It's been done a long time ago with just higher gearing ratios. A bike designed for a velodrome has extremely high gearing ratios, and it's not uncommon for racers to get over 50MPH with people even being killed during events. The high gearing ratio is very hard on your knees. I used to bike a lot when I was younger, when I got into my mid 20's, biking in the lowest gear all the time started to effect my knees. Trust me, you don't want to ride something like this once you start to loose your cartilage.
@@vanshbhavsar9024 You probably don't bike a lot, but if you have a bike, try to bike in the top gear at all times. This WILL grind your knees. What is demoed here is 10 times worse. I used to bike a lot, and I was always in top gear unless I was climbing. This is an interesting example of gearing ratios, but there is a reason we don't have them at this level. Believe me, you will age and get old, and this bike destroys knees. I know 30 years is hard to imagine, but if you don't do anything incredibly stupid, you'll be here in time and be astonished you are. Live well, and live long.
Scientifically, no matter how much u increase speed by gears, it will take the same amount of effort from you to reach point B from point A. That's because the more gears you increase the more difficult it would be for you to pedal and you will reach point B faster at the cost of getting exhausted sooner. On the other hand if u use lesser gear you will reach point B slower but this time u'll get exhausted slower as well. In both cases your exhaustion after reaching point B will be the *SAME* , that's my point...... Still if u have doubts here's some physics for you: Let's consider the total force that you have applied on the pedal throughout the whole path be "F". Now let "T" be the total time taken to reach point "B" from point "A". Suppose you are moving with a constant speed. Also let us suppose that your gear combo is able to make you go *"n"* times faster/slower. But time, now *"T"* is *inversely proportional* to "n" but "n" is directly proportional to the Force, *"F"* you are applying on the pedal, because you are *increasing speed at the cost of losing mechanical leverage of the pedal.* So, *n varies F ---(1)* & *n varies 1/T ---(2)* From (1) & (2) we get, n varies F/T Or, n = k × (F/T) Or, *k = (n × T)/F ---(3)* [Where, "k" is proportionality constant] Case 1: When your gear combo increases your speed. Therefore "n" increases to "n1", "T" decreases to "T1" so, *k = (n1 × T1)/F1 ---(4)* [Let us assume the force be F1] Case 2: When your gear combo decreases your speed. Therefore "n" decreases to "n2", "T" increases to "T2" so, *k = (n2 × T2)/F2 ---(5)* [Let us assume the force be F2] From (4) & (5) we get: *(n2 × T2)/F2 = (n1 × T1)/F1* But *n2 × T2* = *n1 × T1* = *a constant* _[since, from (2),_ _n varies 1/T_ _or, n = constant/T_ _so, _*_n × T = constant_*_ ]_ So, *constant/F2* = *constant/F1* Or, *F1 = F2* *↑ This proves that the total force that you applied on the pedal throughout the journey from point A to point B is same no matter what your gear combo is.* Additional fact (for those who still gonna point out biology stuff hoping that it can prove me wrong): it's true that our legs are designed in such a way that it cannot change the amount of effort taken linearly with change in rpm. But still I am saying that cycle, friction with the road, gears, and all other factors will make our leg muscles lose same amount of chemical energy at the end of the journey. Because at the end the work done by you is the same as the distance is same. The only thing you can increase or decrease is the force u apply on the pedal which can make u go faster by decreasing the time it will take or vice versa. Your cycle will take away same amount of energy from you after u reach point B. But well to make your point legit we have to consider the energy radiating out from our muscles in form of *heat* and getting wasted, to counter that heat our body produces "sweat" to keep ourselves from overheating, now yes that is something that I haven't considered because I was talking about cycling in daily life, not Olympic cycling races where they cycle for a long time at extreme speeds. So what I'm trynna say, is that to reach a destination with the help of anything be it a vehicle, be it your own body, or be it an another living being carrying you, the work done to do the displacement is always constant no matter how fast or slow u reach that point. The result never feels the same because we waste a lot of energy due to friction, and all other stuffs. Even in a car, the energy needed for the work to be done is always a constant, if the result is not a constant then that means energy got wasted in form of heat, sound or in some cases light. So at lower gears a lot of energy gets wasted in form of heat. But even so if u minus this wasted energy from the one which was needed to reach you to your destination it will be nearly the same ("nearly" because friction causes energy loss at higher gears). U can go and ask "Veritasium" himself if u doubt my brain. I'd love to get roasted by him if I'm wrong. I hope this ends the debate.
Actually scientifically it takes a different amount of effort because the human legs are not perfect theoretical energy sources. Human legs are most efficient in a narrow range of cadence, around 70-100 rpm. It uses less energy to do 50kph at 85rpm than it does to do 50kph at 40rpm or 140rpm. At 40rpm the force required is too high and it overloads the muscle, and at 140rpm the nerve channels become fatigued quickly and also the leg mass becomes increasingly a factor. Towards each side of the extremes of gearing, the nerves and muscles fatigue quicker, but for different reasons.
You guys are free to believe what u want. (Also, keep scrolling down a bit to see where I have replied to a legend named @B C ) Edit: For God sake.. it takes so much to make ppl understand a simple concept.. even after that they keep fighting for proving their own opinions which is false.. -_- I edited my comment above, HOPE it clears the doubts now. *Think rationally my pals...*
@@igxniisan6996 I think you might be confusing the amount of work (W=FD) done (which is the same no matter the gear) and the human effort which does have an optimal range to maximize performance.
Clever , would be great with a tail wind or downhill :) , a bit hard on the old knees though , if you could make the pedal crank arms variable length while on the go to suit the extra torque required , that might be interesting to try .
It would be interesting to do some calculations to see what would fail first on a stiff hill: 1) rider's legs, 2) gear teeth, 3) chain, 4) gear connection point, 5) pedal crankshaft, 6) pedals, 7) something else. I would also be interested to see a top speed without the modification using GPS and a top speed after.
