Hybrid City Bike Beautifies City Streets


In case you couldn't tell by looking it over, this here is just a concept bike-- a grossly impractical one at that. Nothing about the bike looks particularly safe or functional. Besides the fact that there are at least four different joints that look like they'd crack under the slightest amount of force, the way the frame so closely wraps around the tires is sure to cause rubbing in a hurry--a little bit of a untrue tire and you'd have all kinds of problems. And let's not even get started on the spokeless rims. 

Basically, this bike is going for looks and wow factor over practicality and usability--if there are any doubts, spend a little time looking for the brakes. In that way, it's a big success. The bike definitely takes the familiar and makes something new and interesting. As much as we'd avoid riding it, we love to look it over.

The design, brought to us by Peter Dudas, envisions a carbon-based frame sprayed down in understated matte black. Near as we can tell, the bike uses some kind of an internal gearing mechanism to keep the wheels moving. 

So long as you can forgive the gaping engineering problems, of which there are many, this bike is an interesting concept. It would make a beautiful decoration for anyone that had several thousand dollars (carbon ain't cheap) to spend on a non-functional accent bike. 

Via: Yanko 

Feb 17, 2010
by devvon

cool bike

very simple and cool i c


Feb 23, 2010
by Anonymous

brakes etc

A wheel being out of true would not be that big a problem--there is fairly small contact area and the bearings would barely be able to detect what would amount to a minute angular change. This is actually an advantage of a rim-born wheel vs a hub-born wheel. Anyone who has run a curved piece of wood parallel to the fence on a table saw understands this principle. As far brakes go--if there is a drive hidden in the rear enclosure why couldn't there be a brake hidden in the front enclosure? The handle bars are splayed, and forward pressure could activate a front brake. There could also be coaster brakes on the rear wheel. Gearing however would require more bulk than is shown in the photos.

They've built spokeless, hubless wheels before--and yes, they are not practical--especially in an urban environment with potholes. The stresses on the bearing surfaces are too great. The cantilevered seat post has been used very successfully in Zipp and Softride frames. the V-joint at the bottom bracket looks way too weak, but could be made to work with a carbon gusset or open brace closing the triangle.