The system that makes Driven a unique product was developed by Ceramicspeed in collaboration with the Department of Mechanical Engineering of the University of Colorado. In the absence of the chain, the drive is via a super-light shaft equipped at each end with a series of ceramic bearings. The shaft is mounted on the front toothed wheel and, at the rear, on a system of thirteen gears (leading to thirteen different speeds) arranged on a flat surface, which replace the classic sprockets of traditional bikes. Tests carried out by the company have shown a reduction in friction of 49% compared to the best chain and derailleur system currently on the market and an overall efficiency practically doubled. The only “defect” – if we can talk about a defect – is the price. The cheapest chainless bicycle model currently available in the Ceramicspeed catalogue is on sale at a price of just under $2000: saying goodbye to the old chain is still a luxury for a few!
First Chainless bicycle (Denmark)
Fastest
Efficient
Idea
Imagination
30 Comments
why the editing is so terrible, barely can hear the speech cause of the music
Mmmmmmmmmm,
Wish they can mass produce and with cheapest price..
This is NOT actually the first chainless bicycle ..but still pretty cool
The major problem isn't only the friction, but the resulting vector of the transfering forces from one axis to another, every degree of force transmission will cause an exponential difference and loses, the most simple way to ilustrate that is imagine a car doing a tight hairpin turn, in which speed you think that the forces will push out of the track?
Freakin cool
Chains are not my favorite about bikes I got caught in bike when I was a kid
Interesting. Still it's proven since long time that shaft drive is several percent less efficient than chain.
I like the idea for practical use but it will not be a winner in a race.
And as several other have mentioned: it may work for continious run at even speed, but for sprints and standing pedalling it's too big risk for break.
This is not the first danish bike without chain. I have been driving first a danish Viva-bike and later a Biomega-bike using cardan/shaft-drive.Thiswas introducedmany years ago.I had mine for approx.15 years.They work very well, but are heavyer compared to chains, and far to heavy for racing. But they require very little maintenance. I still have my Biomega, and am very happy with it.
Pls give it to me!!!!~~~^^*
Reminds me of a blinder
If they got rid of the stupid music drowning out the talking, or at least had it at a lower volume, this would be better. Guessing they needed the drama to distract from the fact that many alternatives have been tried and the chain continues to rule.
I would keep the cover on it and pack that sucker with marine grease back there. Those bearings could go bad easily if it is dry all the time.
Two music track overlapping
Este sistema de transmision sería ideal para acompañar a ebikes con motor de eje de pedalier que tantos problemas dan con las alineaciones de cadenas tradicionales o incluso para usarlos en ebikes con motor en rueda trasera puesto que no abultan tanto como unos tradicionales se podrian montar en cuadros con horquillas traseras mas estrechas o clasicas de carretera de anchos de apenas 13cm y tener 10 o 12 velocidades junto al motor.
Most of the videos hide the sound of the drivetrain…from what little I CAN hear, it seems incredibly loud. That's gonna be really awkward.
What? Are they talking? Can't hear over the BLARING MUSIC.
cant hear anything to laund music
Put the shifting system at front rather on the back, like gearbox system, and change the chain with axle or belt, it's more practical in my opinion
Why not have a clutch system instead? For shifting gears. Hell, my bike has a gearbox shifting system inside the wheel with no extra gears outside. The wheel has one gear and the crank has one gear. But my bike speed has 3 gears. Funny right?
I sorta hoped i would see a clutch solution.
this is NOT the first chainless bike.
bikes with shafts have been around always.
and there are other bikes with belts, who also happen to be chainless.
Would it be usable in a mtb?
First was in Germany in 1916(and even earlier basically)… So You lie. It may be at least inlofrmative if such damn bastard waste at least 5 min's to googles the topic. What a shame.
How strong is it?
So where tf is it? Why don't you go and ask and come back with real answers?
Them tooth will cut your legs open like whuuut better not hit that or hit anyone with that rear end.
Does it work on rugged terrain?
Horrible music
Expensive…