Most People Don't Know How Bikes Work 

チャンネル登録 15M
再生回数 21M
50% 1

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 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. • Risking My Life To Set...
Much of the information presented here on the stability of a riderless bicycle stems from original research at
Delft bicycle.tudelft.nl/schwab/Bicy...
Cornell ruina.tam.cornell.edu/research...
This line of bicycle-balance research was initiated by Jim Papadopoulos: www.nature.com/articles/535338a
Great videos on bikes and counter-steering:
MinutePhysics: How Do Bikes Stay Up? • How Do Bikes Stay Up?
MinutePhysics: The Counterintuitive Physics of Turning a Bike: • The Counterintuitive P...
Why Bicycles Do Not Fall - Arend Schwab TED talk: • Why bicycles do not fa...
Today I Found Out: We Still Don't Know How Bicycles Work • We Still Don’t Know Ho...
TU Delft - Smart motor in handlebars prevents bicycles from falling over: • TU Delft - Smart motor...
Andy Ruina Explains How Bicycles Balance Themselves: • Andy Ruina explains ho...
More References:
TU Delft Bicycle Site: bicycle.tudelft.nl/schwab/Bicy...
Bicycle stability program: ruina.tam.cornell.edu/research...
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










コメント数 : 23K   
@Kragatar 年 前
I think the most impressive part of this is the human brain's ability to do something it doesn't even know it's doing.
@philipo8170 8 ヶ月 前
Like how we intuitively learned what a parabola is playing catch. Long before it was formally discovered
@ham1872 8 ヶ月 前
Like Blinking
@philipo8170 8 ヶ月 前
@@ham1872 that’s less impressive because it’s preprogrammed, not learned
@chickenbob562 8 ヶ月 前
well you know how to do it, because your subconscious understands it its just that your consciousness doesnt register it as the same its like that with a lot of stuff, like almost everything if you think about it, it feels like we are a slower and dumber version of our subconscious selfs
@ukkirot8264 8 ヶ月 前
I mean that is how they teach you in school. You have to do something, remember something and do it without thinking about it. You can tell that Pi is Pi becouse its Pi and its made to calculate the circle and ahit but a lot less people know why Pi exist and why it works. Its scary how people are made to just "do" things and not undrestand them at all.
I remember learning to ride a bike with no hands at age 13. Letting go of the handle bars completely made me fall once and I cut myself up pretty good. I was laying in the middle of the street for about 4 minutes soaking in all the pain. But I got it down and learned to be aware of the steering along with my leverages. Only really works when you’re going in one direction at a high speed, but you can do wide turns with no hands
@justind4763 年 前
I used to ride all around town with no hands. One day I went down a hill and rounded a bend at the bottom of the hill. My front tire went into a small but deep pot hole that I didnt even see. I smashed my face and had to go to the ER and a plastic surgeon to fix the hole in my nose.
@EvpatijK. 年 前
@@justind4763 🤔🤔🤔
Not just wide turns at high speed. You can start with no hands, get up to speed with no hands, orbit people with no hands... I use my hands on difficult terrain or when I need the brakes.
@justind4763 年 前
@@EvpatijK. what?
The fact that there is still research and some mysteries for such a common every-day object is insane
@Prophes0r 9 ヶ月 前
Not really. The more stuff you understand, the more you realize that you don't really understand those things.
@sharonmiller7213 6 ヶ月 前
I love it
@user-so2fp8tz9o 3 ヶ月 前
Yeah really only for science-fans, not people with an actual scientist mindset. We dont know most things about everything We cant even predict the motion pattern of a swinging 2 bar linkage
@urk5204 2 ヶ月 前
It’s wild to think we still don’t entirely understand a human-made device invented nearly 140 years ago. It’s not like there haven’t been advancements to it since then either, and all without entirely understanding the how of it all. Human intuition is incredible
It gets even weirder. The language which is used to describe the concept of a bike is itself not a bike, right? So in order to understand something you need to create something else? It gets even weirder, but I'll stop now before the lizard people find me.
This is taught explicitly when you go through motorcycle courses, it’s even more important to know this when operating at multiple times the speed and hundreds of pounds more weight to that you can safely operate the vehicle
@AndyDentPerth 2 ヶ月 前
Motorcycle turning is very different although initiated the same. At very slow speeds you are relying on the centre of gravity to keep the bike upright and you turn by steering in the direction you want to go. At higher speeds, yes you initiate them with counter-steering but it's because you ARE using the gyroscopic effect - much faster wheel speeds with much heavier wheels. So there's not the second turn back that is shown in in this video with bicycles, after the counter-steering. These differences are even more dramatic when braking on a curve. I had to have a tendon reattached after crashing my motorbike the first time back on it in years after many years riding bicycles, because I didn't realise my muscle memory was all wrong, and ended up braking into a median strip because I braked in a straight line.
@SILVERK5 2 ヶ月 前
@@AndyDentPerth All 2 wheels vehicles turn the same way, by leaning into the turn and using tires with rounded thread profile to allow it (as opposed to car's flat ones). The major difference between bike vs bicycle is the effect of the rider's body to initialte a turn. A lot on the bicycle, less on the motorcyle where the proportion of you weight over the total weight is not as great, plus the heavier wheels have more inertia (gyroscopic effect)...Thus steeting with the handlebar is more efficient than steering only with your body (same for the bicycle by the way, especially at high speed). But fondamentaly, they are the same. And as explained in the video, turning the handlebars to the right will make the vehicle "fall" to the left and thus turn left, and vice versa.
@jridenour31 2 ヶ月 前
​@AndyDentPerth Everything you just said is wrong. Turning a motorcycle at any speed is initiated and stopped by counter steering. You're not using the gyroscope effect, you're fighting it. The second turn back into the direction of the turn after the initial counter steer is also done on a motorcycle. You might not notice it but that doesn't change the fact that it's happening.
And that is the only way to fight the side winds.
I realised this when, as a teenager working at a fast food restaurant I was asked to take their comically oversized tricycle and go and pick up trash around the restaurant. Being used to riding a bike simply by leaning, and counter-steering, but never having thought about it, I just kept going into the wrong direction, in public, on a freaking tricycle! I provided very good amusement to my colleagues that day (And refused to ever ride the stupid thing afterwards)
I learned to ride a motorcycle with a man that taught me counter-steering where you push away from your body with your hand on the side that you want to initiate a turn. It was so counterintuitive to hear, but once I learned how the bike reacted underneath me, I realized that I was doing it instinctively. You push away and as you "fall" into the turn, you then turn in to complete it. Learning how to ride a bike (in theory) all over again by having someone describe the actual movements rather than the instincts was jarring to me. I still think about it every now and then (riding motorcycles for over 20 years) and it still trips my brain when I move the set to the right to steer left. Thanks for the video, great stuff.
@EtaSoon777 年 前
Is a 100mph high speed sweeper the same or is the counter steer a endless phenomenon? Head tube angle 📐 and bike style also comes play. Cafe bike with steep head tube angle are the extreme examples. Counter steering is best demonstrated by viewing a remote controlled motorcycle. Crazy
@AAMech 年 前
@@EtaSoon777 It depends whether you're talking about from a practical perspective or a mechanical perspective. From a mechanical perspective, motorcycles/bicycles steer in turns at any speed... "counter steering" is just a methodology for explaining the technique used to control it. From a practical perspective, in a high speed turn you have to keep pressure on the inside bar in order to maintain the turn. If you release pressure, front wheel castor (even on a bike with a steep head tube angle) causes the bike to steer deeper into the turn until the point where the wheels are brought back under the center of gravity.
@EvpatijK. 年 前
Контрруление помогает только на уклонах, посмотри внимательно на гонщиков MotoGP...
@dakota9821 年 前
@Observ45er You figure that out yourself? 🙄
@@EvpatijK. Counter-steering works on flat surfaces as well. You just have to be going fast enough. (Hopefully Google translates my response well enough)
@SeanRice-rv6ml 9 ヶ月 前
I built a reverse steering bike, and while it took about 2 years to be able to ride it well, it was very much like having to learn to ride a bike all over again (except now as an adult with all the analysis skills I have gained). I learned many things about how to ride a bike, but the most fun thing I learned was the element of steering you illustrate in this video. Many people know how to ride a bike, few know what they do to make it work. Thanks for the video.
@LegalEagle 2 年 前
Mike Boyd could ride that bike.
@nedben1602 2 年 前
@KiLLJoYYouTube 2 年 前
Colin Furze would make a bike you could never fall off of using the trick.
Mike Boyd is now legally obligated to ride that bike.
Well well- looky here. How our worlds collide! Glad to see you're branching out into the sciences, Eagle! That's very well-rounded of you. Long-time fan btw, under several different accounts now.
@kosviik9584 2 年 前
He could teach Tom Scott how to do it. Imagine the absolute beast riding this one better than a normal one.
@fatpedro22 年 前
Honestly this video just brought me joy. As an engineering student never before have I ever thought of this and it just blew my mind as I took for granted and never questioned the fact that the gyroscopic effect was responsible for balance. Man I'm just happy that I just watched this.
@spork33 年 前
You're going to make an excellent engineer.
@aka_miso 年 前
I remember as a kid my friends and I would try to balance on our bikes stationary and see who lasted the longest and we would end up frantically turning the wheel back and forth to stay up
more like right and left if it was stationary ?
@symoneprice798 7 ヶ月 前
Hahahahahahhahah. That’s funny
@user-so2fp8tz9o 3 ヶ月 前
How do you turn the wheels on a bike thats stationary and also touching the ground? That would make the bike move, no?
@uzoge 3 ヶ月 前
@@user-so2fp8tz9o guess they meant the handlebar
@elisha2358 27 日 前
​@@user-so2fp8tz9o they were pedaling backwards
I am doing research in dynamic balance in human walking and this effect plays a major role in people walking without falling. I saw this video a couple of months ago but today I realized that his video has direct application to how bipedal creatures keep themselves stable. Thanks.
I am very glad I watched this video. The next time I rode my bike after seeing this video I was just super more aware of how the human body moves balance wise. It’s one of those things we unconsciously take for granted and for some reason I am glad this little thing was pointed out because I like being conscious about things taken for granted.
@abehartshorne6028 6 ヶ月 前
I find this very interesting. I ride my bike to work every day. I find this to be true at only low speeds. At higher speeds you lean into the bend before to turn the handle bars, so there is no leaning the opposite direction first. This can also be done at low speeds, but naturally you do go the opposite way first if not thinking about it. Pretty cool.
Same here. I have to be going pretty slow to use the counter steer to turn. To stay balanced at low speed I of course let my instinctive counter steer take over.
@hughjardon3538 4 ヶ月 前
It's the opposite way round. Get up some speed, take your hands off the bars and see how fast you can turn, then try the same at low speed.
@abehartshorne6028 3 ヶ月 前
@@Observ45er you can shift your centre of gravity easily, move your head, shoulders, upper body mas, even lower body mas if standing, and the knee on the side you want to move outwards, and your entire weight has shifted. Then the bike will follow and lean that direction also. Centre of gravity is easily manipulated on a bike.
