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Cake day: August 2nd, 2023

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  • Watched it. The video is 12 years old, and the article I shared is 8yrs old. I am tempted to do the calculations myself with current numbers, but I am excelled out for the day.

    I was showing my 3yo how to run a DOE with his hotwheels track and the cars that work best current tests are on mass. The favorite mass is 29-32g/car to complete the track. The range is 10g-43g/ car. Below those masses, they fly off the track most of the time. Above those masses, they fail around 1st to 2nd loop.

    Still have about 10 cars to test.Next steps measure wheel base, length, thickest section, car height, and running in reverse vs forward. Finally time trials.