Sidecar - Sport

Sport

Sidecar racing events exist in Motocross (see Sidecarcross), Enduro, Grasstrack, Trial, road racing and Speedway with sidecar classes. The sport has followers in Europe, United States, Japan, Australia and New Zealand. The sidecars are often classed by age or engine size, with historic sidecar racing often being more popular than its modern counterpart. Older classes in road racing generally resemble solo motorcycles with a platform attached, where modern racing sidecars are low and long and borrow much technology from open wheel race cars. In all types of sidecar racing there is a rider and a passenger who work in unison to make the machine perform, as they would be almost unrideable without the passenger in the correct position.

Road racing sidecars began to change away from normal motorcycle development in the 1950s with them becoming lower and using smaller diameter wheels and they kept the enclosed "dustbin fairing" banned in solo competition in 1957. By the 1970s they were using wide slick tyres with a square car like profile, the rider kneeled behind the engine instead of sitting on a seat and the motor of choice was generally a 500 cc two stroke. In the late 1970s sidecars began to appear with hub centre steering and later the engines moved to the rear of the rider, to lower the centre of gravity further still, making the sidecar very long. Sidecars raced in the world championship known as Superside are all hub centre long monocoque framed machines, the most common being LCR, ART or Windle, with 1,000 cc four-cylinder four-stroke engines, the most popular being the Suzuki GSX-R1000.

These at club and national level are known as Formula One sidecars, as opposed to Formula Two. Formula Two sidecars are short front engined bikes, which must have a frame made of steel tube and have leading link forks as monocoques and hub centre steering is banned. Engines are 350 cc two strokes or 600 cc four strokes. F2 sidecars are raced in their own championship but are often on track at the same time as the F1s, but competing for their own points. Since 1990 at the Isle of Man TT, the Sidecar TT has been solely contested by Formula Two sidecars as Formula Ones were deemed too fast, then lapping at 108 mph (174 km/h) average. By 2006 however, F2s were faster than this lapping at 116 mph (187 km/h).