He should refine it. Maybe add intermediate gears or a tiny electric motor in the wheel to ease the torque. A lighter bike would help too. Cool idea anyway ☺
Не стоит забывать риск зацепиться обувью или одеждой за дополнительную звездочку. Лично мне кажется, первее придет конец раме. Она не рассчитана на такие нагрузки, к тому же металл испорчен при сварке.
Подходит для ровных дорог, а вот уклоны тяжело будет преодолевать на таком. Потому и придумали системы переключения передач типа Shimano. Если нужно выжать весь скоростной потенциал, достаточно просто поставить 7- или 8-ступечатую кассету с минимальным числом зубьев на звезде 11, а ведущую звезду поставить 52. Тогда на 1 оборот педали будет приходится 4.72 оборота колеса, что вполне оптимально, в зависимости от диаметра обода.
Да не будет это работать и на ровных дорогах. Проблема разгона велосипеда далеко не в передаточных соотношениях. Ничто не помешало бы установить переднюю звезду хоть на 100 зубьев и разгоняться до сотки. Куда вы денете сопротивление воздуха и трение качения? А именно они и тормозят велосипедиста, причем их сопротивление растет тем быстрее, чем больше скорость. Так, например, при скорости 20-25 км/ч сопротивление воздуха не особо ощущается, едешь расслабленно. 30-35км/ уже тяжелее, 40 и выше- приходится "продавливать" воздух, это понятно уже по трепыхающейся одежде и жуткому ветру в ушах. Воздух на больших скоростях уже похож на жидкость в некоторой степени.
The principle is good, but there are lots of problems here too. Firstly the rear freewheel he removes is probably a 16 tooth. It would be far easier to replace the rear wheel with a freehub design which would allow an 11 tooth sprocket. Similarly it's also easier to increase the chainring size at the same time. Secondly the stresses going through the chainstay will be enormous....far more than the tubing was designed for. However I like the concept though. To have a secondary gear would allow for incredibly high gear ratios (or low ratio too). Interesting for record attempts etc, or recumbent bike that achieve high cruising speeds.
не обязательно. он сделал с одной дополнительной звездой, мы 17 лет назад делали с 3мя дополнительными звездами. и главная звезда была большая 84 зубца размер шатунов 145... для разгона до 25км было тяжело из-за размера шатунов и натяжения цепей... но потом все это компенсируется... был предназначен для высоких скоростей. на свободной езде развивал 88км. максимум разгоняли до 133. поставили мотор колесо в добавок ездили 155
It's been about 7yrs since I've worked around machinery as in machine repair department. At first didn't see the difference was then started to think once again. Thanks to you, no blaspheme intended, I see the light once more! Very ingenious!
If you knew anything about practical science and applied physics you would realize that the middle sprocket makes absolutely no difference to the final ratio between the front and rear sprockets.
@@MsMara287 I'm your first like. I'm just a simple machine repair guy, nothing more. Plain and simple, like a Amish or Minnonites simple.... Thanks for that invite of applied science, I love science, history and mathematic stuff.....
@@MsMara287 Actually, it does something: It adds friction, making this "very ingenious" design less efficient than having the same gear ratio between merely two gears. But yeah, anyone with a basic understanding of "applied physics" as you called it ("Technical Mechanics" would be the appopriate course in engineering studies) would see within 2 seconds, what is really going on here
Dos detalles. 1.-. El primer plato es de 48 dientes , el segundo de 39 y vos piñones de 16. Según el ensamblado por cada vuelta de pedal, se obtiene 7.3 vueltas de rueda. Eso se puede superar con un plato de 60 dientes para bicicleta plegable junto con un piñon de 8 dientes para BMX. Es decir no Hera necesario, por otra parte hay quienes han instalado platos descomunales para tener desarrollos mucho más largos. 2.- se requiere de mucha fuerza para mover esa trasmisión. Incluso los profesionales utilizan desarrollos mucho más cortos. Ejemplo Contrarreloj 58-11 (5.27 vueltas de rueda por cada vuelta de pedal) Ruta 53-11 (4.8 vueltas de rueda por cada vuelta de pedal) Xco 38-10. (3.8 vueltas de rueda por cada vuelta de pedal) Bmx (entre 2.4 y 3 vueltas de rueda por cada vuelta de pedal)
Yo al tipo no lo veo haciendo tremenda fuerza para pedalear y agarrar esa velocidad al menos en el vídeo se ve relajado y no puedes poner era con h Bro 😐
@@rodripx2186 si realmente fuese eficiente se usaría en las bicicletas de competición... De hecho si sabes de física sabes q no sirve el esquema planteado
У многоскоростного на высокой передаче крутить трудно и чувствуется сопротивление ветра. На более повышенной просто сил не хватит. Хуею с таких видео ради проммотров
you should show the amount of force needed to ride the bike before and after or set it on a stationary bike frame and test the resistance and show yourself stopping since you removed the coaster brake
It's really hard to pedal though, reverse the gears ⚙️ so we can have torque but not speed we can't get both isn't it Haha... Well made man really awesome 👍
I like it. You might be able to add a stack of shifting gears atop the orange gear that you could use to shift to a better ratio on hills. I don't see anywhere else conventional bike parts would work. (Edit nevermind look at the clearance, I think this one stays 1 speed)
You could just use a shifter with some sensible ratios. 3 gears in the rear is enough to drive up a hill and drive faster on flat ground than you will ever want to on a bike like that.
In essence you've constructed a heavier, odd-looking overdrive gearing, very much like what internal bike hubs have. Of course the overdrive ratio is 2.43 : 1 , unlike an internal 3 gear hub which gives you 1,33 : 1 on the "normal" chainring/sprocket ratio
the manafacturers make a 6 to 12 speed sprocket for better purpose for clim flat and down portion of riding, but u make a gear for only flat and downhill,
You have to be strong as a beast to power that top speed. Higher gears have higher top end but it divides your torque to overcome the tendency to remain still.
