Pedal-powered Japanese roller coaster

Pedal-powered Japanese roller coaster.

<video controls autoplay loop>
<source src="https://s3-us-west-1.amazonaws.com/hmt-forum/pedal_powered_japanese_roller_coaster.mp4" type="video/mp4">
Your browser does not support the video tag.
</video>

Previously:

https://www.homemadetools.net/forum/...1273#post74087
https://www.homemadetools.net/forum/...611#post139599
https://www.homemadetools.net/forum/...110#post138170
https://www.homemadetools.net/forum/...710#post136761

Pedal-powered Japanese roller coaster - GIF