A Brief History of Bicycle Engineering

Рет қаралды 82,532

Жыл бұрын

This video explores some of the challenges in designing early bicycles and how concepts such as wheel circumferences, gear ratios, and torque were used to solve problems.
I feel that the engineering of bicycles is a great way to connect some basic mathematical ideas into mechanical problem solving. Playing with properties of circles and ratios as a way to make a bike move faster builds a context to bring these geometric ideas into something physical and creative.
The story also shows how creativity and engineering don't follow a linear path. Seeing novel solutions, failed experiments, and missed opportunities give us a great framework to inspire us and guide us through new problems.

Пікірлер: 104

@jhtprojects4431 8 ай бұрын

Excellent explanation. Thank you. Someone wrote "If your bike has a derailleur, then you can thank randonneurs." Those early cyclotourists and brevet riders lobbied for Years to convince the regulators to allow derailleurs in racing. The Technical Trials of the 1930s gradually developed lighter, better performing, more reliable components. One thing in the video: the sound of a coasting hub is at the point where the rider is pedaling.

@BHALT0S 7 ай бұрын

i once read, the bicycle is amazing, in that the engine, the passenger and the driver as one person all contribute to its motion.

@Coastal_Cruzer 6 ай бұрын

Yep

@xopurp 5 ай бұрын

it’s insane this doesn’t have at least a million views, extremelyyyy well done !!!

@dontfearthereaper2887 7 ай бұрын

Greatest transportation machine ever invented

@madeinfoxtrap5539 2 ай бұрын

Great video ! Recumbent bicycles Were considered Cheating and were Outlawed by the Tour de France After a recumbent Rider beat all others On upright bicycles

@jun-yuncharliegreen8743 Жыл бұрын

Really good video! Needs more views for sure

@meansums5405 3 күн бұрын

I still think this is the greatest invention of all time.

@Sam-mv6rp 8 ай бұрын

Internal hub gears pre date the derailer as a viable multi gear system by a good 20 years if i think correctly

@drill_fiend1097 5 ай бұрын

It's making a comeback with belt drives.

@polyrhythmia 8 ай бұрын

Bikers of the world: Unite! You have nothing to lose but your chains! I see the bicycle as being a stride amplifier.

@tarazzzs 9 ай бұрын

Cool educational video with cool animations, loving it.

@reasonformath 7 ай бұрын

Thank you!

@hemanthrvn4661 8 ай бұрын

Beautiful illustrations..really great work

@potsato 8 ай бұрын

Underrated video! Should’ve gotten a million more views

@dontfearthereaper2887 7 ай бұрын

is underrated, just like bicycles are, cause the world is addicted to oil

@reasonformath 7 ай бұрын

thanks!

@fatbikearcticnomad2122 8 ай бұрын

Wow, awesome video of bicycle history!

@stopthephilosophicalzombie9017 2 ай бұрын

Beautiful animation.

@reasonformath Ай бұрын

Thank you!

@BaiZhijie 9 ай бұрын

This video is a great breakdown of the engineering concepts behind bikes! Great work!

@reasonformath 7 ай бұрын

Thanks so much!

@bikee1394 7 ай бұрын

Dude forgot include internal hub gears.. famous 30 years prior derailleurs

@nocaster5120 25 күн бұрын

Cool where's your video explaining bicycles

@vojtechpilar5809 7 ай бұрын

This video is fantastic and easily deserves millions of views.

@getting_better 7 ай бұрын

Cool animations! Great explanations! Amazing video!

@scottstevens7253 8 ай бұрын

Great stuff, thanks

@LukasSiemoneit Ай бұрын

Thank you for this excellent video!

@reasonformath Ай бұрын

You're very welcome!

@MysticFluff1 9 ай бұрын

Amazing video, I will certainly show this to my students, thank you

@reasonformath 7 ай бұрын

Thanks! Please tell them I say hi.

