making super fast bike

making a fast bike casero ever build

[@radiocontrolled9181]

You can increase the final gear ratio as much as you want. But the power in a pair of human legs i.e. a cyclist, remains the same. (higher gearing requires more power to push the pedals). So it doesn't make you cycle any faster if you're not on a smooth downhill and you have gravity to assist you. Then nevermind going uphill ..... you can forget about that. Get off your bike and push it while you walk.😁

[@jurekgadzinowski2895]

Yep, thats why it is pointless.

[@brianmeow]

ever heard of a pro cyclist?a climber?a comuter?a gravel biker?

[@punpck]

agreed, when comparing the revolutions/s from the start of the video with the end of the video, he probably just had a speed of 20km/h

[@TeamCykelhold]

@@brianmeow Have you ever heard of a pro cyclist that has a contraption like this? No? Well there is a reason why they don't use these. You can't climb with them, they are for smooth DH only.

[@davidcanet9666]

My friend. Is for efficiency . I Hope you understand . Thanks you

[@AndriyKor]

Может, я что-то не понял, но в чём смысл? Число зубьев задней и дополнительной звезды одинаковое. Т.е. передаточное число 1:1. Соответственно, эффекта не будет. Только потеряем на трении. Да и смысла в этом нет, т.к. большинство людей не способно крутить педали с нужной частотой (80+ оборотов в минуту) с передаточным числом 3 и больше. Тут уже нужен электромотор.

[@alexsarpele6477]

everything starts from the legs, you don't have strong legs, the invention has no value😂😂😂

[@freshmentosxxxx1709xxxx]

Well maybe then change the chainring ro something a bit smaller like 38 t 34 t or something

[@alexsarpele6477]

@@freshmentosxxxx1709xxxx it just made the bike heavier, it didn't do anything else

[@freshmentosxxxx1709xxxx]

@@alexsarpele6477 oh ok

[@robertarthurs328]

Yup only super fast if you can super pedal it.

[@robertRiVER09764]

But You run faste

[@snowcrest7863]

The "laboratory" conditions presented here do not account for rolling resistance and wind resistsnce. Your top speed will be no faster on flat, level ground than regular gears, assuming regular gears are already geared higher than the rider's strength. If it did work, I could gear my car to go 1000 MPH by just putting in high enough gears.

[@joaomarcoshalmenschlager7067]

Parabéns pelo projeto! 👏👏👏👏👏

[@acuriouseye]

Love the precision welding, and it goes like a cut snake. I saw you passing two or three buses!

[@ABB-bw6tc]

Going In the wrong directooon

[@benf101]

he passed them like they were standing still.

[@Mr_ravee_]

😂😂😂😂😂😂

[@gutzon100]

Teóricamente es todo posible. sin embargo, actualmente las relaciones de engranes para ruta comercialmente está 53/11 es 4.81 , hasta 60/11 es 5.45 con esta última relación superas los 40km promedio. Así que trabajamos con la relación 28/14 x 52/14 llegaríamos a 7.42 teóricamente, sin embargo la cadencia sería lo quizá uno no pueda sostener el rpm . Es un buen multiplicador de velocidad pero no practico para el cuerpo humano.

[@getov1147]

Ако трябваше, щяха в завода да му монтират тези предавки.

[@ZocksTv]

Versteht kein Mensch

[@pedroluisfuenmayorbalza7292]

Podrá dar más detalles o tendrá un video guía para mantener el par esfuerzo para mantener la velocidad por promedio 30 km/h

[@endorphineguy]

La deal este foarte nepractic

[@MURATSEYITHALILOGLU]

Is it possible to go faster in this case?

[@ketanpethe5982]

Useful for the bros who don't skip leg day! (⁠~⁠‾⁠▿⁠‾⁠)⁠~ Edit : on another note, modding it with a 250W rear hub motor and a controller in a pedalec configuration might help those who skip leg day as well

[@Maxladegomme]

Easy to turn the crankset when the bike is on flat road, but with a few D+ you will need to buy new legs. With 54-10 it will be already very difficult to crush the pedals

[@TheExcellentVideoChannel]

Nice work! What's the highest gear ratio? This would be great for bikes with smaller wheels

[@georgemurdoch1991]

This is a great video, I'm considering this for a fixed gear set-up. Thanks for this...

[@user-mb29068]

А теперь в гору и против ветра... Вот тут, думаю, все преимущества сойдут на нет.

