Details: Cree XP-G first gen R2 bin triple with a Cree XRE (forgot what bin it was). Martin dynamo circuit inside the steerer tube. Shimano 3D70 dynamo. 600-700 lumens setup at 20km/h.

The entire setup.


The head.


The switch.




Been using this setup for several years now, rain or shine (you probably noticed it by the rusted out screw on the switch). Works great. Haven't seen the need to upgrade the leds yet, but will probably do that when the new ones come out in the next few years.