Insane Chainless Bicycle Prototype

[@TheQ_original]

Go to bit.ly/TheQCleanMyMac to get CleanMyMac X

[@Username-u5e]

Hacksmith industries want to know your location

[@Kamal_AL-Hinai]

I wish you'd put your final thoughts since you tried it. Better or worse then a chain etc.

[@arigatou_lim]

👍👍👍👍👍👍👍

[@szreg6425]

What spray paint company do you use?

[@insubordinate_i]

заебешься крутить педали 🥱😂

[@uthermaceanruig5098]

Congratulations on the rediscovery of ancient bicycle technology.

[@vickanid1862]

Exactly what I was thinking. Chains were popular since you can have multiple gears to handle a variety of road conditions.

[@williamoftexas1489]

Funny you consider 150 yrs ago as 'ancient'.

[@djt6fan]

@@williamoftexas1489 its a figure of speech

[@dmasrc18b]

@@williamoftexas1489 congratulations on discovering figure of speech 🤣

[@sterogerson4177]

@@dmasrc18b be kind he might be figuring out what that means 😂

[@terrificfrogg8377]

Pretty cool but it actually shows how efficient the chain mechanism is

[@tom4208]

can easily be fixed with just different gear ratios... chains work the same way the sprocket is the gearing basically

[@terrificfrogg8377]

@@tom4208 but this looks like it will require a lot more maintenance due to its rigid nature. A chain is flexible, its able to take a lot more shock

[@Will80085]

​@@terrificfrogg8377Shaft driven motorcycles require much less maintenance than chain driven, that's one of their biggest advantages.

[@stepanpetrenko357]

​@@Will80085на цьому переваги закінчуються

[@Moneyybro]

​@@Will80085motorcycles riding on big speeds, not like average bike

[@pd4689]

I've seen this idea before. Problems are 1) gear ratio, you're confined to one, 2) the actual contact point and transmission of power is confined to a single tooth at a time thereby putting extreme force onto a small point, 3) the drive shaft roller bearings are pretty small and likely to fail quickly, 4) the drive shaft is thin and subject to distortion.

[@justtruth8281]

Ware are the breaks ?? Also

[@7days306]

5) - конструкции необходим кожух, иначе от грязи и пыли значительно уменьшится срок службы шестерней

[@Jeaum]

Its a prototype

[@jeffmullinix7916]

Human power = .03 of one HP . Then you add your total weight what ever that would be . If that soild 3/4 inch shaft is harden steel then no problem . The bearings have no problems eather . Becuase the shaft would be vary little pressure on them . Helicopters uses the same system for the tail rotor and those shaft are of aluminum tube .

[@hemusbull]

Very well engineering explanation. Thanks.

[@brianbenson2446]

Finally! They've made a bike that you have to pedal twice as much to go half as far!

[@geertcautereels]

The fitness clubs rent them out. Great workout and not to far from home.

[@Artists33]

Just a prototype😊

[@PatrickBaele]

Exactly my thought

[@armandoalvarado5840]

🤓🤓

[@nighttskies]

this is a global site ma'am​@@geertcautereels

[@Trutko.Dmitry]

Такие системы были опробованы ранее. Очень много недостатков. 1. Слишком большой вес. 2. Быстрый износ зубчатых колёс. 3. Необходимо дополнииельно создать систему свободного хода. 4. Ухудшение регулировки колёс. Плюс десяток других недостатков.

[@dzetta369]

Система свободного хода уже встроена.

[@KlimChugunkin888]

КПД не ахти ещё.Пункт 2. Можно подобрать материал и грамотно его обработать.но и цена этому есть(если это будет сделано специалистами)." Улучшенные зубчатые колеса изготовляют обычно из качественных углеродистых сталей 35, 40, 45, 50, 50Г и легированных сталей 35Х, 40Х, 40ХН и др. Нормализованные зубчатые колеса небольших размеров выполняют из углеродистой стали обыкновенного качества Ст5, Ст6 и качественных углеродистых сталей 35, 40, 45 и 50, а больших размеров - из углеродистого стального литья 35Л, 40Л, 45Л, 50Л, а также из марганцовистого н низколегированного стального литья различных марок. Для повышения контактной прочности зубьев и соответственно нагрузочной способности зубчатых передач применяют стальные зубчатые колеса твердостью НВ>350. С увеличением твердости рабочей поверхности зубьев возрастают также износостойкость и сопротивление заеданию зубьев. Однако зубья с большой твердостью рабочей поверхности плохо прирабатываются и нуждаются в высокой точности изготовления. Кроме того, их механическая обработка затруднена, для облегчения ее эти зубья нарезают до термической обработки. Так как некоторые виды термообработки вызывают коробление зубьев, то для исправления формы зубьев применяют отделочные операции: шлифовку, притирку, обкатку и т. п"(с)

[@Maksim19982]

Да и ремонтопригодность подобного добра такая себе.

[@АзаматБектуров-н6п]

Как по мне зае***ся педали крутить

[@DYECPRO]

Согласен. Но круто. Самый жирный минус это скорость. На нем по дороге и по горам не поездишь

[@anujkumarsahu5371]

This man took "We are evolving, just backwards" to next level

[@mareksykora779]

This man solved the problem of dirty chain very simple way.

[@unclsam6798]

@@mareksykora779 Shaft driven is old technology, chain came later. Shaft driven cycles were ruled out due to high loss of energy during transmission.

[@mareksykora779]

@@unclsam6798 Again for you: It solves the problem of always dirty, lubricated chain. Can you understand the sentence?

[@mareksykora779]

​@Sky NinjaHave you ever ridden a bike, dude? Your pants will get dirty from the lubricated chain in the middle of the chain. Here, the middle part of the shaft is hidden inside the frame.

[@mareksykora779]

@Sky Ninja Its about city bike, not mountain bike. Find yourself Brikbikes channel. They produce bikes with shaft instead of chain.

[@owendamon734]

I love how this “prototype” has been around since the late 1800’s

[@Octopussyist]

And was soon abandoned.

[@Tokopilbiru]

Hahaha we going backwards!!

[@christophergilley3218]

Can't make up something new do a reboot. Lol

[@theh0r5e90]

if I recall it was also patented by Iver Johnson a typewriter machine company

[@roadtripper8493]

The great great grandma of the prototype 😁

[@bellavia5]

This was invented 100 years ago. One was found in a barn on American Pickers.

[@jamesconroy7030]

My father had one a long time ago. It also had a telescopic spring loaded suspension seatpost.

