My first effort at a bike light involved a 12V 7Ah "brick" battery, a 20W Halogen globe, and a 50mm project box, all from Dick Smith
, as well as assorted odds and sods I had lying around. I subsequently
found that many of these items were available considerably cheaper at either
Oatley Electronics .
Disturbingly it wasn't a complete failure, although a slow ride down the
Oaks Firetrail convinced me more reliable switching than the old "unplug
the wires" routine was required. Rewiring along the trail gets to be a major
After adding features such as a real switch, and some stress relieving
on the wires so they wouldn't pull out in crashes, lights V1.0 served me
well until the 2000 Mont 24Hr Mountain Bike
Race in Canberra. My last night lap was interesting after
the ceramic bulb holder cracked, leaving me with only my backup light...
Next: Version 2
If you want to abuse me: