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New "All-in-one" tool on fork, stronger foot-pegs, rock-guard on swing-arm. [31] [32] PE175C released. Based upon the RM125A frame and the RM100/125 B & C running gear. No Squish-band, wider ratios, two additional clutch plates and a 32mm carburettor. Plastic 11 litre tank, except in UK (2.6 gallon alloy). Optional centre-stand.
The bike had an 11,600 rpm redline [8] [better source needed] power and torque close to its 250 cc two-stroke rivals. [1] It benefited from engine compression braking, which allowed the engine to slow the bike down during deceleration, giving the brakes a rest. [1] The 1998 YZ400F was the first bike to come stock with a Keihin FCR carburetor.
Two-stroke motorcycles are a type of internal combustion engine that completes a power cycle with two strokes of the piston during only one crankshaft revolution.
Maicoletta scooter Maicoletta Dash. The Maicoletta motor scooter of the 1950s was one of the largest motor scooters produced by any manufacturer until the modern era. [7] The engine was a single cylinder 247cc piston-port two-stroke (an export version featuring a 277cc engine was also produced for use with a sidecar), with four foot-operated gears, enclosed chain drive, centrifugal fan cooling ...
The original YZ250 of 1974 used an air-cooled 250cc two-stroke engine of 70 mm bore and a 64 mm stroke, which was improved semi-annually. The air-cooled motor was replaced in 1982 with a 249 cc liquid-cooled two-stroke reed-valved engine with a mechanical, rather than servo-driven, YPVS exhaust valve for a wider spread of power.
The Roadking though, still retained the protuberance on the left engine cover that housed the oil pump in the Oilking. The Yezdi Roadking was based on the 1974 CZ 250 Falta, where the original bore and stroke of 70 mm × 64 mm (2.76 in × 2.52 in) was retained, but detuned for lower power than its Motocross original. The engine block is smaller ...
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The championship consists of eleven rounds at eleven major tracks all over the continental United States. There are three classes: [23] the 250cc Motocross Class for 150–250 cc 4-stroke machines, the 450cc Motocross Class for 251–450 cc 4-stroke machines and a 250cc Women's Class, using the same rules as men's 250cc. Race events take place ...