Lighting question
 

Is there an easy way to update an old bullet dynamo light so that it is brighter? I'm kind of hoping someone has a link to LEDs that fit in the old flashlight bulb spot or something. If not, how hard is the hard way to update an old bullet front light?

Thanks

http://farm3.static.flickr.com/2486/...f2531d30b9.jpg
DSC01845

I think this link came up recently in this or some other forum :

http://www.superbrightleds.com

Thanks! I think I remember reading this before but I couldn't find it again. Now I just have to figure out which one I need.

Dynamos generate AC current so you need to rectify it to DC before you can power the LED. You will probably also need to condition the DC current with a capacitor and regulate the voltage since a bike dynamo can generate a lot of voltage at times. I measured up to 41 volts from a bottle dynamo. Look in the electronics and lighting forum; there is a lot of good advice and circuit diagrams you can use.

And this project is now out side my skill set.... doh.

I wish someone sold a kit.....

http://www.home.earthlink.net/~steinborn/gentlemancyclistmerchandise.htm

Sells LED bulbs for vintage dynamo lighting. The bulbs are rated enough to deal with the voltage swings from the AC system without a rectifier. Though at low speeds the lights will flicker.