You recommended "Primitive Technology" which I thought of as well while reading the article. It would be really neat if he did an episode on making a more complicated wheel and axle structure.

Also, I would highly recommend "The Cross Time Engineer" series as it's this same scenario but works through how he's able to apply his modern knowledge as leverage to work up from a boatman earning pennies to running the country.

1 - https://www.amazon.com/Cross-Time-Engineer-Adventures-Conrad...