Two details. one.-. The first chainring has 48 teeth, the second has 39 and your sprockets have 16. According to the assembly, for each revolution of the pedal, 7.3 revolutions of the wheel are obtained. That can be overcome with a 60 tooth folding bike chainring paired with an 8 tooth BMX sprocket. That is to say, Hera is not necessary, on the other hand there are those who have installed huge turntables to have much longer developments. 2.- A lot of force is required to move that transmission. Even professionals use much shorter developments. Example Time trial 58-11 (5.27 wheel revolutions per pedal revolution) Route 53-11 (4.8 wheel revolutions per pedal revolution) Xco 38-10. (3.8 wheel revolutions per pedal revolution) Bmx (between 2.4 and 3 revolutions of the wheel for each revolution of the pedal
Si vas a usar google translate por favor arregla primero los errores del original... porque la esposa de Zeus no tiene nada que ver XD jajaja y "force" está mal en el contexto. Y me reí con "Turntables" jajaja
Projeto incrível, adoraria experimentar. Tem que ter muita perna pra explorar o máximo desse sistema. Deve ser incrível passar de 40km/h e ainda ter relação pra ir muito mais além. Parabéns.
Como curiosidade, vale. Se você mora em lugar plano, e se tem perna pra embalar, pode até ter algum uso (mas haja perna). Agora, se pegar vento contra, subida ou se tiver muito semáforo no caminho... 🤣
@@jeffersonallan4903 olha, depois de muitos anos de encarar subidas brutas, meus joelhos já não querem mais saber disso não. A métrica agora não é watts, é sorrisos por km 😁
53/39 na frente e um cassete 11/25ou mais ,faz isso usava essa relação em bike com aro 26 com rodas leves e pneu 1.0 ainda vou repetir esse projeto novamente recomendo pois já tive
Make a hybrid boke by dding a geared electrical motor to help you with the needed start torque, especially in hills. You may even turn off the motor once you reached the high speed and the motor becomes a dc generator that charges the vattery
hope that there will be a part 2.. for you to continue working on the modyfi and additional gear..ofcoz for the hilly and uphill road.. . you are the one who works on it..I bet you can do it sir..👍🙂
The next part will be about modifying the legs, so they can manage to provide the torque through such a high ratio. Anyone who's ridden a multi-gear bike understands that.
@@masterbaiter338 uh, not so much. there comes a point where it's harder on the knees than it's worth. And to answer Crusader's question? about 3x harder to push than the ratio it started with. and that was already about a 3-1 ratio. You'd probably end up going slower because the strain on your legs is so high.
A idéia é boa para lugares planos, se usar uma bicicleta nessa configuração em uma cidade que tenha muitas subidas, acredito que vai ter que empurrar ladeira acima.
Um outro detalhe são os pneus. Se vc não tiver um pneu apropriado para velocidades acima de 50km/h, certamente ele irá estourar, e a chance de um acidente fatal é enorme.
@ peneu so estora se tiver muito cheio mais peneu de bike goenta muita carreira e peso muito difícil explodir so se tiver usando cama de ar velha ou aro ruim ou muito remendo na cama de ar. Mais nao tem risco nenhum
You could increase the efficiency of this entire design by getting an even larger gear at the front and leaving out the second gear, while maintaining the same effective gear ratio
get into aero position , invest a skin suit , -14 degree stem with dropbar , mold carbon fiber like lotus sport 110 :))))))) nice stuff man also this remind me of the "183 mph Land Speed Record Bike" . break the world record bruh, love the ideas
Представьте нагрузку на ноги когда на горку едим 😂
2 ปีที่แล้ว +3
A chance desse pneu estourar é enorme haver um acidente fatal. Esses freios V-Brake aquecem o aro e levam ao estouro do pneu, e certamente após atingir acime de 60km/h ele começará a vibrar. Além do fato do esforço enorme durante circuitos planos e subidas.
Con buen juego de engranes se puede incrementar las rpm de la rueda trasera. La limitante es que en realidad, mientras mas rpm se obtengan en la rueda trasera por vuelta de pedales, mas esfuerzo tendra que hacer el ciclista, asi que tendria que considerar este aspecto.
@@joseluissolanohuayascachi1811 si, queda tan pesada que no podrás subir nada, te costará hasta arrancar en un lugar parejo, si es para jugar puede ser, pero no tiene utilidad en la realidad, además de que se puede lograr lo mismo en una bici con cambios
@@luisalbertomendezsilveira6607 Dale genio, si sabias que existe algo llamado ''entrenamiento'' con el puedes aumentar tus capacidades y lograr mover ese cambio ''tan pesado'' facilmente, no hay que ser un genio para eso, si te sale muy pesado y dificil subir cuestas, solo hazlo muchas veces hasta que obtengas la fuerza necesaria y luego puedas hacerlo como si nada. Que llorones que son carajo.
Great for increasing the speed your wheel turns when it's not pushing your bike (and you) along the road.... no free lunch, increased ratio equals increased torque to turn it.
It's a really neat physics demonstration, but kind of a silly way to increase your gear ratio while removing the ability to shift into easier gears. Just put on a larger front chainring and a cassette/freewheel with a smaller outboard cog. It would be SUPER cool if you could add/remove the multiplicative gear while riding, and flip from a normal bike to a bike with a MASSIVE gear ratio for descending/tailwinds.
As someone who's built dozens of e-bikes every hub motor e-bike could use this. Once a decent size motor is up to speed there's no chance you can input any power by pedaling with a normal setup.
