According to Chris at Tokamak directly connected bodies shouldn't collide, but I'm starting to think, maybe they do in the latest release.
If that is the case, twitching will occur if two bodies are connected in such a way that they always intersect and the joint prevents them from separating.
There is a function for enabling/disabling collision between DirectlyConnected bodies in the latest release of Tokamak, but I never got it to work.
But anyway I think it might be good practice to keep joint bodies separated/nonpenetrating, at least when setting them up.
[Edit...]
I remember now that Wolf(from the DB-forums) told me that he got strange results throughout the whole simulation if bodies were penetrating at the first simulation step.
Might be worth checking out.
If that is the case, twitching will occur if two bodies are connected in such a way that they always intersect and the joint prevents them from separating.
There is a function for enabling/disabling collision between DirectlyConnected bodies in the latest release of Tokamak, but I never got it to work.
But anyway I think it might be good practice to keep joint bodies separated/nonpenetrating, at least when setting them up.
[Edit...]
I remember now that Wolf(from the DB-forums) told me that he got strange results throughout the whole simulation if bodies were penetrating at the first simulation step.
Might be worth checking out.