Swapping your car for a bike can go a long way toward shrinking your carbon footprint (and your waistline). But for most inexperienced urban commuters, staying safe while riding is a big concern. Helmets, mirrors and bike lights help riders remain visible, as well as street legal, while traveling to and fro.
Traditional bike lights use batteries or friction to generate the energy necessary for nighttime illumination. The only problem is that batteries fade and die (and are also bulky), and friction-based lights create unnecessary drag while failing to produce a steady beam of light. Magnic Light, a product seeking funding through Kickstarter, proves that neither drawback is necessary for safe biking.
According to its project lead, Dirk Strothmann, the Magnic Light is the world’s first compact contactless bicycle dynamo: a new invention, that if successfully funded and brought to market, has the potential to revolutionize the bicycle illumination industry. It’s true that there are other magnetic dynamos on the market, but they require riders to attach magnets to their wheels and don’t produce constant bright light. The Magnic Light dynamo claims to eliminate this need for wheel modification and produces enough energy for a brilliant light while exceeding the efficiency of hub dynamos by a wide margin.
And just how does the Magnic Light achieve this feat? Relative movements of magnets (in the light) and nearby conductive material (in your metallic wheel rim) induce eddy currents in the conductive material. These eddy currents have their own magnetic fields which are absorbed by the Magnic Light generator kernel, producing electric energy to power the light’s CREE XM-L T6 LED bulbs. According to a review on SlowTwitch, the Magnic Light mounts onto most any side pull brake, but an adapter is also available for frames with cantilever brakes.