The front left fork failed. You can see the crack in the video as he is riding. The front fork has a bending moment as well as compressive force. When the bending force was applied the concrete failed and the rebar did not.

Overall, I really liked this as an art project. I'm not sure what the artist wants to communicate with the bike, but I found it very satisfying.

How much of this can you just chalk up to using concrete and just copying the design of a normal bike? This is a fun art project but doesn't seem like much more.

Sorry for being negative about an art project. I think I was projecting my own biases, but it sounded like an engineering project and then I didn't learn anything.

I'd like to think they're reminding us why we don't make bikes out of concrete (but we can!).

> I'm not sure what the artist wants to communicate with the bike

"I paid a lot of money for an architecture degree I'm not using."