well...heres the first post...enjoy..
Most good rechargeable Bike Lights that put off a good deal of light (200 to 600 lumen) cost a ton of money 150 to 500 bucks. I took my really expensive light apart and found that its just a bulb you can buy anywhere for $ 4.00 and some rechargeable batteries. So heres a CHEAP way to build your own with part that you can get from Home Depot (mostly) This is a no frills light. I didnt put a switch on it. If you want to turn it off unplug it...I like it cuz you can mount it under your bars on a city rider and no one takes it cuz it looks like junk...lol
First you need a body. I found that a Trap adapter and a PVC female cap from HD plumbing dept works good.
Trap adapter ABS-DWV 1 1/2 x 1 1/4 $1.14
Female Cap VPVC Sch 40 1 1/4 (threaded)$.78
Next I use a MR16 bulb its the kind made for track lighting. I use 12 volt only and I like a 10, 15, or 20 watt bulb. You can get the 20 watt from HD for 4.95 the lower watts bulbs you need to get online from a lightbulb dot com place or a specialty light bulb store in your area. You will also need a MR16 socket that you get from a specialty place for $2.00 and a Conduit Hanger and 1/4 inch thumb screw to replace the screw that comes on the hanger (to make it easy to adjust or leave the screw on and crank it down and forget about it ) and a nut and bolt to hold it to the Body
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
Next a No Hub Coupling from the plumbing dept to make a tight sleve to hold the light bulb in place and make it water (tight??). You are gonna pull the rubber part out and cut it in half but leaving the middle rim on one side then trim it to abot 3/4" to an inch total width. (I hope that makes sence once you start cutting it)
No Hub Coupling 1 1/2" to 1 1/2"
Kinda together showing the rubber seal holding the bulb
Drill a little hole and tighten the Hanger on the Hub
I like to use an RCA cable. Cut it about 3" from one end. Drill another small hole in the cap or body and stick the short piece through and soider it to the socket.
RCA male/female end cable $3 Radio Shack
You need to find at Radio Shack or a specalty electronics supply a holder for 10 AA batteries. Solder the other end of the RCA cable to it and ....
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.... scootmikey at Yahoo dot com
Energizer 4-Pack AA NiMH Rechargeable $8.97HD
Rayovac Universal Charger $19.98 HD
And you should end up with this...ish