[@RSK65]

Ты главное этому изобретателю не говори. Пусть сам всё узнает ))))

[@cbsn6711]

может он не знает есть педали с тремя звездами . тот же хрен только легче

[@Rob337_aka_CancelProof]

How refreshing it is to see somebody who makes KZbin videos who actually knows how to weld a bead rather than just multiple tacking / sloppy spot-welding. Great Job 🎉 (especially compared to everyone else I see on these videos)

[@TheKIMANO]

On the other hand, the idea of ​​simply creating a faster bike by gearing lacks knowledge of the available power and wind resistance. Doesn't it seem logical that faster bikes would already have been invented and widely available if it was that simple?

[@cpmorgan5000]

No, you're illogical - this bike has four gears working simultaneously, this has not been done before@@TheKIMANO

[@TheKIMANO]

@@cpmorgan5000 I am completely logical. Unless you can override the laws of physics, you can add all the gears you want. A TDF cyclist delivers, on average, somewhere between 220 and 240 W on a regular stage, and that must be said to be the top of what can be delivered. We are therefore talking about a force which, for car experts, corresponds to 1/3 HP. In addition, you have a wind resistance that increases exponentially with the speed. It's great to experiment and try new ways, but the laws of physics are what they are. The bicycle is an old invention that has been refined for centuries and a modern racing bicycle has almost no transmission resistance. But what little resistance there is after all becomes twice as great by adding twice as many gears.

[@cpmorgan5000]

@@TheKIMANO I was just playing

[@TheKIMANO]

@@cpmorgan5000 It's a bit embarrassing that I didn't catch it, but English is not my native language and I am sometimes provoked by "fantatic" free energy inventions. But I'm glad you didn't have to be taken literally ;-)

[@mel_camino]

Doesn't a bigger sprocket in the front accomplish the same thing with out all the extra stuff?

[@rossbrumby1957]

Yes, less drag from the chain on sprockets and less weight. Its pointless unless everywhere you ride is downhill though because you can only gear a bike up so much before its too hard to pedal. The builder is faking the speeds by using downhills to appear fast. As big a bullshit line as all those free energy electric motors videos.

[@LakshmananKannan]

Excellent hardwork

[@rodrigosantos3118]

Belo projeto! Agora falta botar um freio ABS pra segurar isso daí hein 😁

[@user-oc8tc6ky1o]

😁😁😁😁😁

[@toecutter8002]

There are bright minds in every country but they're even brighter when they make it happen.

[@joaoc_PT]

Question is, does it weight less than a 80 or 90T front chainring+chain links? And the increased complexity equals more prone to failure.

[@williammorris4419]

I'll take gear reduction

[@RenaxTM91]

You could get into ground clearance issues with a huge chainring, so for a MTB something like this would be better. and you wouldn't realistically need that big tho, you can buy a 70t chainring off the shelf and fit it with a 9t rear cog and I don't think anyone would be able to pedal that up to even a steady 90 cadence. It would need a huge downhill atleast. If you really wanna fly pair that up with a internal gear hub and you'll be going 90kph at 60 cadence.

[@stirfrybry1]

It adds little relative complexity

[@jurekgadzinowski2895]

Of course it doesnt, also the better way would be changing the cassette to the 12 speed one that has the smaller gear with 10, not 13 or 14 teeth like this one.

[@michwoz]

Fun fact: gear ratio is not a limiter of bicycle performance.

[@floridaeagle]

depends on the rider and what rpm the riders power band is. this would be perfect for a fast twitch person. ie anaerobic athletes.

[@michwoz]

​@@floridaeagle The problem is that fast twitch dominant cyclists are actually good at... higher rpm. I know cycling world jumped on slow twitch = higher cadence bandwagon long time ago but recent studies show it's more complicated than that at best. Speed of contraction does matter. Athletes with higher percentage of fast twitch fibers are better predisposed to higher pedaling rates. So I'd say this crank would be good for an athlete with A LOT of slow twitch fibers which sheer amount allows for higher torque.

[@floridaeagle]

we already know that fast twitch fibers create more force, more limit strength, more tension but for shorter durations. Red fibers are for endurance, sub maximal contractions over and over. Only one way to find out. At least we agree that starting out at a full stop in a high gear the advantage would go to the fast twitch guy if acceleration was the goal. @@michwoz

[@michwoz]

@@floridaeagle Of course. Although you don't need that much force while pedaling in most scenarios (even at higher intensities), during sprinting or at very low cadence coupled with high power, high rate of force development is required which only fast twitch fibers can provide.

[@nathanwoodruff9422]

_"Fun fact: gear ratio is not a limiter of bicycle performance."_ More fun fact: bicycle performance is limited to air resistance and gravity. Even more fun fact: larger sprockets cannot overcome air resistance and gravity.

