frank's blog

STRINGBIKE® wires and pulleys–no greasy chains

Posted in design by aldorf on September 22, 2010

www.stringbike.com

Developed at bike-maker Schwinn Csepel Ltd in Hungaria. The bicycle design utilizes wires and pulleys rather than greasy chains to get you around.

The “Stringbike” uses two steel cables attached to pulleys, which move on swinging kidney-shaped discs as you pedal. The discs replace a traditional round gear system, and you can install different discs depending on your needs, according to the Web site Hungarian Ambiance.

The position of the pedals determines the position of the discs, so that they swing in opposition — one is always pulling the bike forward, and the other lags behind. This allows a continuous transmission change, which could help a rider navigate winding streets, because you can more easily control the transmission without having to shift gears.

more about the Stringbike here.

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