Wind up toy car

thingiverse

Heavy-duty industrial wind-up toy car that actually works flawlessly! On a smooth surface, it will likely travel over 30 feet (our house ran out of floor; check out our YouTube video). https://www.youtube.com/watch?v=6lLlBXjwiAs Print the small gears, winder, axles, and spring at 100% infill, while printing everything else at 50%. No supports or rafts are required. I printed this on a worn-out R1 Robo that's sloppy at best, but it still works perfectly, so I imagine newer printers will have no trouble with these larger parts. Make sure to check the orientation of the print bed for proper part alignment without needing supports. The rear axle prints best when laid flat down on the print bed. All the parts should fit together smoothly; secure them with a small drop of super glue (some thought is required here). Two rubber bands are needed, one for each rear wheel, to provide traction. Update: On October 2, 2019, I added a newer version of the torsion spring and winder that allows the torsion spring to be replaced without breaking any glued joints.