[@bellavia5]

@@jamesconroy7030 Interesting.

[@AKSaleh.Official]

This's cool DIY video, but shaft-driven bicycles are already there for more than 100 years, since 1890. Actually, chain-driven are considered a vast improvement over shaft-driven bicycles with better performance, efficiency, and ease of maintenance.

[@SuperSohaizai]

I don't think it has better efficiency as chain has efficiency of up to 98% if I remember correctly. The other 2 I'm not so sure, can't remember the details. I believe what you are thinking of is belt driven bicycle, not shaft driven bicycle. Cool tech is still cool though, so I'm not gonna judge

[@workshopninjathe1st]

There are public bike rental schemes in Portland OR using shaft drive bikes using 3 speed shimano hubs

[@firesurfer]

@@SuperSohaizai That's the same as what he said. Reread his comment. The chain is more efficient.

[@SuperSohaizai]

@@firesurfer oh kay.... I actually misread it until you pointed it out... Thanks, and my bad!

[@firesurfer]

@@SuperSohaizai I figured that when he wrote: " shaft-driven bicycles with better performance, efficiency". Without the context of the entire sentence, it can easily be misread.

[@pradeeppanchal4485]

You can't Stop paddle when it's move freely , I mean there a very important role of one way bearing which is missing in this case

[@gurjotsingh8185]

👍👍❤️

[@tejasshinde56]

We can have foot rest for this purpose

[@sage_of_the_six_paths]

Yea u are right man

[@demenphieuluuky5892]

But you can stop by paddle without brake like Fixed Gear Bike.

[@cyber-backpacker]

Rear axle has ratchet system...he can stop pedal even when it is moving...am I wrong...?

[@motarted1735]

The sleek look is definitely top notch. The major disadvantage is friction loss which will be much higher than a conventional chain.

[@Приколы888]

To do this, you need to lubricate the mechanism, I had an electric saw where the same mechanism was used, I forgot to lubricate it and as a result, after a week, the links were erased.

[@GregZentTrumpetMan]

Yeah, no bearings or grease in that tube, so good luck.

[@thomas316]

I cant speak for bicycles but in motorcycles a new chain is more efficient than bevel gears but actually research shows that chains lose efficiency rapidly as they wear. On a bicycle I guess that's less of a consideration. That's one reason you've seen more motorcycles move toward using belts and gears in recent years, along with lower maintenance. Obviously with a bicycle gearing is a substantial consideration that favours chains. 👍

[@isakramngaihzuala4894]

And another is that he can't rest his foot as the wheel rotates with the rotation of the pedal,unlike the chain system

[@timvandriel4568]

There are many more disadvantages to this. When you put a lot of force on the pedals, the smaller gear will be pushed out, away from the other gear with great force. In the way he currently welded the tube, the connecting plate will just bend open, losing any contact between the teeth. It's also much more difficult to do gear shifts, more likely to get something like a long dress or a coat being pulled into the gears, and probably a lot more.

[@merix2741]

This reminds me of those ideas I had when I was a kid and how genius it was. Only to discover someone already made it years ago. This gives me same vibe.

[@SamuTheFrog]

Except these people have zero self-awareness & put an insane amount of effort into a fully scripted and edited video about it that probably took them a week or so to create... instead of taking less than 1 minute to google it first. Lmao Even had the audacity to call it a new idea & a prototype.

[@ThomasMarxJKD]

You just need a higher gear.

[@danielf3623]

And some way to keep your shins when going downhill.

[@esh92]

or just use an internally geared hub...

[@freewaycola5415]

@@esh92 or just use a chain

[@jerzygadzinowski9138]

@@freewaycola5415 hahah +1 chain is much better

[@RonitSingh17]

Make my way to 1000 please 🙏🏻 🥺 It's a kind request Please 🥺.

[@earlyxplorerstudios8592]

It is basically equal to the lowest pressure gear on any bicycle. You're gonna have to paddle a lot just to move a few feet. I'm not exactly sure if I'm gonna recommend it....

[@exobjm5890]

I know

[@jbduchene]

Just need to use a Nexus hub with integrated gears...

[@earlyxplorerstudios8592]

@@jbduchene *which he didn't, hence my point.

[@deepaksahu3685]

Correct

[@andrasolivier7185]

@@earlyxplorerstudios8592 Still doesnt help anything. The loss is sooooo high here. If he used faster gearing, he can hardly make it move...

[@darthvail]

The major issue with his sprocket build is that he was to pedal extremely fast for minimal energy transfer. In other words his system is far less effective than a traditional chain gear system

[@Calypso993]

There's plenty of room for improvement.

[@samuelmatheson9655]

@@Calypso993 need a phat gearbox or one made of exotic materials to get more efficient pedaling

[@carldoomsday3975]

Rohloff 14speed internal drive hub.

[@kc4415]

Also the fact you cannot stop pedaling without the bike stopping, or more likely destroying the sprockets

[@opinanlosjovenesrd3477]

@@Calypso993 Exactly what I was going to say. It can be improved.

[@doronron7323]

Nothing like re-inventing the wheel. A pal of mine has an 1898 Belgian FN, which I've ridden. Nothing new here, but I admire your hack it and weld outlook.

[@retweaksatapathy106]

The gear ratio being the same for peddal and wheel would require lot more peddling to travel the same distance but this idea was awesome.

[@Nikhilsingh-bf2cr]

Yes if we increase the size of gear then it will be more awesome.

[@kashmir-se-kanyakumari3574]

@@Nikhilsingh-bf2cr worse is that you can't have any gear shift options

[@Nikhilsingh-bf2cr]

@@kashmir-se-kanyakumari3574 hmm you are right but in this type of cycle gear swift option is difficult.

[@matsv201]

@@kashmir-se-kanyakumari3574 you can if there is a central gear system. They are really mot that uncommon. Can probobally by them of ali for $10

[@fecalmatter4195]

@@kashmir-se-kanyakumari3574 you could change the ratios or even add a gear but you would increase weight.

[@jareddahlseid551]

Looks like perfect gearing for those who had to ride to school uphill both ways!

[@rsc68er]

Peddle 50 times, move 2 meters

[@imteraz]

Hahaha 😂

[@danii8168]

BMX for the win, that is if your chain isn’t holding onto dear life

[@alal2192]

Uphill is probably very bad loool

[@Drum1965]

You forgot in the snow too!

[@black53342]

The Q: Rides a bicycle. The bicycle: My time has come.

[@Mister_A03]

did you just call him fat?

[@kanon0n]

@@Mister_A03 da.

