What are the main differences between the penny farthing the safety bicycle and the modern bicycle?

The penny farthing had no gearing between the pedals and the front/drive wheel, so the front/drive wheel had to be made really big to get any speed out of the bike. This made the bike prone to toppling forward while braking The safety bike had a chain between the pedals and the rear/drive wheel. By having a bigger sprocket by the pedals and a smaller at the rear wheel you could get the bike up to speed while still retaining a more practical wheel size The modern "utility" bike is in principal very similar to the safety bike.It is most likely lighter, has better brakes and the ability to freewheel; it might have any number of gears, but the basics still remain Today we have all manners of specialized bikes, full suspension MTBs, flimsy road bikes and everything in-between.

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