[@alexyanson3314]

Regardless of gear combinations to increase speed, your speed will still depend on human power input.

[@jipjipson8744]

I think he tried to increase his torque?

[@ironfrogpress1526]

Very interesting as for a unique crazy build. But I don't understand how this clumsy rig would increase speed or perfoemace.😉

[@basiliobastardo255]

by adding a four stroke engine.. lol

[@alejandrocastro211]

Really cool! you seem to know your tools. I live in a fairly flat city and I spend most of the time in the highest gear ratio, I've always wondered how would be to have an extremely high gear ratio like that and this design is way more compact that just adding a huge gear. Also I would try to add an electric motor to that bike.

[@patrykK1028]

A time trial bike already has a higher gear ratio than that in the video. They can go 80kph and more whereas this showed a top speed of 70. You only need a big chainring, like 56 teeth

[@EricPeelMusic]

Its not more compact. Its heavier and less efficient. And it looks ugly. A big chain ring is beautiful. Just get a bigger ring.

[@Mcqueen143]

390km 😂

[@GeraldGuevara]

Nice work. Now you need a truck driving in front of you to block the wind so you can actually use the gearing to go fast.

[@cleciofreitaslima5366]

Parabéns pelo video,eu gostei,você é um artista e muito inteligente!Deu te abençoe

[@PP-cm4re]

Increasing the gear ratio definitely gives you potential for more speed. But you’re still putting in the same power with your legs. You’re not gaining any mechanical advantage by doing this.

[@jurekgadzinowski2895]

In fact he makes the bike worse, because more moving parts meant more rotational mass which means more watts lost in process. Basically this reduced efficiency of the drivetrain.

[@littlehills739]

lower tempo means more achievable ride for most for longer, stop hating

[@PP-cm4re]

@@littlehills739 lol how tf am I hating? I’m giving constructive criticism. Stop being a baby getting offended by everything.

[@littlehills739]

@@PP-cm4re constructive criticism? what was the constructive part?

[@mykota2417]

Lower cadence on flat improves cycling comfort. Higher tooth front crank does same.

[@jhonbanner9991]

Me encanta, la idea es como la dinámica de incrementar la fuerza o esfuerzo físico auxiliado de la ingeniería de los piñones, así como los cambios. Muy bien pensado. Definitivamente hay mucho que mejorar e inventar. Mil felicidades chicos por este gran aporte será toda una revolución en las bicicletas. Mejor dicho la vuelta Colombia nos quedó pendeja.😄. 👍🇨🇴🙏.

[@DiegoKotz]

Ideia otima, projeto bom , quem estar criticando ,não tem boas intenções para ajudar .

[@rafcfernandes]

Mais peso e manutenção mas deve ser boa para acelerar na descida.

[@paisajessobredosruedas1421]

Pues parece que funciona bien. Es como duplicar la transmisión. Sigue trabajando en la idea, podría revolucionar el ciclismo. Hay que verlo en subidas.

[@dorianbelen]

En subidas lo unico que tiene que hacer es equilibrar los dientes de cada crankset. Es Claro que es una bicicleta del alta velocidad y no seria practica para velocidad cambiante en una ciudad. Pero sin duda sera una maravilla para gente que vive entre pueblos cercanos

[@hectoryovera8889]

La relación es más dura .para pedaliar te cansas más . Desarrolla más velocidad pero pedales más duros... Exelente ideas!!!

[@benjamingomez4040]

No me digas señor obvio, en serio la relacion sera mas dura??? waooo quien lo diria... Porque los que hablan español siempre comentan ese tipo de tonterias?, no te vas a cansar mas, incluso te cansaras menos, porque lo que cansa no es hacer fuerza, es tener que pedalear muuuucho, eso es lo que cansa, cuando tenes que meter 100 pedales por minuto para poder llegar a 45km/h, te cansas mucho mas que si tuvieras que solo dar 20 pedales por minuto para llegar a los 45/h, aunque tengas que meterle un poco mas de fuerza, eso no es nada, lo importante es no tener que dar tanto pedaleo. Te lo digo por exp propia, yo anduve por mucho tiempo con un cambio muy liviano, hasta que me canse de ir tan lento a coste de tantos pedaleos, un dia me tope con unos ciclistas que me sobrepasaban por mucho en velocidad sin sudar una gota, me preguntaba como eran capaces de ir tan rapido pedaleando tan despacio y sin cansarse, hasta que descubri que era porque tenian un cambio mas pesado, asi que fui a que me le pongan un cambio mas pesado a mi bici (48 dientes plato con el piñon mas pequeño de 11 dientes) y ahora ando super rapido sin cansarme, con apenas dar un par de pedales voy rapidismo, ya ni me canso para ir a cualquier lugar. Aumentar la fuerza siempre es la mejor via en la bici.

[@justoalonso9446]

Mejor vario y con p inercial 😂

[@mohamedzaki3748]

فكرة بسيطة وعملية جدآ ...استمر يا بطل

[@AP-cu4xr]

Iam no technical guy but ,did not understand why this revolutionary techno logy didnt hit the mordern cycle production...Its really impressive !!!👍👍👍👍

[@ichbrauchmehrkaffee5785]

simple, it's completely pointless. All you're really doing is adding extra friction. more speed allways correlates with less torque at the same power input. Also, it's one thing to get the wheels spinning up to 60+ (couldn't tell from the video if it was kmh or mph) while they're not touching the ground and the bike doesn't have to overcome air resistance, which at these speeds is the main thing you're pedalling against. Want more speed, but keep it usable? Get a giant front chain ring and have the sprockets in the casette cover a large span of diameters

[@garlicbreathandfarts]

Very cool. How hard is to keep it running smooth?

[@zWjwR8biM_st]

FYI, there are already “multiple chain rings” in the market. Even your invention makes more friction because of the additional chains.

[@jurekgadzinowski2895]

Yea, it is pointless.

[@diyelectricbiker9361]

@@jurekgadzinowski2895 it's more like making a Video for YT.

[@nancyrosario8294]

Wow excellent idea,congratulations

[@jenskreibach9424]

The limiting factor are the legs. I don’t see any advantage compared to a conventional system with two or three gears at the front.

[@Record4u]

I watched the video impressively. The new concept is fast, but doesn't it take more power?

[@sajeevvk6739]

Of course yess

[@TeamCykelhold]

You you seriously asking if it takes more power to ride faster?

[@Alex-kr7zr]

Yes, because of physics. The footage in the end is fake/sped up.

[@rawevoli]

​@Alex it's not fake, its downhill

[@michaelbujaki2462]

It takes the same amount of power to attain the same speed, but the difference is that you apply more force more slowly. Thus, your legs make fewer cycles to get the same distance. This is great for the people with overpowered legs, but not so great for everybody else.

[@adrianoalmeida7790]

Com pneu fino, minha bick ja passou dos 70km/h, várias vezes. Não consegui entender a vantagem dessa experiência. Mas deu vontade de testar 😉

[@NL-sx6lm]

concordo

[@jayjoyner109]

Wow 😳 that's one hell of a 🚲 bicycle 🔥🔥🔥 BEAST 👹

[@Robert-ko8fi]

I was really hoping to see him on the freeway going down a steep downhill section road just flat out giving it hell, all he's got to see the max speed he could do.

[@me.omprakash1]

Nice brother ❤️

[@robertoe.germanjr.2631]

Still the same as normal set up, human power is still needed...

[@user-ce4ri8ds3k]

you guys are correct, still defending on human straight and stamina however, compare to regulan gearing this would be more effective i think

[@fabiotuggy3340]

Just put the small sprocket at the pedals and larger sprockets at the rear. Skip the additional friction created. The problem is nobody will be able to get this bike moving. The initial force required to get the bike moving will be pretty large, not to mention hills. At least i will not be able to use this.

[@ciwanemcctv1428]

Very good video and thank you for sharing your idea 😁😁👍

[@thepoultrypeople]

Nice mod, i look forward to seeing more made and ridden around town post haste!

[@santiagopfingst6650]

You are a genius man, that is the future of the transportation👌👏👏👏👏💯💯

[@diyathomevn]

you did a great job, you are very good, the bike is very nice, can it go uphill, thank you very much

[@dss12345678]

Puedes poner todos los engranajes intermedios que quieras.... la fuerza necesaria para moverlo será cada vez más... pues a más cadenas y peso, hace falta más fuerza para vencer la resistencia y el peso.

[@benjamingomez4040]

waoo en serio??? no me digas.... obviamente necesitara mas fuerza, el chiste aca es que la fuerza es muy facil de conseguir, solo es entrenar un poco y listo te acostumbras al poco tiempo a manejar ese cambio, lo dificil es tratar de superar los 40 km/h con un plato de 38 dientecitos, tendrias que dar 100 pedaleadas por segundo para llegar a pasar la barrera de los 40 km, perooooo, con un plato de 60 dientes por ejemplo, podrias alcanzar facilmente incluso los 50 km/h con solo dar 50 pedaleadas por minuto, al final la cadencia es mucho mas dificil de conseguir que la fuerza, por eso es mejor añadir mas fuerza a la bici, que cadencia a la hora de mejorar la velocidad.

