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The Evolution Big Twin saw a fifteen-year run in Harley-Davidson's Dyna, Softail, FXR, and Touring frames, although a limited number of Evolutions were used in the 2000 model year CVO FXR4, and 1999 FXR2 and FXR3 models. While the main case was only slightly modified from the previous Shovelhead engine, the top end was significantly improved.
The cam followers used in Sportster engines, K models, big twin side-valve models, and the side-valve W model series, were a slightly shorter version of the followers used in the larger motors, but featured the same 0.731-inch (18.6 mm) diameter body and 0.855-inch (21.7 mm) diameter roller follower used since 1929.
The V2 engine introduced in 1948, colloquially called Panhead, was available as E, EL, F, FL depending on size and compression 2019 Harley Davidson FLHT. Harley-Davidson FL is a model designation used for Harley-Davidson motorcycles since 1941, when F referred to the new large capacity 74 cui (1200cc) variant of the V-2 Overhead valve engine (″Knucklehead″) that was introduced in 1936 as ...
Harley-Davidson CVO ("Custom Vehicle Operations") for motorcycles are a family of models created by Harley-Davidson for the factory custom market. For every model year since the program's inception in 1999, Harley-Davidson has chosen a small selection of its mass-produced motorcycle models and created limited-edition customizations of those platforms with larger-displacement engines, costlier ...
Big twin engines F-head (IOE) 1914–1929 Flathead: 1930–1948 (until 1973 in the servicar models) Knucklehead: 1936–1947 Panhead: 1948–1965 Shovelhead: 1966–1984 Evolution: 1984–1999 Twin Cam: 1999–2017 Milwaukee-Eight: 2017- Sport engines W (opposed) 1919–1923 XA 1942 D 1929–1931 R 1932–1936 W (V twin) 1937–1952 G (W engine ...
From 1934 to 1970, with the exception of the Servi-Car, there have been two distinct lines of V-Twin Harley-Davidson motorcycles, the small twins and the big twins. [2] [3] However, individual bikers would sometimes customize bikes by changing parts around or cutting and rewelding frames and other components to suit their tastes.
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The Shovelhead engine was ultimately fitted to all of Harley-Davidson's big twin motorcycles throughout its production. The engines were first met with controversy due to the Shovelhead's weight and ground clearance. Because of this steering and weaving became a new issue that arose with motorcycles fitted with the engine.