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Free Vin Check, Get Vehicle History Report, Free Car History, Used Car History, Auto History, Free Vehicle History, VIN Number Check, Car History, Lemon, Check - Motorcycle: Racers - MX250 1977 -1978


Motorcycle: Racers - MX250 1977 -1978
Date: Sunday, October 31 @ 15:27:55 UTC
Topic: Motorcycle, Motorcycles, Motor Cycle


MX250 1977 -1978 Harley-Davidson's only venture into mainstream motocross produced a highly competitive machine which could have become better still had Milwaukee not severed its Italian links after just two years of MX production. By the time the MX250 came on stream in 1977, Varese had developed a formidable pool of two-stroke know-how, not least from its successful grand prix road-racing experience.

Four years after its official demise, the great Jay Springsteen mischievously used an MX-based machine to win the first AMA event of the 1982 season in Houston. We can only speculate about where this potential might have led. The single-cylinder stroker used a short-stroke (72 x 59.6mm) engine which drove an integral five-speed transmission via gear primary drive and wet multi-plate clutch such as you might find on any dirt-bike today. Initial examples were air-cooled, but a liquid-cooled version came later. A 38mm Italian dell'Orto carburettor provided the fuel (mixed 20:1 with oil for lubrication), while sparks came from a GDI generator on the left end of the crankshaft. During development, peak power rose to a ferocious 58bhp at a giddy 12,000rprn. Telescopic forks provided a generous 9in (228mm) of travel with a similar degree of movement that came from the twin rear shock absorbers. Light alloy Akront rims were laced to simple 5 1/2 in (140mm) drum brakes (as discs were not yet used on dirt-bikes). SPECIFICATIONS Engine: single-cylinder 2-stroke Capacity: 14.8cu in (242cc) Transmission: 5-speed Peak power: 58bhp @ 12,000rpm Weight: 2331bs (106kg) Wheelbase: 57.3in (1,455mm) Top speed: n/a





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