Hi Olaf, I also have the idea of a bb in the hub of the front wheel and I am thinking about a gear solution without chain. But before I put too much effort in brain storming I will build a wodden prototype in winter without bb, just two pedals to put the feet on it. And than I want to roll down a smoothly hill to find out how the steering feels like. Greetings Jürgen M. ============================================================ This is the Python Mailinglist at freelists.org Listmaster: Juergen Mages jmages@xxxxxx ============================================================