It Followed Me Home... : Review and testing the Magnic Light
An Update Post showing development in February:
Magnic Light: Get New Energy! by Dirk Strothmann » Additional Adapter & changes ? Kickstarter
Go earlier into updates to see design development. Not cheap, but no generator hub needed.
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: Interesting light technology