How to make high power bicycle headlights with materials from your local home center.
This is an article from a few years back that was up at Bike-Recumbent.com, I'm consolidating everything from there over to here.
Nearly five years after I built them I am still using these headlights with the original bulbs. The 50 watt beam is awesome, oncoming cars always dim their brights when I flash it and it provides plenty of light for the 45 MPH downhill on my way home from work.
- Jake