I decided to try recreating an Intamin Zac Spin/Ball Coaster in CATIA V5 R19 the other day. After a few hours of work this is the result. Still trying to figure out a way to dumb done the model so it isn't as heavy and take so long to load. Maybe converting to step file and then back to catpart? This model itself is based off of Kirnu (RCBD it if you're not familiar). Still working on some of the details like the track to support column connections. I pretty much used all circles and lines so I could easily pattern the track's ribs. What do you think?