2010 at 17:32 | answer | added | Adrian Mester | timeline score: 0 | |
| Nov 10, 2010 at 16:53 | comment | added | Arda Xi | Note that this isn't really physics related for the most part. When you ride your bike you constantly make tiny movements with your wheel in order to balance it, and the size these corrections need to be get smaller with momentum, as @David explained. | |
| Nov 10, 2010 at 16:43 | answer | added | oneat | timeline score: 0 | |
| Nov 10, 2010 at 16:42 | answer | added | David Z | timeline score: 0 | |
| Nov 10, 2010 at 16:11 | history | edited | kennytm |
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| Nov 10, 2010 at 15:51 | history | asked | Ahmad Farid | CC BY-SA 2.5 |