@@Aslan-ed1gz it's not force it's speed Mr. Simple mechanics. And either way I'm telling you the average person can't apply it once a motor is fully engaged. What did you miss? How can I clarify this to you so you don't feel so ignorant? I'll break it down real simple. The average person can probably ride a bike around 20 mph at best. Once you exceed that speed limit with the motor you're no longer inputting human power. If you can't comprehend it after that I probably won't even give it another shot.
What a Great idea for future in all vehicles
De qué país eres disculpa interesante la proyecto pero en subidas se ve difícil de manejar
It's been done a long time ago with just higher gearing ratios. A bike designed for a velodrome has extremely high gearing ratios, and it's not uncommon for racers to get over 50MPH with people even being killed during events.
The high gearing ratio is very hard on your knees. I used to bike a lot when I was younger, when I got into my mid 20's, biking in the lowest gear all the time started to effect my knees. Trust me, you don't want to ride something like this once you start to loose your cartilage.
Overdrive.
We need gears in it and it will be good
@@vanshbhavsar9024 You probably don't bike a lot, but if you have a bike, try to bike in the top gear at all times.
This WILL grind your knees. What is demoed here is 10 times worse.
I used to bike a lot, and I was always in top gear unless I was climbing.
This is an interesting example of gearing ratios, but there is a reason we don't have them at this level.
Believe me, you will age and get old, and this bike destroys knees. I know 30 years is hard to imagine, but if you don't do anything incredibly stupid, you'll be here in time and be astonished you are.
Live well, and live long.
That's great for flat road, but the slightest incline he would have to walk.
That's part of the scene...no?
Agreed
Correct
yes how to make it work?
Yup,....You are right...But I like the idea...👍👍👍
Scientifically, no matter how much u increase speed by gears, it will take the same amount of effort from you to reach point B from point A.
That's because the more gears you increase the more difficult it would be for you to pedal and you will reach point B faster at the cost of getting exhausted sooner. On the other hand if u use lesser gear you will reach point B slower but this time u'll get exhausted slower as well. In both cases your exhaustion after reaching point B will be the *SAME* , that's my point......
Still if u have doubts here's some physics for you:
Let's consider the total force that you have applied on the pedal throughout the whole path be "F". Now let "T" be the total time taken to reach point "B" from point "A".
Suppose you are moving with a constant speed. Also let us suppose that your gear combo is able to make you go *"n"* times faster/slower. But time, now *"T"* is *inversely proportional* to "n" but "n" is directly proportional to the Force, *"F"* you are applying on the pedal, because you are *increasing speed at the cost of losing mechanical leverage of the pedal.*
So,
*n varies F ---(1)*
& *n varies 1/T ---(2)*
From (1) & (2) we get,
n varies F/T
Or, n = k × (F/T)
Or, *k = (n × T)/F ---(3)* [Where, "k" is proportionality constant]
Case 1: When your gear combo increases your speed.
Therefore "n" increases to "n1", "T" decreases to "T1"
so, *k = (n1 × T1)/F1 ---(4)*
[Let us assume the force be F1]
Case 2: When your gear combo decreases your speed.
Therefore "n" decreases to "n2", "T" increases to "T2"
so, *k = (n2 × T2)/F2 ---(5)*
[Let us assume the force be F2]
From (4) & (5) we get:
*(n2 × T2)/F2 = (n1 × T1)/F1*
But *n2 × T2* = *n1 × T1* = *a constant*
_[since, from (2),_
_n varies 1/T_
_or, n = constant/T_
_so, _*_n × T = constant_*_ ]_
So, *constant/F2* = *constant/F1*
Or, *F1 = F2*
*↑ This proves that the total force that you applied on the pedal throughout the journey from point A to point B is same no matter what your gear combo is.*
Additional fact (for those who still gonna point out biology stuff hoping that it can prove me wrong):
it's true that our legs are designed in such a way that it cannot change the amount of effort taken linearly with change in rpm.
But still I am saying that cycle, friction with the road, gears, and all other factors will make our leg muscles lose same amount of chemical energy at the end of the journey. Because at the end the work done by you is the same as the distance is same. The only thing you can increase or decrease is the force u apply on the pedal which can make u go faster by decreasing the time it will take or vice versa. Your cycle will take away same amount of energy from you after u reach point B. But well to make your point legit we have to consider the energy radiating out from our muscles in form of *heat* and getting wasted, to counter that heat our body produces "sweat" to keep ourselves from overheating, now yes that is something that I haven't considered because I was talking about cycling in daily life, not Olympic cycling races where they cycle for a long time at extreme speeds.
So what I'm trynna say, is that to reach a destination with the help of anything be it a vehicle, be it your own body, or be it an another living being carrying you, the work done to do the displacement is always constant no matter how fast or slow u reach that point. The result never feels the same because we waste a lot of energy due to friction, and all other stuffs. Even in a car, the energy needed for the work to be done is always a constant, if the result is not a constant then that means energy got wasted in form of heat, sound or in some cases light. So at lower gears a lot of energy gets wasted in form of heat. But even so if u minus this wasted energy from the one which was needed to reach you to your destination it will be nearly the same ("nearly" because friction causes energy loss at higher gears). U can go and ask "Veritasium" himself if u doubt my brain. I'd love to get roasted by him if I'm wrong.
I hope this ends the debate.
Actually scientifically it takes a different amount of effort because the human legs are not perfect theoretical energy sources. Human legs are most efficient in a narrow range of cadence, around 70-100 rpm. It uses less energy to do 50kph at 85rpm than it does to do 50kph at 40rpm or 140rpm. At 40rpm the force required is too high and it overloads the muscle, and at 140rpm the nerve channels become fatigued quickly and also the leg mass becomes increasingly a factor. Towards each side of the extremes of gearing, the nerves and muscles fatigue quicker, but for different reasons.
@@BC-wj8fx bravo!! right on spot
You guys are free to believe what u want.
