Thanks Olaf, that's inspiring.the older ones might also remember a contraption built by the Australian Robert Waryszak (see attached photo).
Jürgen. On 17.02.2011 19:53, Olaf Johansson wrote:
Here is another ... well it's not a geared hub exactly ... only one gear, but if you don't mind pushing the cranks hard when going from still stand you can actually design it to have the ratio of your choice. http://www.unicyclist.com/forums/showthread.php?t=36273 http://www.unicyclist.com/forums/showthread.php?t=52571 Olaf