@abehartshorne6028 3 ヶ月 前
@@Observ45er ok, get on a bike and try it. It works. Without getting all scientific, you can just get on a bike and try. It's the same as standing up. Do it, stand up now. Lean to the side, you will start to fall to the side, not the opposite side, but the side you lean. On a swing you have your pivot above you, you are the force, and the reaction happens below you, you move the opposite way. Put it this way, roll down hill on a bike, lean. Just lean to the right let's say. If you want to, you can lean right, and not react, do not turn the handle bars, and just fall all the way to the ground. Or, you can lean to the right, and just like if you stand up right now and lean to the right, you will start to fall to the right. On the bike, as you start to fall, you turn you handle bars to the right and your force now goes into the bend. I mean try it. I test it on the way to work. I encourage you to get on a bike, roll down hill and just lean to the side, as if you are trying to topple over, which you can do, you can just lean and fall. But then follow the lean with the rotation of the handle bars and, boom, you are turning. Use science to understand the findings. In this case you don't need science to predict the outcome, it's just a bike, you can go and do it. I believe you may be imagining this as a stationary bike or slow moving. Where if trying to balance without moving, when you lean right, you will push the bike out left, to keep the gravity centre. But at a speed, when trying to turn, as in move to the right, you do not want gravity centre. You fall right and then follow with a turn to the right, and the force gets pushed into the ground. Ah, I mean, do the experiment. It proves itself. Alright, peace.
@@abehartshorne6028 Bingo. I was an elite cyclist in my youth. Road bikes work at speed for a reason. Your feet on the pedals just forms a triangle to the ground. Like walking, we are always just about to fall. I think this experiment needs to be revisited with pros and armatures. Plus different stiles of bikes and do it on the old Alameda Naval Air strip.
@ShortHax 2 年 前
It’s easy to build a rocket. It’s not like it’s bicycle-science
@deninpaul7509 2 年 前
How the turntables ...
@wizard_dynamo 2 年 前
You don't build a bicycle, bicycle builds you.
I see what you did there 👌
@obama_phone 2 年 前
@obama_phone 2 年 前
what about bananalogic
@zenkiethan 年 前
You guys should do a video about drifting cars. a lot of the same principles apply especially caster/self steer. that’s the main reason drifting is possible. i’d love to see y’all go in depth with the physics of drifting as that would help a lot of people refine their technique and understanding of the sport.
@trifortay 年 前
the thing I love about riding a bike is that once you know how you never forget how, and riding one is just completely intuitive
@jamzee_ 年 前
As a kid i somehow pieced together how to balance a bike without my hands on the bars and feet off the pedals. I felt like a king watching friends fail to sit on a stationary bike.
This is a very helpful video. I’m an avid cyclist and the steering and stability of bikes is often shrouded in mystery by those who design esp. racing bicycle frames.
@SpicyTrifongo 13 日 前
So I just watched a video of Peter Sagan cornering. He starts the turn by leaning, presumably with the saddle as the contact point. He turns left by leaning left and following with the bars. He never turns the bars to the right. I feel like this video is a flawed model that doesn't really cover the full gamut of what entails turning on a bicycle.
@olheghtt 9 ヶ月 前
I have watched a lot of videos on counter steering, I'm not going to say that this is the best one, ( i have not seen all of them). But this is by far the best one i have seen....well done.
@MikeShake 2 年 前
Would love to try this one 😍
@chrisarva8384 2 年 前
I am sure 😂😂😂
@alr2305 2 年 前
Hi 👋👋👋
only 2 replies....oh i am early
@spork33 2 年 前
I love your videos and would love to put you on this bike. If you make it to the S.F. Bay area let's do it.
@bread2951 2 年 前
_Riding the unrideable bike. All you need to do is pRaCtiSe_
@volf4o 年 前
The caster angle in the car is also responsible for that the front wheels are always trying to balance themselves going straight ahead, hence the effect when you're in a corner and release the steering wheel the steering wheel is sort of "automatically" straighten itself.
@lordiblees ヶ月 前
As a teenager, I was extremely inquisitive about the physics behind everyday motion and stuff and no amount of internet research gave me a satisfactory answer about how bikes really work. Thanks so much for finally answering something I quit searching answers for!
É realmente incrível como os estudos fazem a diferença, vcs estão estudando algo q a maioria das pessoas pensavam totalmente ao contrário q era devido ao efeito giroscópio mas tem muito mais q isso
When I turn my bicycle I lean, a little, first and the steering naturally follows on. I think the portion at about 08:00 best explains it in terms of the self steering mechanism.
@RenatoLaino 年 前
The same when you turn without holding the handles
@nigeladams8321 2 ヶ月 前
Yeah I've never used counter steering even after watching this video. It feels way more intuitive to lean and then steer
@remo-con 19 日 前
yep this whole video is totally wrong, coz when u block the specific turn, what actually happens is u ruin ur balancing, so u just fall off BEFORE u even try to do anything. in reality, u can totally turn without countersteering, yes, by leaning first a bit and following with the handlebars as soon as bike starts losing its balance, and this is preferable way to turn in specific situations, like, in winter for example, this way u dont have to lean too much. however, in any normal situation its preferable to always go for countersteering, coz its faster and more reliable, and with the speed the ability to not-countersteer loses efficiency extremely fast, like at 50kmph ur turn radius is gonna be somewhat like 20m with countersteering and 50m without, so basically u cant even turn in a city at this speed without countersteering.