(Also, keep scrolling down a bit to see where I have replied to a legend named @B C )
Edit: For God sake.. it takes so much to make ppl understand a simple concept.. even after that they keep fighting for proving their own opinions which is false.. -_-
I edited my comment above, HOPE it clears the doubts now. *Think rationally my pals...*
@@igxniisan6996 it is not about believing in anything but it is about science and logic
@@igxniisan6996 I think you might be confusing the amount of work (W=FD) done (which is the same no matter the gear) and the human effort which does have an optimal range to maximize performance.
Finally, someone that knows what the hell they're doing. Thank you
Clever , would be great with a tail wind or downhill :) , a bit hard on the old knees though , if you could make the pedal crank arms variable length while on the go to suit the extra torque required , that might be interesting to try .
Теперь на этом велосипеде можно ездить очень быстро, правда только с горки.
С Клипсами ?
Даже с горки будет тяжеловато
Бесполезная штука. Любая дополнительная шестерня отбирает КПД+ обычная передняя звезда ничем не хуже. Это сделано для видео в реальности не практично.
Это не для езды, это для выкручивания цифирок на подставке. У реального байкера мощи не хватит на этом тронуться)
😅 это Индия и с песней на этом велике Радж полетит к звёздам
It would be interesting to do some calculations to see what would fail first on a stiff hill: 1) rider's legs, 2) gear teeth, 3) chain, 4) gear connection point, 5) pedal crankshaft, 6) pedals, 7) something else.
I would also be interested to see a top speed without the modification using GPS and a top speed after.
No 8) accelerating from 0 mph
He should refine it. Maybe add intermediate gears or a tiny electric motor in the wheel to ease the torque. A lighter bike would help too. Cool idea anyway ☺
I built one 2 years ago. I would go like 25mph before and about 45-50mph after. But yeah any incline your done.
Не стоит забывать риск зацепиться обувью или одеждой за дополнительную звездочку.
Лично мне кажется, первее придет конец раме. Она не рассчитана на такие нагрузки, к тому же металл испорчен при сварке.
@@silverangel2719 получился обычный редуктор с повышением оборотов колеса, ничего удивительного
Yep been considering an idea like this for a set down 4 wheel bicycle and extended pedals
Подходит для ровных дорог, а вот уклоны тяжело будет преодолевать на таком. Потому и придумали системы переключения передач типа Shimano. Если нужно выжать весь скоростной потенциал, достаточно просто поставить 7- или 8-ступечатую кассету с минимальным числом зубьев на звезде 11, а ведущую звезду поставить 52. Тогда на 1 оборот педали будет приходится 4.72 оборота колеса, что вполне оптимально, в зависимости от диаметра обода.
Да не будет это работать и на ровных дорогах. Проблема разгона велосипеда далеко не в передаточных соотношениях. Ничто не помешало бы установить переднюю звезду хоть на 100 зубьев и разгоняться до сотки. Куда вы денете сопротивление воздуха и трение качения? А именно они и тормозят велосипедиста, причем их сопротивление растет тем быстрее, чем больше скорость. Так, например, при скорости 20-25 км/ч сопротивление воздуха не особо ощущается, едешь расслабленно. 30-35км/ уже тяжелее, 40 и выше- приходится "продавливать" воздух, это понятно уже по трепыхающейся одежде и жуткому ветру в ушах. Воздух на больших скоростях уже похож на жидкость в некоторой степени.
Согласен. Только по ветру. В штиль даже не поедет быстрее обычного
The principle is good, but there are lots of problems here too.
Firstly the rear freewheel he removes is probably a 16 tooth. It would be far easier to replace the rear wheel with a freehub design which would allow an 11 tooth sprocket. Similarly it's also easier to increase the chainring size at the same time.
Secondly the stresses going through the chainstay will be enormous....far more than the tubing was designed for.
However I like the concept though. To have a secondary gear would allow for incredibly high gear ratios (or low ratio too). Interesting for record attempts etc, or recumbent bike that achieve high cruising speeds.
agree the principle is good but not perfect
Don't be such a sciencetist it's cool ok
дядь , ты русский?))
It's not bad but it needs improvement.
can you make a video showing your design? i would like to see it.
На таком велосипеде можно ездить только по ровной местности и с хорошим дорожным покрытием, иначе не хватит сил для того чтобы подняться в горку.😁
Электроколесо в помощь
не обязательно. он сделал с одной дополнительной звездой, мы 17 лет назад делали с 3мя дополнительными звездами. и главная звезда была большая 84 зубца размер шатунов 145... для разгона до 25км было тяжело из-за размера шатунов и натяжения цепей... но потом все это компенсируется... был предназначен для высоких скоростей. на свободной езде развивал 88км. максимум разгоняли до 133. поставили мотор колесо в добавок ездили 155
@@user-ku8fw4oz7f пф можно без электраколеса. переднею звезду поставь на 59 зубцов и шатуны 165 и вот тебе радость. без мотор колеса.
Изменили передаточное число, молодцы. А мощность откуда брать собираются?
Ещё и потерь на трении добавили, кстати.
Ни одного кадра где он трогается с места. Наверно с горки каждый раз.
Happy for you. Good Upgrade to bikes...
बहोत बहोत ही खूब अच्छा लगा धन्यवाद जी 👍🙏🇮🇳🌷
It's been about 7yrs since I've worked around machinery as in machine repair department. At first didn't see the difference was then started to think once again. Thanks to you, no blaspheme intended, I see the light once more! Very ingenious!
please test this and let us know!!
If you knew anything about practical science and applied physics you would realize that the middle sprocket makes absolutely no difference to the final ratio between the front and rear sprockets.
@@MsMara287 I'm your first like. I'm just a simple machine repair guy, nothing more. Plain and simple, like a Amish or Minnonites simple....
Thanks for that invite of applied science, I love science, history and mathematic stuff.....