[@RonitSingh17]

Make my way to 1000 please 🙏🏻 🥺 It's a kind request Please 🥺 😢

[@kanon0n]

@@RonitSingh17 nyet

[@janzenbrixp.crisostomo9874]

@@Mister_A03 no

[@srinivassiddarth]

I think you need to use larger diameter gear wheels, so you can spin your legs less number of times. Try it . Great concept. You created history there.🙏🙏🙏

[@erebus1964]

I would say ... he re-applied history there ... even though I admire his approach to do it DIY ... it's been nothing new.

[@darkzero4608]

Yes correct. He has to peddle fast to cover small distance.

[@ompatel5226]

I think this mechanism is more suitable for ev

[@srinivassiddarth]

@@ompatel5226 how?

[@ompatel5226]

@@srinivassiddarth he could use different transmission ratio and then use another gear at rear with motor

[@williamstidham9526]

I have a new bicycle from 1983 that has front wheel drive with this setup and also has a cost gear where it lets it go fast down hills and not eat the gears out while peddling with chain on back, 10 speed I think. Bought it from the man who put it together in 1983 and still has tips on the tires. Bought it because it was different, No one ever ask to ride it so it just hangs around

[@007nth]

Any video,we want to see.

[@dewmontain123]

Do a video on it. Even if its like 1 minute

[@williamstidham9526]

Yes, man had a bicycle shop and in 1982 they made these and the gear would eat out going down hills, 1983 they put a inline slip to fix that, Shop owner took this one out of box and hung it up in store till I bought it 10 years ago. Has the old new tires on it, looks like any bicycle 10 20 speeds, has a cable from center pedal up along the frame to curve down to front wheel and chain drive on back, I bought it because it was different, dark green paint with plastic gear where this one is steel

[@williamstidham9526]

BWA 2 wheel bicycle, on KZbin, not mine but would work the same way, made for ridding in sand

[@51-FS]

Can I ride it?

[@robbymidgett3797]

Very cool. I like the thought. One difference I’d probably make is to find a larger diameter bevel gear for the pedal shaft. Seems like it requires a lot of pedal work for a little amount of output at the moment.

[@thatsclassified1]

That and maybe a housing for the gears so things can't get damaged and I don't know if you would have to lube it often

[@TarDaniel]

This was for demonstration purposes only. The rest is obvious 😎

[@fitwithsurya]

Same question but i think its for demo only

[@coolmendotdot2]

At least a lot of torque for uphill driving

[@andrecrosby466]

I wanna see it going uphill

[@Johny40Se7en]

Lovely design, and it's quite therapeutic seeing the stages of the build. It's no doubt less efficient than a chain though. I think having a one drive set up like that would suit an E bike more connected to a tidy throttle.

[@jamesofallthings3684]

No it's a braindead design.

[@JMC-gy6ss]

Nice job! It is a work of art. The reason they don't make bikes like this is that steel is stronger in the pulling direction that the twisting direction. The shaft will always be at least as heavy as the chain. Also bevel gears are less efficient than roller chain, and tend to slip more.

[@bottomline99]

you just made that up, stop talking shit. try a more factual approach next time. for example, this can not change gears... the pedals can not freewheel... etc

[@WyreForestBiker]

@@bottomline99 you could easily add a freewheel to a shaft drive set up ..

[@patricialorentzen4874]

@@bottomline99 Actually, bevel gears (or any gears) are less efficient because there's a change of direction - twice in this case. Any force vector reqiures energy that ultimately is not delivered to the wheel. Where that's also true of a chain, the angular deviation is minimal by comparison, and is mediated by the difference in sprocket size (proportional to the gear ratio). So "made up" or not, the assertion is correct. Also, tensile strength may be greater than yield strength, it depends on the material. However, this is unlikely to matter as the forces required to either twist or pull a 5/8" steel shaft to the point of damage are unlikely to be achieved in this application. That said, I agree that the two major omissions are disengaging the pedal (freewheeling), and providing multiple gear ratios. All-in-all, a chain drive using a modern derailleur to achieve a nearly linear transfer of force while providing a wide range of input-to-output ratios is hard to beat.

[@bottomline99]

@ Patricia Lorentzen In my opinion the lower efficiency of bevel gears a simple matter of friction, which increases at 90 degrees with the inherent increased surface slipping that results (Agree with JMC on that). Respectfully disagree about the vector statement, eg a long belt drive that twists 90 degrees is virtually as efficient as if it didn’t. It was ‘The reason they don't make bikes like this is that steel is stronger in the pulling direction that the twisting direction’ that inspired my comment. That is not the reason, it urkes me when people just make shit up and preach it like fact! My thoughts and guess would be, for the same torque transmission, the chain style spreads load over a larger diameter cog and many teeth, the bevel gears are a smaller radius with only one or two teeth in contact, which undoubtedly results in much higher stresses, requiring higher quality materials, hardened surfaces, shimmed exactly to avoid wear, enclosed with oil (and seals) to achieve low friction, a variable gear ratio wheel hub drive. imagine its actually pretty good system performance wise however simply more heavier, complex, costly to make and maintain compared to the ole cheap and effective chain drive that won.

[@rxonmymind8362]

Nerd. 🤣👍

[@joebaker2311]

People can say what they want about efficiency vs chain drive but you can't deny the craftsmanship. Great video

[@waynecampbell9714]

That's like saying I put lipstick on a pig and she's absolutely beautiful even though she's a pig she's still beautiful dude the fact of the matter is it's still a pig

[@jckdnls9292]

It's standard craftsmanship.. Nothing special about it

[@Djekill]

Мастерство на самом низком уровне

[@KamakNeApiMalimawata]

we can't deny how much he makes using this video, I guess at least $ 40000

[@psychlyeslg]

​@@jckdnls9292Crafted a video with 40 mil views and counting.

[@eshvvn]

'The Q' in 2030 : "Tireless Bicycle prototype"

[@h05k43]

he already made tireless bikes...

[@syahidanhassan9238]

He already did it

[@gabrielharamustek1283]

U forgot the "insane!!".. and he already did it

[@abd-ur-rahmanhussain5877]

He might decide to make the entire bike invisible!

[@nikhileshk7047]

I think you mean "wheel-less"

[@vikasshelke5544]

I never experience chain breaks . Chains are by far more efficient in power transfer than shafts

[@wicked9299]

No even in cars they use shaft to maximize the power in bike they use chain becoz bike is more efficient in fule economy to reduce the cost of shaft and it is also less maintenance I know your indian science student becoz iam also indian 🤣🤣 mai ne bahut Indians ko deka he har video ke niche uska science dalte baite he 🤣

[@ayman4540]

@@wicked9299 car mein shaft use hota hai because it needs more torque as it is carrying lot more weight compared to bikes. Also the inner and outer wheel needs to rotate at different speeds while turning this is difficult to achieve with chain drive.

