Called the StringBike, this innovative bicycle “has a new driving system using steel wires instead of chains, which has the following main units: pedal, eccentric discs, the swinging unit, and gear changer.” Videos after the break. Click here for more pictures.

The kidney discs serve the same function as a traditional circle-shaped gear, although in the Stringbike’s case different sized and shaped discs can be installed that change performance.

[via GizmodoHungrianambiance]