Howdy all. I don't have the know-how in creating tracks so am asking for a few pointers. Firstly, I'm interested in making a 'test track' - simply some bits of tarmac of various geometries to do some physics testing. Not interested in scenery, gravel traps etc. A nice big skid pan, long runway and a few other things are all I'm interested in. Particularly, I would like a long straight strip of tarmac that gradually spirals so you can drive upside down (provided the car is capable of it). I'm not sure if this is possible in rFactor though? If not, what is the maximum banking angle? The higher the better. Not sure if something already exists, if so, would appreciate to be pointed in the direction.