1930 Harley-Davidson Model V 1200cc

The introduction of the Model V, in August 1929, essentially ended the Harley-Davidson F-Head era and began the transition of the Big Twin flatheads.

With that being said, the Model V did not come out to a hot start. It was heavier and bulkier than its predecessor, and lacked the power and speed its consumers hoped to have. Due to this, Harley-Davidson recalled their original units. 

According to Bonhams, a great deal of work was then put into the Model V such as extensive engine redesign. This, paired with a number of different features such as interchangeable wheels (allowing a sidecar to be attached), larger brakes and tires, lower seats, and more, sprung the Model V into prominence. 

This specific model now calls the Haas Moto Museum's History Hall its home.