@gur262 7 ай бұрын

This visualizes various concepts way better than most cycling channels ever did. Maybe a video on engineering lost/ignored could be nice. Bikeracing never accepted recumbents or aerodynamic fairings. Whether the geometry, especially Highspeed downhill, is ideal is also questionable given the rules squeezing racebikes into certain dimensions. Motorcycle racing once featured dustbin fairings for great aero. I assume thats more related to less power making topspeed a more important component, but if they were in fashion in racing they might be for normal motorcycles making them more efficient. When i look at cars I don't think the 4 seat arrangement comes from a place of logic either but rather as evolution from horse drawn carriages. I know a certain width is necessary to not fall over but outside of racing context seating people behind one another seems better. Just that at the point aerodynamics started to really matter, speeds got high, the layout we know was too established. Or so i assume.

@JavierBonillaC 7 ай бұрын

Fascinating!

@JayLato 6 ай бұрын

Amazing production

@hunt-showdown 11 ай бұрын

learned so much! thanks

@franadia5508 6 ай бұрын

One of the best videos I've ever seen

@reasonformath 5 ай бұрын

Thank you - really appreciate that.

@marc.silden 9 ай бұрын

Perfect!

@Surroundex2 7 ай бұрын

Great work

@adamsvoboda7717 Жыл бұрын

Very interesting, thank you

@jasonz7788 7 ай бұрын

Great video thank you

@Superwazop 7 ай бұрын

Incredible

@joefields719 Жыл бұрын

Thanks teach!

@asadabdulqaabir4006 7 ай бұрын

What? I can't believe that aerodynamic butt cones are not a thing today.

@reasonformath 7 ай бұрын

I know, Someone should start a GoFundMe to bring back the butt cone.

@ola_vii 7 ай бұрын

Good vibes video and nice animation. Perhaps Gentulio Campagnolo should have had a credital mention when speaking about the history of bicycling inventions related to gears.

@Leviajohnson 7 ай бұрын

Oh this is excellent

@danielreitermusic 7 ай бұрын

Cool animations! A couple small nits though - the ancient greek weapon 'polybolos' had an endless chain drive as far back as 250BC. Also, I think bicycle makers in the day of the penny-farthing had definitely conceived of using a chain drive. Many of the women's tricycle designs in that same era had chain drives for example. If you look at old photos the chains look pretty big and heavy though. I'm guessing that it just wasn't as practical back then with the chain technology of the time - and combined with the lack of pneumatic tires a large wheel was just a practical, simple, and affordable option.

@reference2592 8 ай бұрын

Fantastic

@micgalovic 7 ай бұрын

Good animations

@BigBeezyBtown 7 ай бұрын

This was awesome. Thank you

@reasonformath 7 ай бұрын

Thanks so much!

@AFV85 7 ай бұрын

Jean Loubeyre of Paris. He indisputably patented a 2 speed derailleur device called 'La Polyceler' in 1895 (French Patent and shimano took over being 100 years old now derailleur was invented well before 1937

@tranhai8895 Ай бұрын

Is the electronic groupset/shifter the new standard for Tour De France road bikes?

@williamwelmans8648 7 ай бұрын

Excellent video.!

@reasonformath 7 ай бұрын

Thank you!

@macsnafu 8 ай бұрын

I think butt cones need to make a comeback, if only for the photo ops.

@vinniepeterss 23 күн бұрын

whoa

@evangelistbricescott7182 6 ай бұрын

The ending 😂😂😂

@AFV85 7 ай бұрын

Bike radar has the storey and a 2 gear rear wheel system amd rear derailleur like an old front mech was used in 1869

@vinniepeterss 23 күн бұрын

❤❤❤❤

@Wasketa 7 ай бұрын

Very impressive, now the future for bicycles are the gearboxes

@kato_dsrdr 6 ай бұрын

Wait, so the bike chain was invented by da vinci? Damn.

@mtbalpinecounty 7 ай бұрын

💪

@dodginglions5163 7 ай бұрын

The butt cone should be reintroduced.

@Lucius1958 8 ай бұрын

Rather surprising that you showed Leonardo's chain sketch without even mentioning the bicycle drawing attributed to Salai...

@frankhooper7871 7 ай бұрын

Interesting and informative - but surprised no mention was made of hub gears, developed in the early 1900s.

@Cheesicle_ 7 ай бұрын

hub gears?

@fuerLutzi 4 ай бұрын

What about the bearings? I heard ballbearings were invented for bicycles. True?

