Hydraulic-Powered Bicycle Wins National Contest for Purdue

Purdue University Mechanical Engineering

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Full story: bit.ly/hydraulic-bike
Hydraulics power giant machines, from bulldozers to airplanes. But can they power a bicycle? That's the idea behind the NFPA Fluid Power Vehicle Challenge, a national contest where students build a chainless bicycle, powered solely by hydraulic pumps and motors. Purdue University won the 2017 competition, with students designing a custom bike frame that doubles as the hydraulic oil reservoir, and a smartphone app to monitor telemetry.
Maha Fluid Power Research Center: engineering.purdue.edu/Maha
The team is made up of Mechanical Engineering and Agricultural/Biological Engineering students: Professor Andrea Vacca, Chenxi Li, Yizhou Mao, Gianluca Marinaro, Zhuangying Xu, and Chen Zhengpu.
Agricultural and Biological Engineering: purdue.edu/ABE
Mechanical Engineering: purdue.edu/ME
NFPA Fluid Power Vehicle Challenge: nfpahub.com/fpc/vehicle-challenge
Purdue's chainless blog: chainlesspurdue.edublogs.org

Опубликовано:

24 апр 2017

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Комментарии : 92

@federicoromero6130 6 лет назад

This is a design exercise. It is meant to educate the students building it and create a context where innovative ideas can arise. Ideas that will probably never be implemented in bicycles but will live in other machines. Stop worrying and criticising, this is not meant to go into your next bike

@AstroZon1 6 лет назад

I think most viewers missed this very important point. And it may never be practical for normal use, but a motorized version of this concept could be very advantageous in certain conditions like rough terrain or driving a tracked vehicle. There are always benefits from design exercises.

@blueckaym 3 года назад

I completely agree with the design exercise idea! But then it was misrepresented in the video. Also in order to apply it in any field important thing would be the efficiency (even if aparatus is too heavy to be practical in bicycle), about which nothing was told in the video.

@blueckaym 6 лет назад

you only missed one small detail in your presentation - how it WORKS?! ;)

@nomadicscrapper2965 3 года назад

Nah you just failed to understand the presentation they literally explain it

@thats_my_comment 3 года назад

😆😆😆 exactly

@sign1in 6 лет назад

Nice design concept, and I could see it actually being applied to cargo bikes in places that UPS an FedEx use quads an trikes to deliver packages. Good teamwork, hope the team learned a lot. Though a little more on the process the bike goes through from pedal to motor would have helped.

@A861967 6 лет назад

congratulations to all the team, inovation and progress is the only way to improve. hope to see this concept applied to other areas 😊

@MrRonluker 8 дней назад

Not enough information. Specs would be useful. How much energy does it store in distance?

@user-yv4yd5ks2z Месяц назад

can you make it with a 12 volt dc electric motor to turn the hydraulic pump

@vernonvouga5869 4 года назад

What about a variable displacement pump as an input? Connected to a throttle like grip, so you could change "gears"?

@guitarttimman 4 года назад

Many years ago I was a mathematics scholar at Purdue. You make me proud!

@user-yv4yd5ks2z 18 дней назад

will it work with a 12v pump ?i'm going to see,thanks for the inspiration!

@dariods76 6 лет назад

can you please give details of the pump and motor used and the gear ratio of crank to pump and motor to wheel drive

@JoeZelensky 5 лет назад

Your rider needs to raise his seat a little, and you need to increase the amount of fluid moving. He should have been going faster for how hard he was working.

@zico3239 6 лет назад

hi anybody got a link to buy the pump and motor?

@jeffiscool1805 6 лет назад

Pump specs please??

@vivekdhande3830 6 месяцев назад

How much weight this bicycle can carry..

@oM477o 4 года назад

You could totally make an all wheel drive bike with this

@ph11p3540 Год назад

I was thinking the same thing. Dual wheel drive at last. A real boon for mountain, mud, and canyon biking.

@calebmallen 4 года назад

A hydraulic bicycle... the coolest Rube Goldberg machine in the contest 😄

@widsquard 5 лет назад

Slow, impractical, and highly inefficient. I love it!

