WORLD'S SIMPLEST Bicycle Speed System ( Part 1 )

[died4hislove]

Please watch also, THE SUPER-EFFICIENT ENGINE ( Part 3).

[currishev]

Gear box is for adjusting wheels' torque-RPM for road condition providing constant power input in the most efficient for processes rate of an engine, regardless it is ICE, or steam, or electric-motor or muscles. It means, torque times RPM on engine site (or crank shaft) must be constant. Changing the arm violate this, so the "invention" is B.S. both physically and technically.

Dear "inventors", get fundamental education in science before bothering selves and others, with your "discoveries".

[aOa0a0]

@mengu1988 "you also need to adjust your bike's seat height. otherwise you'll lose ideal pedalling position"

No Mengu, you're wrong. - All you need is to adjust the same mechanism on your legs. simple.

[lesterlabo]

ito lng po ang nagustuhan ko sa videos nyo po..

[54446fftf]

dam nice do u know were soem one coudl get one of them and how strong is that slider?

[1crazyfocker]

holy cow, you mean you came up with an idea for your self!!!!! wait maybe i should look it up first, after all all "your other ideas" have been inventions that are over 100 years old. oh what the hell i wont bother and just say nice job if you did really think it up your self

[Pieb4]

good job you invented longer bike pedals

[Anteater1234567]

Erm, the cadence needed to go at a given speed is the same... which kinda defeats the point of having gears.

[jason4amd]

running a high tensil spring inside would cause it to become a tourk agustible system ie the more weight aplyed the more extension given les weight less extention

[skylar530]

@jason4amd i think that idea would be good. but at the top of the peddle stroke you would be pressing down on the spring so it wouldn't start be extended untill u got past the first 90.

[potheadpenguin]

To me, this just looks like a way to increase your chances of running your pedals on a curb or simply having them snap off.

[zeekle]

Don't spend time/money inventing stuff unless you really understand the thing you are trying to improve. This invention will alter the knee position. If you have your bike set up correctly, your knee will be in the ideal position, but if you shift gears with this invention, your knee position is no longer correct. Lots of people think all cyclists have to is "get on a bike and pedal like mad". Later, they wonder why their knees are hurting and they learn about cycling ergonomics.

[zeekle]

You have great mechanical-invention skills but you should get more experience as a cyclist first - maybe then you will come up with something great.

[maxtofi]

@buckfushes . Yes.. they sure do!

[maxtofi]

@mengu1988 . Sounds like a hassle for my part, long distance biking with heavy stuff! I wouldnt want to stop and change my seat everytime. With the bad positions, my back and knees would bust!!

[kdc43]

This, I'll pass. Give me Deraileurs.

[MsBeastman]

ugly and impractical

[MsBeastman]

ugly and impractical

[Jthetinman]

Holy shit!! Betcha got rich off that!!! Hahaha ha hahaha haha ha ha hee hee heeheeha ha

[pissinacup666]

@mengu1988 and also it would be helpfull to beable to change to and from without having to stop

[turbotonic27]

wtf

[Matrix29bear]

Why not just have the pedal retract using a spring or hydraulic mechanism?

It looks like you contract the pedal length at the top of the stroke and extend at the bottom of the stroke.

[KingBlooh]

O.O  ah... I gets it, really kool... nice :)

[Iridethedirt]

The amount of time required to "shift" gears, and the mechanism by which you do so is vastly inferior to even the lowest end of 3 speed crank and derailleur systems. It is also probably heavier, and does not allow for ease of use in "clipless" pedal systems. Bad invention.

[C3r4ph1m]

this is gonna be heavy...  and i dont see how it'd stand up to a vigorous ride, i'd wreck that in a week or so from what i can see

[TheHsv666]

only thing i want to know it when its on long length how does it lock so you can put all your weight on it? but then what stops it from changing from short length to long length when you put pressure on the pedals

[kijhed]

who you reach the pedal in short version?????

[atomic1234567890]

do not change the gearing but shorter crank help for faster pedaling and longuer (by lever effect) give more torque

nice idea but i dont think professional bikers will buy this its probably too heavy and too soft or not durable (compared to a normal crankset)

[fairyheli2]

what will stop you from pushing the peddles up or down while peddling??

[terrifiedprojects]

great out of the box thinking ;)

[PacManJulie]

We should be using jet paks by now, or at least be transmuted into beings of pure thought and energy, thus moving at will and without the encumbrance of our present meat sacks.

[ragingmics]

i saw all your "BIKE GEAR" inventions... im a downhill biker, jumper, xcountry biker, men ive been riding bike for more than 15 years now. and all i can say is,

QUIT the "BIKE" invention shit and try to invent something else... long length for torque, short length for speed= long days of sore muscles and short length of life..

[Rx7man]

I think this has much more promise than the new engine system, I really like this idea in it's simplicity :)

[duaneafields]

Creed sucks when the singing starts, It's just a great riff at the begining.

[whitebear26]

Wow, it's even more stupid then your other inventions...

