At 12:35 AM 8/20/2005, you wrote: >The calculations made by Ray and Dirk are a big progress towards the >evaluation of stabilty factors in the python frame geometry. But the >ultimate solution is still not found (and I guess it never will be ;-) I think that the "solution" would require modeling the reflexive response and natural damping action of human bodies; the python itself cannot be made self-stable. However, as everyone here seems to agree, it can be made easier to control (minimizing necessary input). As others pointed out, making a unicycle taller makes it "more stable" and easier, but it can never be truly stable. In 100 years of effort, no one has ever published a complete physical description of the motion of hinged two-wheeled vehicles. There is a commercial package I saw that can dynamically model almost all of the important aspects of motorcycles. It is done with a package like ODE http://ode.org/ http://ode.org/slides/igc02/s19.html Ray ============================================================ This is the Python Mailinglist at freelists.org Listmaster: Jürgen Mages jmages@xxxxxx To unsubscribe send an empty mail to python-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field. ============================================================