Topics: Two-stroke engine, Internal combustion engine, Chainsaw Pages: 3 (817 words) Published: February 14, 2011
Theme: Motocross
Topic: The development of motocross

Good morning class. The theme of my IA is motocross but today I will speak specifically on the topic “The development of motocross as an established sport”.
What is motocross?....Motocross is defined as a timed motorcycle race over a closed outdoor course consisting of a winding dirt trail with hills, jumps, sharp turns, and often muddy terrain. This sport originated in Britain as an off-road event called scrambling. The first known scramble took place at Camberley, Surrey in 1924. The earliest motorcycles were little more than bicycles with small internal combustion engines attached. During these early years people sometimes, used the tracks built for bicycle racing for scrambling events. These early scrambling events were used to show case motorcycles entered by manufacturers to publicize their brand in much the same way they do today. By the late 1920’s “Scrambling” had become very popular in both Britain and France. The French added new dimensions to the sport, they shortened the tracks added laps and man made obstacles such as jumps. They also changed the name to what it is known as today……Motocross which is a combination of motorcycle and cross country.

The bikes used for motocross during the late 1920’s were very similar to those used on the streets at that time such as Harley Davidson’s and Indians, which had rigid frames. By the 1930’s these then gave way to frames containing suspension and more advanced swinging fork rear suspension by the early 1950’s.

According to the FIM motocross went international in 1947 when the Dutch national motorcycle federation hosted a competition called the motocross des nations for national teams on an estate in the Netherlands. Three countries were entered in the first year of the competition they were Great Britain, The Netherlands, and Belgium. The riders competed in races consisting of two heats each of eight laps, over a two mile circuit. Scoring was done...
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