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Servi-Car: 45.1 cu in (739 cc) flathead 1932–1936 (R-series engine) 1937–1973 (W-series engine) From 1964, the first Harley-Davidson to have electric starting. [2] Model K and KK 46 cu in (750 cc) flathead 1952–1953 Last 45 street solo, all-new engine, first civilian H-D with rear suspension Model KR: 46 cu in (750 cc) flathead
The prototype of the new loop-frame Harley-Davidson was assembled in a 10 ft × 15 ft (3.0 m × 4.6 m) shed in the Davidson family backyard. [11] [12] Most of the major parts, however, were made elsewhere, including some probably fabricated at the West Milwaukee railshops where oldest brother William A. Davidson was toolroom foreman. This ...
A variation was also manufactured without a side car, called the Type 93 . In the years after World War I, Harley-Davidson's US sales declined while dozens of US motorcycle brands went under, primarily as a result of the decline in the price of the Ford Model T car, triggering a national shift from motorcycles to cars for cheap transportation ...
The Servi-Car used variations of Harley-Davidson's 45 cubic inch flathead. From 1932 to 36, the Servi-Car used the engine from the solo R model. [1] It was changed in 1937 to the engine used in the W model, which differed mainly in having a recirculating oil system instead of the constant-loss system of the R. [2] [7] The "W" flathead engine continued until the end of production in 1973 ...
The Harley-Davidson Sportster is a line of motorcycles produced continuously since 1957 by Harley-Davidson. Sportster models are designated in Harley-Davidson's product code by beginning with "XL". In 1952, the predecessors to the Sportster, the Model K Sport and Sport Solo motorcycles, were introduced.
Many builders eschewed Harley "pattern" motors and frames and started building choppers out of neglected bikes like Yamaha XS-650 twins, old Harley Sportsters, and various 1980's so called UJM bikes (four cylinder air-cooled Japanese bikes - Universal Japanese Motorcycle). Another aspect of the backlash was a return to more traditional styling.
An impact attenuator, also known as a crash cushion, crash attenuator, or cowboy cushion, is a device intended to reduce the damage to structures, vehicles, and motorists resulting from a motor vehicle collision. Impact attenuators are designed to absorb the colliding vehicle's kinetic energy.
[1] and were pioneered at least as early as the 1916 Harley-Davidson 8-valve racer, and incorporated in the production Harley-Davidson Model W by 1919. [2] The technique was developed in the 20th century by Vincent and others, and by the end of the century was common feature of chassis built by Ducati, BMW and others. In 2019, KTM Duke 790's ...