[@wicked9299]

@@ayman4540 there is no need for different speed of rear tires while turning the front wheel needs to be at different angles and speed

[@ayman4540]

@@wicked9299 go read about car differential you will understand why rear wheels need to rotate at different speeds

[@keithbranch7718]

N no gears

[@enderlord5412]

Drive shaft bicycles aren't a new concept, their main drawback is that their fixed gear so you can't adjust power ratio and you can't back pedal. But props to you for building your own system 👍

[@Keterius]

I heard some company's trying to make an automatic transmission for it tho

[@bobmorane2082]

What’s the point of backpedaling tho I rather use it for a hard brake like in a 1 speed city bike

[@Keterius]

@@bobmorane2082 different speed acceleration and efficiency

[@enderlord5412]

@@bobmorane2082 for those who aren't used to it it can be a detriment, also breaking isn't very easy on fixed gear bikes, I'd say their for experienced riders only

[@manilanoakes3966]

I don't think it is mechanically efficient as a chain and sprocket.

[@mssmmgnn]

Smart, as idea... but it has mainly two defects: - the hub of the pedals is blocked, it always turns. - only one transmission ratio is possible (and, in this case, too short). Anyway, again... nice idea, nicely performed; mostly for the cheap (using parts of old drills) and quick (entirely handmade) kind of solution.

[@rafflesiadeathcscent3507]

Not his idea, this is already an existing idea from 1900s

[@JohnNy-ni9np]

Yeh, it needs to have a clutch and a gearbox.

[@johnnyregs2378]

Those are the same two issues any fixed gear bike would have and they're still hugely popular. The biggest issue here is just ease of maintenance. Too easy to switch out a chain or cog or chainring compared to this. Shaft drives have been around longer than chain drives, bmw motorcycles and some others still use them. Shafts on a bicycle are only about 75% efficient where as chains are closer to 95% which is another issue.

[@sskamble6758]

Let's call a bug as a feature, you can reverse a bicycle now

[@andrasolivier7185]

@@JohnNy-ni9np Then add a motor too otherwise u die trying to make this shit move...

[@JKidding-m3h]

It's great until the torque twists the metal putting it out of alignment. You can change a chain, you can't fix the frame.

[@s_wozzzie]

Wow look now we’re pedaling twice as hard for what a chain can do in one pedal 😱 10/10

[@M.F.Hafizhan]

It's like mocking chains because you saw someone who's running a 22/52t spinning out once

[@joel7227]

You're assuming the chain is what creates the power ratio's, where it's actually the gears. You could have an equally powerful push with an appropriate sized gear. Hence why geared bikes have different sized cogs, not chains.

[@rcnelson]

Chains are messy, relatively short-lived, and wallow in road grunge. Driveshafts (as motorcyclists well know) are neater and require almost no maintenance. The drawbacks of shafts for both motorbike and bike are initial cost, more weight, and less efficiency than a chain. I think the trade-off is often worth it.

[@s_wozzzie]

@@rcnelson the friction loss must be crazy but true tbh, chain suck sometimes especially when they come off and you have to stop and put them back in, but ill keep my chains your opinion is valid though

[@s_wozzzie]

@@joel7227 that actually makes alot more sense ngl

[@officialjohnrokz2]

The power loss from the pedals to the rear wheel is insane.

[@islamisthetruewaytogod6812]

Maybe he can improve it in the future

this is actually is like truck on 1st gear. So you need to pedal more for to go faster but now you have more torque. So if he can do a double or triple gear system that is changeable it will be better than chain system I believe :D

[@aserta]

That's why when they used to make bikes like these, back in the 1800's they quickly ditched them when derailleurs started appearing. Chain reigns supreme.

[@kevind3185]

Not a power loss.more like a efficiency loss due to way to low of a gear ratio. But he could climb any hill slow.

[@radiocontrolled9181]

@@kevind3185 Slow indeed, pushing the bike i.e. walking it.

[@LionHeart_.]

It seems like you have to pedal 10 times more than you would do with a chain, just to gain a mere fraction of the momentum

[@stavid7870]

Yeah you'd need alot more gears

[@Vajrapani108]

@@stavid7870 that's just a chain but worse and more delicate

[@suzysuzuki8865]

Different size gears would fix that, this was a first run so he had to have some baseline. Wouldn't be hard to correct.

[@suzysuzuki8865]

In the motorcycle world bigger sprocket= more torque smaller=more top end

[@yadavzoze4752]

Yes

[@michaelcroos4713]

Awesome! And to make it even more useful, install a 3 or 5 speed internal rear hub, then you have gearing options without derailleur gears and chain to worry about.

[@kraxen72]

no one is gonna mention that shaft driven bicycles are already a thing? the prevoius bikes with no inside of the weel were cool but this is just a lesser known bicycle type that is already quite easily available and used.

[@FaresDjebbar]

I had one, it also had 6 different gears! This is not an original idea as you said!

[@Narayan_Patki]

exactly

[@ParodieHecker-mobile]

Well, he still built it himself. There are also bikes with no inside. So what? Still pretty damn cool imho

[@sean2661]

Very cool recreation of the original shaft driven bicycles. It's crazy to think that about 120 years ago, bicycle manufacturers successfully produced and sold bikes with these features.

[@incautious1]

Okay, where's the one you built? THAT is the point of his videos. He built it himself - pretty cool

[@chronocommander007]

Not to take away from accomplishing this engineering project but I had a Sussex shaft drive bike for a few years. The chainless drive was rather more experimental than reliable. The shaft drive was mated to a Nexus 8 speed. The drive was heavy with more friction than a chain drive and the drive shaft kept snapping under load. There were lots of alignment issues. The curved bevel gears also wore out quickly. The gearbox was made from aluminum and too weak with undersized hardware. Expensive, heavy, inefficient, unreliable. Belt drive seems far superior.

