TTD03 wrote:
^ They did with Pipe Scream!
I assume Pipe Scream is the Intamin Half Pipe? Then Yes, it's a coaster imo:
It has coaster track, a short launch section at the bottom of the pipe. And the rest is all gravity doing it's job. Pretty much what a coaster needs to do.
With a Disc-O or a Larson loop on the other hand. They are completely powered during any time of their course. The loop is a car mounted on a full circuit "chain" which is propelled by wheels. Due that "chain" it keeps contact with the wheels all the time. Making it even possible to stop the car at 90??????. An Intamin 1st Generation Freefall would be more coaster than that.