I need to hinge 49 triangles of different orientation, so that they go from their position to a hanging position. Right now the hinge joint is at the centroid, however that will change, I'm going to push it farther back on the piece. That I can do, but I have no idea how to hinge the objects. I've attached my model.
This does sound like something that might be possible in Kangaroo, but I'm not sure I understand your setup.
If your triangles are hung from a single point which isn't the centre of mass, surely they will just rotate so the centre of mass is directly below the support point.