Simplex bicycle: dynamo

Dynamos running on the front tyre can slip during wet weather. If that happens, you can put a rubber cap on the dynamo.

Simplex was one of the biggest bike manufacturers in the Netherlands. The company was founded in 1887 and ended its life as a seperate company in 1965. The company was then taken over by the Gazelle company. Gazelle sold the name Simplex in 2000 to a German company.