Yamaha YZR-M1 MotoGP bikeMotoGP, the highest class of Grand Prix motorcycle racing has changed considerably in recent years. From mid 1970 to 2002 the top class of GP racing allowed 500 cc with a maximum of 4 cylinders, regardless of whether the engine is a two-or four-stroke engine. Therefore, all machines were two strokes by the greater power for a given shift. Some two-and three-cylinder two-stroke 500s were seen, but if they are achieved with minimal weight is an advantage within the rules, usually higher cornering speeds and could also be considered, they lacked the power of the four-cylinder engines.
In 2002 rule changes to facilitate the phasing out of two strokes, it was probably that which produced see as a lack of relevance: the last mass 2-stroke 500cc model was not available to the public marked long to about 15 years. original research? The rules allow the manufacturers to choose between running two-stroke engines (500 cc or less) or four shots (990 or less).
Manufacturers may also be used as the choice of engine configuration. Despite the skyrocketing cost of maintaining the new four-stroke machine related because the additional 490 ccm advantage of the four-strokes were soon able to dominate their two-stroke competitors. The result was in 2003 no two-stroke machines in the MotoGP field. The 125cc and 250cc classes are still exclusively two-stroke machines. In 2007, had the MotoGP class, the maximum engine capacity reduced to 800cc for a minimum of 5 years.
In 2002 rule changes to facilitate the phasing out of two strokes, it was probably that which produced see as a lack of relevance: the last mass 2-stroke 500cc model was not available to the public marked long to about 15 years. original research? The rules allow the manufacturers to choose between running two-stroke engines (500 cc or less) or four shots (990 or less).
Manufacturers may also be used as the choice of engine configuration. Despite the skyrocketing cost of maintaining the new four-stroke machine related because the additional 490 ccm advantage of the four-strokes were soon able to dominate their two-stroke competitors. The result was in 2003 no two-stroke machines in the MotoGP field. The 125cc and 250cc classes are still exclusively two-stroke machines. In 2007, had the MotoGP class, the maximum engine capacity reduced to 800cc for a minimum of 5 years.
