For my mechanical engineering design class, I just came up with a hub that you can push a button on say your handlebars and it will convert between fixed and being able to coast while riding. I still have to come up with a safety feature that stops someone from clicking back into fixed when they are coasting unless they are pedaling with adequate cadence to match the wheel speed.
I have to prove there is a market for this hub to my professors. You think it would sell? Anyone know if there was any interest for this kind of product?
Thanks, I apologize to everyone for the sudden flurry in new threads from me.