 |  | | | |  | | Bill Davidson, Jr. wins the Jack Pine endurance contest with
997 points of 1,000. All individual class winners are riding Harley-Davidson®
motorcycles. | |  | | | | |
| All of Harley-Davidson's remaining American competition is now
gone except Indian (Hendee Manufacturing). Indian and Harley-Davidson are the
only two American motorcycle manufacturers until 1953. | |  | | | | |
| The 45 cubic inch-driven, three-wheeled Servi-car
begins its 41 year run as a popular commercial and police vehicle. | |  | | | In dirt track racing, Harley-Davidson racer Joe Petrali begins
a five-year consecutive streak of winning the AMA Grand National Championship.
Petrali also wins the National Hill-Climb Championships for 1932 to 1935. | |  | | | | |
| An art-deco "eagle" design is painted on all gas
tanks. This marks the beginning of graphic designs on Harley-Davidson
motorcycles (with the exception of previously special order-only paint
schemes). This styling decision was made in part to stimulate the low sales
numbers caused by the Great Depression. | |  | | | | |
| The Japanese motorcycle industry is founded as a
result of Harley-Davidson licensing blueprints, tools, dies and machinery to
the Sankyo Company of Japan. The result is the Rikuo motorcycle. | | | | | Joe Petrali and his Harley-Davidson peashooter win all
thirteen of the American Motorcycle Association National Championship dirt
track races. Petrali breaks four records in the process. | |  | | | | |
| Harley-Davidson introduces the EL, an overhead valve, 61 cubic
inch powered bike. With increased horsepower and bold styling changes, the
motorcycle quickly earns the nickname of "Knucklehead," due to the
shape of its rocker boxes. The same year, the Motor Company introduces a 80
cubic inch side valve engine. | |   | | | | |
| The first WL models are produced. Joe Petrali sets a new land
speed record of 136.183 mph on a modified Harley-Davidson 61 cubic inch
overhead valve-driven motorcycle. . The same day, he also breaks the record for
45 cubic inch engine motorcycles. | |  | | | | |
| The Jack Pine Gypsies Motorcycle Club holds the
first Black Hills Rally in Sturgis, SD. | |  | | | On the 3.2 mile beach course at Daytona, FL, Ben Campanale
wins the first of two consecutive victories at the Daytona 200 on a
Harley-Davidson WLDR. | |  | | | | | |
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