2. Harley-Davidson Model 7D “The Silent Gray Fellow” – 1911


The 1909 Model 5D was Harley-Davidson’s first V-Twin, but the flawed design saw it last only one model year. In 1911 H-D introduced the Model 7D, marketed as The Silent Gray Fellow, and thus began Harley’s uninterrupted succession of V-Twin engines. Nineteen-eleven was Harley’s eighth year in existence and already the company was producing 5,625 total motorcycles for that year. No specific details exist regarding how many 7Ds were constructed, but less than six are known to exist today. The Silent Gray Fellow retailed for $300 in 1911 or $7,317 in 2013 greenbacks.

1911 Harley-Davidson Model 7D

Country of Origin USA
Engine Type Four-stroke, air-cooled, V-Twin
Engine Capacity 803 cc
Bore x Stroke 76 x 89 mm
Horsepower 6.5 hp
Top Speed 60 mph