Simson S51 B1-4 still remaining a legend
The Simson company appeared in 1854 thanks to two brothers, the Simsons. Since 1953 it started manufacturing of a great Simson motorcycles AVO-425 with a four-stroke 250 CC engine and a propeller driven wheel. And since the beginning of the ' 60s they launched mopeds with two-stroke engines too.
Simson S51 B1-4 also belongs to the family of these motorcycles and boasts with a very good engine for its time. Its motor is very successful from the point of usability and maintainability. It doesn't have the shortcomings that were in the model 53/2kf (the main bearings are lubricated with an oil-gasoline mixture, kick and seals are on the outside, and it is easy to put in place without disassembling the motor). Owing to their motors, the Simson S51 B1-4 and S50 models became the most famous representatives of the brand series.