The Wheels And The Bicycle

There was an ad on the TELEVISION. The background was sometime around 4th Millennium BC. A donkey was the master. It was sitting like a king under a tree in a deep forest in the jungles of Mesopotamia. He was delighting in mints. Its Homo Erectus servant was standing nearby. The donkey tossed a mint towards him. No faster the man took the mint in his mouth, his brain started working. The mint could not enliven the donkey because it had a dull brain. Very soon the man deserted the donkey. He found out coconut breaking. He discovered making tools from stones. He made spear. He killed animals for food. He found out fire making. He made his very first innovation. He chiselled out a wheel from a piece of rock. He began playing with it. One day he discovered his old master. The next scene was of the man guiding the donkey to draw a cart rolling on stone wheels.

We are riding high up on the wheel of development with propellers, jet engines and turbines around. Nevertheless, bicycle wheels still stay the most delicately balanced mode of handling a range. The balancing act is at its best, however never ever acclaimed to be such.

The common "Security Bicycle" eased the high wheelers sometime in the 1880s. These high wheelers were extremely unsafe and accident prone.

The wheel of the security bicycle is the most important part of the entire assembly. A good pair of wheels permits the rider to move around with speed and effectiveness on smooth or rough terrain working out bends at ease.

The wheel consists of a hub at the centre, a rim on the periphery, number of spokes and a tire in some cases with an inflatable tube inside.

A bike wheel needs to bear the weight of the bicyclist, stand up to forces of paddling, acceleration, braking. It has to be similarly better on undulated in addition to slippery roadways. The needed support and strength is offered by the spokes. Tangential spokes do this perfectly by transmitting the torque from the hub to the rim of the wheel. The wheel reciprocates by communicating its twist and turn to the rim thus advising to move on. Radial spokes are helpful just when the stiffness of the wheel is the issue. The Spokes are made from steel, aluminium, carbon composite or ceramics.

Pneumatic tires have a crucial role. A firm thin tire on a smooth surface flattens less. This equates into less friction, more speed, and less use. The broad and difficult tires made use of on mountain bikes floats on a rough difficult surface area terrain cutting less deep into the dirt. An oval shape smoothly treaded tire goes well with a smooth and wet surface area as it allows effective water evacuation and prevents the tires from hydroplaning. On the other hand, a stiffer rubber substance is utilized in tires of mountain bikes to obtain enhanced physical link and grip with the roadway.

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