[python] Re: Self Centering vs. Wheel Flop

I will be trying to build a homemade python soon I,m getting some ideas from pics i,v saved some of whice i have included to explain my plans.I have some key points that are absolute:1 all aluminum-2 all bolt together useing AN grade hardware-3-16"or 20" wheels.Zero or very minimum welding required maybe just the headtupe ? does anyone know anyone who has used a streering headset for the pivot? ----- Original Message ----- From: "Jürgen Mages" <jmages@xxxxxx> 
To: <python@xxxxxxxxxxxxx>
Sent: Thursday, March 22, 2007 3:59 AM
Subject: [python] Re: Self Centering vs. Wheel Flop



Hej Dirk,


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 will make a new model including yours and Stephan's ideas. Sounds
good.

BTW through the model I realised that it is not the weight of the whole
front part that favors the wheel flop, but only the weight of the part
that is NOT rising when the wheel turns. Roughly this is everything in
front of the line [axle - contact patch].


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. :-(


There is also ODE (Open Dynamics Engine) which is an open source
physics engine, but I have no experience with that. I also tried
the Newton SDK, but gave up due to lack of time and C++ skills.

Groetjes,
Jürgen.
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