Originally Posted by
noglider
Wow, that's a lot of light to get out of a dynamo. Good news. If I read that thread, I had forgotten about it. Thanks.
The maker of that light is just commercializing a commonly used circuitry
Dynamo LED Light Systems for Bicycles (electronic circuits) with a few tweaks, and using off-the-shelf parts.
Light On! has two LEDs. DIYers (me included) made 6 LEDs setups, 1000+ lumen is possible from dynamo power. I have two sets of them 6 LED setups. <<< This is why I don't bother with anything from B&M.