[houie925]

you should add a way to move the bottom bracket up and down to make the bottom of the stroke end at the same height in either mode.

[awizardalso]

The only improvement I can see is a mechanical apparatus that will permit a change in crank length from a handlebar mounted control. Never ceases to amaze me the things some people can visualize and actually build. Well done.

[whiteguy2369]

change the name from tabag to tebag HA HA

[fantscher]

sry, doesn't works...

you would need a "shiftable" seatpost. and if you change the seatpost, you have to chance the hole geometry xDDD

otherwise it is inefficient...

[liuwenjie6678]

@mchimonas lol

[liuwenjie6678]

useless

[WICKEDREGRETSgaming]

it doesnt matter about the size of the crank stupid ass its the matter of the size of the sprocket dipshit the smaller the sprocket the faster u pedal (speed) and the bigger the sprocket the more and harder you have to pedal (torque) just like on a mountain bike duh!!!!

[bungalobob]

@WICKEDREGRETSgaming dont get a hard dick bud. the equation for torque is radius multiplied by force. This invention increases radius thus increasing torque.

[WICKEDREGRETSgaming]

@bungalobob well yes that makes sense but why spend like 100s of dollars on this wen u could spend 40 bucks for either a smaller or bigger sprocket?

[moochonz]

the fact that you have to change each side independantly makes this ass! imagine trying this while you are in the forest up and down trails, this would just Not wk, NOT SIMPLE AT ALL .

[pdxktv]

Maybe I am confused but isn't that going to change the angle of your knee? Seems like it would create fitting issues.

[JTMarlin8]

LOL what a gimmick.  AHAHAAHAhA POS.

[monoqoque]

too bad for the knees ....

[chuffernuts]

nah, sorry keep inventing...!

[milespapineau]

its too wide, ur knees will have to be so far apart. less efficient.

fix that and this will b great!

[OskarMatzerath95]

isn't the highest power you can put on the crank is when the arm is the longest? and also the highest speed?

[bluemarvin27]

Its better to train your muscles at a particular pedal length that matches your body and riding style.Making your muscles work more efficiently and you & your bike go faster. I'm a physiotherapist and we studied this(varying torque arms and its effect on the body) in Kinesiology class. Its use would be best for rental bikes with people of varying sizes using the same bike. But hey dont stop,continue inventing.Go Pinoys!!!

[bluemarvin27]

Nice concept but shifting gears is different from changing the torque arm.changing the pedal arm length changes the way your leg power translates into torque.What is does is give you 2 cranksets or crank arms in one.1 for very fast spinning/low torque and the other slower spinning but greater torque but if you match this to a ten speed system it is still a ten speed system. and not twenty as you said.

[ski4ever2008]

I think a derailleur would be way easier, more efficient, and might even weigh less. but good idea.

[SloperSteve]

great work.

good job.

Perhaps add springs then it will have dynamic gearing based on foot pdeal pressure?

You will have infinite gears and always be in the perfect gear in theory!!!

great work.

good job.

Congratulations for designing and doing!

[FordsRule351]

holy shit FUCK YOU. creed is awesome

[980engelben]

Really don't say a mechanic doesn't know anything when he has more experience with bikes than you know how to breath

[980engelben]

really james, then what is the difference between a monocoque frames and multi piece frames. what is the major difference between the new shimano di2, ultegra sl ultegra and shimano dura ace 7900? Oh and here's the clincher, how do you adjust a derailleur, (hint: it involves limit screws). What exactly don't mechanics know? Remember assuming mechanics don't know anything makes an ass out of you and me. How many years of experience on bike work, not riding them and thinking you know how they work

[jimguzinski]

watch your knees

[motobecaneguy2]

this looks impractical

[980engelben]

I'm a bike mechanic and this is stupid. Great in concept, but if you've done any fit training, you can see that it's gonna kill your knees and that it is a waste of weight. I have an amazing Idea, get a ten speed or a single speed or any where in between, easier maintenance and you don't kill your knees. oh and the bikes name says it all TABAG (as in t-bag design). way to go sarah palin

[JamesThWilliams]

Most bike mechanics I have met have been a dissapointment in their lack of mechanical know how. Not saying this is a good idea but I like the creativity this guy displays.

[15commandments]

It's Creed, not Staind.

[lilrebelkid96]

staind- 6 feet under name of song for all of yall who want to know

[sugepoola]

get on dragon's dan

[cyclingthings]

pretty ingenious. i imagine it would work great if on the same pista bike you do sprints and then longer distances

[upcycle]

Nice!

[MyNameLittleD]

what is this song called

[lilrebelkid96]

staind-6 feet under

[huckbeduck]

nope it is Creed

[dushbag38]

nice vid

[jonaitis000]

very nice idea. i'd like to test it on my bike, because i love speed :)

[ZenonDorinPower]

Yes this is a good idea but try to make the same thing you did for piston engines,there's a lot of wasted thrust on bike too...