[@nadavgolden]

I wish you had companion videos about the engineering advantages and disadvantages of your creations

[@alejandroponce182]

I think if change te gear ratio this will be great

[@rahulsharma3911]

Yeah.. things like fatigue, abrasion, gear ratio will be the enemy, eventually

[@mddanishkhan40]

I am thinking this is very simple idea why no one can do before 🤷

[@MrFliffi]

@@mddanishkhan40 because it has been done before and chaines just work better

[@brauliorubio2465]

@@rahulsharma3911 100% truth

[@kicheollee7857]

This system by combining two gears is less reliable because gear teeth can be loaded heavier than original system

[@The_Silent_Killer_07]

Congratulations for discovering the problem for solution

[@jerryespinoza2113]

Shaft driven bikes are immensely troublesome. Chain drives are far superior and vastly more rugged. The shaft drives are outdated and always tend to fail due to the prying nature of the gears. Even with shaft bearings they are no comparison to the chain drive

[@tjfSIM]

Yep. There’s a good reason for chain drive being the universal mechanism for pushbikes. This is a bit like making a piston engined airliner.

[@nedviga3794]

100%

[@Gin2341]

shaft are also not that efficient when deliverinv power to the wheels compared to chains

[@imafackinjunglist]

@@tjfSIM or eating instant coffee without a spoon.

[@williamh4172]

Not to mention that you are stuck with one gear.

[@NJ-zz4gu]

It would be epic of he combined all of his insane bikes into one

[@MizanChen]

But if he combine both shaft driven and hubless bike together, the bike would be very2 slow

[@NJ-zz4gu]

True

[@EricFortuneJr.]

There’s no way to change gear ratios so hills might be a challenge. Another potential problem would be contamination and grit sticking to the exposed gears, grinding away and making it harder to operate over time. You would be oiling it down every day. These are some reasons motorcycles use sealed shafts.

[@scenicdepictionsofchicagolife]

Actually, Pinion, Rohloff, Shimano Alfine, and Effigear are all examples of multi-speed manual gearboxes for bicycles that could support multiple speed shaft drive bikes. Combine that with hydraulic disc brakes and you basically have automotive level technology and performance for a man powered bicycle.

[@ly5504]

@@blakejohnson3864 "One hundred million dollars". -Dr Evil

[@СергейДевятаев-я4ч]

Так на видео показали принцып работы.Шестеренки можно подобрать в нужном соотношении.Насчет загрязненности:можно корпуса сделать чтоб все в масле было и грязь не попадала

[@DokuFREENET]

Thats why bikes are made with chains , he did not discovered anything that wasnt discovered before, it is old building technique, not in use by any manufacturer cause of that

[@borgorajkeraban1403]

@@scenicdepictionsofchicagolife And you end up peddling 500 lbs a bike. Bright indeed.

[@kanishk6103]

That's great but, 1) You'll have to pedal more, compared to chain cycles 2) You'll have to pedal continuously, you can't 'glide' like you do in chain cycles Apart from this, Great Idea!

[@ЛЕШИЙ-вделе]

👍👍👍

[@Qwertyuiop-wg5xu]

i think it is possible to integrate the same mechanism present in the rear gear set into the current one if he did not do it yet, that way you can just let it glide, but true you have to pedal more than in a normal bicycle, and I would like to see if it is possible to add something transmission like to this mechanism, and I guess it is not impossible, but will definitely be time and money consuming, but I thing the end product will just be worth it

[@Swapnil638]

Ceramic Speed has been developing that tech for years (called “Driven”) to make it shiftable and race-capable

[@andrasolivier7185]

And unless they develop a heavily DNA modified racer with monster thighs they cant succeed...

[@Swapnil638]

@@andrasolivier7185 Looking forward to your research paper that rebuts the utility of that tech

[@andrasolivier7185]

@@Swapnil638 then u looking at a bad place ;)

[@Sweetpotato450]

No freewheeling 🤣

[@whereandbackagain7059]

For real! Stop pedaling and you're gonna know real fast.

[@ryuj1n.sr208]

@@whereandbackagain7059 ride fixed gear and it's the same. Idk which drivetrain I'd trust tho, a regular chain and sprocket or this thing

[@Srowotv]

Good job brow,but Repot kalau di jalan menurun kaki harus lepas dari pedal😂😂 yah make freewheeling...

[@joserizal5027]

They just give an idea.. just put freewheel gear.. no such big deal tho..

[@MrRaceles]

better to weld ring type bevel gear to sproket wheel ,after grinding teeths of wheel.

[@ronaldcash8492]

REMEMBER SAFETY FIRST

[@Hcheeza]

You'll need to put a kind of Free-to-lock reverse gear there, Imagine you'll injury your own leg because the pedals keeps cycling

[@butwhy9859]

Big brain

[@АртемМухамбетов-ы4н]

На заднем колесе велосипеда стоит обгонная муфта

[@zandarion]

free lock gear already is inside the ball bearing. and reverse cycle works as stop pedal. 2 in 1. like every old school bicycles. invented millions years before Christ :)

[@amjan]

It's in the wheel hub.

[@ipengsmart]

Yes. This is what i am thnking.

[@usmedassistenciatecnica7247]

Chain: 5% Power loss Belt: 12% Power loss Shaft: 25% Power loss 🤷‍♂️

[@LeftOverMacNCheese]

Well there's a reason why shaft driven bike didn't took off

[@arthurryanorilla356]

But as same as belt drive you don't have to worry about grease or dirty oil on you're leg. Mamachari or japanese bikes has all three of them in the past don't if they still have em today

[@brijlal973]

So shaft driven is ideal for exercise?

[@usmedassistenciatecnica7247]

@@brijlal973 if you don't like wind in your face

[@peterduxbury927]

Gear box - could be 50% loss

[@TheRealGreg]

Now build a geared transmission into the crank hub and you'd really have something! Nicely done

[@tomkacandes8286]

There are geared transmissions for bikes but definitely not a build at home sort of thing and the ones sold are designed to work with chain or belt

[@Al-ng2wn]

At this point just install a motorcycle gear box and clutch. Although I'm not sure if the gears ratios is suitable for humans.

[@branni6538]

Look in the video list below this video. There is a disc gear ratio in full effect and it is genius.

[@macpaz]

@@branni6538 are you talking about the video titled "Erstaunlich leistungsfähige Maschinen und extreme Schwerlastanbaugeräte"?

[@qwertpoiuy430]

@@Al-ng2wn I mean just ride a motorcycle, far better transportation method of budget allows

[@merouby]

1:25 to skip ad

[@ivanpaezcabo6300]

Well done but it needs a bigger crown gear.

[@strictlyaudis7012]

It won’t be practical at all for these reasons : constant pedaling, and you have only one gear also uphill and down hill will face a lot of challenges . Thanks for bringing the 30’s back , I love it hhhh

[@callumgill7019]

You should see what New York bike delivery guys do on fixed gear bikes

[@strictlyaudis7012]

@@callumgill7019 this is not a bad thing to do at all , it’s thinking and planning and doing something, it’s just won’t be as good as the bikes nowadays

[@creteking23]

No gear like 100 years of bikes. Except no chian to break or noise......great idea

[@kennnn2011]

I feel the same

[@guscurci]

Just genious! Depends on the outcome is better than bikes of nowadays. For instance I have been using inner tubeless tires for over 7 years now and just had to change them now. They don’t get punctured and are just a bit less confortable in terms of absorving impact when wheels get out of the ground. Obviously competition cyclists will have a problem with it. Since my purpose is having a cheap and exercising transportation, my chinese brandless bike does the job perfectly! I get to work and return everyday about 14km daily, not much but the bike holds itself steady and robust with 1 maintenance yearly. Would also change the system for this one if it was readily available. But I wouldn’t be doing the handyman’s work because I have no talent so just pay a specialist and done!

[@gadgetgus]

Nicely done ✅ A good take on an old idea 💡 It's amazing to think they made this concept, back to 1898 with the Chainless Columbia Model 51, which was also shaft driven... I have not seen it on a bicycle before, so that was fun 👏 It would be okay around flat, Flemish countries, since there are no gears. I noticed there is no retaining part, to hold in the modified - 'cotter pin', so it's just relying on compression, but that is an easy fix. Sometimes we have to go back, to go forwards... ie. A Hybrid engine originates over 100 years ago - from a submarine and the electric car was first developed in 1890, before the combustion engine, yet its become the 'new' thing... Good video, thanks for sharing, Atb Gus 👍

[@MainInternetUser]

Back in these days there were only shaft bikes, no chain it wasn't invented yet

[@hackdaniels7253]

@@MainInternetUser No. Just no.

[@SmallSpoonBrigade]

Shafts suck for this application. They're acceptable for motorcycles because you can build an engine that can provide enough power to make up for it, but they just suck. If you're concerned with maintenance the best compromise would be a modern belt driven bike. They're slightly less efficient than a standard chain bike, but they're much lower in maintenance. But, really, chain maintenance isn't that big of a deal.

[@gadgetgus]

@@SmallSpoonBrigade you make a valid point. There is another way... The future is 'frictionless', so no 'gears' - no 'real' maintenance needed 😉

[@zombie-process7025]

Yup. It was billed as "ideal for the ladies" because there was no chain to catch/dirty your clothing on.

[@tirebiter1680]

Back around 1899 to 1910 a luxurious expensive bicycle was made with a drive shaft that surrounded the right chain stay and had bevel gears on either end. This was an alternative to a chain.

[@johnrobson1309]

I've honestly never seen one of these shaft driven bikes. After seeing some of the comments and the video, I can see what the disadvantages are. Regardless, I'm still impressed you have the know how to put it together. I've always envied welders because it's something I'm too cautious to attempt.

[@ColinBarrett001]

Don't be John. Just buy a welder, find some pieces of scrap metal to practice on, watch some KZbin videos and have a go. C'n'est pas difficile.

[@craigstaggs8597]

I bet takin' a dump is a bit of an ordeal for you too ..... Puff .

[@peterlustig6888]

@@ColinBarrett001 Is there any danger involved with the electricity?

[@maxx6095]

Well if you have to be cautious, you might as well be cautious while welding !

[@angel-og.8261]

@@craigstaggs8597 stop, he’s already dead! ☠️

[@dastaniam]

This chainless bike looks great with the hubless tires ❤️

[@TalenGryphon]

Fun fact! Pierce Arrow (Yes, THAT legendary early automobile maker), made chainless bicycle in the early 20th century (At least as late as the 19-teens). They were beautiful machines, with fully enclosed geartrains to keep out grit and dust. Some even had full suspension!

[@jeremyashford2145]

A friend has one.

[@iamtheoffenderofall]

People like this guy in the video think they have something new when in fact its the oldest form of tech out there.

[@carldoomsday3975]

Ive found the only other mechanic on this video.

[@miroslavzima8856]

When there Is shortage for new tech, they start to recycle old ones. Still, it's interesting to watch how they cope with it.

[@ablelawrence5750]

Thanks bud

[@hunteraff5872]

Good idea until you crash, and now your stuck there bending aluminum back into place

[@naughtyfred1639]

The gear drive is pretty cool. Your fabricating skills are awesome. But I think changing a wore out chain would be easier than changing wore out gears.

[@rus8147]

Посность согдасен с тобой)

[@blazn0]

This gear system would break so fast going uphill. In 25 years of cycling I never had a broken chain. And I use my bike 7 days a week.

[@miguelnava8442]

@@blazn0 and the chain is actually more efficient and if you lubricate it (mostly like once in a month) it will last a lot of time

[@loxyrus]

make me wonder how car work without chain

[@blazn0]

@@loxyrus propeller shafts.

[@DiwanX]

It will be a good idea if you make another one in the other side with a different gear ratio, so you can switch between them.

[@FaithwalkerTodd]

You will need bigger sprockets on the front and the back. The drive gears need to be adjustable on the fly. So that you can change the gear ratio. I could imagine having the drive bar slide inside of itself, but also have a key to make sure that it’s rigid to the twist. It could slide slightly forward or backwards to change the gear ratio. The bar would have to get shorter or longer to change the gears.

[@deutsch-amerikanisch8281]

Exactly why this design is hasn't been used since the late 1800's. Because a chain can do all of what you said easier, and more efficiently.

[@MartinMMeiss-mj6li]

A bicycle with a drive shaft is nothing new. When my school class made a field trip to the Franklin Institute in Philadelphia in the 1960's I saw a drive shaft bicycle there. I think it was made in the late 1800's or early twentieth century.

[@ifsomasiauc]

I owned a bicycle with gear shaft and internal hub gear. Nothing new.

[@dmwanderer9454]

Looks like the gears were sliding a bit and it also looks like ur riding on a low gear setting from a regular bike. I think it would definitely break down after a few weeks to months of use

[@TheRonin248]

Looks like the gearing ratios may not have been taken into account. However this is still a great foundation to build from. Good idea.

[@SmallSpoonBrigade]

That would be tough in a bicycle form factor. Motorcycles have a fairly wide transmission that wouldn't easily fit into a bicycle. You could probably do something along the lines of a continuously variable transmission though as that doesn't require much space to work with.

[@thatraymond]

I think this is slick! Probably an issue if you get dirt/pebbles in the gears though.

