Jürgen Mages wrote: > On 02.03.2007 14:22, dirk.bonne@xxxxxxx wrote: >> I wonder if there is a simulation tool that would be able to calculate >> this things. > > Hello Dirk, > > I use a physics engine (e.g. Newton) for simulation. See this video > for the demonstration of wheel flop and self centering: > > http://www.youtube.com/watch?v=gf47CX4S5Do Cool! Looks very simple to play with. I had heard from the newton thing already before, and it seems more rewarding then trying to come up with the formulas by hand. In the model it could be better to do the rear part not as trike wheels but instead to fix to the ground over a joint (scharnier) located where normally the rear wheel hub is. That way the bike would not hop around like a mad bull, though the arena scenery is quite fitting for that. I have downloaded the SDK for newton, as it should be possible to feed the model programmatically and to extract graph material from that. But I am not sure how much I will be able to play with it. At the moment I am very busy with my job. :-( best regards Dirk ============================================================ This is the Python Mailinglist //www.freelists.org/list/python Listmaster: Jürgen Mages jmages@xxxxxx To unsubscribe send an empty mail to python-request@xxxxxxxxxxxxx with 'unsubscribe' in the subject field. ============================================================