Listers:
Has anyone seen or heard of a removable dynamo unit that clips onto the spokes or hub? it would be an alternative to a bottle generator or hub dynamo. Is this a vintage item or a rather new item? Any help would be appreciated. If this is off topic, please contact me off list. I'm hoping it is not and that some old French company produced and marketed such an item, like Soubitez.
Tom Martin
Oakland CA