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"The Imme R100 was a lightweight motorcycle produced from 1948 to 1951 by
Riedel. The beauty of the machine is in it's sheer simplicity: due to
constrained material and financial supplies, the front forks and
swinging arm are single sided, the exhaust acting as the swinging arm
member with the rear wheel being cantilevered with the engine, the
tubing used for the frame, headstock, fork and arm are all the same 40mm
diameter, the 3-speed hand change gearbox does not have a neutral
position and the barrel and head for the 99cc engine producing 4.5BHP
are one piece.
Oddly, first gear is in the middle of the shift pattern with second
below and third above, with a mechanism to hold the clutch open when the
engine idles in first. Norbert Riedel was able to secure materials for
production from the americans after the war as the engine used in the
R100 is the same as he designed to start the turbines on
MeschMesserschmitt Me 262, which they were keen to acquire.
Approximately 12,000 Immes were produced before the company folded in
1951, when a improved 150cc version was nearing production. Now rare and
sought after machines this example was sold by
Yesterdays recently."