[ODE] Problem with hinge and hinge2 joints

[Nate W]

On Sat, 2 Mar 2002, Adam Rotaru wrote:

> --- Nate W <coding@natew.com> wrote:
> > I'm glad to see that Ron's problem is solved, but
> > now I'm left wondering... why did a high CFM cause the car to
> > tilt?  
> 
> The short answer:
> The higher the CFM, the softer the constraint. The 0.1 CFM caused a
> soft suspension, too weak for this particular case (considering
> gravity, mass of the car, timestep, etc).  Imagine a car with a *very*
> weak fron suspension spring, which can sink to negative lengths too:
> the mass of the car will compressed the spring considerably. And if
> you don't have any spring in the back (not a luxury edition), the
> front of the car will be lower.

Maybe that's the key thing... I had assumed that the CFM was the same for
all of the joints in the car.  If it was different in the front and rear, 
then it all makes sense.

-- 

Nate Waddoups
Redmond WA USA
http://www.natew.com