Well for anyone who rides trails or DH at night, you'll know that 20watt lights are pretty expensive.
A couple weeks ago I decided I really didnt want to run into anymore trees or fall off a cliff,
so I said "ehhhh, why not just make your own"... OK!
Its very easy to come up with something. Just run down to home depot and you'll come up with plenty of ideas on how to mount your light/fixture. This isnt the final product, but it'll do until I get some more free time. 20watt light @ 5-6hrs.
Everything you see came to a grand total right near $32 .
Battery - $25 w/shipping
Bulb - $5
Bulb fixture (PVC fittings) - $2
Switch - Free (off an old flashlight)
I'll get more pix out on trails...