How to Make a Speed Bike 

It's a fixie, a fixed gear bike, to brake you have to stop pedaling

@@eljigui9131 if you think about it though the gear ratio works in reverse too i think i haven't ridden a fixie before but if the gear ratio works in reverse then you get the same amount of torque back and it has very little torque so you're better off stopping by just letting air drag slow you down.

@@eljigui9131 Check back to where he puts the chains on...

@@eljigui9131 If you stop pedaling at like > 30km/h it will break your shin before slowing down a bit

@@eljigui9131 no it isn't.

probably coaster brakes

@@ethan944 I thought it also, but I didn't observe any bracket protruding from the rear hub

He made a bike built for.. *speeeeeeeeedddddd* CAUTION: brakes sold separately. Lol

That is weight reduction

Just said for speed, never implied for safety lol

This thing is just meant to have the highest gear ratio he could think of without making a front gear the size of the wheel itself. It's a proof of concept, not a product.

this is a chinese channel did you really expect them to do anything right

@@logandunlap9156 : It is often when you underestimate your opponent that you are best crushed by him.

Probably 10 to 11 gear ratio. Seen higher....

@@xXGeth270Xx 🤡

honestly just starting to pedal on this thing on flat ground seems painfully hard

that's why you get a hub motor on the front for electric assist

@@kingmasterlord Might as well get a road bike at that point, and they're faster.

Infact he was on descent

Way to miss the point

I mean, get it up to 45MPH and it'll go up that hill, so long as the hill don't last too long. XD

So what direction would you go with the ratio? or, does anyone even know what the ratio he has now is lol. 😆

@@kennethferguson9828 presumably you’d do what actual bikes do, which is have a derailleur so you can start in a low gear and adjust the gear ratio as you need to.

pair it with a wheel hub gear box and you should be good to go.

That's the thing you WILL 100% stall if you launch your car at 3rd

If there is a will, there is a way !

@@p.magnificus7005 well said🐱

@@p.magnificus7005 liked

+

@@p.magnificus7005 will = money and he said he doesn't have money baka

red makes u go faster check orks in warhammer 40k

@@lythicology5041 it's not yellow

=PAINT ALL IN RED BECAUSE RED MAKES THINGS FASTER .........YUP,WARHAMMER40K,HEHE

It's true, ask lightning mcqueen

Its a tough call for me between the 2 you mentioned, and sloppily hole saw-ing chunks out of the frame members.

Can I have it?

Do you ever ride the bike?

Because it didn't work- nobody can go faster just because of higher gearing. In fact it would slow you down until you drop down a bunch of gears.

How did if feel?

So it is really difficult to start the bike with such a high gear ratio?

Take a while to get up to speed though.

@@the_inquisitive_inquisitor Only normal to think that tbh

Can’t imagine the torque that’s lost from that ratio

I bet there's a market for this bike in The Netherlands then :D.

@@Mike-739 Just imagine the leg gains...

And poor knees...

Did you calculate the drive ratio? Must be silly

I am more shocked to see the original built quality of this bike. Ouch.

Pfft mean while Street kids and teens in my country has rusted chains and no breaks while wears flip flops and challenges each other to a drag race.

@@JomokFelasco R u from Brazil or Phillipines or Indonesia or any other ?

If you want to build a higher speed bike, i cant think how adding breaks will increase speed of the bike... 😀😀😊

@@mmeettwwoo It increases the possibility of being able to ride it again and again

I was thinking 2 sets of pedals. One set like normal bike, the other for high speed. Then you could switch between conditions (uphill-downhill etc.). Upper pedals might have smaller cranks. But then simpler to have e-bike..! :)

@@RJSoftware2000 that is actually a good ideas, a separate gear ratio for different speeds and possibly different riding positions based on the speed

@@then00brathalos or you could use a bike with a rear durrailer and even use the third and second gear on the reduction stages with front durrailers. That last idea would unfortionally make for a very complicated gear change setup with up to four shift levers.

@@then00brathalos Yeah but having that many moving stuff would reduce efficiency due to more frcition, would make the bike harder and more expensive to maintain, and would have more failure points, better to just have rear and front durrailers

you can actually use the weight of legs to pedal it is not as hard as it looks

The whole point of this project was to make a cool video, so of course some of the painting choices aren't the most practical.

⚰️

And they look a lil loose too, not so sure about this one

@@Raging-Lion yeah don't try and go up a curb, you'd lose all the chains haha

He spins the peddle backward to test it. I don't think it has breaks even with the chain.

Well, let's hope there's enough room to maneuver at the bottom of the slope

Yeah, but with that much torque, they can probably climb walls!

Quite a long number of years ago, Hot Rod Magazine had a article about a guy setting the bicycle paced land speed record. They built a shed on the back of a car, seems like it was a supercharged '58 Chevy. The cyclist pedaled inside the shed while the car and shed pushed the air out of the way. That bike had a front sprocket bigger than a pizza pan, as I recall.

These principles in generator, really?🙄🙄 Generator requires huge torque to rotate the shaft. This setup didn't work for genarator.

@raydubBALTANseijin It does apply, but in the opposite way of what you want in a generator generally

@@sandeepvardhan7583 Generators are powered through induction, which makes little to no resistance. So if you have a high torque, you want to convert that to speed before you get a good current off it.

What effect would that have? it would still generate the same amount of power

@@ashrude1071 More friction, more parts that can wear out

You'll only be disappointed when you try going over 15kmh or so.

Because it is single speed. But somebody has to pull/push him to start.

Она может зажевать даже мимо проходящих детей

I think that's 50kph, so 30mph.

