Lighweight Touring Bike

you after a dynamo hub? if you want to go cheaper than a SON, 3N80 for sale x

no disc ... but thanks

also the son is lightweight, looks nicer and is german built ;)

alternatively you could make one yourself . It will be much, much cheaper (under £10 ish) and will do exactly the same as others, this guy put it in a handlebar. http://howdy.wordpress.com/2010/09/27/diy-hub-dynamo-usb-charger-inside-handlebar/

nice idea, but I'd rather have a proper system than frying my electronic gadgets with some amateurly (by me) built device.