This is Version 2 of the defunct real-world Seaworld Gold Coast Corkscrew Roller Coaster, including boarding station, built with CDX Blocks Cyclone kits by Coaster Dynamix (link below) and LEGO.
The Corkscrew was Australia's first triple looping roller coaster, built by Arrow Dynamics and opened on 17 September 1982 and closed 17 July 2014.
Making loops with CDX track is simple in concept. The lack of a track spine makes it difficult in execution. But I'm working on a solution, watch this space!

https://www.coasterdynamix.com