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The flathead engine saw service in Harley-Davidson motorcycles beginning with the Model WS flat-twin, produced from 1919 to 1923, [6] and continuing in 1924 with single-cylinder export-model 21-cubic-inch (340 cc) and 30.5-cubic-inch (500 cc) singles and continued in Servi-Cars until 1973. In the domestic U.S. market, the 45-cubic-inch (740 cc ...
The Harley-Davidson RL 45 is a model of the R-series range produced from 1932 to 1936, preceded by the DL range (1929–1931), which was Harley-Davidson's first 45 cubic-inch and first flathead V-twin motorcycle, and succeeded in 1937 by the WL. The R-series range included 45-solo, R, RL and RLD models.
33.4 cu in (548 cc) flathead flat-twin: 1919–1923 First of two H-D flat-twin motorcycle designs put into production, first H-D flathead motorcycle. The fork was a trailing link design. D-series (45 solo) 45.1 cu in (739 cc) flathead: 1929–1932 First H-D 45 cubic inch motorcycle, first H-D flathead V-twin motorcycle.
Charles Gustafson left Reading Standard in 1909 and joined Indian as Oscar Hedstrom's assistant. [5] [6] Gustafson had designed side valve "flathead" engines for Reading Standard, which had been the first motorcycle manufacturer in the United States to use a flathead engine in a production motorcycle. [5]
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 ...
S&S Cycle is an American motorcycle engine and parts engineer and manufacturer. The company was founded in 1958 by George J. Smith and Stanley Stankos in Blue Island, Illinois. [1] The company started by selling high performance pushrods for Harley-Davidson motorcycles, [2] and today they still make parts for a variety of V-Twin bikes. The ...
As of September 2014, eBay has acquired over 40 companies, the most expensive of which was the purchase of Skype, a Voice over Internet Protocol company, for US$2.6 billion in cash plus up to an additional US$1.5 billion if certain performance goals were met. [2] The majority of companies acquired by eBay are based in the United States.
Harley-Davidson XA opposed-twin engine runs 100 °F (38 °C) cooler than a V-twin. [4]During WWII, the U.S. Army asked Harley-Davidson to design a specification of a motorcycle much like the BMWs used by German forces, with shaft drive, a boxer engine, and several other features that made the BMWs exceptionally reliable and low-maintenance machines.