@SpicyTrifongo 13 日 前
I only use counter steering when I'm making a u turn or doing a dramatic turn before stopping. any other occasion I start the turn by leaning. This ain't a motorcycle you can overpower it with body weight. @@nigeladams8321
@MillieBarnes 9 ヶ月 前
This was fascinating. I have always loved riding a bike and learned when I was very young so I don't remember hardly ever not riding one. But I've just lost the sight in one eye and had an ankle surgery a few years ago and I'm just now getting back on a bike, and I have to say it getting back on a bike has made me more steady that I've been in years and giving me much more confidence and healing.
@altaccount2400 6 ヶ月 前
It's possible to steer without countersteer just sayin
You need to get Tom Scott to try this; he's the expert!
As long as Mike is there, he should be okay
My thoughts exactly!
That would be a great collaboration
@roykale9141 2 年 前
I just watched that video!
@cheeen 2 年 前
That's the video showing after this for me
@haku5461 年 前
As someone who drives free hand all the time I figured this out some time ago. When making a turn while your hands are not on the handlebar you have to lean into the opposite direction first before making a turn. Great video.
@SpicyTrifongo 8 日 前
Except for the part where you don't need to do that
You make the same opposite prep motions when turning/pivoting in dance (e.g. rotate your torso left, and point with 1 foot (the pivoting foot) pointing right, to prep your body turn right) & in martial arts (for kicks/punches)! Nice to see bikes work the same!
@kuyab9122 年 前
We have this decor in the house with a "Life is like a bicycle. In order to keep your balance, you have to keep moving."
@stevek8829 年 前
Cute but reality is different. Bicycles can be balanced at zero speed.
@kuyab9122 年 前
@@stevek8829 You just had to be pedantic dude lol
@Krecconati 年 前
@@stevek8829 you forgot to mention that you have to be at exact angle to do that (probably irrelevant, but still)
@stevek8829 年 前
@@Krecconati you didn't mention what exact angle might that be? They do it at many angles and positions. I didn't forget something that isn't true.
@dakota9821 年 前
@@kuyab9122 It's what happens when someone has no friends or life.
@crxk20r59 年 前
Nice video…..reminds me of maintaining balance during a handstand. The tiniest movements of your fingertips & palms to keep a straight handstand. 👍
@mattgalper5397 4 ヶ月 前
I just did the MSF basic rider course to learn how to ride a motorcycle and counter steering is a big concept they go over when you're first learning. I feel like they should show this video to all the new riders. I get why they go over the concept of counter steering and make you aware of it in these motorcycle safety courses, but in my experience they don't ever really relate it back to pedal bike riding. And because they introduce counter steering to you as this new, foreign concept that you're just now learning to do for the first time, it makes you overthink it until you realize you were already doing it. At least it did for me. Like I said, I think it's good to make new riders aware of the concept since they're on heavier, more powerful bikes but I think relating it back to turning on a pedal bike and making people aware that counter steering is something they've been doing since they first learned to ride a bike would make the concept feel a lot less intimidating.
@dogsrocks1028 2 年 前
To me its incredible how humans just learn to do these things subconsciously. Noone tells you that when youre a kid, you just try over and over again until suddenly you do it right without even knowing what youre doing differently. Imagine how many things you do right without even understanding why oder what exactly it is youre doing. Absolutely incredible
@VengeanceCore 2 年 前
I did actually tell my kid this, I didnt know this was something people didn't know. Its also very obvious that you have to do this on a motorbike.
@@VengeanceCore My dad explained this to me when I was learning to ride a bike and it actually screwed me up, cause I was always actively trying to countersteer and I always went too far. But maybe that's just me.
@I'm just here for the asmr 💕 riding a bike doesn't give you confidence You find that within yourself, I think
@bobsmith6544 2 年 前
Dumbest statement ever bro LOL.
@dogsrocks1028 2 年 前
@@bobsmith6544 why you gotta do me like that though D:
@AmayaElls 年 前
I knew about counter steering, my dad rides a motorbike and knew about it so taught me when I started riding more. Understanding counter steering does help.
@jakeave 10 ヶ月 前
This kind of saved me on my motorcycle because I already ride a bike well and people explaining that on motorcycles you need to counter steer have been confusing me. I think now I understand I've been doing it intuitively, but I can try paying more attention and doing it more conscientiously.
@bingbong4745 2 ヶ月 前
This was a very entertaining and enlightening video. I ride and commute on fixed gear. There is not much counter-steering through traffic, but a lot of leaning and micro-adjustments. Indeed there are many facets to the cycling world that are apparently still to be discovered and explored. Thanks for the brain puzzle!
Driving fast also grips more on corners . Counter turning beforehand seems to put more down force on the side that benefits from more grip . A Scandinavian flick is a move rally drivers use to turn before a corner by counter steering as well . Interesting upload thx
@cylver4630 年 前
This would have saved years(learning), if I knew this in my childhood
@jjhbball 2 年 前
To me, science often shows how incredible our intuition is. There is so much that we do "naturally" without understanding the mechanics. Sometimes we get it wrong, but I like the example of shooting a basketball. The physics involved are incredible, but people can train to put a ball in a hoop at a weird angle from incredible distance, under duress, and with remarkable consistency without a deep understanding of the mechanics.
Lovely comment!
@calebr908 2 年 前
And people can understand the mechanics and not be able to do it.
@reefosjay5407 2 年 前
I agree
Or even simpler, being able to catch something thrown at you. Many intense mathematical calculations are subconsciously made in split seconds to know the trajectory of the object and where and when to catch it.
@jacobveryberry 2 年 前
As a shooter and basketball player, please do not discredit the thousand of hours “in the lab” where we learn the mechanics and physics of putting the ball through the basket (no matter the conditions) through sheer repetition and proper coaching. It’s not like we’re doing math of course but we’re still learning and experiencing it through all of our senses. The depth of understanding is subjective I agree but “dumb jocks” often know their particular stuff “down to a science”.