[@macsiebb]

No chain, no grease, no gears, no breaks. Clickbait for me nothing else.

[@nigmatshabidiov9575]

Нужно постоянно смазывать шестерни, чтобы не износились. А педали нужно крутить в 5 раз больше чтобы скорость была как с цепью. Интересная концепция, но утопичная, на мой взгляд

[@flame5792]

Да я бы сказал вообще хрень полная

[@mikhailsabaleta7902]

А кто не даёт планетарную втулку поставить вот тебе и скоростя, также сделай кожух чтобы шестерни не торчали

[@mikhailsabaleta7902]

Но мне цепь больше нравится))

[@flame5792]

@@mikhailsabaleta7902 так этот хрен не поставил. Видать ему и так удобно

[@lamb_lion]

Ещё постоянно нужно педали крутить, особенно при спуске , а то ноги могут пострадать.

[@vincentwhite7693]

Anyone with any real engineering knowledge knows that this is a quickly thrown together project which may look good but could in no way be thought of as a reliable working machine.

[@stevespitler3070]

No way to lubricate things, must have. Lubrication.

[@ryanpersaud1267]

He's pedaling faster than he's actually going

[@jamesgizasson]

I'm not an engineer (flunked out), but I can see a few flaws. It needs a freewheel mechanism, the gears are unprotected from the elements, the driveshaft bearings are just tapped into the tube with nothing to keep them from getting pushed in too far, the crank gear is offset and unstable, and a kid on a Razor scooter could outrun that gear ratio. The sad thing is, this is a great concept! It just needs to be properly built. :3

[@intelligenceroboticworld2987]

No way can matter actually it's working thats will more efficient

[@jamesgizasson]

@@intelligenceroboticworld2987 Ummm... what?

[@kaseratarun]

My professor made this years ago, and it still is in his lab.

[@mohammadwasilliterate8037]

This design is probably a hundred years old, it's single speed and heavy, useless, which is why it isn't used.

[@teemoleague907]

The chain is cheaper and lighter. Waste of time , energy and money.

[@kaseratarun]

@@teemoleague907 it's true, but as an Engineer's experiment perspective it is nice.

[@teemoleague907]

@@kaseratarun hopefully he is getting the money off youtube for this or he he should report this channel

[@kaseratarun]

@@teemoleague907 no need to do this, the idea is already useless anyway.

[@obama9862]

Pretty cool, but I think a u joint would be better, at least for mountain biking. BMW actually made motorcycles with driveshafts instead of chains to atom mud getting in

[@willgarrod9907]

Awesome piece of rudimental engineering and a very clean fixie build. You will need to strengthen around the bevel gears as they will force themselves apart and 'jump teeth' under high load. The gear ratio is too low also, but overall it is an excellent job and a good way to get clear of the oily messy chains. Well done.

[@ПроДвижение-ч2в]

Да,в данном случае,планетарный механизм не очень крепок и стабилен , его нужно усилить и по возможности закрыть от попадания грязи и пыли.

[@patricktravers992]

Does no one care about a range of gears that you can use without rebuilding the bike when you need to change gear

[@typhoontim125]

Truth is, its completely impractical ..useless

[@typhoontim125]

@Danger Bear Its terrible..completely impractical...a good clickbait video tho

[@Scoobydoo_45]

You know this would chew up that small gear without lubrication after awhile. Just like differentials need oil to keep heat and wear down.

[@callumh9450]

Grease

[@Scoobydoo_45]

@@callumh9450 could work but it'll need to stay in the garage, what would make it better though is peddle assist.

[@timjohnson1199]

Ya know, there's a reason that bicycles evolved with a chain drive.

[@anmoldalal16]

I applaud the effort. I also submi my observations: Inefficient, prone to failure and expensive due to replacement needed of worn machined parts. Result: Good practical experiments are not based on old failed engineering concepts. This design has applications elsewhere. Eg:Ships, boats, gliders,tents, gliders, big top tents and weapons. That said a 100 on the video. P.S, On second thought There is a way to increase power output ;) Clue - "Be like water".

[@alanmckinnon6791]

Those conical gears are exposed to the elements - rain, dirt, grime, sand. They will not last long. Find a way to enclose them and you might be onto something

[@Mj-th7md]

Its call a differential

[@TheMikael666]

its actually the oposite, chain driven bicycles are less durable / efficient in the dirt

[@roamingdsk4803]

With deferential?

[@billjamal4764]

I don't think that matters much, I'd be far more worried about stopping, and being in complete control

[@recklessrickey9513]

@@Mj-th7md it is not

[@TamiyaPhilippW]

Improvements: Use ballbearings to reduce friction Make a more sturdy connection Make a gearbox Use screws with loctite to secure gears

[@isaiahwelch8066]

Actually, with this design, you shouldn't use ball bearings, but rather the same kind of bearings you find in automotive differentials, as they're cylindrical, rather than spherical. While they have a wider cross-section, they offer more stability to a linear rotating system.

[@TamiyaPhilippW]

@@isaiahwelch8066 true

[@louiewatson9389]

Loctite

[@onelastlap9302]

Hope those pins don’t fall out! Feels like they might come loose over time, but overall, very clean build and great video 👌

[@lunkydog]

Tapered pins..Very common in machinery, they will stay put.

[@platinum6978]

Direct drive is fun until u get your calf pinned inbetween the pedal and the ground 😉

[@memesfromdeepspace1075]

Weld it . problem solve

[@arontesfay2520]

@@memesfromdeepspace1075 No need. They'll actually adhere more with use. In fact, taking them out after a while can be challenging.

[@InsideOfMyOwnMind]

@@platinum6978 the rear hub was a standard single speed with coaster break. Still works as before but no chain. You can stop pedaling at will and coast or pedal back a bit to break.

[@timothyfelixjr.4881]

I love it! The drivetrain for a front wheel drive!

[@space_tv2002]

If we could make a gearbox near the back wheel then the speed can be increased with good efficiency.

[@unkulwilly]

or just use a rohloff hub. internal gearbox inside the rear hub.

[@chrisdaigle5410]

Geared hubs are much less efficient than chain drives.

[@Zach-ju5vi]

@@chrisdaigle5410 True but it would probably last forever with little maintenance.

[@reefread1234]

It's been done

[@Shalashalska]

At 4:41, the rear wheel spins about one quarter rotation after the pedals have stopped moving. With the design shown, that shouldn't be possible unless the gears are slipping. Looking at it frame by frame, it actually looks like the gear on the shaft is completely stopped but the gear on the wheel is moving. Is there some mechanism to disengage the gear that was not shown, or am I missing something else?

