This model the first Harley Davidson twin with 'unit' engine construction.
Harley Davidson Model JDH 1929The model JDH had a 1200 cc (74 cubic-inch) version.
Harley Davidson Model R Flathead 1936The flathead design remained popular throughout to 1940s, and the model WLA Flathead was used by the US Military during WWII, labeling it as the "bike that won the war".
Harley Davidson EL 1000 Knucklehead 1937The first year for the "model E", which was nicknamed as the "knucklehead"due to the knuckle shape of its engine valve covers.
Harley Davidson EL 1000 Knucklehead 1940
Harley Davidson EL 1000 Knucklehead 1947
Harley Davidson Model WR Flathead 1948
Harley Davidson XL Sportster 883 1957The XLC Sportster had a small "peanut style" gas tank, narrow fenders and open straight pipes.
The KR would be a dominant force in dirt track and road-racing competition for almost 17 years.
Harley Davidson KRTT 750 RacerThe KRTT was capable of a 150 mph top speed, with around 50 bhp.












































