Hi guys, I made a rail with an spline, and a minecart that follow it, it work but I wold like that the behavior is less guided and more physic: if the rail is downhill the cart go faster, when the rail is uphill the cart slows down. Any tips for doing something like that? Thanks a lot 
Hi man , You have to get the Actor “Minecart” rotation or direction and depending on that, set the speed.