Could something like a bicycle be developped in the Middle Ages? And what would be the consequences?
First of all, a means of transport as fast as a bike would mean a huge increase in economic opportunities (i.e. detail trade) for the humble man.
Of course, there would be no rubber tyres, just wooden wheels, perhaps with a iron hoop around (Most blacksmiths would be able to provide those, as one could easily use the same type as used for barrels). Your back won't love that, but for most people, life is harder without transport ...
Second, somewhat decent ways to cycle along. But at least in relatively flat areas, there must have been plenty of paths with firm ground due to frequent (foot) usage.
OK, pedals, chain, and cogwheels depend on some mechanical engineering.
But what about
Draisine type of device?
That would be of a lot of help, too. Moreover, I am phantasizing about two short cross-bars on the front wheel where you can pedal "direcltly", without gear and transmission. Also no walk in the park, but it might still solve many people's problems.
So what do you think? Would that be possible?
And why didn't it happen?