A look at the vintage motorcycles on display at the National Motorcycle Museum in Anamosa, Iowa.
Engine: 9hp, Spacke V-twin, chain-drive, Bosch magneto, free engine and changeable gear clutch
Displacement: 70.62ci, develops more than 13hp at maximum rpm
Tires: 2-3/4in studded tires
Brakes: Rear coaster brake, latest Musselman, air cooled, largest braking surface of any motorcycle brake made
Carburetor: Latest improved Schebler Model H
Bore x Stroke: 3.5in x 3.67in