@davet982 6 лет назад

i have had a bike with a driveshaft and a 7 speed rear hub since 2008 ..it is almost maintenance free and fun to ride and no grease on your clothing

@j-man72b72 6 лет назад

People have had feet since the beginning, totally maintenance free.

@bikeroftheeverywheres864 5 лет назад

Could you put up a video of it? Sounds interesting!

@JoeZelensky 5 лет назад

@@j-man72b72 not really. Look up Army and Marine manuals for rucking.

@Pneubike 6 лет назад

Does this bike have a hydraulic accumulator? There is the ability to create an effective regenerative braking mechanism on a hydraulic bike, did you do it?

@theshermantanker7043 5 лет назад

@@PurdueME What type of accumulator was it? I'm guessing a gas pressure one. I'm also assuming that's where the energy mainly comes from; I highly doubt you can fit a pump and all the stuff a pump needs to function on a bike

@PurdueME 5 лет назад

@@theshermantanker7043 You can see all the plans here: nfpahub.com/fpc/wp-content/uploads/sites/4/2017/08/2.-Purdue-U-FPVC-Final-Presentation.pdf

@jowindavid7560 6 лет назад

Great job.

@shubhamprajapati8319 6 лет назад

Maximum speed ??

@TriPham-xd9wk 3 года назад

Transfer your weigh on the hydraulic air reservoir to help drive power to the wheel

@laszloiszlai 2 года назад

I think if you had added a larger pinion to the front and a smaller pinion in the back you would have used your hydraulic energy more efficiently, because the hydraulic scare has a large force that with a little physical effort can spin the first pinion no matter how big, the small pinion in the back of the wheel is for speed, normally it's the other way around , i.e. small pinion to the pedal and big pinion to the wheel because we don't have enough force to pedal quickly, but with hydraulics it can be done because we have force with little effort. You also need to add a gearbox to turn force into speed.

@ph11p3540 Год назад

Look past the fact that this bike looks heavy and look at the full potential of a dual drive wheel bike with this setup for mud and canyon biking once refined.

@geemanfunman1267 2 года назад

Am I missing something. I don't see top speed In fact it seems to be more work to pedal faster in order to move.

@ericpham8205 3 года назад

The hydraulic heavy equipment pop ment can be converted to hydraulic powered mechanics

@mikebergman1817 3 года назад

Seamless design..

@mrshah2043 6 лет назад

You can tell they're engineering and math students by how good their English is.

@guitarttimman 4 года назад

Purdue is an excellent school. I studied higher mathematics at that school. I was also tested. I scored the highest in the state on the Casa Core Math exam in Indiana. I have a degree from another college, but I studied mathematics and even took a physics course there! The instructors there are awesome. I think the best I've ever seen .

@shizzywizzy6169 3 года назад

Lmao

@colonelsanders9637 3 года назад

@@guitarttimman congratulations Tim, we're all really proud of you ❤

@larryfogle3697 2 года назад

They didn’t have common core shoved down their throats.

@rockskipper5353 Год назад

What if you used an electric hydrolics pump

@giorgioscruz961 3 года назад

Would you help convertido my diesel sailboat to an Hydraulic powered sailboat ?

@punman5392 5 лет назад

You could use a flexible line to make a front wheel drive bike

@wahidpawana424 3 года назад

My thoughts exactly. But to synchronise the rotations between the front and the rear wheel would be a problem.

@floflo8018 5 лет назад

and they constantly use gear ratio that make you spend more energy shaking your legs than propelling the bike xD

@elgracko 3 года назад

maybe you couid add hydraulic jumping to the suspension, like lowriders, so you could jump onto a sidewalk or over a hole offroads...

@wg9601 5 лет назад

They likely fucking up the bike if that crank was a pump and that pump didn't have a moister absorption filter.

@sanjose6018 6 лет назад

How COOL

@demackire6368 3 года назад

That is one hell of a bike. But only rich people can afford. 😂

@hotlemongingerhoney 3 года назад

I think the simplest is the best. Hydraulic on bike is surely just for fun.