@Immortal.. 年 前
They actually teach this in motorcycle school here. Very important as countersteering is faster in initiating a turn than just leaning over. In case of a surprise obstacle (car taking your right of way, rock in the middle of the road etc.) this lets you react much faster to that
Love you man, I so so so much wanted this video!!!!!! God the detail that you have to intuitively turn in he opposite direction, right there you had me bro!!!!❤️❤️❤️❤️
@ajanderson4754 4 ヶ月 前
Thanks. I'm trying to understand angular momentum and gyroscopic precession. This answered my google search '...but how does gyroscopic precession affect a bicycle?' - Amazing.
@Rukain 8 ヶ月 前
Wow.. loved to learn about this. Never knew bicycles had these kinds of things going on. Thanks a lot for the video.
It seems like a critical factor in the self steering is that when the bike leans left causing the front wheel to turn left - allowing the bike to keep rolling but now to the left slightly - the linear momentum of the bike is then pointed to the right slightly with respect to the new orientation/trajectory of the bike, encouraging the bike to steer right, and then turn slightly right. As such I would expect that on flat ground with a symmetrical push-off an un-manned bike would oscillate left to right and back again in a somewhat sinusoidal manner. This feedback mechanism allows the bike to not just ride upright, but to do so in a roughly straight oscillating manner, as opposed to going in loops and loops. I feel like this feedback loop was somewhat missing from the video’s explanation (the three mechanisms at the end), but maybe this is encapsulated in those mechanisms and I am just not seeing the connection? Super interesting video!
@Ammar34567 2 年 前
"Since most of us can ride a bicycle" Tom Scott: **nervous sweating**
@sajid_ahamed 2 年 前
can he not ? is there any video of his in which he says this?
@zyaicob 2 年 前
Watch yesterday's Tom Scott Plus video
@ragnkja 2 年 前
@@sajid_ahamed Yesterday’s video on his second channel, with Mike Boyd.
@FogelTheVogel 2 年 前
*Laughs in dutch*
@sajid_ahamed 2 年 前
@@ragnkja just watched it, unreasonably funny
@explorewithgeoff 6 ヶ月 前
I'm a new cyclist and have found real problems with the camber (sideways slope) where I've ridden. I fell of due to that and now am injured so can't ride for a while. From what others have told me, plus this video that has made it even clearer, I wasn't leaning at all but was moving the wheel to steer. I used to ride as a teenager with no problems at all, yet somehow in my 50's it isn't coming to me naturally. It's actually quite odd that I seem to have "forgotten" how to steer a bike! I should be doing it without thinking, but it's not happening. I can't wait to get back on and try again.
@decwow 2 ヶ月 前
5:35 That's part of it. My dad and I tested this years ago with some wood rings we substituted as "wheels". Use hard, flat wheels that do not flex under your weight and you can balance upright just fine, after a few practice attempts, when not in motion. You can even do it with the wheels held inline. The compressed air filled rubber wheels shift your overall weight and momentum constantly. This is for balance excellent while in motion, but awful for standing stationary.
As a dutch person this is really funny to see as there are many people that do not even use the steering wheel. You can use only balance for turns.
Not really. You balance by throwing off your balance, which involves steering.
@123698lol 8 ヶ月 前
The bicycle still steers when you don't have your hands on the bar. Why was being dutch significant?
@@123698lol Because everyone in the Netherlands bikes almost on a daily basis and many do not use the steering wheel. It is like steering with a unicycle it is all in the balance and the speed.
@XtreeM_FaiL 7 ヶ月 前
@@khamultheeasterling4459 Bicycles usually don't have steering wheels, at least not outside Netherlands.
Makig myself aware of the countersteering has improved my curve lines dramatically when driving my motorcycle.
@jdb9129 2 ヶ月 前
Great video! I guess I never realized it's probably not common knowledge. Counter-steering was something you had to learn right away on a motorcycle, but then again, most people don't ride a motorcycle lol.
@yakbreeder 2 年 前
We were taught counter steering in our motorcycle rider safety course years ago. Several in the class just could NOT comprehend it. One guy almost got tossed from the class for being argumentative about it. The instructor told him that anyone who has ridden a bicycle, counter steers without knowing they are. He finally accepted that he was wrong and passed the course.
@TheKep 2 年 前
I don’t know why they even teach “counter steering” like there is an alternative. If you don’t “counter steer” then you don’t ride a motorcycle lol.
@@TheKep I had found the way it was explained in class was way more complex than it actually was. But that is down to the instructor
@SteveGunn2 2 年 前
@@whiskytangofoxtrot_ I was going to comment the same thing. My instructor taught that if you want to go right you need to "press" on the right handlebar. It felt unnecessarily confusing, and was probably just better left not being said. People intuitively know how to steer as long as they know how to ride a bicycle.
@mactraynor6243 2 年 前
Sure -at low speeds motorcycles act the same way - At speed you "turn" the opposite way you want to go the entire time. Try it - going down the highway press forward on the left handle bar. The bike will lean left and turn left.
@MistedMind 2 年 前
@@mactraynor6243 To me it's the opposite order. To go left I lean left. But to prevent the bike from "falling over" I have to press left to counter steer.
@strangerdaysss 5 ヶ月 前
i remember when learning how to ride a bike by myself that i needed an initial momentum to enable me to be stable on the bike so i would always practice on a small slope hill. i did it for a few days and got injured a lot and finally learned how to balance and ride on a bike. it definitely took a lot of dedication and courage (sad to say i honestly dont know where this stamina went). i was only an elementary kid at that point and learned how to bike solo.
