Originally Posted by
bloodfont
No, it's just a double crank and a chain guide (pulley wheel), nothing else requried. It's like your 2 cog setup but without having to remove the wheel to switch between them, no extra tools, no turning screws, no derailleurs, no spliting the chain
So to switch "gears" you get off the bike and pull on the chain with your fingers to lift it off a setting to change the chain location from one crank (sprocket size) in the front to the other crank (sprocket size) in the front???