[ODE] Car Physics with a couple errors

[Jon Watte (ODE)]

You probably haven't set the lo and hi stops TWICE, which is necessary 
because of an implementation issue in the joint. This is mentioned in 
the FAQ, btw.

You might also want to check out the code at 
http://www.mindcontrol.org/~hplus/carworld/ which is a working car built 
much like yours, tuned to allow maneuvering at moderately high speeds 
without flipping over.

Cheers,

                      / h+


mlist1 at binaryfortress.com wrote:
> I have created a car using a box for the chassis, 4 spheres for the wheels
> and 4 hinge2 joints to connect the wheel to the chassis.  Axis 1 is for
> steering and axis 2 is for rotation.  I have set the hi/lo stop of axis 1
> for the back wheels to 0.0, and I've messed around with the CFM parameters
> but I just can't keep the back wheels from turning.  If I'm driving in a
> straight line then I turn the front wheels and start driving in a circle,
> the back wheels start to turn as well, and I end up just spinning in a
> circle.  Is there anything I am missing?  I have tried using the AddTorque
> function to rotate the wheel, and I've tried using the Vel2 and Max2
> params to rotate it, but nothing seems to fix it.
> 
> Any thoughts would be much appreciated.
> Thanks
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