@@MsMara287 Actually, it does something:
It adds friction, making this "very ingenious" design less efficient than having the same gear ratio between merely two gears.
But yeah, anyone with a basic understanding of "applied physics" as you called it
("Technical Mechanics" would be the appopriate course in engineering studies)
would see within 2 seconds, what is really going on here
Dos detalles.
1.-. El primer plato es de 48 dientes , el segundo de 39 y vos piñones de 16. Según el ensamblado por cada vuelta de pedal, se obtiene 7.3 vueltas de rueda. Eso se puede superar con un plato de 60 dientes para bicicleta plegable junto con un piñon de 8 dientes para BMX. Es decir no Hera necesario, por otra parte hay quienes han instalado platos descomunales para tener desarrollos mucho más largos.
2.- se requiere de mucha fuerza para mover esa trasmisión. Incluso los profesionales utilizan desarrollos mucho más cortos.
Ejemplo
Contrarreloj 58-11 (5.27 vueltas de rueda por cada vuelta de pedal)
Ruta 53-11 (4.8 vueltas de rueda por cada vuelta de pedal)
Xco 38-10. (3.8 vueltas de rueda por cada vuelta de pedal)
Bmx (entre 2.4 y 3 vueltas de rueda por cada vuelta de pedal)
Estos se creen q inventaron la pólvora y si realmente sería útil lo usarían en las bicicletas de carrera, pero bueno así es TH-cam
Crack!!
Exatamente isso
Yo al tipo no lo veo haciendo tremenda fuerza para pedalear y agarrar esa velocidad al menos en el vídeo se ve relajado y no puedes poner era con h Bro 😐
@@rodripx2186 si realmente fuese eficiente se usaría en las bicicletas de competición... De hecho si sabes de física sabes q no sirve el esquema planteado
Just amazing. If some could invent something like bicycle gearing.... no wait we already have that for decades
The perfect how to.
Short and to the point
No pointless music or voice-overs
I heard some pointless music lol
@@geodude7116 me too.
Great you've discovered gears.... Can achieve similar ratio by enlarging front chainring/smaller rear freewheel with less parts & friction.
С такой передачей даже с места не тронется 😁
А с горки и сам разгонется
У многоскоростного на высокой передаче крутить трудно и чувствуется сопротивление ветра. На более повышенной просто сил не хватит. Хуею с таких видео ради проммотров
Даже если тронется,то по прямой его хватит максимум на 1 км, ибо ногам кранты 🤣🤣🤣
@@user-iq6mj6mw4w ну да😁
Я вот тоже об этом подумал, что хрен стронется, потом ноги отвалятся, а следом за ногами и педали...
@@user-ib7fi1bd2v 😁👍
Good luck getting the thing to even get started let alone any kind of stride
Идея спорная!Есть за и против!Интересно прокатиться!Обсуждать интересно ,но всегда интересно попробовать!
Es verdad que incrementa la velocidad , pero la fuerza que se debe generar en las piernas es mucho mayor.
You need good breaks too. Thanks for showing this design.
you should show the amount of force needed to ride the bike before and after or set it on a stationary bike frame and test the resistance and show yourself stopping since you removed the coaster brake
Ngori manze. Fantastic stuff. Will definitely give it a try.
It's really hard to pedal though, reverse the gears ⚙️ so we can have torque but not speed we can't get both isn't it Haha... Well made man really awesome 👍
Good idea 💡
I like it.
You might be able to add a stack of shifting gears atop the orange gear that you could use to shift to a better ratio on hills. I don't see anywhere else conventional bike parts would work. (Edit nevermind look at the clearance, I think this one stays 1 speed)
You could just use a shifter with some sensible ratios. 3 gears in the rear is enough to drive up a hill and drive faster on flat ground than you will ever want to on a bike like that.
That would be a great setup for a time trial bike.
In essence you've constructed a heavier, odd-looking overdrive gearing, very much like what internal bike hubs have. Of course the overdrive ratio is 2.43 : 1 , unlike an internal 3 gear hub which gives you 1,33 : 1 on the "normal" chainring/sprocket ratio
😀👍
Of course
But it would require high torque compare to normal cycle, it might cause pain in knees.
Definitely cause knee pain, just a matter of time
If you're not properly seated or fitted on your bike...it will definitely cause some knee pain
Et oui, il n' y a pas de miracle ! Si tu es jeune et vigoureux et ta route est plate comme dans la vidéo c est ok !
@@n00bm4str69 its not about ergonomics. Its because of gear ratio
8⁷
I like how he chose a a busy road as his test ground.
and drove in reverse.
Great setup. Maybe think about gearing the primary drive.
Thank you for continuing to share good ideas./Salamat sa patuloy na pagbabahagi ng magagandang ideya.
Excellent ! Thank you for showing us and sharing a very smart video 👍
Boka choda video ea you have to read Physics man 😅😅😅😅
Would it be difficult to change/ fix the chain should you have to?
That's awesome. Riding on the highway going against traffic 😂
the manafacturers make a 6 to 12 speed sprocket for better purpose for clim flat and down portion of riding,
but u make a gear for only flat and downhill,
Maravilhoso projeto .Parabéns.
Now you need that monster legs for this gearing:-)
I need to look into this for my motorized bike
As long as you can get someone to push start you, it's good. And all fine until the weld on the middle sprocket fails when you're at full gas.
You have to be strong as a beast to power that top speed. Higher gears have higher top end but it divides your torque to overcome the tendency to remain still.
It requires more strength, yeah. My image is that high gears trade strength for speed. Personally, I use my bodyweight to drive high gears.
You should make a businee out of this concept!
Increase the strength you need to get going as well.
You will never hate braking at a red light so much as when you drive with this thing on.
