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Sportster motorcycles are powered by a four-stroke, 45° V-twin engine in which both connecting rods, of the "fork and blade" or "knife & fork" design, share a common crank pin. The original Sportster engine was the Ironhead engine, which was replaced with the Evolution engine in 1986.
The ironhead was a Harley-Davidson motorcycle engine, so named because of the composition of the cylinder heads (Iron instead of Aluminium). The engine is a two-cylinder, two valves per cylinder, pushrod V-twin .
In 2021, Harley-Davidson launched the Sportster S model, with a 121 hp engine and 228 Kg ready-to-ride weight. [152] The Sportster S was one of the first Harleys to come with cornering-ABS and lean-sensitive traction control. [153] The Sportster S is also the first model under the Sportster nameplate since 1957 to receive a completely new engine.
Lindsay, Brooke (November 5, 2006), "Harley's Sportster: From a Wild Child to a Grown-Up in 50 Years", The New York Times As grim as those days were in terms of performance, it was an era that produced two of the Sportsters considered most unusual and sought-after by collectors, the 1977-78 XLCR Cafe Racer and the 1983-85 XR1000. Both of these ...
A bobber, originally called a bob-job from the 1930s through 1990s, is a style of custom motorcycle. The typical construction includes removing the front fender, shortening the rear fender , which is "bobbed" (as in bob-tail ), and stripping excess bodywork as well as all superfluous parts to reduce weight.
XL, Ironhead 53.9 cu in (883 cc), 61 cu in (1,000 cc) (1972–1985) 1957–1985 The first year of Sportster, a development of the KH with overhead-valve engines and cast iron heads. The engine was updated after 29 years. [3] XR-750: 46 cu in (750 cc) 1970–1985
File:Harley-Davidson Museum February 2024 23 (Engine Room--Ironhead Sportster, 1957-85).jpg. Add languages. Page contents not supported in other languages.
Harley-Davidson engines are now made at Harley-Davidson Motor Company's Pilgrim Road Powertrain Operations facility in Menomonee Falls, Wisconsin. The company's founders started making smaller flathead motorcycle engines individually by hand and fitted to bicycles in the 10 ft x 15 ft wooden barn in Milwaukee that was the Harley-Davidson ...
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