Originally Posted by
dhalbrook
So, lights in place, how bright were they? Well, Dirk Srothmann, the creator of Magnic Lights has claimed 30 lux at maximum brightness. This seems about right compared to my B&M IQ Cyo dynamo light, which is rated for 60 lux. Riding them back to back, the Magnics indeed seemed about half as bright.
These seem to be the actual brightness numbers from Magnic. If I understand this correctly, to comply with StVZO, your SON+Cyo puts out its 60 lux at all speeds above 15kph (about 9 mph). As you can see, the Magnic ramps up in brightness as speed increases - like the generator sets of yore - and doesn't output 30+ lux until the cyclist is pedaling at a speed of over 37 mph.