[@trickymathsmantra]

I too was thinking about that

[@SuperSohaizai]

He didn't modify the wheel hub, so I don't think it is any different from the normal bike where cruising (aka stop pedalling, wheel keep moving) is still possible?

[@fabbendale]

The wheel to pedals rotation ratio seems to be different in separate scenes which should not be possible and there's not a single scene showing actual start of movement by pedaling (he clearly pushes with left leg in that one scene) so I don't think the rear cog is even attached to hub (he just drops it in place and actually attaching rear cog to hub is never shown). I think this is not a working prototype but the bike is simply pushed to movement and he is just acting to pedal it forward. The scene with turning from left to right shows the bike to be very unstable which also suggests that he is not putting force to rear wheel but free rolling while acting to pedal.

[@Shalashalska]

@@SuperSohaizai Ah, right. I thought that was handled in the chain, but after looking into it, it is mounted directly in the wheel hub.

[@Gli4d]

That is the existing free-wheeling hub he has used.

[@КеггАннг]

Идея интересная, но на мой взгляд, надо на валу храповый механизм установить для свободного хода колеса.

[@rompure2795]

Не надо так сзади есть барабан который и так эту функцию выполняет

[@Михаил-р3й2л]

@@rompure2795 Зря Вы разрушаете этим людям иллюзии. Они достойны друг друга, один думает, что сделал прорыв в велостроении, другой даёт советы как говорили в фильме Собачье сердце "космического масштаба и космической же глупости".

[@antonbelochkin4861]

Так то не плохо, но потерь вагон, два редуктора ведь, придётся быстро педали крутить и тихо ехать

[@olliefoxx7165]

The gear nearest the pedal needs a guard over it to prevent things from getting between the mesh of the pedal gear and the drive gear. Dirt, debris, loose clothing and other things could get caught between the 2 damaging the gears.

[@dzetta369]

Во первых такой велосипед уже создавала какаято маститая фирма, во вторых было бы неплохо к этому делу притаранить гидромеханическое автоматическое сцепление рекуператор.

[@LinkFelton]

Awesome concept. Change up the gear ratio's so you don't have to pedal as much as well as maybe add some type of clutch on the front so you can stop pedaling without stopping the bike. I'd buy!

[@hissingoose]

Shaft driven bicycles are over 150 years old. They were abandoned for the chain as the chain is vastly superior.

[@Po_gribi_s_Yurikom]

Ну да просто бомбезная идея. 👌Только педали замучаешся крутить. Ну а просмотры будут на ура крутится😂😂😂

[@Pan_Witold]

Надо проверить изделие в полуляхах.

[@александр-г6я9д]

@@Pan_Witold я думаю это полная хуйня, созданная, чтобы просмотров собрать.

[@vaqtinchaoshiq]

Фигня полная.

[@maxkot3659]

Не говоря о передаточном отношении, пыли и грязи между зубьями и о шумности данного вида зацепления.

[@albertrozenfild]

Не случайно даже снимать подробно в движении эту хрень не стали...

[@shimul2007]

Congratulations! Now You can ride the cycle back and forth. 😍

[@humancattoy7767]

I see you have a knack for saving old tools too. Nice design. Simple and clean.

[@immobilegrain8809]

Hear me out it might look like "omg he is devolving" but when i was riding my bicycle the chain broke and the cycle didnt just fall and hit a car it broke my jwels this is what i need

[@YMYagizErgenc]

For shifting, driveshaft could be retracting or sliding (not stable like in the video) and wheelside gear can be conical. So when you shift the gear, shaft end gear will slide on the main cone gear. You may have 5 or 6 different gear position only. Since you won't be able to change the shaft end gear.

[@johndoe-so2ef]

Probably want to think that through a little more.

[@SharapovaFan]

Once he hits something really hard (or a deep pothole), those gears will probably decouple. Also, no adjustable ratios makes this only suitable for relatively flat cities.

[@georgvonsauer2618]

Insane...yes! If it were practical, it would be universal...I will take my multi speed bicycle over this single speed...never had a chain problem in my 65 years of bicycling.

[@hugoguerrero9814]

It has 3 gears Here , there, and goneeee it has the speed of infinity and beyond

[@gargipathak7954]

I have had some problembs but i will only say one thing THE KAWASAKI NINJA ALSO USES CHAIN TO RUN lol

[@suryagupta955]

@@hugoguerrero9814 lmao😂

[@curtsk19]

How? My chain fell off just yesterday

[@suryagupta955]

@@curtsk19 must be a cheap one

[@bigmac3006]

I had no idea how simple the switch over was!

[@slawomirb1984]

All disadvantages were mentioned here already, still it is great DIY, nice work! Dont use wd40 as a lube, its only good for cleaning old grease, for gears (and ordinary chain) use gear oil for cars and motorcycles.

[@limpet7r63]

In common use on motorcycles albeit with the bevel gears enclosed. Main advantage is no adjustment, cleaning or routine replacement needed. Disadvantages are weight, cost and significantly lower efficiency than a chain drive.

[@voyo9515]

I Congratulate your ingenuity and aesthetics of performance. Better if the gear would have with oblique teeth like an angle grinder (less vibrations) but that's just my suggestion only. And it would be even better if the gears worked in a closed housing, flooded with grease (durability, wear) By the way, that the rear gear mount will not bend over time, causing the teeth to jump. It seems to me that when you step on the pedals harder (riding uphill), this single plate will be deformed.

[@prakashvallullissery1231]

This man makes my childhood Ideas in real Life

[@Famelessc]

I thing, it is much less speed than normal bicycle

[@ilmi-ne]

two years later... to the bicycle repair shop "Sir, I want to replace the chain sprocket on this bicycle, it's worn out" mechanic : are you kidding me🥲

[@ascher40]

You should be very proud of yourself....it has problems such as wear, gearing etc, but you got it running! Well done.

[@EveryoneneedsaGary]

Aesthetically this covert bike design is awesome, at a glance you’d wonder how it was propelling itself.

[@knowledgeresearch7628]

😂😂😂

[@jimhresco1728]

A large chain system will last way longer than that small gearing system. Teeth will soon start to strip. Going down steep hills you have to place your feet off the pedals. No shifting already mentioned.

[@trickydicky2908]

Too much criticism from people who couldn't pump up a tire without botching it. Great craftsmanship!

[@davemanone3661]

Just what I was thinking!

[@Baryogenese]

It is trash, he just made a good mechanism 1000 times worse and turned it completely useless.