ok, so I've been thinking about these for a while. They are an old idea that untill recently haven't been used. Black Cat Bikes, I feel, can take credit for their rebirth. Salsa probably would take credit but I think, not so fast. I decided to meld some ideas. First, I liked Salsa's aluminum parts so decided to utilize them. If you fuck up and crush or maim them, bingo, QBP has them. Problem solved. Second, belt drive Do's are hard to come by in a functional manner ( stupid horizontal sliders aren't disc friendly). Third, no threaded parts on the frame = no failures. Let me know what you think.