I sure wouldn’t have thought of it. But putting a disc on the crank of a fixed gear bike is, for the most part, just as good as putting it on the back wheel. At least, that was the idea that SyCip Designs bikes had on display at the North American Handmade Bicycle Show.
While the astute among you will note that this setup will do nothing if your chain breaks, that is no different than the forces at play on bikes with only a track hub.
According to quotes, “The crank will never turn fast enough under braking to heat the rotor…” This makes sense if you think about the gear ratios involved, and addressed one of my early concerns about this setup.
If nothing else, it is creative thinking. And that is innovation.