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In conjunction with the University of Colorado’s Mechanical Engineering Department, bicycle parts manufacturer CeramicSpeed has launched.

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Chainless bicycle – Wikipedia

It looks to me that the smaller rear gears will be introducing some sliding friction as the diameter decreases. To produce a bicycle with no chain nor derailleur. The Mundaneum is more than an antiquated indexing system. Not an innovative design… Actually if the dreamer designer focused more on research rather than trying to create something new would know that this concept has been proposed and failed.

How and where do you store your bike? At this year’s Eurobike show they unveiled Drivena speed “prototype” “concept bike” would be more accurate, as the thing doesn’t actually work that uses bearings and a wicked-looking ring cog that you don’t want to slam your shin into:. Admittedly, it’s not really bucycle any major problems with the current way chain drive systems work on a bicycle — having to constantly clean and lubricate — but dang, it looks cool.

I’ve read and agree to the privacy policy. Very clever thinking — but I as an engineer strongly doubt that the transmission to the whell will work in reality.

However, the single speed, as far as I could tell, had the bearings misaligned to the cassette. Don’t have an account? A glimpse of the suburban grotesque, featuring Russian mobsters, Fox News rage addicts, a caged man in a sex dungeon and Dick Cheney.


Truth Pedaling a bicycles has always converted muscular movement to radial motion, and such a conversion always has some loss. Cars have been using this type of transmission ever since. Did you happen to see both prototypes? I hope it works and becomes a product, but I am not holding my breath. Enter a caption optional. By creating a Core77 account you confirm that you accept the Terms of Use.

CeramicSpeed’s Bearing-Based Chainless Bicycle System

Keep me signed in Cancel. That prototype shows massive gear steps like on a mountain bike cluster with a x1. What’s with the battery cell in the bicyxle shaft? Please enter your email and we will send an email to reset your password.

Professional skydiver Michelle Nirumandrad latches canvases to her body and makes “art” through “gestural abstraction. That is bicycel overload issue.

Naysayers and skeptics will say the cost, plus the additional weight of whatever housing system would be required to keep mud out, would nullify the efficiency of the design. He filmed his journey and compressed those 80 days down into 80 seconds:.

Could the axle of the drive shaft be the chain stay? Nintendo’s camera accessory is bicyclr capable of taking dithered grayscale pictures, but with Photoshop, some colored gels and basic photographic know-how, you can see what a color-capable version of the tool might’ve looked like. Pickles are an integral staple of Turkish cuisine, and a glass of pickle juice is famed as a quick, tasty and natural cure for even the fiercest of headaches.


Already have an chaibless Gives a whole new meaning to the term Road Rash. There was one at their booth single speed and another in the awards section of the show with 13 chaihless. A roundup of the most interesting, thought-provoking and surprising questions that our favorite columnists addressed in recent days.

Design Jobs Firms Awards Conference e. It’s a safe for all purposes — you can store anything in there, from your family heirlooms chainleds your lunch. TECH predictions for 6 articles. If I did, I think I’d go with an overhead bike hoist; as narrow as bicycles are, they seem to take up a disproportionate amount of floor.

Would like to try this on our cross country bike and help test in practice and race conditions. I’m a Citibike user so have never had to deal with storage.

They claim, that their solution improves efficiency over the standard chain solution, not that it has no inefficiencies.

I love being able to run quick errands while getting a little exercise; at the supermarket I buy only a few things at a time and go several times a. It’s an ahead-of-its-time testament to the power of information. So I’d say we learn what we can from this, and be grateful that it’s not our money.