........................NEWS FLASH.. I have added an LED for better energy management See the last step for LED upgrade......................................
I have another bike light http://www.instructables.com/ex/i/333304260366102985CB001143E7E506/
Step 1: First you need a body. I found that a Trap adapter and a PVC female cap from HD plumbing dept works good.
Female Cap VPVC Sch 40 1 1/4 (threaded)$.78
Step 2: I use a MR16 bulb its the kind made for track lighting
Conduit Hanger w/speed thread size #0 3/8-1/2 5pk $1.90 HD
MR16 Bulb 20 watt Aprox $5.00 HD
Thumb Screww 1/4 " 3pk $1.29 HD
Lock nut (nylon insert) #10-24 4pk $1.29 HD
Bolt 1 inch long #10-24 4pk $1.29 HD
MR16 Socket $2.00
Step 3: No Hub Coupling from the plumbing dept
No Hub Coupling 1 1/2" to 1 1/2"
Step 4: Kinda together showing the rubber seal holding the bulb
Step 5: Drill a little hole and tighten the Hanger on the Hub
Step 6: RCA male/female
RCA male/female end cable $3 Radio Shack
Step 7: Battery ...now this is gonna cost you a little bit
The best battery to use is a Nickel-Metal Hydride or NiMH 2500 mAh I found the Energizer from HD the best price. You need 10 cuz they are 1.2 volts each 10x1.2 = 12 volts. Put the battery pack in your underseat bag or in a water bottle. The light should work for 3 hours with a 10 watt bulb and 10 2500 mAh batteries. Or 1 1/2 hours with a 20 watt.
If you have any questions drop me a line....
10 AAbattery holder $1.00
Energizer 4-Pack AA NiMH Rechargeable $8.97HD
Energizer 4-Pack AA NiMH Rechargeable w/charger 17.95
Step 8: Put it all together and...
I got this bike water bottle battery pack that is 5 mah with the quick charger from batteryspace.com. They have tons of great batteries on that site.
Step 9: LED is all the news. So... I have added a simple LED upgrade
But.... There is still the DIY factor (that's why we are all on here, right?)
Here is a simple way to build a LED bike light without having to mess with any circuitry, little parts or soldering.
I just went to my local hardware store, light bulb store or online and bought a 4 Watt LED MR-16 It is rated at 300 lumens or a 5 Watt at 500 lumens and plug it in.... POOF!!! like magic your done!!!