[@dss12345678]

@@benjamingomez4040 estás hablando en serio? No, verdad? No has montado en bici en tu vida.

[@sergiosalazaraviles4616]

@@benjamingomez4040 El amigo es de los que cambia las llantas para que el carro vaya mas rapido.

[@angelicafernandez9831]

​@@dss12345678más o menos, tendrías que ser un ciclista de pista para entrenar correctamente ratios así de altos, es posible pero igual en pista normalmente se maneja más rpm que potencia, porque no importa que puedas mover 14/68 si no tenes las rpm para llevarlo a altas velocidades

[@vladimirshnyakin6865]

Не свернешь

[@roman_abelardo]

Realmente tiene sentido tal modificación... sí puede ir el conjunto armado en la misma rueda🤔 Mayor cantidad de cadenas afecta la eficiencia 🕵️

[@fidelgomez1842]

You made it I culd only think about doing what you did. I hope you soon make it available I would love to try it with an alternator .

[@phillipanderson2607]

Reminds me of the CVT transmission set up in the nissan. The configuration of the chain and gear ratio. Very cool. If you make it a electric bike no telling how fast it will go. That could be kind of scary though if you wreck.

[@GB-vn1tf]

No need to do that though, just put on a bigger front chain ring and you have the same result. My Bafang powered bike hits 59kph with normal mtb gearing as it is.

[@bryanbaker5942]

I’m sure it will break down like the CVT in a Nissan too.

[@meneldil7604]

remine me of a honda cvt gearbox for a mtb

[@dang7540]

The road rash could pretty ugly without the helmet...

[@michaelsanders6077]

No telling, you actually could tell very easily with the right bits of info. A standard bike gear ratio spinning at 100 revolutions per minute in a 52 12 chain ring cassette combo would yield a speed of around 65 mph. Plenty fast. Also if it's a crap bike and/or aluminum frame that's when stuff start vibrating off and breaking. Unnecessary and esthetically makes me want to vomit and my eyes want to commit suicide.

[@ghazikutbi3206]

I would like to see this bike in the local market in Riyadh with the same sales price as the regular ones. You have applied the thought well. Good.

[@thomasobermuller8848]

cool idea and well done. So you can speed up behind a big truck :-)

[@xbremailgmail6341]

I live in São Paulo capital in Brazil, I thought this, that you did amazing...

[@svarogua9]

З горки за ветром покатит, а что делать на подъеме? Законы физики никто не отменял.

[@user-yd3ir4wb1m]

Нужно делать электробайк с педалями, гоняй на электро тяге, потом крути педали как сядет аккум.

[@svarogua9]

@@user-yd3ir4wb1m можно делать гибриды но это уже другая тема. Здесь использована не отключаемая дополнительная раздатка, создающая только проблемы. Вопрос еще и в безопасности - падать на скорости 60км на велике, а всё может быть, эко как?

[@SnowmanJoe66]

Super smart idea. For someone with strong legs, thats so cool and handy. Force to push hasnt been the issue personally but high rpms like any motor(human capability), there is a limit

[@DoomNerd67200]

You indeed need alot of leg watts

[@jurekgadzinowski2895]

Lol, ifyou cannot peddle at the rpm of 60-90 then it is time to see a doctor. This gearing is insanely pointless. Average commuter cyclist is able to peddle at the 70rpm. 70rpm on this bike is more than 100kmh, how the hell are you going to acclerate to the 100kmh on a such high hear? the lowest gear at 60rpm makes you go 30kmh. And the peak power of human legs on a bicycle is at around 100rpm.

[@nathanwoodruff9422]

@@DoomNerd67200 _"You indeed need alot of leg watts"_ the one problem is you are limited to the amount of torque produced by your own body weight. Any more torque than your own body weight would be lifting you off the saddle instead of pushing you forward. Well, that is unless someone installed a seatbelt.

[@fusemalaysia840]

great invention...this is serious invention...it's gonna super fast.

[@danielbelmir0]

Maybe if it had enough gears so you could smoothly to a higher gear, it would be useful. For me, when it's flat I almost never get above 40km/h, but downhill, above 50km/h I can't really contribute to speed by increasing the cadence. That's where faster gear rations would be useful. But it depends on where you're cycling, right here i can't just use the roads because the cars are going at like 100km/h, but in the other city i lived, i would actually use the roads and go downhill faster than the speed limit(the speed limit was 40km/h in the most dangerous turns, 60km/h in some areas and 80km/h in just a few parts). So where I live I use like the side of the road, that is not well mantained, there are pedestrians sometimes, cyclists in the wrong direction(like the dude in the video) and tree branches. So yeah, my point that 60km/h in a well maintained road, where you dont risk getting hit by a car is much safer than going at 40km/h on the side of the road, in tight places, doing turns with no visilibility. You can get to speeds like 40km/h in most bikes, and in other ones you can get more than that, so most of the time you don't need and want to be fast, but it's good to have a fast gear so you can get to speeds like 60km/h more easily.

[@cpmorgan5000]

what about 10 gears or more?

[@pauls5745]

Safer to match speed yes, but wheel bearings and tires handling those speeds would be a concern. Things could get toasty.

[@jonathanheinzrudolfozeplin7128]

O problema vai ser quando a relação gastar, fazer a troca dos componentes será algo muito trabalhoso.

[@liniquebahiense5186]

Não vi vantagem nesse projeto não, só da pra usa a marcha traseira!! E sem falar que solda a catraca não é o ideal, o melhor é ter feito algo que pudesse ser trocado quando desse problema!!!

[@MrLeancob]

Seia bueno que el autor del vídeo nos contará sobre sus impresiones con este sistema como realmente se siente y si es bueno para subir colinas o solo es para terreno plano

[@benjazz8128]

No es obvio que para subir colinas no sirve?

[@MrLeancob]

@@benjazz8128 pues no sabría determinar eso por el tipo de relación que maneja pues el plato delantero es pequeño y si el cambio trasero sube al plato mas grande se supone que debe quedar un cambio suave para subir terrenos con pendientes, por eso le pido el favor al autor del video si puede explicarnos.

[@user-iw2my3kn2m]

Прикольное решение, простое и работоспособное, но опытным путем я выяснил что 48/11 это мой предел физически, конечно хотелось бы попробовать 53/11. То есть для большинства людей это просто слишком хорошо

[@alexeisdelasalas5339]

can we use this to make an etrike rear axle go faster? like maybe use this upgrade to create a sort of speed gear adapter for the differential gearbox?

[@SuperTravele]

Ты просто не сможешь разогнаться. Всё это бесполезно!

[@SuperTravele]

Если только с горки с попутным ветром.

[@MuratAtici.EricBurdon]

No

[@user-ih5je7mu9q]

Разве что под гору

[@vittocrazi]

Esto es un proyecto por diversión. No una innovación

[@falkbrosgen221]

Changing transmission ratio - Big whop... Respekt for anyone that actually is able to use this!

[@Juan_Boanerges]

Amigo, me encantó tu invención.

[@user-ph9qh1io4d]

Для движения с места или в гору не плохо было бы поставить вперёд мотор колесо

[@user-ji5gp8nv7w]

Как называется втулка с внешней резьбой и двумя шлицами на площадке? Никак не могу найти от чего эта деталь, может она мопедная?

[@user-ns4wm6ie9g]

Старая шоссейная система чашка с педального вала можно любую использовать подходит

[@reaquenchorea5735]

La idea esta super buena, pero me gustaria mirar que tan rapido puede ir en una pendiente hacia arriba, espero no pese micho la bicicleta porque tendra que empujarla o cargarla.

[@vicenteyep]

Guaau i want one. I think that if you try with fixed gear and same configurarion probly you get more velocity.

[@drstarrow1976]

Wow it's cool 👍I'm trying this thanks for smart ideas 💡

[@DavidCanet]

please dear sir. did you make a copy of the invention?

[@DavidCanet]

please have you tried

[@EBIKESWN]

Imagina com motor elétrico.

[@greg0063]

Kinda cool if you are always in the top gear and it's just not tall enough for you. (Unlikely though).

[@djwave28]

Do you really reach that speed on the road, or is wind friction too much?

[@said365said]

This gear ratio is needed when the wind is blowing at your back, when driving downhill, for use with an additional engine, in hang gliders, and maybe for some other purposes!

[@Inmate533]

Bikes used to have a front derailleur for multiple sized cranks. I hate that this went away. Regardless, the most effective way to increase speed while reducing the amount of force needed at the pedal would be a pulley system.

[@plaxy100]

no many bikes still come with front derailleur. they've just fallen out of favor cause there mostly useless, in regards to the number of gears you'll actually need or use whil out on the road. the advantage of a front derailleur is not to get 21 speeds but to have a down shift to a smaller gear which is handy and smoother when going up the hill. where changing to a bigger gear on the back to downshift is more clunky when your required cadance is hard to maintain. with most e-bikes and a lot being hub driven its actually better just to have a small gear ratio where its easy to pedal to get started and a high one to switch into when your moving along nicely as you don't need much else.

