Meet Stringbike – The Bike With No Chain

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Stringbike is pioneering in inventing a revolutionary way of getting bikes into motion, completely doing away with conventional chains, derailleurs, gear shift mechanisms and related parts. The heart and soul of Stringbikes uses a uniquely innovative technology: strong, durable and extremely flexible ropes and an accompanying drive-train.

image/text credit: Stringbike

Similar ropes are used in fitness training to lift weights and at heavy-duty sailing equipment.The Stringbike is a bicycle that uses a rope and pulley drive system instead of a traditional bicycle chain and sprockets.

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                             image/text credit: Stringbike

It uses two Dyneema ropes attached to pulleys attached to swinging lever and cam mechanisms, one on each side of the bike. These mechanisms replace the round sprockets found on chain-driven bikes.

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Unlike some traditional 10-speed gears using a derailleur, there is no slippage when changing gear ratios.The Stringbike uses a 19 gear ratio system with no duplicates and a total gear range of 3.5 to 1.via(wikipedia)

The transmission ratio can be changed with a shifting knob located on the right-side handle grip. Gear ratios can be changed even when the bicycle is almost stationary.Hungarian designers from the manufacturing company Schwinn Csepel Zrt, unveiled the bicycle in 2010 in Padova, Italy.

VIAStringbike
SOURCEstringbike
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