Two details.
one.-. The first chainring has 48 teeth, the second has 39 and your sprockets have 16. According to the assembly, for each revolution of the pedal, 7.3 revolutions of the wheel are obtained. That can be overcome with a 60 tooth folding bike chainring paired with an 8 tooth BMX sprocket. That is to say, Hera is not necessary, on the other hand there are those who have installed huge turntables to have much longer developments.
2.- A lot of force is required to move that transmission. Even professionals use much shorter developments.
Example
Time trial 58-11 (5.27 wheel revolutions per pedal revolution)
Route 53-11 (4.8 wheel revolutions per pedal revolution)
Xco 38-10. (3.8 wheel revolutions per pedal revolution)
Bmx (between 2.4 and 3 revolutions of the wheel for each revolution of the pedal
Si vas a usar google translate por favor arregla primero los errores del original... porque la esposa de Zeus no tiene nada que ver XD jajaja y "force" está mal en el contexto. Y me reí con "Turntables" jajaja
what a clown
You didn't create it 🤦🤦🤦
Use electric motor for initial torque.
@@naveshsingh1922 agree
Never ceases to amaze me that someone learned to weld without ever having learned to think.
Yeah, but it got him over 3 million views in 3 weeks. He's laughing all the way to the bank
@@zaptainkuboom5520 Yeah, the views, but he still can't think.
@@krzysztofneubauer2390 5.2 million views in 4 weeks, peddling and laughing all the way to the bank
@@zaptainkuboom5520 you are repeating yourself
carve a quote in granite
Good luck trying to bike in Norway🎉
Great idea congratulations
Gostei parabéns pela produção do vídeo 👏🏼 👏🏾👏🏾👏🏾👏🏾👍🏽
This actually has logic to it!
You should make a business out of this concept
Super nice. Super excited powerful.
Se ve interesantes, pero cual es la relacion de vueltas, el arranque y en subidas ya que a meno diametro del engrane de salida, mayor esfuerzo.
Great idea for flat surfaces, but seems like it would be a pain on hills.
this will destroy his knees even on flat surfaces.
Beautiful work..
Well done, you’ve discovered gears
One will have difficulty to paddle on up hills , a powerful motor , can solve the problem. 👍👍
Projeto incrível, adoraria experimentar. Tem que ter muita perna pra explorar o máximo desse sistema. Deve ser incrível passar de 40km/h e ainda ter relação pra ir muito mais além. Parabéns.
Como curiosidade, vale. Se você mora em lugar plano, e se tem perna pra embalar, pode até ter algum uso (mas haja perna). Agora, se pegar vento contra, subida ou se tiver muito semáforo no caminho... 🤣
@@alessandropinto5204 kkkkkkkkk verdade, mas treino é treino, né? kkkkkkk simbora pedalar
@@jeffersonallan4903 olha, depois de muitos anos de encarar subidas brutas, meus joelhos já não querem mais saber disso não. A métrica agora não é watts, é sorrisos por km 😁
?Y cuantas veces se incrementan las probabilidades de matarte. ?
53/39 na frente e um cassete 11/25ou mais ,faz isso usava essa relação em bike com aro 26 com rodas leves e pneu 1.0 ainda vou repetir esse projeto novamente recomendo pois já tive
Make a hybrid boke by dding a geared electrical motor to help you with the needed start torque, especially in hills. You may even turn off the motor once you reached the high speed and the motor becomes a dc generator that charges the vattery
Гениально! Теперь любой желающий сможет стать чемпионом мира по велоспорту! )))))))))))))))))))
Я бы посмотрел как он поедет против легкого ветра или в горку
@@user-wz7pm1bh3s ага. И как он трогается с места 🙂
Ну комметы то вообще супер. Такие же идиоты как и он походу
@@user-kc5ix9le6h Думаю его толкают, чтобы тронутся. Видемо к этому велосипеду нужно возить с собой еще 2 друга, чтобы толкали на старте.
You can also increase your speed with less effort by switching the surface that you're traveling on from an incline to a decline.
No shit 🤯
@@Gr8_Z28 Kevin is a keen observer of the obvious.
Oh! It seems we have Sir Sherlock Holmes here...
@@russelbiffs3683 Sounded like irony to me...
Umma make a video of that
hope that there will be a part 2.. for you to continue working on the modyfi and additional gear..ofcoz for the hilly and uphill road.. . you are the one who works on it..I bet you can do it sir..👍🙂
The next part will be about modifying the legs, so they can manage to provide the torque through such a high ratio. Anyone who's ridden a multi-gear bike understands that.
@@James_Knott like adding the second legs for the middle primary ..then just change leg into high ratio ...
@@AL_Azd Or just invest in a derailleur gear shift. It does what this design does, but much better in any way and it also does more
There has to be a way to mount a pulley system in front and above the front wheel so you can pull yourself up hill.
Top 😃não ligue pros comentários que falam de subidas sua ideia é pra linha reta, sucesso 😄
Se der pra colocar marcha fica mais top ainda kkkkk
@@walberlymagno5114 vdd kskksk
Isso é uma ideia genial, fica leve devido o efeito alavanca
If only somewhere you could buy a bike with gears...
What would you call this type of sprocket? I want to add one to my microhydro generator and am looking for parts.
Great Idea 💡
Great idea if we all had bionic legs to be able to push the pedals round! How much torque would be required at medium speed to maintain thrust?
Well it is a good exercise for legs
@@masterbaiter338 uh, not so much. there comes a point where it's harder on the knees than it's worth. And to answer Crusader's question? about 3x harder to push than the ratio it started with. and that was already about a 3-1 ratio. You'd probably end up going slower because the strain on your legs is so high.
Good point
@@DFX2KX yup that disk is quiet large can create a huge muscle cramp 😅😅
@Jesus has given you all. Repent or die. no one asked.
Isso é física na prática! 👏👏👏😉👍
O foda é subida né véi mmkkk
Great for hills! :D
I knew it was possible. "They called me a mad man".
