~
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(Right) 1925 Rudge four-valve. 494cc single-cylinder with 16 horsepower. (Below) 1900 Cyklon Berlin. 260cc four-stroke. singlecylinder with 1 .5 horsepower.
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(Left and above) 1924
Nimbus inline-four.
746cc. 7 .0-horsepower
with right-hand shift. (Below) 1922 Opel. a fourstroke single attached to
a bicycle's rear wheel.
producing 1.6 horsepower
from 137cc.
The BMW that started that company in the motorcycle business:
The 1923 R32. 495cc and 8.5 horsepower with shaft drive and
internal-expanding drum brakes.
11
J,
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