Thanks RustyUs, I wasn't sure about width so that helps a lot. That over/under sounds neat. I've been messing around with some drawings, but it seems every time I get done I thing of something else that would be neat. And now I have the over/under in my head I'm going to have to switch it up again. How about banked turns? How high of a bank do I need? Should all the turns be banked or just a few coming into a straight away for more speed at exit? So far it's just me into the hobby but I think once I get a track built I will be able to recruit more enthusiasts.