Riverman
Guru
- Location
- sur de Inglaterra
Despite the continuous advances being made in lithium-ion battery technology, many cyclists still prefer to use dynamo-powered lights on their bikes - there's no having to remember to recharge the batteries, no subsequent forgetting to put the light back on the bike, and no worrying about the batteries unexpectedly giving out mid-ride. Dynamos, however, have their own drawbacks. Friction-powered sidewall units slow the bike down and wear out the tire, while dynamo hubs must be built into the wheel, and add to the bike's revolving weight. Now, however, German inventor Dirk Strothmann has created what he claims is a better alternative - a small, no-contact, self-contained dynamo bike light.
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http://www.gizmag.com/magnic-light-contactless-dynamo/21494/Also there's a cool little video on the page demonstrating the device. Here's hoping they manage to release it eventually.