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Sunday, July 6, 2008

Bmw Motorbike
Author: pntglobal



BMW initially began building motorcycle engines; and then complete motorcycles. Its motorcycle division is now known as BMW Motorbike. The bikes had a "Boxer" twin engine, in which an ICCE cylinder protrudes into the air-flow from each side of the machine. Apart from their singles (basically the same pattern), all their motorcycles had used this distinctive layout until the early 1980s. Many BMWs are still produced using this pattern, which is designated the R Series.
The K Series (affectionately known as "The Flying Brick"), is still a shaft drive, but now water cooled and with either 3 or 4 cylinders mounted in a straight line from front to the back. Shortly after, BMW also started making the chain-driven F and G series with single and parallel twin Rotax engines.
BMW GS Model
The GS has been available with a range of different engines including single cylinder, twin cylinder water-cooled and twin cylinder air or oil cooled.
The first shaft driven GS model was the R 80 G/S with a 797 cc flat-twin, air-cooled boxer engine. The BMW 247 engine, which was also fitted to many other bikes in the BMW family, is known as an airhead. The most valued version was the R 80 G/S- model featuring a larger tank. In certain markets, a 649 cc R 65 GS version was also available. These early machines used a combined rear suspension / drive Swingarms called a Monolever. Airhead models still have a following among adventure motorcyclists and often sell at a premium price when compared with bikes of a similar age.
BMW motorcycles were always associated with durability and strength. This allowed BMW was able to survive. However, the key to their endurance was thanks in part to the increasing success of BMW's automotive division. Since the beginnings of its motorcycle manufacturing, BMW periodically introduced single-cylinder models. BMW offered the last of these, the R 27. Most of BMW's offerings were still designed to be used with sidecars. By this time sidecars were no longer appealing to most riders; people were interested in sportier motorcycles. The R 50/2, R 60/2, and R69S marked the end of sidecar-capable BMWs. Of this era, the R 69 S remains the most desirable example of the dubbed "/2" ("slash-two") series because of significantly greater engine power than other models, amongst other features unique to this design.
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