Is the effect recursive to some extent? Like do you micro turn right to turn left to then turn macro right?
@paramrekhi6085 5 ヶ月 前
I love the fact that you start with the assumption that most people know or atleast have an intuitive understanding of the gyroscopic effect. I also love how the subtitles say "futuristic sound effect" when you're logo tune comes on 😂. P.S: I'm now wondering how punctuation rule work with emoji...🤔 (or maybe 🤔...)
@SuperSpruce 6 ヶ月 前
As I was taking the Basic Riders Course to learn how to ride a motorcycle, it at first seemed like a countersteer to the other direction to initiate a swerve just felt wrong. But when I executed it properly, the swerve was smooth and effective.
@nawazsharif1087 4 ヶ月 前
An Excellent video explaining bicycle riding technique
"Understanding how bicycles work is still an active area of research". This really is pretty extraordinary.
Veritasium-Fans, I have the Hobby to recommen Science-JPvidrs to Fans of Science-JPvid-Channels.
What the hell are we doing trying to get to mars when we haven’t figured out bicycles yet 😂
Gives me the same energy as inventing the Rubik's Cube and then not being able to resolve it
@@Chimera_Photography XD
It's always funny to me how humans can create things before actually understanding how they actually work
@aitnez ヶ月 前
I just got home from a bike ride! Amazing video and information!
@wickitklown90 ヶ月 前
5:48 I learned this years ago, via Ripley's, I think. A guy went to the Salt Flats to switch bikes at a high speed. He rode one and had someone ride beside him. The bike he switched off and on to, stayed up riderless for about 100 yards of the stunt.
@MrMan-sy4ev 年 前
I had no idea bicycles had this much thought put into their design. This was a crazy video!
honestly, the first designers didn’t know either. They didn’t use these concepts to make their bikes, they just tried some stuff and kept what worked.
@MrBwian 4 ヶ月 前
Counter-steering, or positive input, when riding my motorbike, I was taught to push the bars forward for the direction required, push left forward, turn left and vice-versa It's very sensitive and aids cornering with less effort
@MSimmonsAZ 2 ヶ月 前
30 years ago I did a bike tour/race. I went to the info session. They said when you see a stone or something small in the road ahead of your front tire just sort of punch the handle bar on one side you and you will avoid the object on the other side. so if I punch right I will pass the object on the left. Depending on speed it is perfect for moving the bike over 2 inches either way.
I'm a radiotherapy engineer. At my job interview for my current position, I was asked to explain in layman's terms how a bicycle works. I explained how the pedals make motion through the gears, and then rapidly dissembled with "as to how a bike stays upright in motion? I have no idea, I'm not a bicycle physicist" AND I STILL GOT THE JOB
@bobbyboobs8816 2 年 前
As an interviewer you would have got extra points for that. It is essential that people in technical positions understand the extend of their knowledge and are honourable enough to admit such even in high pressure situations where revealing the limit of your knowledge could be detrimental to you personally. The worst answer in the world is to try and bluff your way through.
but how do hula hoops stay in equilibrium during motion but falls when its stationary?
@@apekshamaheshwari9666 speed invert gravity force. sam,e with the bike wheel experiment horizontal
@carljensen5284 2 年 前
They were just hoping you knew the answer so they could take credit at the nobel prize ceremony
@dreamwolf7302 2 年 前
Questions like that are actually geared towards to checking the ability of the applicant to acknowledge when they dont understand something. Because in any medical field, the biggest danger to patients, are professionals who cant accept that they dont know something.
@J_a_n_k_o 9 ヶ月 前
Thanks for this super interesting video, really cool!
@ivarrtullitt1235 6 ヶ月 前
Be surprised how much knowledge of counter-steering is known amongst the motorbike community. One of the first things we learn
I used to ride motorcycles. To turn left you push forward very slightly on the left handlebar, which effectively turns to the right. This causes the bike to lean to the left & left you go. This is because you're extending the distance between the rear and front tyres & you don't have to fight to lean the bike, it does it itself. It's a delicate process that is best practiced before going straight out & doing it.
@samueladitya1729 5 ヶ月 前
very slightly? I usually yanked it making sharp cornering and sometimes drag the kickstand.
i thought this was common knowledge ive been on two wheels since 3yrs old so i guess that may be why i knew already but great video and great job explaining :)
i actually learned how a bike handles when i was around 4 i used to have training wheels but they were bent to the point where they don't ever contact the ground anymore, one time when i was riding it i noticed it was balancing so i asked to remove the training wheels and i managed to balance it i just knew that if it's rolling it will balance and turning just came naturally because when i turned the handle bar i noticed it wasnts to lean towards the direction it turns so after a few tries i got the hang of pushing it towards the direction i want it to go it was such a fascinating experience
@z-beeblebrox 2 年 前
You know a design is perfect when a hundred or so years after it's invented, researchers are still studying how it works so well
@borncomatose 2 年 前
Exactly it's why the combustion engine should never go away
@z-beeblebrox 2 年 前
@@borncomatose Unless you power your bike with lit farts, I think we're talking about two different things
@lilnibba2905 2 年 前
@@z-beeblebrox lit farts sounds much cooler to me
@Lazy_ness 2 年 前
The actual combustion engine is a cool thing, it’s just it’s fuel source. But still a really interesting piece of engineering, although not as simple as the bike tho.
@borncomatose 2 年 前
@@z-beeblebrox no because if it exists for years, stills works and still gets improvements then it's literally the same mental as you 🤣 lmao ur just slow
@TheEgg185 年 前
I noticed this myself once. I kept trying to turn without turning slightly in the opposite direction first. It was frustrating and I just couldn't do it. Also, I tried turning without leaning slightly. It can't be done. You must steer in the opposite direction AND lean in the direction you want to go or the bike will not turn.