@yanikivanov 3 года назад

If you can make recuperate pressure instead of braking then yes...this technology would revolutionise world

@mfrandlett 6 лет назад

Cool! Why don't they put a hydraulic drive system in a car, where the pressure regulator and the engine speed are computer controlled for the best mpg? It could be set up inside the car to look like a normal car...

@tgfedi 6 лет назад

Actually it's kind of in use in cars for some decades now. t's called a torque converter used in some automatic transmissions.

@klugshicer 6 лет назад

Theoretical advantages (optimale RPM, smooth power, continuously variable transmisssion). Will most likely be cancelled out by practical disadvantages (cost, complexity, efficiency). But if you want to realize the theoretical advantages you could go with series hybrid (i.e. electrical transmission). tgfedi not really the same idea. Torque converters are hydrodynamic, this bicycle is hydrostatic. Also torque convertes, when enganged, make fuel economy worse.

@klugshicer 6 лет назад

Great machine, though I'd be interested in some details, i.e. -Gearing? -Regenerative braking? -Efficiency?

@PurdueME 6 лет назад

You can see more details here: chainlesspurdue.edublogs.org

@mowler8042 Год назад

Really need so much fluid?

@mattweger437 7 лет назад

But... why ?

@Shindinru 6 лет назад

Because as he said, it's an unordinary application. It's not something you will mass produce and sell, it's about applying their training to an unorthodox problem. It's a teaching exercise.

@20thFlightRocker 4 года назад

And weighs only 100kg

@MrWayneploof 5 лет назад

I Don't understand. why build a hydraulic bicycle this looks heavy and like it would cost as much as a small car but I will say it is cool and they did a nice job doing it

@Unistrophe 11 месяцев назад

👌✌

@CK-ru6jt 6 лет назад

Hydraulic tork has many power conserve advantage, unlike the fossil/all-electric cars & bike companies, they use pure tork of the engines, this results in using speed transfer into horse power, but with hydraulic, it's strength power already converted to speed, which only requires power to the mini pump, which then flow the gears of the hydraulic. It could have been a great advantage to those new Tesla trucks and even sports cars or non-pedal main road bikes, just like the examples in these bicycles.

@kaye2890 6 лет назад

Bicycle is a light transportation. With all the extra staff - fluid. It just add weight. I don't think this idea will ever be in commercial production.

@Shindinru 6 лет назад

It's not meant to be. It's a design exercise.

@gerry343 2 года назад

Its not hydraulic power- the power is provided by the rider!

@karabey4 6 лет назад

it does not seem efficient. If not efficient why are you being produced? engineering means efficiency.

@taupoguy1 6 лет назад

It looks heavy and over engineered compared to the one designed in England in 2013.( its on youtube too.)

@denisupriyadi3792 6 лет назад

Natt C ssc ßb

@SwarthySkinnedOne 6 лет назад

Natt C

@dariods76 6 лет назад

Nat C - Can you please post the link

@thats_my_comment 3 года назад

what exactly is the point of it...? 😆

@omarjames01 7 лет назад

my design is much better more simpler and faster. but good work

@iykist 6 лет назад

post or send a link to your design.

@JohnAlexanderCain 3 года назад

you can tell these students never ride a bicycle, why would they create a bicycle that weighs 80 lbs? With this kind of knowledge, it would be better suited to create something actually useful and/or practical. For example, bicycle powered water pumps, refrigerators. Or perhaps an electric generators for powering devices such as cellphones, wi-fi hubs.

@theanimaster 3 года назад

Errrr...I’m with the other person - but why?? Unless you can charge this thing for a super boost up a mountain or steep incline … I need a genius to explain this in normal cyclist terms…

@ElGatoPardo693 5 лет назад

How about a bicycle that runs on gas from my farts?

@philc9305 4 года назад

So nothing new as far as inventions, just a different application that doesn't make sense.

@LifeofLeium 3 года назад

yeah go look at colinfuzes bike of hydraulics lol its a lot better

@nadejdajeanschmidt1015 7 лет назад

i don't see eny benefit's in, to have a bike like this, it's very expinsive in parts, i gess it's havye, but also ugly, it's mabye funny to bild, but to use it dayly in a city to work and back, no thanks..