Gzumwatt’s 3d printed windup car

This is the start of a 3d print project where I look at energy storage in a printed plastic spring. The toy wind up car that I am working on was designed by Greg Gzumwatt and Grandad did a great video on building it.
Here is the Gzumwatt 3d printed car that I am working on: https://www.youtube.com/watch?v=_w1LrRPG0Uo&t=0s
Here is the build info with the stl print files: https://www.myminifactory.com/object/3d-print-pla-spring-motor-rolling-chassis-31127
Here is Grandad’s build video on this device: https://www.youtube.com/watch?v=ADGIAtN9zko&t=21s

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