@SpicyTrifongo 13 日 前
you can also just lean in the direction you want to go without touching the handlebars whatsoever and the bike will turn. I've done it thousands of times.
@sumoneskid 8 ヶ月 前
To ride a sled or motorcycle aggressively, you'll have to be abundantly aware of reverse steering. I've never though about it on a bike. And way to shatter what I "knew" about the benefits of spinning wheels and speed. Great video.
How u explain though that when I ride a bike with no hands... I always lean into the turn first..?
@AlexChernomaz 11 ヶ月 前
nice collection of the facts about the bike balance and its geometry.. but yeah steering trick is what is called a "counter-steering" and learned by moto bike drivers on the tracks to push handlebar outside the corner instead of pulling it into the corners :)
@user-ro2hc9tc3b 9 ヶ月 前
And I thought that i knew it. What wrong i was. Thanks for this amazing video. It also shows me that there are many things over and about this world that we think we know but actually we are wrong without knowing in many of them
@LyricWulf 2 年 前
"Turn right to go left... Hm..." -Lightning McQueen, moments before disaster
@ottlight 2 年 前
ayo my favourite embery piano dog
@hasainn.7784 2 年 前
Ah yes, Doc Hudson instinct had prevail the truth.
@woozbeast 2 年 前
Reminds me of the scandinavian or Finnish flick in rally!
The mechanics said Lightning McQueen would never race again.
With regards to 4 wheel vehicles....while for road driving yes, it's point the steering wheel where you want to go.....in race cars weight transfer is a big deal and you might move the car to the right a little before swinging left to load the tyres up better. Also, in rallying a far more extreme version called the Scandinavian Flick is used to set the car up for very tight corners.
@mathixx 5 ヶ月 前
I only learned how bike really forks after starting to ride on a motorcycle. You have to learn to use counter-steering consciously in order to lean your bike into sharp turns. It's quite amazing when you use this knowledge later on regular bicycle ;)
@ian9toes 9 ヶ月 前
Cotton chipping once on a motorcycle set up with an auto clutch and outrigger so that the bike could easily be mounted and dismounted to attack weeds, was a fascinating experience. With all three wheels on the ground there was no counter steer to initiate a turn. However on the open road you could get the outrigger off the ground and then you had a normal steering motor bike. So the one vehicle had two distinct turning characteristics which didn’t take much to master, at least not for me being a seasoned dirtbike rider I assume.
@KH-gd1my 年 前
If you've ever taken a msf (motorcycle safety training) course they teach you to push on the left side of the handlebars to go left and vise versa using the same effect. Very interesting video love the bike content.
Now you and Destin can go on bike rides together
@Corkoth55 2 年 前
I just re-watched his old video yesterday and now this gets uploaded a few minutes ago .. freaky!
@Robert-cu9bm 2 年 前
And make a super impossible bike to ride.
@wizard_dynamo 2 年 前
@@Robert-cu9bm That's the plan.
@gabor6259 2 年 前
With Tom Scott.
@pratyakshyt 2 年 前
Yeah I remember this bicycle from destin’s video
I myself ride A LOT of bike like, at least 1000km in a year. I just love it and I also love riding without hands from time to time, there is nothing more satisying than riding on a nice track near a river handsfree in little germany for me :) I find it fascinating that I am able to not use my hands for several minutes in a row and still have full control
@SpicyTrifongo 8 日 前
"counter steering" is a terrible name for this phenomenon
@Jowen0wen 6 ヶ月 前
I think i assumed you can balance a moving bike because the bike is moving forward so any force to the left and right would need to be greater than it would when stationary in order for the bike to fall over. But this makes sooo much more sense now I've heard it 😂 even when stationary anything I'd automatically do to try and balance is all in the steering of the handlebars
@thekamotodragon 11 ヶ月 前
Most people do this subconsciously when turning that they probably don't even realize counter-steering is a thing, but I like how this experiment shoves how important counter steering is in your face by just removing it completely as an option from the bike and then asking someone to ride it lol. It's a simple and easy way to prove how important counterbalance is.
9:54 So instead of “Fly by Wire” for the prototype bike, you have “Steer by Wire” to augment the operator’s controls to keep it stable at lower speeds. Cool!
@__dm__ 11 ヶ月 前
I recently learned how to drive a motorcycle; the countersteer force on a motorcycle, especially when going like 40-50mph is so high that you have to put like a few tens of pounds constantly pushing the handle to turn. If you stop doing it, the motorcycle has a self righting force due to the trail of the front fork. It's just so much stronger on a motorcycle since it's heavier and faster.
@YourPalKindred 2 年 前
I never realised how intelligently built bikes were. It looks so simple but it's such a genius creation
The people who designed them probably didn't realise either. It was just an accident that they discovered the principles shown in the video.
They haven't changed very radically in the 150 some odd years since we pretty much figured them out. Only took us about 60-70 years from the very first two wheeler to basically reach the peak of bicycle tech. Kinda strange that no one had gotten around to inventing a bicycle until just 200 years ago. The wheel had been around for a good long while already. Surely the other components of a bike could've been readily cobbled together for a few hundred years before they finally were. I dunno.
@beebait1464 2 年 前
@@conalbennett8259 it was kinda just an iterative thing. Early bikes looks funky and they just kept what worked and replaced what didnt work.
