Interesting. Not much, but its a start. If you don't mind, here's some advice. don't support it until after the trackwork is done to avoid having to redo supports etc. also, unless you're making the flanges by hand, don't flange the supports until after you finish all of them. I look forward to seeing how this progresses.
Head Moderator Director, Structural Engineer - PEAK Amusements Site Contest Judge (Supporting) Chatroom Admin
Your drop's shaping is off. If you look at both of the pictures above, the drops radiuses start very tight, and then they get larger untill the drop's pull-up.
Keep in mind this is being completed in the editor. (I'm no good with newton i couldn't even make the first turn into the lift hill you see on newton.) I will get it fixed though.