Easily installed and removed, easily transferred to other bikes, easy to adjust up/down while riding, lightweight, and inexpensive.
Useful to light the road close-in, or to be seen by others at dawn or dusk, or to use as a backup for your main night lighting system.
Acknowledgement: This design was totally inspired by the sleek and sexy Dinotte 200 lighting system http://www.dinottelighting.com
Step 1: Parts and tools
Flashight, 9-LED, 3xAAA, on/off pushbutton on rear, 1" (25mm) diameter (purchased at a home improvement warehouse on Black Friday for $1.66 including batteries)
Polyethylene pipe to match diameter of flashlight, 1" dia, thinwall, 160psi (scrap from another project, originally purchased from home improvement warehouse in giant coil)
Safety glasses and sharp utility knife. (bandsaw with fine blade optional)