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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]
The Mercedes-Benz W125 was a Grand Prix racing car produced by German auto manufacturer Mercedes-Benz to race during the 1937 Grand Prix season.Designed by head designer Rudolf Uhlenhaut, the car was used by Rudolf Caracciola to win the 1937 European Championship and W125 drivers also finished in the second, third and fourth positions in the championship.
A 1955 Model B "Hummer" at the Harley-Davidson Museum. The Hummer was added to Harley-Davidson's model line in 1955. It was a stripped-down basic model using a redesigned "B-model" engine with the old 125 cc capacity. It was named after Dean Hummer, a Harley dealer in Omaha, Nebraska who led national Harley two-stroke sales. [2]
The MZ two-stroke engines, developed by engineer Walter Kaaden, have influenced motorcycle racing for decades. His 1961 125 cc race engine design was the first to achieve an output of 200 bhp (150 kW) per litre. [3] His revolutionary two-stroke system was copied widely in the 1960s by Japanese manufacturers.
The formula specifies that a cyclekart is a one-seat car using Honda 17 × 1.75 or 2 inch (432 × 44 or 51 mm) rims, 17 × 2.50 (432 × 64 mm) tires, a 38-inch (965 mm) track, wheelbase as close to 66 inches (1676 mm) as the aesthetics of the car will allow, weight no more than 250 lbs (113 kg), and powered by a 200 cc class, single cylinder, 6 ...
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.
The McCulloch MAC-101, also called the MC-101 and MC101, is a two-stroke, single cylinder engine that was designed and produced by McCulloch Motors Corporation for kart racing use, being introduced in 1967. It was also used in the late 1970s and early 1980s as an ultralight aircraft engine. [1] [2] [3] [4]
The Rotax Max 125 Engine is a two-stroke 125 cc (7.6 cu in) engine designed by Rotax, part of Bombardier Recreational Products (BRP), to provide cost-effective but high speed kart racing. Built in Austria, the engine is liquid cooled, equipped with a balance shaft, integrated water pump, electric starter and centrifugal clutch.