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Bicycle design eliminates chain, derailleur and sprocket

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June 19, 2006

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June 20, 2006 Most childhoods would be incomplete without an incident involving lost skin and a bicycle. Indeed, given that the bicycle is the world’s favourite means of transport (more than 100 million bicycles are sold each year – double the number of cars) and they all feature a highly-efficient but potentially dangerous chain drive, we’d suspect that most people will have had an unfortunate recollection of an incident involving a de-railed chain, lost skin, grease and perhaps a destroyed garment or two. So we like the idea of a bicycle without a chain. US-based Dynacraft has introduced just such a beastie - the Dekra-D Drive bike has an internal drive shaft which offers less maintenance, greater safety and a cleaner solution than a conventional chain-driven bike by replacing the parts of the bike that cause the most problems and require the most maintenance - the chain and derailleur.

The Dekra D-Drive comfort bike retails for US$300.00.

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About the Author
Mike Hanlon Mike grew up thinking he would become a mathematician, accidentally started motorcycle racing, got a job writing road tests for a motorcycle magazine while at university, and became a writer. As a travelling photojournalist during his early career, his work was published in a dozen languages across 20+ countries. He went on to edit or manage over 50 print publications, with target audiences ranging from pensioners to plumbers, many different sports, many car and motorcycle magazines, with many more in the fields of communication - narrow subject magazines on topics such as advertising, marketing, visual communications, design, presentation and direct marketing. Then came the internet and Mike managed internet projects for Australia's largest multimedia company, Telstra.com.au (Australia's largest Telco), Seek.com.au (Australia's largest employment site), top100.com.au, hitwise.com, and a dozen other internet start-ups before founding Gizmag in 2002. Now he writes and thinks. All articles by Mike Hanlon
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