Thanks for sharing 🥰🥰
Big like 👍👍👍
A idéia é boa para lugares planos, se usar uma bicicleta nessa configuração em uma cidade que tenha muitas subidas, acredito que vai ter que empurrar ladeira acima.
Eu acho também
Exatamente
Com certeza
Um outro detalhe são os pneus. Se vc não tiver um pneu apropriado para velocidades acima de 50km/h, certamente ele irá estourar, e a chance de um acidente fatal é enorme.
@ peneu so estora se tiver muito cheio mais peneu de bike goenta muita carreira e peso muito difícil explodir so se tiver usando cama de ar velha ou aro ruim ou muito remendo na cama de ar. Mais nao tem risco nenhum
You could increase the efficiency of this entire design by getting an even larger gear at the front
and leaving out the second gear, while maintaining the same effective gear ratio
It just works great KEEP UP GREAT WORK 🇺🇸👍
Well I think if this mechanism is combined with cassette gear system, will work wonderfully.
get into aero position , invest a skin suit , -14 degree stem with dropbar , mold carbon fiber like lotus sport 110 :))))))) nice stuff man also this remind me of the "183 mph Land Speed Record Bike" . break the world record bruh, love the ideas
Представьте нагрузку на ноги когда на горку едим 😂
A chance desse pneu estourar é enorme haver um acidente fatal. Esses freios V-Brake aquecem o aro e levam ao estouro do pneu, e certamente após atingir acime de 60km/h ele começará a vibrar. Além do fato do esforço enorme durante circuitos planos e subidas.
yes , but the start will be very difficult unfortunately
Not really. Just get a running start, then hop on the bike and pedal like you're being chased by a SCREAMING BANSHEE
No. Problem
I think tork will be very less and very hard to drive
Going uphill would be impossible
@@toulee8051 gg.z
Great idea👍
cool, love it. I also have my own channel
Con buen juego de engranes se puede incrementar las rpm de la rueda trasera. La limitante es que en realidad, mientras mas rpm se obtengan en la rueda trasera por vuelta de pedales, mas esfuerzo tendra que hacer el ciclista, asi que tendria que considerar este aspecto.
Hola y en las subidas sería muy dura al pedalear ?? Estoy inciando en este mundo del ciclismo , gracias.
@@joseluissolanohuayascachi1811 very
Es un mugrero eso. Para eso existen las bicicletas con múltiples sprocks. Jejeje. Lo sabías?
@@joseluissolanohuayascachi1811 si, queda tan pesada que no podrás subir nada, te costará hasta arrancar en un lugar parejo, si es para jugar puede ser, pero no tiene utilidad en la realidad, además de que se puede lograr lo mismo en una bici con cambios
@@luisalbertomendezsilveira6607 Dale genio, si sabias que existe algo llamado ''entrenamiento'' con el puedes aumentar tus capacidades y lograr mover ese cambio ''tan pesado'' facilmente, no hay que ser un genio para eso, si te sale muy pesado y dificil subir cuestas, solo hazlo muchas veces hasta que obtengas la fuerza necesaria y luego puedas hacerlo como si nada. Que llorones que son carajo.
Parabéns!!! Ficou ótimo 👏🇧🇷
Eu ser Brazil
*Wonderful idea*
Good job bro
I think the pedals are very heavy .It must be very difficult to start the bike..
Excelente trabalho e idéia.👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏👏
Great for increasing the speed your wheel turns when it's not pushing your bike (and you) along the road.... no free lunch, increased ratio equals increased torque to turn it.
Super 👍
Depois, favor coloquem o tradutor: Como foi o teste na subida acentuada de uma rua? Parece que esta solução é viável em ruas planas.
É viável em qualquer lugar cara, é uma forma de ficar leve, é tipo polia ou alavanca
I bet he had fun coming up with the idea and building it. Regardless of what the long winded windbags have to say about it.👍
Basically a jackshaft system pretty cool
Nice nice galing mo sa math kuya..kitang kita.. hahaha!!
...
Acredito que seja funcional em local plano, no litoral, pois em subidas vai ficar difícil o pedal; de qquer forma achei muito legal mesmo!! 😎
É muito pesado pra subir, provavelmente empenaria a coroa ou quebraria a solda.
Só plano e descida
Mas difícil até para arrancar .... No vídeo só mostra ele já embalado ...
Quero ver chegar a 80km/h
Se ele colocasse coroa e pinhão intermediário com vários diâmetros, poderia trocar de marcha e ao chegar em uma subida, deixar leve...
Centrifugal clutch on a flywheel
It's a really neat physics demonstration, but kind of a silly way to increase your gear ratio while removing the ability to shift into easier gears. Just put on a larger front chainring and a cassette/freewheel with a smaller outboard cog.
It would be SUPER cool if you could add/remove the multiplicative gear while riding, and flip from a normal bike to a bike with a MASSIVE gear ratio for descending/tailwinds.
exactly what I thought
We got a few decades. Who knows?
very nice 👌👌👌👌
😅😅😅 In childhood I had same idea in my brain.
As someone who's built dozens of e-bikes every hub motor e-bike could use this. Once a decent size motor is up to speed there's no chance you can input any power by pedaling with a normal setup.
Yes but you need to add more force to the pedal.
Simple mechanics
@@Aslan-ed1gz it's not force it's speed Mr. Simple mechanics. And either way I'm telling you the average person can't apply it once a motor is fully engaged. What did you miss? How can I clarify this to you so you don't feel so ignorant?
I'll break it down real simple. The average person can probably ride a bike around 20 mph at best. Once you exceed that speed limit with the motor you're no longer inputting human power. If you can't comprehend it after that I probably won't even give it another shot.
Ela é rápida mas o esforço para pedalar é enorme.
Concordo