Originally Posted by
noisebeam
I've yet to find a bike headlight with beam pattern that allows for under bar mounting.
By stacking 2 threadless stems , you can add a piece of tubing in the lower one, and put a handle bar battery headlight on it
right side up but still under the handlebars..
there are specialty dynamo headlights made to be bolted on front racks under the big bags Brevet riders love, Designed to be fitted upside down....