@ultramaga4075 2 年 前
Yah a steering wheel...deep
@YourPalKindred 2 年 前
@@ultramaga4075 see that's how I used to feel, but now that I know the mechanics behind it it feels a lot more impressive
@riksstaden4927 ヶ月 前
Where I live there is a bike road down hill with a sharp turn, and if you don't break you need to counter steer across the entire bike road. And you need to hold out your arm really early on so you can have your hands on the stering bar during the turn. Didn't realize ever turn had counter stering though.
Thank you so much for this important video. It explains why I have so much problems with bikes.
@SpicyTrifongo 8 日 前
It doesn't
Amazing! I wonder if this will help teaching kids to ride a bike
Reminds me of riding your bike when walking back from school. The game was to ride at the same speed while your friend was walking without putting your feet on the ground.
Basic motorcycle course instructions make this pretty clear: to turn left, you push on the left side of the handlebar. Opposite of how you would think a motorcycle turns.
@AndyPanda9 2 年 前
Motorcycle enthusiasts hashed this all out 25 years ago in an internet group I belonged to (and I'm sure it was hashed out many times before that - I bet the Wright Brothers knew exactly how it works). The subject came up in the Motorcycle group because getting your motorcycle license had a question about how to turn - and to pass the test their answer was turn left by leaning left. We did similar experiments back then trying to lean a motorcycle that was modified so you couldn't counter-steer and it couldn't be done. Excellent job explaining it in this video - now a whole new generation can be amazed to learn about counter steering.
@tommyduris3044 2 年 前
Spot on!! 👌🤟 i was waiting for someone to say that
@flashpeter625 2 年 前
I heard that for a motorcycle, the profile of the tire is also important for cornering. Riders are taught that they need to put more throttle to go around a corner at the same speed than if they went straight, and that is because the tire has a smaller diameter on the sides than in the middle, so when cornering, you need to wheel rpm to maintain the same speed. But also, when the tire is tilted, the tire has larger diameter on the outside than the inside of the contact patch, and because the wheel spins as one piece, the larger diameter has to drive a larger distance, so the tire traces a curved path. It basically acts as a differential. I have difficulties joining this with the subject of the video. Am I talking out of my ass? Are they just complementary effects? Can you steer a motorcycle/bicycle on razor thin tires that have no profile?
That was a hard question to answer on the test. I got it wrong. The question on my test was a bit different, and the only available answers were weird. The question was: which way do you press the handle bars to turn right. Just putting the whole deal into words was weird enough. Not about leaning like you said (and I would have thought.) I never thought about how I press the right handle bar forward, and therefore start falling (and turning) right. The whole thing was a little counterintuitive.
@@flashpeter625 they are just different phases of the turn. You use counter steering to lean the motorcycle from a vertical position, and once it's leaned the tire profile kicks in and that keeps the motorcycle along the curve.
@Charliened1 2 年 前
There is 2 books on the subject I would highly recommend. Bicycling science, and motorcycle chassis design. There both very interesting and definitely worth a read.
@bradanderson440 10 ヶ月 前
When I'm riding a bike at a decent speed, I find it quite easy to let go of the handle bars and ride "no hands". While riding without holding the handle bars, I can turn corners by leaning in the direction I want to turn. I'm curious if it would be possible to turn like this on your bike.
@XtreeM_FaiL 10 ヶ月 前
Not touching the handlebars won't change physics.
This principle of steering toward where you fall can be felt more closely if you learn to balance on a single ice skate. With momentum, it’s just a matter of steering your foot to stay under your center of mass. Without momentum, you can even push hard toward where you are falling, adjust to fall the other way, and keep pushing in an aggressive wavy path to gain speed
I understood how we keep the balance on bikes when I saw the tracks that the bikes leave. The front wheel was always in a zigzag pattern and back wheel was straight. That's where it clicked. Never thought about how turning works, but now I know :D
yeah i learned that the thrust you put into the wheels kind of makes you stick to the ground better through traction when u go in to lean towards the side you want to turn. I suppose this is the same concept as riding it without holding the handlebars. i really have no idea how it works. for context i used to ride my fixed gear bike as exercise for about 30 miles a day because i was so fascinated by its physics. forward momentum is ur friend if u want to stay on the bike.
@VenkyBeast 4 ヶ月 前
Man, It's really simple tho! You can easily understand this theoretically if you have paid attention in Circular Motion with Friction involved in High School Classes! At the starting of the video, I was constantly saying myself, either increase the velocity or make curve radius higher. Or else you will reach limiting friction after which Fall is inevitable due to normal force component overcomes the opposing friction! These are just underlying physics...tho I must say, I said these things vastly simplified, there are many other factors involved too.
@daanodinot 2 年 前
Always fascinated by the fact that there was a period of 50 years in human history were you could go from city to city by train, but there was no bicycle yet.
@theevermind 2 年 前
Also, we put a man on the moon before we put wheels on our luggage.
Time travel exist hahah. YOU bring it to the UNKNOWN
Actually 14 years earlier
It's like we learn words first and then alphabets
@boycottjews 2 年 前
I believe this was European history as much of the rest of the world is still lacking in both technologies.
@Pinkie007 8 ヶ月 前
This is something your learn when riding a motorcycle as it’s good to know for emergency situations where you can’t break in time, so making a turn is your only option. Left to go right, right to go left.
@average7374 24 日 前
This makes the no hands trick all the more impressive
My mind was blown away when I saw that we including me do the counter balance turn before the actual turn
Does it still work the same way if you cycle without hands in your handlebar? I could cyle without my hands and even turn by leaning to the side you want to go
@spork33 年 前
Yup. Still works the same way.
3 Perplexing Physics Problems
Extreme Breath-Holding
再生回数 2.3M
The Biggest Myth In Education