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W. S. Harley's patented compression release system. [4] Note the screw caps in the cylinder heads giving access to the valves. 1922 Harley-Davidson WJ Harley-Davidson's intention in introducing a new middleweight model was to increase the size of the motorcycle market by appealing to new riders with an entry-level product. [5]
By the 1950s Simplex's designs were primitive, leading to the end of Servi-Cycle and Automatic production in 1960. [4] [5] Simplex continued to make minibikes and karts using proprietary small engines [5] [6] until 1975, when Simplex went out of business. [5] Treen had sold the company three years earlier, in 1972. [7]
It used a 2-cycle 80cc Fuji engine with four speed manual transmission. It featured a 17-inch front wheel and 16-inch rear wheel. L – Rupp manufactured two L-series dirt bikes in 1973, the L80 and L100. Both bikes used 2-cycle Fuji engines, in 80 and 100cc sizes. They were equipped with four- and five-speed manual transmissions, respectively.
The engines are from 1-cylindered production motorcycles and mx motorcycles. 85 up to 250 cc are two stroke engines while 650 class goes with 4-stroke. From 2022 4-stroke 250cc engine is allowed in 125 class (swe class 2) and 450cc 4-stroke in 250cc class (swe class 3). [1] In the mini class the boys and girls from age of 6 years can compete.
Kart racing or karting is a motorsport discipline using open-wheel, four-wheeled vehicles known as go-karts or shifter karts. They are usually raced on scaled-down circuits , although some professional kart races are also held on full-size motorsport circuits.
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The KT100 is a simple and rugged air-cooled engine that uses piston-ported intake induction with a Walbro WB-3A carburetor.The KT100 is a popular high-performance two-stroke kart racing engine.
He test rode the new 125cc chopper model, reaching a top speed 130 km/h (81 mph). The chopper model was the original inspiration which the new U.K. importer saw as very special and distinct for a niche market, and fame grew. Part of the original marketing and advertising included a Fantic 125cc chopper model being given to comedian Dick Emery.