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Harley-Davidson Twin Cam engine at the Harley-Davidson Museum. The Harley-Davidson Twin Cam are motorcycle engines made by Harley-Davidson from 1998 to 2017. Although these engines differed significantly from the Evolution engine, which in turn was derived from the series of single camshaft, overhead valve motors that were first released in 1936, they share a number of characteristics with ...
Fully-automatic transmissions are far less common on motorcycles than manuals, and are mostly found only on motor scooters, mopeds, underbones, minibikes, and some custom cruisers and exotic sports bikes. Types include: hydraulic automatic transmission, continuously variable transmission, and dual-clutch automatic transmissions. [1]
CVO models are produced in Harley-Davidson's York, Pennsylvania plant, where touring and Softail models are also manufactured. In each model year, CVO models feature larger-displacement engines than the mainstream models, and these larger-displacement engines make their way into the normal "big twin" line within a few years when CVO models are again upgraded.
Schematic of a DCT (using two identical clutches located on the axis of the flywheel) A dual-clutch transmission (DCT) (sometimes referred to as a twin-clutch transmission) is a type of multi-speed vehicle transmission system, that uses two separate clutches for odd and even gear sets. [1]
First model in the Softail series. FLSTC Heritage Softail Classic 81.8–85.4 cu in (1,340–1,399 cc) OHV Evolution 1986–1999 Second entry in the Softail family. Springer Softail 1988–2006 The third version of the Softail series sporting the retro Springer frontend. FLSTF/FLFB Fat Boy: 1990– Softail Standard 1998- FXSTD Softail Deuce
The Harley-Davidson Milwaukee-Eight engine is the ninth generation of "big twin" engines developed by the company, but only Harley's fourth all-new Big Twin in 80 years, first introduced in 2016. These engines differ from the traditional Harley Big Twin engines in that there are four valves per cylinder, totaling eight valves, hence the name.
The Harley-Davidson Fat Boy, is a V-twin softail cruiser motorcycle with solid-cast disc wheels. [2] Designed by Willie G. Davidson and Louie Netz, Harley-Davidson built a prototype Fat Boy in Milwaukee for the Daytona Bike Week rally at Daytona Beach in 1988 and 1989. [3] [4] Fat Boys produced from 1990 to 2017 are coded FLSTF, and FLFB ...
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.