The Harley Davidson Motorcycle Company initially introduced the knuckle head engine in 1936. Prior to 1936, Harley had manufactured overhead-valve singles but the 1936 knucklehead represented the first of the overhead valve V-Twins.
terça-feira, 14 de junho de 2011
Harley-Davidson 61 OHV "Knucklehead"
The Harley Davidson Motorcycle Company initially introduced the knuckle head engine in 1936. Prior to 1936, Harley had manufactured overhead-valve singles but the 1936 knucklehead represented the first of the overhead valve V-Twins.
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