The Adma was a motorcycle manufactured in

Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after Russia, and the most populous member state of the European Union. Germany is situated betwe ...

between 1924 and 1926. The bikes were powered by 169cc

two-stroke engine A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of t ...

with an internal

flywheel A flywheel is a mechanical device which uses the conservation of angular momentum to store rotational energy; a form of kinetic energy proportional to the product of its moment of inertia and the square of its rotational speed. In particular, ass ...

.Erwin Tragatsch; Ash, Kevin. ''The New Illustrated Encyclopedia of Motorcycles'', Quantum Publishing, London, 2000 Adma began its production at a time when hundreds of small factories in Germany began making motorcycles. This was their response to the need for light, inexpensive transportation that had arisen after World War I. Because of the large number of brands, they were forced to find customers in their own region, because a large dealer network could not be built up. Many of these brands purchased built-in engines from other brands, but Adma chose the much more expensive option of developing its own engine block. Like most of these small manufacturers, they had to cease production very soon.

References

Motorcycle manufacturers of Germany {{Motorcycle-stub