1982 Simson S51

In 1975 Simson revised its image with a new model, the S50 (the precursor to my S51). This produced 3.6 BHP and was produced in various versions until 1980. It's successor was the S51, in which Simson revised the styling again and returned to a long-stroke engine, this time with a huge power hike to 3.7 BHP. The S51 was built in various forms until production was ended in 1990 (the year my S51 was built, so mine was literally the end of the line).