I have been trying for two days to get this thing to work so any help would be greatly appreciated. I have modeled a crankshaft,connecting rods and pistons for a V-8 engine. All piviot points are centerd where there suppose to be. Ihave tried all sorts of parenting chains and constraints nothing seems to work. I want the crankshaft to rotate with the connecting rod following and the piston going up and down as a real engine does. Again any help would be much appreciated.