@Happy_HIbiscus 7 ай бұрын

😊😊😊😊

@jamesmatheson9624 Ай бұрын

Because I have limited knowledge of bikes I can't do this project maybe you can Gears were meant to be put on a wheel for you to exercise your arms same as a leg arm Exerciser So when you move the wheel with your arms you start at a light weight and after a certain number of turns you increase the gears strength so your arms moves a heavier weight This is how people get muscles They lift small weights and then heavy weights The advantage of wheel with gears is you don't need the weights and can put on muscles anywhere Let me know if you understand Thanks for the video

@sweetalert480 7 ай бұрын

how about tire?

@bikerider4326 5 ай бұрын

1817 the Swiftwalker created by Karl Von Drais is the very first bike. 🤔

@cheesechomp3r554 5 ай бұрын

Why is the resolution 1x1?

@reasonformath 4 ай бұрын

The aspect ratio is square because I first posed this to my TikTok account, and a 1:1 aspect was a good compromise between the default horizontal aspect of KZfaq and the vertical of TikTok.

@danielchesley9802 7 ай бұрын

It's 3:38am for me right now why am I watching this??

@the.communist 7 ай бұрын

Didnt campy invent the derailleur?

@QuixoteX 11 ай бұрын

So... what about that butt cone?

@izysly6924 11 ай бұрын

Now you are just talking dirty. (Do it again)

@jacobjames1171 7 ай бұрын

4:10 early masher

@chillchilli2671 6 ай бұрын

Back then, derailleurs were considered cheating. 1970: front suspension was considered cheating. 1980: having rear suspension was considered cheating 2018: having a electric motor was considered cheating. I'm thinking the pinion gearbox is definitely gonna be considered cheating

@lese39 7 ай бұрын

I refuse to believe people though first in doubling the wheel size than to do a chain, gear or belt drive. When presented with the problem of "it's hard to steer the wheel you're pedaling" the immediate solution is to move the pedaling to the other wheel.

@reasonformath 7 ай бұрын

I hear you. The most obvious solution is easy to see with the benefit of hindsight.

@GbpsGbps-vn3jy 7 ай бұрын

And yet we have hi-tech derailleur systems that occasionally drop our chains \o/

@kendurham5684 3 ай бұрын

Engineering 101 for preschoolers

@jaykay3407 10 ай бұрын

There's a 900yr old temple in India with a bicycle carved in granite, on it. I dont think your time line is correct somehow.

@Diwasho 10 ай бұрын

Yes, there certainly was an even earlier version of the bicycle that didn't have pedals, you had to walk on the ground like the Flintstones while riding it. It was invented by the same person who invented the meat grinder.

@bikee1394 7 ай бұрын

yeah ofc everyone knows india invented everything first on the planet

@jaykay3407 7 ай бұрын

@@bikee1394 just not sanitation 😄

@DavidGS66 7 ай бұрын

The biggest problem is theft, 1/2 due to cyclists themselves underestimating the risk by not using a Ulock & registering.

@lebowskiduderino89 8 ай бұрын

I got drunk one day and tried to ride a penny farthing. I fell down and broke my coccyx, cocxyx? Coxyxc? Ha ha! I always wanted to write the word coccyx, coxyx, cocoyxx? In a comment! Am I the first person to write the word coccyx? In a comment? Let me know in the comments!!!!

@10000spidersinatrenchcoat 7 ай бұрын

Did you have to wear the butt cone? 😂

@bambukouk 7 ай бұрын

lot of nonsense about higher CogG being "harder to balance" actually the reverse is the case - the higher the CofG the easier it is to balance I know it not only from the theory, but also from practice 😜

@reasonformath 7 ай бұрын

With a higher center of gravity, smaller shifts in weight have a bigger impact. I ride a unicycle, and the short ones are easier to balance than the tall ones since a small movement in the arms is less apt to throw you off balance.

@bambukouk 7 ай бұрын

@@reasonformath I have no personal experience of unicycling, but I am sure the same applies. As you say "...With a higher centre of gravity, smaller shifts in weight have a bigger impact..." i.e. it requires less effort to keep bike balanced - kzfaq.info5C6cid5RBk8?si=v3IB2rtnwmVISp0L 🤪 I know how much more difficult it is to do the same on lowracer recumbent... 👍