[@FlyingSavannahs]

Thanks @Plaxy100, I've been out of mtb since Sram just started introducing the XX & X1. Now back in with post-divorce budget (~$0), I'll eventually get to upper level cranksets. For now, the frisbee-sized ninja stars appearing on the granny side of 12 speed cassettes make me wonder how close these ratios still are. My Southwest US racing commonly involved >1 hour climbs at over 10,000 ft. I needed to keep the granny gears close together as I have a very rapid narrow-range climbing cadence. I just don't see how the fine tuning can remain for the most demanding XC riding when you reduce all prior solutions to a 12 speed. Thoughts? (I know, I know, I can plug the numbers into a spreadsheet to get all the ratios, but I suspect that on-the-trail may feel different than on paper.)

[@Aphorism89]

Front derailleur is only good for stop acceleration. Useless otherwise, just a piece of metal adding weight, dirt and rust risk

[@Inmate533]

@@Aphorism89 Higher top speed is another reason for it. The tiny single cranks that come on bikes today suck ass for everything except coasting downhill.

[@Aphorism89]

@@Inmate533 luckily they are easy to replace and relatively inexpensive. I mean, one can eventually take them out and buy too quality ones instead. I wouldn't mind having 2 plates, used to have that on my road bike and it was great. But now a days I'd always try to minimize. The least elements, the least maintenance and risks :/

[@michaelngan99]

This system is quite ingenious. It could work with a mid-drive electric bike. The motor could be attached to the first freewheel. By able to use a small front chain ring and a large rear cog, this ebike could have insane high torque for climbing steep hill.

[@ericbaillie1098]

It would also need an insanely heavy motor drawing insane amounts of power in order to get that high torque. You would get up maybe one hill before needing a recharge.

[@GB-vn1tf]

I'm running a mid drive 750w Bafang bike now, the torque using standard mtb ratios is enough to climb any hill easily. There is no point in this system with a mid motor bike, especially as I'm getting 59kph easily as is.

[@ericbaillie1098]

@@GB-vn1tf Basically the fellow who produced this video was showing off his welding skills by not improving something that needed no improvement.

[@bartholomewceremony6981]

@@GB-vn1tf snap the chain and perhaps?

[@bartholomewceremony6981]

@@GB-vn1tf I'm going to be trying this anyway I have a couple of electric bikes with rear hub drives I've been looking for a really large front gear so I could pedal at high speeds I'm going to go ahead and try this anyway and I'll let you guys know how it works out

[@marlonjohnfreyburger6242]

Ce jeu de poulie est exactement la même configuration que sur la fameuse et increvable Peugeot 103, sauf qu’ici votre grand plateau à dents du vélo sur la 103 c’est avec courroie, je trouve votre idée très bien pour ceux qui veulent faire du vélo sur de très grandes distances, c’est génial.

[@JohnSmith-cc8pb]

Can you add a 3-stage gear shift lever? You can convert the gear ratio for that gear

[@futurosolucoes9325]

Ótima ideia para um gerador de energia... Multiplica a velocidade... Para bicicleta só serve no piso plano, subida não vai

[@ringodekroon]

if you combine it with a belt powertrain, so you can make speeds in frond of the bike and put a cap over it :)

[@ruedacastillo]

What is the diference if you do It in the principal plate and dont use two?

[@philipcooper8297]

Road bike gearing.

[@goobytron2888]

It seems like there may be an easier way to do this. Like a bigger chain ring. I’ve seen them at 64 teeth.

[@akisalmenaho8473]

Or just change the rear sprocket. Or both. Either way, the end result is the same.

[@jeanyluisa8483]

@@akisalmenaho8473 But both ways would end without having a video ;-) I'm pretty sure the video was the only intention for thos build, the bike will be pretty useless with that high gear ratio.

[@jurekgadzinowski2895]

Like a real casette, not that 20 year old vintage crap, with the smallest gear with 13 or 14 tooth, instead of 11 or 10.

[@gustavocrespo298]

Felicitaciones al ingeniero..!

[@adrianherrera3621]

tiene mucha fuerza para alta velocidad , pero como haces para salir rapido con esa transmision? por que no muestras eso en el video?

