I just changed the topic title, because the issue is came from the huge mass difference, as Esenthel said before. Somebody knows how to solve it? Because if I simple set the ragdoll bones mass to a higher value, then it starts to "ticking".

Original post:

Good night developers!

I built up my vehicle (PhysX 3 vehicle), and I have a problem. When my vehicle's wheels contacts with a ragdoll, I get strange results. The ragdoll is launching like a spaceship with speed of light and dissapear...

I didn't find any solution to ignore the collision between the wheels and the ragdoll, although I would be more happy if I could fix it without this collision ignore. Maybe somebody can help me!

Esenthel, could you confirm it, if its a bug, or did I something wrong?

This is probably related to huge difference in mass of vehicle and ragdoll. (default Vehicle mass is around 1500)

And how can I increase the mass of ragdoll bones without broke its physics? I tried to set every bone mass to 1, and my ragdoll is twitch and spinning...

just a bump

I was just thinking , is it not possible
to turn the ragdoll into a kynamatic ?
If you could do that if the ragdoll velocities
Were low (nearly stopped moving)..perhaps
vehicle wil drive over the character ? Just
a unexperimented thought...

Its working as you said, but there are other resons to increase the mass. Just imagine some boxes in the top of each other... For example the boxes mass is 1kg, and its not so realistic when a dead body falls to these boxes, and they aren't move.

Mmmm if you added impulses from the collision of
ragdoll to the boxes ?

edit: perhaps a little more damping ?

It seems the problem is solved. I had to recreate the ragdoll with higher density!

How exactly did you do that , any info for us if we find the same situation ?

You can use the Ragdoll class's "create" function!