In the 1870's came a bike called a penny- Farthing.
It consisted of a huge front wheel, 1.5 meters tall,
and a very small back wheel. The advantage of this
model was that it could travel a greater distance with
a single turn of the pedals. But because it the wheels
were so tall, the bicycle was unstable and many people
wouldn't try it.
In 1885, J. K. Starley, an English bicycle manufacturer, producted the first commercially successful bicycle. It was much lower than the penny-Farthing with two wheels of the equal size, making the bicycle much more stable. It was the first bicycle that incorporated the design and parts of today's bike. Later, the iron tires were replaced with solid rubber tires and patented name "bicycle" was given to it. Years later, with the coming of the industrial revolution, the bicycle industry lost ground and almost disappeared. The 1900's brought the invention of cars, and the bike sales dropped dramastically. But since the 1960 and 1970's, air pollution, and the need for physical fitness has prompted...