> Incandescent lights used substantial chunks of your pedaling power. Not solely caused by the lights as they are about ~5W anyway (edit: the old one in my bo

> Incandescent lights used substantial chunks of your pedaling power. Not solely caused by the lights as they are about ~5W anyway (edit: the old one in my box of bike parts says 6V/3W on the metal). The wheel dynamo's are insanely inefficient and get hot everywhere which were the primary ones used with most incandecant lights.