Inversions and common elements
Loops, corkscrews, and immelmans are building blocks. Knowing the names helps you predict the ride feel.
An inversion is any element where riders pass upside down. Parks and manufacturers name elements for how the train moves:
- Loop — a vertical circle, often entered with speed from a hill or launch.
- Corkscrew — a twisted spiral; can feel snappy and lateral compared to a smooth loop.
- Immelman — half loop up, then a half twist to exit upright (common on wing and jet-coaster layouts).
- Zero-g roll — a slow roll designed for hangtime rather than whip.
Launched elements use motors or hydraulics instead of (or in addition to) a lift hill. Dive coasters use a holding mechanism on a vertical face before releasing into the drop.
When a coaster page lists elements, read it as a sequence of forces — positive G in drops, lateral G in turns, and brief negatives in airtime hills. That matters more than the inversion count alone.