How does a Spiral Escalator work?

A few clarifications and corrections to the video: • Terminology (~9:00): what I call the "wheel"/"bar" is more precisely the axle/roller. • Cost: because each spiral escalator is custom-built for its specific site — and is far more complex to install than a standard escalator — the installed cost can run roughly 10–20× that of a regular linear escalator, depending on the project. Free to watch on Dr.Doc Kids.

Courtesy of Jared Owen on YouTube. Watch on YouTube ↗

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