50kph =/= 50mph

Easy to do when you're hyper-focused

Not so "rideable" without brakes

What do you mean by efficiency? A pulley system reduces the force that needs to be applied to get momentum. You get more speed with less force applied. I don't get it what's the problem with this ?

@@MybeautifulandamazingPrincess probably efficiency in general, for example the human effort that takes to start up the bike to a reasonable speed

I... Don't think this is true. Something else is pushing him.

@@omarrama92 lol I can do 25mph on a regular hybrid bike. My legs are thick af but hey. Let's just say the average joe's legs look like chopsticks

He can go alot fast than that if he is strong enough to paddle

naaaah kilometres per hour probably

His gauge is in kilometers already.

Frankly, gearing has never stopped me from reaching maximum speeds, it's always been aerodynamics and pulmonary / cardiovascular capacity...

@@rey_nemaattori Agreed. If anything gearing helps because it's possible to squat 400lbs compared to 20x20lbs in a second... Also agreed, it's always my cardio endurance that fails first; it'd have failed at lighter ratios just for the aerobics vs intensity. My cardio has always been terrible, hate it, hate it, hate it.

@@GRAYgauss Gearing absolutely helps, but it always is a trade off in power required per stroke. Eventually you're going to need so much power it simply becomes impossible. Especially since you're not just pressing 400 lbs in a second, but _every second_, thats when either fatigue kick in, the muscles can't move the load or the body can't supply enougj oxygen. For most people it's easier to press 20 lbs for 20 seconds that to press 400 even once .

@@rey_nemaattori Eh, bad numbers on my part. I was imagining squatting and that force that goes into pedalling when I go up hill. My point is that the human body can't move fast enough to pedal 20lbx20 in 1 second, but we COULD pedal 400lbs once in one second. For me, it's easier to pump more per cycle than many cycles, because I have terrible cardio but good mass/strength ratio. Bad numbers again, but that's the idea...The balance in my mind is most efficient when biased towards 20% speed and 80% max force rather than 80% speed at 20% force. Agreed with what you said on power, but for me I'm biased to feel that high speeds are more impossible than high torques. The fastest I can go isn't when I'm peddling like a demon, but when I'm taking about 5-6 seconds per foot to torque through and the entire follow-through feels like a rocket acceleration.

You think just making the wheel spin faster will make you go faster?? You're gonna have to deal with torque as well.

@@omarrama92 ofc ? it's basic math, what are you talking about? There is no free power in this world.

@@luongtrivi You're absolutely right!! I thought you didn't know this, and thanks for the reply.

@@omarrama92 ok

да нифига это не работает. По прямой на фиксе и без этой ерунды можно разогранить, не говоря о простых велосипедах. Там потери энергии просто фантастические, не говоря о том что в горку эта конструкция вообще не заедет, да и толкать эту шарагу даже по прямой долго не сможет человек без подготовки.

Самоделка полная хуйня, и я объясню почему. Вваривание в раму, в нагруженный элемент тонкостенных алюминиевых картриджей кареток - это настолько тупо, что просто разрезать раму пополам и так оставить. Люди выкидывают рамы дорогих велосипедов, когда на них появляются меленькие трещинки и боятся их варить, посколько сварной шов или пайка будет тянуть металл на себя, создавая избыточные напряжения, которые могут привести к новым трещинам. А тут он алюминиевую фольгу в раму захреначил! Так еще и нагрузку на это дал! Я вот такую тенденцию замечаю только у азиатов, чаще всего у индусов. Они берут велосипед и всеми правдами и неправдами повышают передаточное число, прибегая к таким методам, от которых сопромат впадает в ступор, и пока он из него не выйдет, конструкция работает. А, забыл спросить. У вас там вообще подъемов нет?

Есть более простые и надежные способы увеличить диапазон скоростей. 1) замена переднего чеинвилла на побольше, но не как на Мелиде автора. 2) все. Если МТБ чеинвилла не хватает, ставишь шоссейный или циклокроссовый. Если и этого не хватает, продаешь мтб и покупаешь шоссер. В кармане опустеет на несколько месяцев вперед, зато не сдохнешь от проникновения переебаной рамой в брюхо.

Ни какого КПД я в этом не вижу, можно сказать только минусы .

not that fast

47kph, which is about 30mph, not bad at all

@twin7s Well it's been geared up loads so I would have thought anyone could get it up to that kind of speed

@twin7s i agree, i hit a top of 30mph on my bike on flat land (i am locked out of the two hardest gears ‘cause racing regulations)

@@BillSikes. it would be a pain in the ass to get started though.

Asparagus physic obligaytion

That is weight reduction

The bike needs no break. The bike breaks you.

GPS speedometer

I was honestly thinking how much force you have to put into actually getting it moving, since at such a speed he was peddaling pretty slowly

@@stefan-viorelnagy5181 he wasn't actually going as fast as the speedo showed- he altered the speedo settings to look faster.

@@rossbrumby1957 Was probably in kilometers per hour

Wall

@@jimmieww Fair, I was thinking more along the lines of the first "bigwheel" bikes' user manual... it literally wrote "to stop the bike find a haystack"

Hes descending,maybe around 300-500 watts

just add a CVT at this point it could be the first CVT on a bike maybe

It's a cool little project, but this shit is slower than a cheap road bike lol

There are gearbox bikes, like the pinion one, but you'd still be limited by your legs and the added weight doesn't help you compared to your typical road bike. The limiting factor for most cyclists isn't the gear ratios. It's always the engine (rider). For context a 11/52 setup has a top speed of 54kph at 90rpm, but most riders can't reach that top speed due to not having enough leg power.