[@kalkun-nuklak]

Just get bigger chainring (front gear) and smallest sprocket (rear gear) but you gonna need a more powerfull leg to pedal because its so heavy to pedaling 🤣

[@Rob337_aka_CancelProof]

So I'm guessing your new configuration doesn't require those extra bearings that fell out of your cassette...? That's very interesting. Also what was the purpose in taking the cassette apart just to allow some bearings Fallout and then put it right back together again without adding grease or making any other modifications or was the purpose just to remove a few tiny steel balls for unknown reasons? I'm just a couple of minutes into the video if that and already thoroughly confused I would have seen this far so if you could please elaborate on that I would appreciate it because that would help me eliminate some of the confusion (so far)

[@jeanyluisa8483]

At the first moment I thought the same. But if you really look at it, its no bearings that fell out. The parts that "fell out" are the claws that prevents the cassette to run free in both directions. As he shows after putting it together again, the casette can run free in both directions. Usually a casette can run in free in one direction only, otherwise it wouldnt turn the wheel. I think that build is nice made. But it's of course still a very old and well known technology to connect gears ion series for increasing the gear ratio. If it would make any sense manufacturers of bicycles would use it since a long time.

[@gangstreG123]

The parts removed were the ratchet pawls (they make the click or buzz sound from the rear wheel). He removed them because that part is a rear hub and cassette. Without them, it will spin freely without engaging or clicking, just a straight bearing.

[@Rob337_aka_CancelProof]

@@gangstreG123 I suppose I should learn more about bikes then if I'm going to be serious about building one. 45 years ago when they were my primary mode of transportation I just rode them, wrecked them, and Hustled up a new one if it wasn't ridable anymore

[@hermantelbo6283]

I build many speed and electric bikes as engineer for fun as a hobby. But you can't go faster without extra strength. No extra gear will help and only increase resistance by the extra chain and gear wheel and bearing. And the front gears you can't even change here. Just for the show. .Than how he welt an aluminium bike so easily? You need a Tig welder and big chance the frame may weaken and deform by heath. without supporting the whole frame in a moul before welding So this must be a heavy cheap steel bike because he used a CO2.welder. If you want to gain more speed ? build a lighter bike...or a carbon bike. That will really do rhe trick. But it Looks impressive....

[@mikecaster4612]

The only "fly in the ointment" is the fact that take-offs are really slow - even gearing down in back does not help. The video was interesting, the next one should be a motor video, need to get an electric motor and mount it so it can help move the bike.

[@futurosolucoes9325]

Se a segunda coroa fosse maior, a bicicleta ficaria mais leve para pedalar

[@MDSOMBRA]

Pelo que entendi, não seria melhor que todas as coroas maiores tivessem 52/53D e somente a pequena fosse de 9D ???

[@MuratAtici.EricBurdon]

I will build it too

[@Niknikich62]

Лучшее - ВРАГ ХОРОШЕГО!)) 😂 ВСЕ РАВНО МОЩНОСТЬ ЧЕЛОВЕКА Имеет ПРЕДЕЛ.

[@CoolIdeasDIY-qv1nz]

Very cool👍

[@jdrissel]

I think that bike ignores the fact that all directions on average are uphill and against the wind when you're on a bicycle, and the extra friction losses do not help either. Look at how the land speed record bikes are built. They have huge chainrings and tiny sprockets, but only one of each...

[@strobi0001]

Now you can comforrably ride with cadence ~10

[@tepianloop]

hahahaha

[@vovan515]

Сопротивление воздуха увеличивается пропорционально квадрату скорости . Покажите в движении скорость 70 км/ч .

[@andrejshamin1452]

Неэститично, но практично. Можно поставить планетарку, и можно переключать скорости)

[@guest-hg3pv]

Hola te comenté en un video si se puede hacer una bici eléctrica con el motor de una amoladora y una batería de moto ?

[@Kart333]

Не нужно делать электрический велосипед, это для лентяев. Можно маховичный сделать)

[@samuelnogueiraandrade2089]

Mais que bicicleta foda viu goste muito

[@ilmaio]

The air resistance and ground friction limit the maximum speed reachable by a bicycle; a very long ratio will diminish the pedal impulse rate at the price of a harder effort. Too long ratio will tire the cyclist down uselessly, without granting more speed, and the slightest slope will render the bicycle even more useless. Adding sprockets adds weight and mechanical friction, making the bicycle - eventually - slower. Bicycle ratios are calculated by engineers, allowing to reach the max speed at the correct rate of pedaling. If speed is not sufficient for you, just add an engine, which is the only logical solution when human power is insufficient.

[@miguelp4812]

Requires over 3000 watts to sustain this speed. No biker is capable of this. The wind resistance alone is almost 30lbs. Imagine running while someone pushes against you with that force. You wouldn't be able to go much at all.